EP0200957B1 - Suction cleaner nozzle - Google Patents

Suction cleaner nozzle Download PDF

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Publication number
EP0200957B1
EP0200957B1 EP86105129A EP86105129A EP0200957B1 EP 0200957 B1 EP0200957 B1 EP 0200957B1 EP 86105129 A EP86105129 A EP 86105129A EP 86105129 A EP86105129 A EP 86105129A EP 0200957 B1 EP0200957 B1 EP 0200957B1
Authority
EP
European Patent Office
Prior art keywords
mouthpiece
point
work
tip
carpet pile
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
EP86105129A
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German (de)
French (fr)
Other versions
EP0200957A1 (en
Inventor
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 EP0200957A1 publication Critical patent/EP0200957A1/en
Application granted granted Critical
Publication of EP0200957B1 publication Critical patent/EP0200957B1/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, in relation to the working direction, is provided at least on its front side with a rigid work bar which delimits the suction channel of the mouthpiece and whose support edge, which is adjacent to the surface to be cleaned, is designed as a tip.
  • Such a vacuum cleaner mouthpiece is known from GB-A 391 607.
  • the work strips in this mouthpiece consist of narrow metal strips that are rigidly attached to the mouthpiece housing.
  • the pointed support edges of the work strips penetrate relatively deeply into the carpet pile.
  • the high pushing forces in turn result in a correspondingly high level of wear on the carpet pile.
  • separate support ribs are provided on the mouthpiece sole in the known mouthpiece, but this means that the work strips no longer have an optimal effect.
  • the work bar consists of an elastic strip bent forward in the lower part. This enables perfect suction to a wall edge.
  • the elastic strip is pivoted in accordance with the respective direction of movement and assumes a curved shape.
  • the contact edge essentially slides over the carpet pile and does not penetrate it deep enough.
  • the invention has for its object to design a vacuum cleaner mouthpiece of the type described in such a way that the working edges come into effect as optimally as possible, i.e. their depth of penetration into the carpet pile is not limited as far as possible and nevertheless heavy wear of the carpet pile is avoided.
  • the work bar is pivotally arranged and has a flat part to which the tip is angled and facing the suction channel to the outside, the angle between the tangent to the center line of the tip and the Center line of the flat part of the work bar is an obtuse angle in the range of 110 ° to 160 °.
  • a steep engagement of the tip necessary for the wide opening of the carpet pile is achieved in that the angle between the tangent to the center line of the tip and the center line of the flat part of the work bar is an obtuse angle in the range from 110 ° to 160 °.
  • a pivotable work bar is arranged on both sides of the suction channel and the contact edge of each work bar is designed as an outwardly projecting, protruding tip relative to the suction channel.
  • a work bar with the tip of its working edge comes into effect both in the forward and backward movement of the mouthpiece.
  • a rounded course of the contact edge towards the tip end contributes to a reduction in the sliding resistance, since the rear work bar in the respective direction of movement lies on the carpet pile with the rounded part of its working edge and thus glides over the carpet pile without any significant frictional resistance.
  • FIG. 1 shows a suction mouthpiece in the rest position and FIG. 2 shows a suction mouthpiece when pushed forward.
  • a suction mouthpiece With 1 the housing of a suction mouthpiece is referred to, to which a suction pipe 2 which can be connected to a vacuum cleaner is connected.
  • a work bar 5 or 6 is pivotally attached by means of an elastic hinge band 7.
  • the contact edge 8 of each work bar 5 or 6 is designed as a tip 10 which points outward relative to the suction channel 9.
  • the tip 10 of the work strips 5 and 6 protrudes from the plane of the vertical part of the work strips 5 and 6.
  • FIG. 2 shows the position of the work strips 5 and 6 when the suction mouthpiece is moved in the direction indicated by an arrow 11.
  • the work strips 5 and 6 are deflected due to their elastic connection to the mouthpiece housing 1 against the direction of movement of the mouthpiece.
  • the tip 10 of the front work bar 5 in the direction of movement engages in the carpet pile 12.
  • the tip 10 of the work bar 5 penetrates deeply into the carpet pile 12 and opens it accordingly, so that the air flowing through the suction channel 9 can penetrate deeply into the carpet pile 12.
  • the work strip 6, which is at the rear with respect to the direction of movement, lies on the carpet pile 12 due to the pivoting out with the rounded side of the support edge 8. This slides this job ste 6 over the carpet pile 12 without any significant resistance.
  • the work strips 5 and 6 can be formed as continuous strips and fastened to the mouthpiece housing 1 by means of an elastic connecting member. But there is also the possibility of dividing the work strips 5 and 6 into individual elastic tongues arranged side by side.
  • the suction mouthpiece When the suction mouthpiece is moved, only individual tongues are bent in each case in accordance with the resistance forces that act in different ways across the width of the suction mouthpiece, and these springs spring back into their starting position when the respective resistance force decreases.
  • This movement of the tongues massages the carpet continuously and opens it so that the suction air can penetrate deeply into the carpet pile and carry the dirt stored there.
  • the pushing force is significantly reduced.
  • the tangent 14 at the end of the tip 10 is applied to the dashed center line 13 of the tip 10.
  • the tangent 14 forms an obtuse angle a with the center line 15 of the vertical part of the work bar 5. It has proven to be particularly favorable that the angle a is in the range between 110 to 160 ° .

