EP3892177B1 - Buse d'aspirateur - Google Patents

Buse d'aspirateur Download PDF

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Publication number
EP3892177B1
EP3892177B1 EP20168232.5A EP20168232A EP3892177B1 EP 3892177 B1 EP3892177 B1 EP 3892177B1 EP 20168232 A EP20168232 A EP 20168232A EP 3892177 B1 EP3892177 B1 EP 3892177B1
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EP
European Patent Office
Prior art keywords
textile
vacuum cleaner
sealing
cleaner nozzle
nozzle according
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.)
Active
Application number
EP20168232.5A
Other languages
German (de)
English (en)
Other versions
EP3892177A1 (fr
Inventor
Philipp Rath
Martin Zydek
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 EP20168232.5A priority Critical patent/EP3892177B1/fr
Publication of EP3892177A1 publication Critical patent/EP3892177A1/fr
Application granted granted Critical
Publication of EP3892177B1 publication Critical patent/EP3892177B1/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
    • A47L9/06—Nozzles with fixed, e.g. adjustably fixed brushes or the like
    • A47L9/0606—Nozzles with fixed, e.g. adjustably fixed brushes or the like rigidly anchored brushes, combs, lips or pads

Definitions

  • the invention relates to a vacuum cleaner nozzle with a housing and a suction mouth which is arranged on an underside of the housing and extends in a transverse direction in relation to a transverse direction in the working direction.
  • Vacuum cleaner nozzles are used to shape and concentrate a suction air flow generated by a vacuum cleaner in the vicinity of a surface to be cleaned, in particular a floor area.
  • the design of the vacuum cleaner nozzle has a particularly large influence on the cleaning result that can be achieved when cleaning with a vacuum cleaner.
  • vacuum cleaner nozzles are from DE 10 2014 111609 A1 and EP 0 353 546 A1 known.
  • the geometric-technical design of the vacuum cleaner nozzle must take many different boundary conditions into account. So there are special vacuum cleaner nozzles, which are intended in particular for floor cleaning - so-called vacuum cleaner floor nozzles. Particularly with this type, a seal between the body of the vacuum cleaner nozzle and the surface to be cleaned is important in order to create sufficient negative pressures necessary for deep cleaning of a floor.
  • bristle strips are known in particular in the field of vacuum cleaner floor nozzles. These are linear strips with relatively coarse bristles throughout, which on the one hand serve to gently support a vacuum cleaner nozzle housing on the surface to be cleaned and on the other hand also contribute in a certain way to sealing the suction mouth from the ambient pressure.
  • the disadvantage here is that the sealing effect provided by the bristle strips is insufficient.
  • Continuous bristle strips also significantly worsen the absorption properties of coarse dirt, since this is pushed in front of the bristle strip and therefore cannot get into the area of influence of the suction mouth. Openings or interruptions arranged in the bristle strip can counteract this problem, but in turn lead to a reduced sealing effect.
  • elastic sealing strips made of a continuous plastic material are known - in particular so-called rubber lips. These have significantly better sealing properties, since they can cling to the contour of the floor surface and are made of the same material without any breakthroughs or openings.
  • a textile sealing arrangement is provided according to the invention, which is arranged in the working direction behind the suction mouth.
  • This comprises a large number of textile sealing strips, with a first sealing strip group comprising at least two of the textile sealing strips which are arranged on the left-hand side on the longitudinal center plane of the housing.
  • a second sealing strip group comprises at least two of the textile sealing strips, which are arranged in time in the longitudinal center plane of the housing.
  • the textile sealing strips of the first sealing strip group and the textile sealing strips of the second Sealing strip group each have a longitudinal extension, which is aligned obliquely relative to the working direction.
  • the sealing arrangement has a plurality of textile sealing strips divided into at least two sealing strip groups. These are inclined in relation to the working direction and the transverse direction, so that they have a greater overall extent than in the case of a single sealing strip that is continuous in the transverse direction. As a result, both a greater sealing effect and a greater supporting force can be generated with the sealing strips.
