EP3634193A1 - Dispositif de buses de sol, rouleau de nettoyage pour le nettoyage d'une surface textile et machine d'aspiration - Google Patents

Dispositif de buses de sol, rouleau de nettoyage pour le nettoyage d'une surface textile et machine d'aspiration

Info

Publication number
EP3634193A1
EP3634193A1 EP17727889.2A EP17727889A EP3634193A1 EP 3634193 A1 EP3634193 A1 EP 3634193A1 EP 17727889 A EP17727889 A EP 17727889A EP 3634193 A1 EP3634193 A1 EP 3634193A1
Authority
EP
European Patent Office
Prior art keywords
suction
floor nozzle
nozzle device
electrically conductive
conductive material
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.)
Pending
Application number
EP17727889.2A
Other languages
German (de)
English (en)
Inventor
Felix Treitz
Stephanie MIßNER
Markus SPROLL
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.)
Alfred Kaercher SE and Co KG
Original Assignee
Alfred Kaercher SE and Co KG
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 Alfred Kaercher SE and Co KG filed Critical Alfred Kaercher SE and Co KG
Publication of EP3634193A1 publication Critical patent/EP3634193A1/fr
Pending legal-status Critical Current

Links

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
    • A47L9/04—Nozzles with driven brushes or agitators
    • 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 present invention relates to a floor nozzle device having a textile surface cleaning function.
  • the floor nozzle device comprises a bottom body and a sliding sole, which is in contact with a surface to be cleaned during operation of the floor nozzle device.
  • Floor nozzle devices which have a textile surface cleaning function are used in particular in the cleaning of soiled and / or dusty textile surfaces, such as, for example, carpets, carpets and / or felt floors.
  • the floor nozzle device is movable over the surface to be cleaned, in particular slidable. Dust and / or other dirt particles are absorbed by the floor nozzle device in an air stream and sucked.
  • the invention further relates to a cleaning roller for a textile surface cleaning.
  • cleaning rollers are used in the cleaning of textile surfaces and / or hard surfaces, which preferably form part of a suction machine.
  • cleaning rollers are preferably moved in a rotating movement about a rotation axis, wherein the rotation axis is arranged perpendicular or oblique to a main movement direction of the suction machine.
  • the invention relates to a suction machine.
  • a cleaning head for a surface treatment device comprising a
  • Body having a suction opening. A stream of air flows through the suction opening into the cleaning head.
  • the body has at least one part, which engages the ground and which is made of a material comprising a dispersion of carbon nanotubes in a polymer matrix.
  • bristles for a brush which are made of a composite material comprising a dispersion of carbon nanotubes in a polymer matrix are known from the cited references.
  • Extension tubes or components of extension tubes for vacuum cleaners of a carbon fiber-containing resin are known from
  • Vacuum cleaner nozzles made of carbon fibers, aramid resin fibers, epoxy resin fibers and their mixtures as a substitute for a plastic material are known from WO 2005/035878 AI. From US 2003/0014832 Al vacuum cleaners are made of a non-electrically conductive material, such as polymers or graphite-based compositions known.
  • Vacuum cleaners in which the dust pickup is supported by means of electrostatic charge of a base plate by a separate generator, are known from US 6,199,244 Bl.
  • the return carrier comprises a carbon fiber-containing region through which an electrically conductive connection between the work apparatus and an operator of the work apparatus is established during operation.
  • a sheet-metal sliding sole for a vacuum cleaner nozzle is known from EP 1 964 501 A2.
  • JP 11346967 A discloses the use of metallic fibers at the bottom of suction device bodies.
  • the invention has for its object to provide a floor nozzle device of the type mentioned, which has a high suction effect with ease of use for textile surfaces and causes low electrostatic charging phenomena.
  • a floor nozzle device of the type mentioned in which a sliding sole is provided, which is made of a composite material comprising a matrix material of at least one polymer and fibers of an electrically conductive
  • Material and / or platelets of an electrically conductive material as a filler comprises.
  • a targeted targeted air flow For aspiration of dust particles and the like by means of the floor nozzle device, a targeted targeted air flow must be able to flow.
  • a contact between the sliding sole and the textile material of the textile surface This can lead to contact electricity and electrostatic charging phenomena. This can lead to a deflection of the electrostatic dust particles and as a result to a reduced suction effect.
  • the sliding sole is made of a composite material which comprises a matrix material of at least one
  • Comprising platelets of an electrically conductive material as filler By introducing an electrically conductive filler in the form of fibers and / or platelets, a contact electricity can be reduced or completely prevented.
  • an antistatic floor nozzle device is provided.
  • the electrical conductivity is characterized by the specific resistance.
  • the resistivity is the reciprocal of the electrical conductivity of a material.
  • the filler of the composite material has a resistivity of about 100 Q-mm 2 / m or less, preferably about
  • the resistivities each refer to a material temperature of 20 ° C to 25 ° C.
  • electrical conductivity is understood to be a metallic electrical conductivity.
  • the sliding sole made of the composite material by the filler in the form of fibers made of an electrically conductive material and / or platelets of an electrically conductive material has an increased stability.
  • the floor nozzle device with the sliding sole of the composite material has preferably an increased mechanical stiffness in comparison to floor nozzle devices with sliding soles without the filler according to the invention.
