EP3639715A1 - Buse de sol pour un aspirateur - Google Patents

Buse de sol pour un aspirateur Download PDF

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Publication number
EP3639715A1
EP3639715A1 EP18200437.4A EP18200437A EP3639715A1 EP 3639715 A1 EP3639715 A1 EP 3639715A1 EP 18200437 A EP18200437 A EP 18200437A EP 3639715 A1 EP3639715 A1 EP 3639715A1
Authority
EP
European Patent Office
Prior art keywords
suction mouth
sliding surface
vacuum cleaner
floor nozzle
working direction
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.)
Granted
Application number
EP18200437.4A
Other languages
German (de)
English (en)
Other versions
EP3639715B1 (fr
Inventor
Philipp Rath
Klaus-Dieter Riehl
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.)
Wessel Werk GmbH
Original Assignee
Wessel Werk GmbH
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 Wessel Werk GmbH filed Critical Wessel Werk GmbH
Priority to EP18200437.4A priority Critical patent/EP3639715B1/fr
Priority to CN201910855321.2A priority patent/CN111035309B/zh
Publication of EP3639715A1 publication Critical patent/EP3639715A1/fr
Application granted granted Critical
Publication of EP3639715B1 publication Critical patent/EP3639715B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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

Definitions

  • the invention relates to a vacuum cleaner floor nozzle with a housing extending in a working direction and a perpendicularly extending in the transverse direction and a suction mouth arranged on the underside of the housing and connectable to a suction air guide.
  • the suction mouth extends in the transverse direction over a width and is delimited in the working direction by a front suction mouth edge and a rear suction mouth edge.
  • Vacuum cleaner floor nozzles are used to shape and direct the suction air flow of a vacuum cleaner.
  • the cleaning properties of a vacuum cleaner system are significantly influenced by the design of the vacuum cleaner floor nozzle.
  • the geometrical design of a vacuum cleaner floor nozzle defines the widths of the gaps through which a suction air stream entering the vacuum cleaner is guided along the surface to be cleaned. This results in very specific flow and vacuum conditions, on which the cleaning success depends crucially.
  • the geometry of vacuum cleaner floor nozzles is therefore constantly being optimized to improve the cleaning result on smooth and carpeted floors.
  • adjustable openings can be provided which allow the passage of coarse dirt.
  • additional support elements can also be attached for smooth floors, which can also lift the bristle strips. Both approaches are not transferable to carpets. In carpet operation, the bristle strips are retracted so that the vacuum cleaner floor nozzle rests directly on the textile floor material with its underside designed as a sliding sole. Raising the housing - also through additional support elements - is therefore not possible. Large-area support elements would also have to be provided for effective support on elastic carpets, which in turn could hinder both the suction air flow and the entry of coarse dirt into the vacuum cleaner floor nozzle.
  • the invention is based on the object of improving the coarse dirt suction on carpets without impairing the suction properties with regard to finer dirt particles.
  • the object of the invention and solution to this problem is a vacuum cleaner nozzle according to claim 1.
  • a sliding surface extends in the working direction in front of the front edge of the suction mouth and extends in the transverse direction over at least 75% of the width of the suction mouth extends.
  • the sliding surface In longitudinal section, the sliding surface has a circular arc segment with a radius of curvature between 40 mm and 80 mm.
  • the sliding surface has an extension of at least 15 mm in the working direction.
  • the sliding sole in the immediate vicinity of the front edge of the suction mouth is almost level with only slight differences in height.
  • the already beginning rounding of the circular arc concentrates the contact forces and thus the system obstructing the suction air flow on the immediate area of the edge of the suction mouth.
  • the even curvature of the circular arc forms a sliding surface with which the vacuum cleaner nozzle can slide on larger dirt particles without pushing them in front of it.
  • the coarse dirt particles can thus be run over and thus get into the suction air flow within the suction mouth.
  • a coarse dirt particle enters the increasingly narrow gap between the sliding surface and the floor covering during the phase in which the vacuum cleaner nozzle slides on it.
  • the suction mouth is preferably closed all round. This means that the suction air flow can be applied to the floor covering Only enter the vacuum nozzle via the edges of the suction mouth into the suction mouth.
  • the circular arc segment has a radius of curvature of at least 50 mm, particularly preferably between 60 and 70 mm, in particular approximately 65 mm.
  • the special effect of the circular sliding surface in the preferred parameter ranges is particularly pronounced. If the radius of curvature is too small, there is a sharp transition, so that coarse dirt particles are pushed in front of the vacuum cleaner nozzle without any changes. Too little curvature on the other hand is also impractical, since the front sliding surface becomes very long to produce a sufficient height difference and, on the other hand, air flow between the sliding surfaces and the floor covering is prevented.