  • the subdivision into sealing strips spaced apart allows the formation of passages for coarse dirt particles.
  • the slanted position can also be used to achieve a directed guiding or collecting effect through the interaction of the individual slanted sealing strips during a forward or backward stroke in or against the working direction.
  • the longitudinal extent of the sealing strips encloses an angle of between 30° and 80° with the working direction.
  • Each of the angles is preferably between 45° and 75°, in particular approximately 60°.
  • the textile sealing strips each have a length of at least 2 cm, preferably 5 to 8 cm, measured along their longitudinal direction.
  • the textile sealing elements preferably have a width of less than 10 mm, preferably between 3 and 6 mm. In this size range, a sealing effect that is at least equivalent to that of a rubber lip can already be achieved with particular soft clinging properties can be achieved.
  • a ratio of the length to the width of at least 1:10, particularly preferably at least 1:15, is provided.
  • each of the two sealing strip groups are particularly preferably arranged directly adjacent to one another, i.e. without further sealing strips or other sealing elements arranged in between.
  • One or more additional sealing elements in particular a sealing strip running in the transverse direction, can be arranged between the first sealing strip group and the second sealing strip group.
  • the textile sealing strips of the first sealing strip group and the textile sealing strips of the second sealing strip group are arranged symmetrically with respect to the longitudinal center plane.
  • a uniform cleaning result can be achieved over the entire width of the vacuum cleaner nozzle and a congruent behavior with a forward stroke or with a backward stroke on both halves of the vacuum cleaner nozzle.
  • Supporting elements expediently protrude from the underside of the housing and span a footprint.
  • the textile sealing strips protrude at least as far as the uprising level.
  • the support elements can be provided in particular by skids, rollers and/or bristle strips that are more dimensionally stable.
  • the textile sealing strips can be made particularly soft.
  • the invention is characterized in particular by the finding that with a textile Sealing strip a sealing effect can be generated, which is equivalent or even superior to a sealing lip.
  • particularly soft textile sealing elements are characterized by particularly good clinging properties.
  • fibers of a soft textile sealing strip - unlike sealing lips - can also penetrate into fine cracks and crevices in order to significantly improve the suction result on jointed hard floors.
  • the textile sealing strips run towards the longitudinal center plane in the working direction.
  • the slanted sealing strips have an additional collection function during a backward stroke, which concentrates coarse dirt in front of the longitudinal center plane - and thus towards the mouth of the suction line.
  • the alignment of the textile sealing strips is less important, since coarse dirt particles are sucked off below the suction mouth and therefore cannot collect in front of the textile sealing strips.
  • the extent of at least one textile sealing strip thus intersects with the transverse extent of at least one adjacently arranged textile sealing strip. This is possible in particular due to the inclined position according to the invention.
  • the overlap improves the sealing effect and complete coverage of the work area on a forward or reverse stroke.
  • the overlap in the transverse direction is preferably at least 5%, in particular 10% to 20% of the extent of one of the overlapping sealing strips in the transverse direction.
  • the sealing arrangement in the transverse direction has a longitudinally parallel - i. H. aligned in the working direction - textile edge strips.
  • the textile edge strip forms a support element which can exert at least additional load-bearing forces during a movement in the working direction.
  • a particularly strong seal is guaranteed on the sides, so that the suction effect is concentrated on the area in front of and behind the suction mouth. This simplifies thorough pick-up of dirt particles - especially coarse dirt.