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

Description

Die Erfindung betrifft ein Staubsaugermundstück, das in bezug auf die Arbeitsrichtung mindestens an seiner Vorderseite mit einer den Saugkanal des Mundstückes begrenzenden, starren Arbeitsleiste versehen ist, deren der zu reinigenden Fläche benachbarte Auflagekante als Spitze ausgebildet ist.The invention relates to a vacuum cleaner mouthpiece which, in relation to the working direction, is provided at least on its front side with a rigid work bar which delimits the suction channel of the mouthpiece and whose support edge, which is adjacent to the surface to be cleaned, is designed as a tip.

Ein solches Staubsaugermundstück ist durch die GB-A 391 607 bekannt. Die Arbeitsleisten bestehen bei diesem Mundstück aus schmalen Metalistreifen, die starr an dem Mundstückgehäuse befestigt sind. Beim Hin- und Herbewegen des Mundstückes dringen die spitz ausgebildeten Auflagekanten der Arbeitsleisten verhältnismäßig tief in den Teppichflor ein. Hierdurch wird zwar das gewünschte Aufspreizen des Teppichflors erreicht, jedoch muß dies mit einem hohen Kraftaufwand beim Hin- und Herbewegen des Mundstückes erkauft werden. Die hohen Schiebekräfte haben wiederum einen entsprechend starken Verschleiß des Teppichflores zur Folge. Um ein zu starkes Eindringen der spitzen Auflagekanten der Arbeitsleisten in den Teppich zu verhindern, sind bei dem bekannten Mundstück gesonderte Auflagerippen an der Mundstücksohle vorgesehen, damit kommen aber die Arbeitsleisten nicht mehr optimal zur Wirkung.Such a vacuum cleaner mouthpiece is known from GB-A 391 607. The work strips in this mouthpiece consist of narrow metal strips that are rigidly attached to the mouthpiece housing. When the mouthpiece is moved back and forth, the pointed support edges of the work strips penetrate relatively deeply into the carpet pile. As a result, the desired spreading of the carpet pile is achieved, but this has to be bought with a great effort when moving the mouthpiece back and forth. The high pushing forces in turn result in a correspondingly high level of wear on the carpet pile. In order to prevent excessive penetration of the pointed contact edges of the work strips into the carpet, separate support ribs are provided on the mouthpiece sole in the known mouthpiece, but this means that the work strips no longer have an optimal effect.