  • the slightly curved sliding surface is provided with a particularly large extension in the working direction. At least 20 mm, in particular approximately 22 mm, are preferably advantageous here. This also ensures that very coarse-grained dirt can slide on. The resulting frictional resistances are compensated for by the effect of the air flow flowing in from the front (funnel effect). In a particularly preferred embodiment, there is a height difference of at least 2.5 mm at the front end of the sliding surface in the working direction compared to the front edge of the suction mouth. As a result, the sliding surface is particularly well adapted to the collection of coarse dirt particles of this diameter, for example grains of sand, smaller pebbles or bread crumbs.
  • the sliding surface particularly preferably adjoins the front edge of the suction mouth.
  • the arcuate curvature according to the invention thus begins immediately before the suction mouth.
  • the maximum extension downwards and thus the maximum contact pressure on the carpet is concentrated on the front edge of the suction mouth.
  • a plateau is arranged between the front edge of the suction mouth and the sliding surface, which has an extension in the working direction of between 2 mm and 5 mm. Due to the suction plateau, the sealing of the suction mouth and thus the negative pressure prevailing therein can be increased. This enables better deep cleaning to be achieved.
  • a thread lifter is expediently arranged within the sliding surface.
  • the thread lifter is aligned horizontally and is set back within the contour of the sliding surface.
  • the thread lifter has a textile material, in particular a slanted bristle velor. Threads of the textile material can protrude downwards over the contour of the sliding surface.
  • the thread lifter strip can be used to lift threads and hair lying on the carpet material so that they get into the air currents and at the same time lose their hold on the ground.
  • the sliding surface has only an underside which is circular in longitudinal section.
  • the invention is based on the essential finding that the circular arc shape combines very good properties in the sliding behavior with the funnel effect.
  • the sliding surface can have a linearly longitudinal section at its front end facing away from the front edge of the suction mouth.
  • the sliding surface In the linear area, the sliding surface is not curved, so that the sliding angle is constant there and does not increase any further.
  • the tangent of the circular arc segment at the rear end of the sliding surface facing the front suction mouth edge is particularly preferably in the horizontal direction.
  • the sliding surface can in particular partially have the shape of a cylinder jacket. This is particularly the case when the rear end of the sliding surface lies on a line in the transverse direction and the radius of curvature of the sliding surface is constant over the entire area.
  • the basic structure of the vacuum cleaner floor nozzle is in the Fig. 1 and 2nd recognizable:
  • the vacuum cleaner floor nozzle points in one working direction x and a transverse direction y extending perpendicular thereto and a suction mouth 3 arranged on the underside of the housing 1 and connectable to a suction air guide 2.
  • the suction mouth 3 extends in the transverse direction y over a width B and is delimited in the working direction x by a front suction mouth edge 4 and a rear suction mouth edge 9.
  • a sliding surface 5 is arranged in front of the front suction mouth edge 4, which extends in the transverse direction y over at least 75% of the width B of the suction mouth 3.
  • the sliding surface 5 has the in Figure 3A shown longitudinal section along the working direction x a circular arc segment 6 with a radius of curvature r between 40 mm and 80 mm.
  • the sliding surface 5 extends in the working direction x over a length s of at least 15 mm. How to Fig. 2 can further see, the suction mouth 3 is closed at the edge, so that an inflow of the suction air flow via the front suction mouth edge 4 is favored with the corresponding funnel effect.
  • a thread lifter strip 10 is arranged within the sliding surface 5.
  • the slide-on surface 5 has an underside, which is formed exclusively in the form of a circular arc in longitudinal section.
  • the radius of curvature r is also constant at 65 mm in the entire area of the sliding surface 5.
  • the underside thus forms the shape of part of a cylinder jacket.
  • the front suction mouth edge 4 is straight in the transverse direction y.
  • FIGS Figure 3B and 3C Alternative configurations of the sliding surface 5 are shown in FIGS Figure 3B and 3C shown.
  • a plateau 11 with a width b between 2 mm and 5 mm is arranged between the front suction mouth edge 4 and the sliding surface 5.
  • the plateau 11 also runs within the horizontal plane 8. This is followed by a circular arc segment 6 with a constant radius of curvature on the front in the working direction x.
  • the sliding surface 5 has at its front end 7 facing away from the front suction mouth edge 4 a region 12 which is linear in longitudinal section. This has a length l of at least 3 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
EP18200437.4A 2018-10-15 2018-10-15 Buse de sol pour un aspirateur Active EP3639715B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP18200437.4A EP3639715B1 (fr) 2018-10-15 2018-10-15 Buse de sol pour un aspirateur
CN201910855321.2A CN111035309B (zh) 2018-10-15 2019-09-11 吸尘器地面喷嘴