  • the edge strips are preferably each arranged completely behind the suction mouth. They therefore serve in particular to channel the intake air stream flowing in from the rear.
  • the textile sealing strips of the first sealing strip group and the textile sealing strips of the second sealing strip group are each aligned parallel to one another. This enables the development of a uniform supporting and sealing effect with comparable cleaning properties at all points.
  • the textile sealing strips have a fibrous web made of textile fibers that protrudes from the underside of the housing.
  • One or more textile fibers can be embedded at one end in the carrier.
  • one or more fibers can protrude downwards with both ends and—roughly in the middle—be fastened to the carrier.
  • the textile fibers are straight - i.e. straight. H. in particular not laid in loops and/or curled - trained.
  • the textile fibers can be arranged particularly densely in order to achieve good fluidic sealing.
  • the textile fibers preferably have a fineness of less than 5 dtex, in particular less than 4 dtex. Fibers with a fineness of between 0.5 dtex and 2 dtex are very particularly preferably used.
  • the textile fibers are preferably formed from one or more plastics. Particular preference is given to forming part of the textile fibers or all of the textile fibers from a material selected from the group consisting of polyester, nylon, acrylic and cellulose.
  • the textile fibers are arranged particularly densely in the fibrous web.
  • the fibrous web has a fiber density of at least 200 textile fibers per square millimeter, particularly preferably at least 400 textile fibers per square millimeter, in particular a fiber density between 500 and 1000 textile fibers per square millimeter.
  • the fibrous web of at least one textile sealing strip preferably has a covering that is homogeneous over the entire surface.
  • the local fiber density is therefore the same in the entire surface area of the textile sealing strip - within the scope of measurement and production accuracy.
  • the homogeneous sealing strips are tuft-free.
  • the textile sealing strips each have a carrier strip in which the fibrous web is embedded.
  • the carrier strip is arranged on the vacuum cleaner nozzle in such a way that it does not protrude from the underside of the housing.
  • the carrier strip is thus arranged in a protected manner and cannot be damaged by ground contact.
  • recesses or recesses are expediently formed on the underside of the vacuum cleaner nozzle housing, into which the carrier strip can be countersunk.
  • the fibrous web is preferably embedded in the carrier strip by gluing, stitching--in particular into a woven, warp-knitted or crocheted carrier strip--and/or welding.
  • the vertical height at which the individual textile fibers are mechanically immobile in relation to the carrier strip due to their embedding is also referred to as the clamping height of the fiber batt. Most preferably, the extends The clamping height also does not exceed the underside of the vacuum cleaner nozzle. This means that the textile fibers of the fibrous web are fully mobile below the vacuum cleaner nozzle.
  • At least one textile sealing strip is detachably attached to the housing.
  • a long service life of the textile sealing elements can be expected.
  • damaged or otherwise unusable sealing elements can be detached from the vacuum cleaner nozzle, preferably without tools, and replaced with replacement parts. A consistently good cleaning result can thus be maintained over the entire service life of the vacuum cleaner nozzle.
  • the textile sealing elements within the scope of the invention should be designed in such a way that they can be easily deformed, particularly in the case of point loading. As a result, they can be bent particularly easily against the direction of movement in order to avoid an obstacle.
  • a particularly fine fiber design enables the individual fibers within the textile structure to “fold away” particularly flatly.
  • the sealing elements are preferably designed in such a way that they can at least partially also take on vertical support loads.
  • the textile sealing arrangement is designed in such a way that, when loaded with half the weight of the housing, it is not more than half the weight an uncompressed - force-free - state is compressed. Therefore, it can raise at least significant parts of the necessary load-bearing capacity.
  • the vacuum cleaner nozzle according to the invention is shown, which has a housing 1 which extends in a working direction x, a transverse direction y and a vertical direction z.