Bei einem durch das DE-U 7 431 298 bekannten Mundstück besteht die Arbeitsleiste aus einem elastischen, im unteren Teil nach vorn abgebogenen Streifen. Hierdurch wird ein einwandfreies Absaugen bis an einen Wandrand ermöglicht. Beim Hin-und Herbewegen des Mundstückes wird der elastische Streifen entsprechend der jeweiligen Bewegungsrichtung verschwenkt und nimmt eine gebogene Form an. Infolge der Durchbiegung des elastischen Streifens gleitet die Auflagekante im wesentlichen über den Teppichflor und dringt nicht mehr tief genug in diesen ein.In a mouthpiece known from DE-U 7 431 298, the work bar consists of an elastic strip bent forward in the lower part. This enables perfect suction to a wall edge. When the mouthpiece is moved back and forth, the elastic strip is pivoted in accordance with the respective direction of movement and assumes a curved shape. As a result of the deflection of the elastic strip, the contact edge essentially slides over the carpet pile and does not penetrate it deep enough.

Dies gilt auch für ein durch die DE-C 671 420 bekanntes Staubsaugermundstück, bei dem an den beiden Längsseiten des Saugkanals Klappen aus Gummi angeordnet sind. Diese Klappen biegen sich entsprechend der Bewegungsrichtung durch und gleiten dabei mit ihrer abgerundeten Seite über den Teppichflor. Hierdurch wird der Teppichflor statt gelockert eher verdichtet.This also applies to a vacuum cleaner mouthpiece known from DE-C 671 420, in which flaps made of rubber are arranged on the two long sides of the suction channel. These flaps bend according to the direction of movement and slide with their rounded side over the carpet pile. As a result, the carpet pile is compacted rather than loosened.

Der Erfindung liegt die Aufgabe zugrunde, ein Staubsaugermundstück der eingangs beschriebenen Art so auszubilden, daß die Arbeitskanten möglichst optimal zur Wirkung kommen, d.h. ihre Eindringtiefe in den Teppichflor möglichst nicht begrenzt ist und trotzdem ein starker Verschleiß des Teppichflors vermieden wird.The invention has for its object to design a vacuum cleaner mouthpiece of the type described in such a way that the working edges come into effect as optimally as possible, i.e. their depth of penetration into the carpet pile is not limited as far as possible and nevertheless heavy wear of the carpet pile is avoided.

Die Lösung der gestellten Aufgabe gelingt nach der Erfindung dadurch, daß die Arbeitsleiste verschwenkbar angeordnet ist und einen ebenen Teil aufweist, an dem die Spitze abgewinkelt anschließt und gegenüber dem Saugkanal nach außen weist, wobei der Winkel zwischen der Tangente an die Mittellinie der Spitze und der Mittellinie des ebenen Teiles der Arbeitsleiste ein stumpfer Winkel im Bereich von 110° bis 160° ist. Beim Vorwärtsschieben des Mundstückes wird die Arbeitsleiste infolge des Reibungswiderstandes mit dem Teppichflor nach hinten verschwenkt, so daß die Spitze der Arbeitskante mit dem Teppichflor in Eingriff kommt. Die Spitze vermag in den Teppichflor einzudringen und diesen für einen besseren Zugang der Saugluft entsprechend zu öffnen. Hierbei wird ein für das weite Offnen des Teppichflores notwendiger steiler Eingriff der Spitze dadurch erreicht, daß der Winkel zwischen der Tangente an die Mittellinie der Spitze und der Mittellinie des ebenen Teiles der Arbeitsleiste ein stumpfer Winkel im Bereich von 110° bis 160° ist.The solution to the problem is achieved according to the invention in that the work bar is pivotally arranged and has a flat part to which the tip is angled and facing the suction channel to the outside, the angle between the tangent to the center line of the tip and the Center line of the flat part of the work bar is an obtuse angle in the range of 110 ° to 160 °. When pushing the mouthpiece forward, the work bar is pivoted backwards due to the frictional resistance with the carpet pile, so that the tip of the working edge comes into engagement with the carpet pile. The tip is able to penetrate the carpet pile and open it accordingly for better access to the suction air. Here, a steep engagement of the tip necessary for the wide opening of the carpet pile is achieved in that the angle between the tangent to the center line of the tip and the center line of the flat part of the work bar is an obtuse angle in the range from 110 ° to 160 °.