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18200437.4A EP3639715B1 (fr) 2018-10-15 2018-10-15 Buse de sol pour un aspirateur

Publications (2)

Publication Number Publication Date
EP3639715A1 true EP3639715A1 (fr) 2020-04-22
EP3639715B1 EP3639715B1 (fr) 2023-04-19

Family

ID=63862023

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18200437.4A Active EP3639715B1 (fr) 2018-10-15 2018-10-15 Buse de sol pour un aspirateur

Country Status (2)

Country Link
EP (1) EP3639715B1 (fr)
CN (1) CN111035309B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4311464A1 (fr) * 2022-07-29 2024-01-31 Seb S.A. Tête d'aspiration comprenant une semelle équipée d'une surface de glissement avant courbée

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5539091U (fr) * 1978-09-08 1980-03-13
DE4243244A1 (de) * 1992-12-19 1994-06-23 Miele & Cie Mit Laufrädern versehene Bodendüse für Staubsauger
EP2433538A1 (fr) * 2010-09-24 2012-03-28 Seb S.A. Semelle de suceur d'aspirateur
GB2559994A (en) * 2017-02-23 2018-08-29 Tti Macao Commercial Offshore Ltd An accessory tool for a surface cleaning apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015101019A1 (de) * 2015-01-23 2016-07-28 Wessel-Werk Gmbh Gleitsohle aus Kunststoff für eine Staubsaugerdüse
EP3257417B1 (fr) * 2016-06-14 2023-06-14 Wessel-Werk GmbH Buse d'aspirateur
EP3500145B1 (fr) * 2016-08-22 2021-10-06 Alfred Kärcher SE & Co. KG Suceur pour un aspirateur, procédé d'aspiration de surfaces textiles et aspirateur

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5539091U (fr) * 1978-09-08 1980-03-13
DE4243244A1 (de) * 1992-12-19 1994-06-23 Miele & Cie Mit Laufrädern versehene Bodendüse für Staubsauger
EP2433538A1 (fr) * 2010-09-24 2012-03-28 Seb S.A. Semelle de suceur d'aspirateur
GB2559994A (en) * 2017-02-23 2018-08-29 Tti Macao Commercial Offshore Ltd An accessory tool for a surface cleaning apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4311464A1 (fr) * 2022-07-29 2024-01-31 Seb S.A. Tête d'aspiration comprenant une semelle équipée d'une surface de glissement avant courbée
FR3138289A1 (fr) * 2022-07-29 2024-02-02 Seb S.A. Tête d’aspiration comprenant une semelle équipée d’une surface de glissement avant courbée

Also Published As

Publication number Publication date
EP3639715B1 (fr) 2023-04-19
CN111035309A (zh) 2020-04-21
CN111035309B (zh) 2022-09-06

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