  • the housing 1 has an approximately rectangular shape, the width B measured in the transverse direction y corresponding to approximately 1.5 to 2 times the length L measured in the working direction x.
  • a suction connection piece 2 is connected for connecting the vacuum cleaner nozzle to a suction air duct.
  • the suction connection piece 2 has an angled pipe connection 2a, which can be pivoted relative to the housing 1 both about a pivot axis s 1 running in the transverse direction y and about a longitudinal axis s 2 .
  • the angled pipe connection 2a is connected to the housing 1 via a corrugated hose 2b.
  • the bottom view 2 it can be seen that on the underside 3 of the housing 1 there is a suction mouth 4 which extends in the transverse direction y over almost the entire width B of the housing 1 .
  • the suction mouth 4 forms an opening on the underside of the housing 1 and opens into a suction chamber which is fluidically connected to the suction connection piece 2 .
  • a brush roller 4a Provided inside the suction mouth 4 is a brush roller 4a that can be driven in rotation.
  • a textile sealing arrangement 5 is arranged behind the suction mouth 4 in the working direction x, which arrangement comprises a multiplicity of textile sealing strips 6 .
  • the textile sealing arrangement 5 has at least a first sealing strip group I with at least two of the textile sealing strips 6 which are arranged to the left of a longitudinal center plane 7 of the housing 1 .
  • a second sealing strip group II comprises at least two of the textile sealing strips 6 which are arranged on the right-hand side of the longitudinal center plane 7 of the housing 1 .
  • the textile sealing strips 6 of the first sealing strip group I and the second sealing strip group II each have a longitudinal extent 8 which is aligned at an angle ⁇ obliquely relative to the working direction x.
  • the textile sealing strips 6 have a sealing strip width b of 5 mm and a sealing strip length I of 35 mm.
  • the textile sealing strips 6 of the first sealing strip group I and the textile sealing strips 6 of the second sealing strip group II are arranged symmetrically with respect to the longitudinal center plane 7 .
  • rollers 9 are arranged, which act as support elements on hard floors.
  • the axis of rotation is aligned rear rollers 9 with the pivot axis s 1 As can be seen from the side view 3 removes, the rollers 9 tangentially span a contact plane 10, compared to which the textile sealing strips 6 protrude slightly downwards in the vertical direction z.
  • the textile sealing strips 6 run towards the longitudinal center plane 7 in the working direction x.
  • a cleaning movement counter to the working direction x a collecting effect is achieved, which concentrates any coarse dirt particles in the central region of the suction mouth 4, where the suction air flow is strongest.
  • the textile sealing strips 6 of the first sealing strip group I and the second sealing strip group II are arranged in such a way that they at least partially overlap in the transverse direction y. In the transverse direction y, the overlap u is about 10% of the extent v of a textile sealing strip 6.
  • the sealing arrangement has a longitudinally parallel textile edge strip 11 at each end in the transverse direction y. This is identical to the majority of the textile sealing strips 6 in terms of its dimensions and material properties. Furthermore, the edge strips 11 are arranged completely behind the suction mouth 4 . The textile sealing strips 6 of the first sealing strip group and the textile sealing strips 6 of the second sealing strip group II are each aligned parallel to one another.
  • the textile sealing strip 6 has a fibrous web made of textile fibers protruding from the underside 3 of the housing 1 exhibit.
  • the textile fibers are straight and have a fineness of about 1 dtex.
  • the quilting of the fibrous web is homogeneous over the entire surface of the sealing strips 6 and the edge strips 11 and has a fiber density of at least 400 textile fibers per square millimeter.
  • the textile sealing strips 6 and the edge strips 11 are each formed with a carrier strip in which the fibrous web is embedded.
  • the carrier strip does not protrude from the underside 3 of the housing 1, so that this cannot be seen in the figures.
  • the textile sealing strips 6 and the edge strips 11 are detachably attached to the housing 1 and can be replaced by a user without tools.