Besonders vorteilhaft ist, daß zu beiden Seiten des Saugkanals jeweils eine verschwenkbare Arbeitsleiste angeordnet und die Auflagekante jeder Arbeitsleiste gegenüber dem Saugkanal als nach außen weisende, vorstehende Spitze ausgebildet ist. Dadurch kommt sowohl bei der Vorwärts- als auch Rückwärtsbewegung des Mundstückes jeweils eine Arbeitsleiste mit der Spitze ihrer Arbeitskante zur Wirkung. Dabei trägt ein abgerundeter Verlauf der Auflagekante zum Spitzenende hin zur Verminderung des Schiebewiderstandes bei, da die in der jeweiligen Bewegungsrichtung jeweils hintere Arbeitsleiste mit dem abgerundeten Teil ihrer Arbeitskante auf dem Teppichflor aufliegt und dadurch ohne nennenswerten Reibungswiderstand über den Teppichflor gleitet.It is particularly advantageous that a pivotable work bar is arranged on both sides of the suction channel and the contact edge of each work bar is designed as an outwardly projecting, protruding tip relative to the suction channel. As a result, a work bar with the tip of its working edge comes into effect both in the forward and backward movement of the mouthpiece. A rounded course of the contact edge towards the tip end contributes to a reduction in the sliding resistance, since the rear work bar in the respective direction of movement lies on the carpet pile with the rounded part of its working edge and thus glides over the carpet pile without any significant frictional resistance.

Anhand eines in der Zeichnung dargestellten Ausführungsbeispieles wird der Anmeldungsgegenstand nachfolgend näher beschrieben.The subject of the application is described in more detail below using an exemplary embodiment shown in the drawing.

In einer Schnittdarstellung zeigt die Fig. 1 ein Saugmundstück in Ruhestellung und Fig. 2 ein Saugmundstück beim Vorwärtsschieben.In a sectional view, FIG. 1 shows a suction mouthpiece in the rest position and FIG. 2 shows a suction mouthpiece when pushed forward.

Fig. 3 zeigt in vergrößerter Darstellung eine Arbeitsleiste.3 shows an enlarged work bar.

Mit 1 ist das Gehäuse eines Saugmundstückes bezeichnet, an das ein mit einem Staubsauger verbindbares Saugrohr 2 angeschlossen ist. Sowohl an der Vorderwand 3 als auch an der Rückwand 4 des Mundstückgehäuses 1 ist jeweils eine Arbeitsleiste 5 bzw. 6 mittels eines elastischen Scharnierbandes 7 verschwenkbar befestigt. Die Auflagekante 8 jeder Arbeitsleiste 5 bzw. 6 ist als gegenüber dem Saugkanal 9 nach außen weisende Spitze 10 ausgebildet. Die Spitze 10 der Arbeitsleisten 5 und 6 steht gegenüber der Ebene des senkrechten Teiles der Arbeitsleisten 5 und 6 vor.With 1 the housing of a suction mouthpiece is referred to, to which a suction pipe 2 which can be connected to a vacuum cleaner is connected. Both on the front wall 3 and on the rear wall 4 of the mouthpiece housing 1, a work bar 5 or 6 is pivotally attached by means of an elastic hinge band 7. The contact edge 8 of each work bar 5 or 6 is designed as a tip 10 which points outward relative to the suction channel 9. The tip 10 of the work strips 5 and 6 protrudes from the plane of the vertical part of the work strips 5 and 6.

Die Fig. 2 zeigt die Stellung der Arbeitsleisten 5 und 6, wenn das Saugmundstück in der durch einen Pfeil 11 angedeuteten Richtung bewegt wird. Die Arbeitsleisten 5 und 6 werden infolge ihrer elastischen Verbindung mit dem Mundstückgehäuse 1 entgegen der Bewegungsrichtung des Mundstückes ausgelenkt. Infolge dieser Auslenkung greift die Spitze 10 der in der Bewegungsrichtung vorderen Arbeitsleiste 5 in den Teppichflor 12 ein. Die Spitze 10 der Arbeitsleiste 5 dringt hierbei tief in den Teppichflor 12 ein und öffnet diesen entsprechend weit, so daß die durch den Saugkanal 9 strömende Luft entsprechend tief in den Teppichflor 12 eindringen kann. Die in Bezug auf die Bewegungsrichtung hintere Arbeitsleiste 6 liegt infolge des Ausschwenkens mit der abgerundeten Seite der Auflagekante 8 auf dem Teppichflor 12 auf. Dadurch gleitet diese Arbeitsleiste 6 ohne nennenswerten Widerstand über den Teppichflor 12.FIG. 2 shows the position of the work strips 5 and 6 when the suction mouthpiece is moved in the direction indicated by an arrow 11. The work strips 5 and 6 are deflected due to their elastic connection to the mouthpiece housing 1 against the direction of movement of the mouthpiece. As a result of this deflection, the tip 10 of the front work bar 5 in the direction of movement engages in the carpet pile 12. The tip 10 of the work bar 5 penetrates deeply into the carpet pile 12 and opens it accordingly, so that the air flowing through the suction channel 9 can penetrate deeply into the carpet pile 12. The work strip 6, which is at the rear with respect to the direction of movement, lies on the carpet pile 12 due to the pivoting out with the rounded side of the support edge 8. This slides this job ste 6 over the carpet pile 12 without any significant resistance.

Die Arbeitsleisten 5 und 6 können als durchgehende Leisten ausgebildet und mittels eines elastischen Verbindungsgliedes an dem Mundstückgehäuse 1 befestigt sein. Es besteht aber auch die Möglichkeit, die Arbeitsleisten 5 und 6 in einzelne elastische, nebeneinander angeordnete Zungen zu unterteilen. Beim Bewegen des Saugmundstückes werden entsprechend der über die Breite des Saugmundstückes partiell unterschiedlich wirkenden Widerstandskräfte jeweils immer nur einzelne Zungen umgebogen, die beim Nachlassen der jeweiligen Widerstandskraft wieder in ihre Ausgangsstellung zurückfedern. Durch diese Bewegung der Zungen wird der Teppichflor fortlaufend massiert und dabei geöffnet, so daß die Saugluft tief in den Teppichflor eindringen und den dort lagernden Schmutz mitführen kann. Da außerdem nicht alle Zungen gleichzeitig ausgelenkt werden, ergibt sich eine wesentliche Reduzierung der Schiebekraft.The work strips 5 and 6 can be formed as continuous strips and fastened to the mouthpiece housing 1 by means of an elastic connecting member. But there is also the possibility of dividing the work strips 5 and 6 into individual elastic tongues arranged side by side. When the suction mouthpiece is moved, only individual tongues are bent in each case in accordance with the resistance forces that act in different ways across the width of the suction mouthpiece, and these springs spring back into their starting position when the respective resistance force decreases. This movement of the tongues massages the carpet continuously and opens it so that the suction air can penetrate deeply into the carpet pile and carry the dirt stored there. In addition, since not all tongues are deflected at the same time, the pushing force is significantly reduced.