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

Claims (15)

  1. Buse d'aspirateur, dotée d'un corps (1) et d'une bouche d'aspiration (4), placée sur une face inférieure (3) du corps (1), laquelle s'étend dans une direction transversale (y), située à la transversale d'une direction de travail (x), caractérisée en ce que derrière la bouche d'aspiration (4) dans la direction de travail (x) est placé un ensemble d'étanchéité (5) textile, lequel comprend une pluralité de bandes d'étanchéité (6) textiles,
    en ce qu'un premier groupe (I) de bandes d'étanchéité comprend au moins deux des bandes d'étanchéité (6) textiles, lesquelles sont placées sur le côté gauche d'un plan médian longitudinal (7) du corps (1),
    en ce qu'un deuxième groupe (II) de bandes d'étanchéité comprend au moins deux des bandes d'étanchéité (6) textiles, lesquelles sont placées sur le côté droit du plan médian longitudinal (7) du corps (7),
    et en ce que les bandes d'étanchéité (6) textiles du premier groupe (I) de bandes d'étanchéité et du deuxième groupe (II) de bandes d'étanchéité présentent chacune une extension longitudinale (8), laquelle est orientée en oblique par rapport à la direction de travail (x).
  2. Buse d'aspirateur selon la revendication 1, caractérisée en ce que les bandes d'étanchéité (6) textiles du premier groupe (I) de bandes d'étanchéité et les bandes d'étanchéité (6) textiles du deuxième groupe (II) de bandes d'étanchéité sont placées en symétrie par rapport au plan médian longitudinal (7).
  3. Buse d'aspirateur selon la revendication 1 ou 2, caractérisée en ce que sur la face inférieure (3) du corps saillissent des éléments de soutien (9), lesquels définissent un plan d'assise (10) et en ce que les bandes d'étanchéité (6) textiles saillissent au moins jusqu'au plan d'assise (10).
  4. Buse d'aspirateur selon l'une quelconque des revendications 1 à 3, caractérisée en ce que dans la direction de travail (x), les bandes d'étanchéité (6) textiles convergent vers le plan médian longitudinal (7) .
  5. Buse d'aspirateur selon l'une quelconque des revendications 1 à 4, caractérisée en ce que deux bandes d'étanchéité (6) textiles placées au voisinage l'une de l'autre se recouvrent dans la direction transversale (y).
  6. Buse d'aspirateur selon l'une quelconque des revendications 1 à 5, caractérisée en ce que dans la direction transversale (y), l'ensemble d'étanchéité (5) comporte sur le côté d'extrémité chaque fois une bande marginale (11) textile, parallèle en direction longitudinale.
  7. Buse d'aspirateur selon la revendication 6, caractérisée en ce que la bande marginale (11) est chaque fois placée entièrement derrière la bouche d'aspiration (4).
  8. Buse d'aspirateur selon l'une quelconque des revendications 1 à 7, caractérisée en ce que les bandes d'étanchéité (6) textiles du premier groupe (I) de bandes d'étanchéité et les bandes d'étanchéité (6) textiles du deuxième groupe (II) de bandes d'étanchéité sont chaque fois orientées à la parallèle les unes des autres.
  9. Buse d'aspirateur selon l'une quelconque des revendications 1 à 8, caractérisée en ce que les bandes d'étanchéité (6) comportent un voile de carde en fibres textiles saillant sur la face inférieure (3) du corps (1).
  10. Buse d'aspirateur selon la revendication 9, caractérisée en ce que les fibres textiles sont conçues sous forme rectiligne.
  11. Buse d'aspirateur selon la revendication 9 ou 10, caractérisée en ce que les fibres textiles font preuve d'un titre d'un maximum de 4 dtex.
  12. Buse d'aspirateur selon l'une quelconque des revendications 9 à 11, caractérisée en ce que le voile de carde présente une densité des fibres d'au moins 200 fibres textiles au millimètre carré.
  13. Buse d'aspirateur selon l'une quelconque des revendications 9 à 12, caractérisée en ce que le voile de carde d'une bande d'étanchéité textile présente une implantation homogène sur toute la surface.
  14. Buse d'aspirateur selon l'une quelconque des revendications 9 à 13, caractérisée en ce que les bandes d'étanchéité (6) textiles comportent chacune une bande porteuse dans laquelle le voile de carde est incorporé et en ce que la bande porteuse ne saillit pas sur la face inférieure du corps.
  15. Buse d'aspirateur selon l'une quelconque des revendications 1 à 14, caractérisée en ce qu'au moins une bande d'étanchéité (6) textile est fixée de manière amovible sur le corps (1).
EP20168232.5A 2020-04-06 2020-04-06 Buse d'aspirateur Active EP3892177B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20168232.5A EP3892177B1 (fr) 2020-04-06 2020-04-06 Buse d'aspirateur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20168232.5A EP3892177B1 (fr) 2020-04-06 2020-04-06 Buse d'aspirateur

Publications (2)

Publication Number Publication Date
EP3892177A1 EP3892177A1 (fr) 2021-10-13
EP3892177B1 true EP3892177B1 (fr) 2022-08-17

Family

ID=70224259

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20168232.5A Active EP3892177B1 (fr) 2020-04-06 2020-04-06 Buse d'aspirateur

Country Status (1)

Country Link
EP (1) EP3892177B1 (fr)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8809802U1 (fr) * 1988-08-01 1989-11-30 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De
DE102014111609B4 (de) * 2014-08-14 2019-10-17 Miele & Cie. Kg Staubsaugermund für einen Staubsauger oder eine Bodendüse eines Staubsaugers

Also Published As

Publication number Publication date
EP3892177A1 (fr) 2021-10-13

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