Bei der vergrößerten Darstellung der Arbeitsleiste 5 in Fig. 3 ist an die gestrichelt eingetragene Mittellinie 13 der Spitze 10 die Tangente 14 am Ende der Spitze 10 angelegt. Die Tangente 14 bildet mit der Mittellinie 15 des senkrechten Teiles der Arbeitsleiste 5 einen stumpfen Winkel a. Es hat sich als besonders günstig erwiesen, daß der Winkel a im Bereich zwischen 110 bis 160° liegt.In the enlarged representation of the work bar 5 in FIG. 3, the tangent 14 at the end of the tip 10 is applied to the dashed center line 13 of the tip 10. The tangent 14 forms an obtuse angle a with the center line 15 of the vertical part of the work bar 5. It has proven to be particularly favorable that the angle a is in the range between 110 to 160 ° .

Claims (3)

1. A vacuum cleaner nozzle which, relative to the working direction, is provided at least at its front side with a rigid working bar (5) bounding the suction passage (9) of the nozzle (1) of which the bearing edge adjacent to the area to be cleaned is formed as a point (10), characterised in that the working bar (5) is arranged so that it can tilt and has a flat part adjoining and angled to the point (10) and pointing outwardly relative to the suction passage (9), the angle (a) between the tangent (14) to the centre line (13) of the point (10) and the centre line (15) of the flat part of the working bar (5 or 6) being an obtuse angle in the range from 110° to 160°.
2. A vacuum cleaner nozzle according to claim 1, characterised in that a respective tiltable working bar (5 and 6) is arranged on each side of the suction passage (9) and the bearing edge (8) of each respective working bar (5 and 6) is formed as a projecting point (10) pointing outwardly relative to the suction passage (9).
3. A vacuum cleaner nozzle according to claim 1, characterised in that the bearing edge (8) is rounded up to the end of the point (10).
EP86105129A 1985-04-24 1986-04-14 Suction cleaner nozzle Expired EP0200957B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8512173U DE8512173U1 (en) 1985-04-24 1985-04-24 Vacuum cleaner mouthpiece
DE8512173U 1985-04-24

Publications (2)

Publication Number Publication Date
EP0200957A1 EP0200957A1 (en) 1986-11-12
EP0200957B1 true EP0200957B1 (en) 1989-04-19

Family

ID=6780323

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86105129A Expired EP0200957B1 (en) 1985-04-24 1986-04-14 Suction cleaner nozzle

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EP (1) EP0200957B1 (en)
DE (2) DE8512173U1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4201596C2 (en) * 1992-01-22 2001-07-05 Gerhard Kurz Floor nozzle for vacuum cleaners
DE19900557C2 (en) * 1999-01-09 2002-06-06 Wessel Werk Gmbh Suction head for vacuum cleaner
FR2840180B1 (en) * 2002-06-03 2004-08-06 Seb Sa VACUUM CLEANER WITH SCRAPER
KR101369227B1 (en) * 2007-05-28 2014-03-05 삼성전자주식회사 Suction Brush for Vacuum Cleaner
GB2557092B (en) 2016-02-12 2018-10-31 Dyson Technology Ltd Cleaner head for a vacuum cleaner

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE391848A (en) * 1932-04-27
DE668835C (en) * 1937-01-08 1938-12-10 Anna Hempel Mouthpiece for vacuum cleaner
DE671420C (en) * 1937-03-21 1939-02-07 Handstaubsauger G M B H Suction mouthpiece for vacuum cleaner
GB855613A (en) * 1958-09-18 1960-12-07 Hoover Ltd Improvements relating to suction nozzles
US3135986A (en) * 1963-03-18 1964-06-09 Joe E Tolin Vacuum cleaning tool
US3571841A (en) * 1969-04-28 1971-03-23 Hoover Co Wet pick-up suction nozzle with filter means

Also Published As

Publication number Publication date
DE8512173U1 (en) 1986-08-21
DE3662833D1 (en) 1989-05-24
EP0200957A1 (en) 1986-11-12

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