  • the life of floor nozzle devices according to the invention may be increased since, compared to floor nozzle devices without sliding soles according to the invention, the time until wear phenomena occur on the sliding sole is prolonged.
  • abrasion on the sliding sole can be reduced by the filler.
  • the sliding sole is produced from the composite material according to the invention, interactions between the soleplate according to the invention and the textile surface can be optimized in such a way that the slidability of the floor nozzle device according to the invention is improved.
  • the soleplate and the textile surface for example carpet, carpet or felt, have comparable or identical surface properties and / or comprise similar materials.
  • Due to the filler of the sliding sole materials can be selected as matrix material, which are less suitable as a material for a floor nozzle device without filler.
  • polyvinyl chloride which usually electrostatically charges as the material in a bottom jet device without the filler according to the invention, can be used as matrix material for the composite material of the sliding sole.
  • the floor nozzle device according to the invention Due to the material selection according to the invention for the composite material, the floor nozzle device according to the invention in particular has an optimized lubricity, whereby the user-friendliness is optimized.
  • the fibers of an electrically conductive material and / or the platelets of an electrically conductive material are embedded as a filler in the matrix material.
  • the individual fibers of an electrically conductive material and / or the platelets of an electrically conductive material are embedded as a filler in the matrix material.
  • Platelets of an electrically conductive material are in particular completely or partially enclosed by the at least one polymer of the matrix material.
  • a stabilizing structure can be formed from the filler and, on the other hand, any contact electricity which may be produced via contact points of adjacent filler particles can be directly dissipated.
  • the fibers of an electrically conductive material in the sliding sole on a preferred direction.
  • Main extension planes of the platelets made of an electrically conductive material are aligned in a preferred embodiment substantially parallel to each other in the matrix material.
  • the main planes of extension of the platelets of an electrically conductive material are arranged substantially parallel to an outer surface of a lower side of the sliding sole.
  • the filler is at least approximately homogeneously distributed in the matrix material. This can offer the advantage that charging phenomena can be avoided or reduced over the entire area of the sliding sole.
  • the bottom nozzle device or its bottom body is made entirely of the composite material which comprises fibers of an electrically conductive material and / or platelets of an electrically conductive material as filler.
  • the composite material has a specific surface resistance of about 25 ⁇ or more, in particular about 250 ⁇ or more.
  • the composite material has a surface resistivity of about 1-10 8 ⁇ or less, for example, about 1-10 7 ⁇ or less.
  • the fibers of an electrically conductive material are carbon-based fibers, in particular carbon fibers.
  • the platelets of an electrically conductive material are carbon-based platelets, in particular carbon platelets.
  • the composite material comprises the fibers of an electrically conductive material and / or the platelets of an electrically conductive material as filler in a proportion of about 5% by weight or more, preferably of about 10% by weight or more , in particular of about 15% by weight or more. These proportions may be sufficient to sufficiently reduce electrostatic charging effects and to increase the stability of the components as compared to components made of a material without the fillers of the invention.
  • the weight% are each based on the total mass of the composite material. Furthermore, it has proved to be advantageous if the composite material, the fibers of an electrically conductive material and / or the platelets of an electrically conductive material as a filler in a proportion of about 50 wt.% Or less, preferably from about 40 wt.% Or less, in particular of about 30% by weight or less.
  • Composite material still liquefies and has sufficient good flow properties, so that it can be processed in a polymer forming process.
  • the composite material can be processed in a forming process.
  • the composite material is injection-moldable, extrudable, calendered, rotationally deformable, foamable and / or spray-blowable.
  • the bottom nozzle device and / or the sliding sole can be produced in particular in an injection molding process, an extrusion process, a calendering process, a rotational molding process, a foaming process and / or an injection blow molding process.
  • the composite material according to the invention is on the one hand slidable, so that the operability of the floor nozzle device is facilitated in comparison to less slidable components and it must be pushed with relatively little effort over a surface to be cleaned. On the other hand, electrostatic charging effects can be drastically reduced.
  • components of the composite material according to the invention have an optimized wear resistance.
  • a "fiber” is to be understood as an essentially rod-shaped object elongated in one dimension.
  • a fiber preferably has a greater extent in one dimension than in the other dimensions.
  • Fibers also include objects that are curved or have defects or dents. In particular, fibers have a length to width ratio of 3 or more.
  • a "plate” is to be understood as meaning a flat, elongated object which has a significantly smaller dimension in one dimension than in the other two dimensions.
  • the term platelet includes in particular also arched objects and / or objects with recesses.
  • the term platelet in the context of the invention also includes "flakes” and / or "flakes”.
  • the fibers of an electrically conductive material preferably have an average length of about 80 pm or more, preferably of about 100 pm or more, in particular of about 500 pm or more.
  • the platelets of an electrically conductive material preferably have an average diameter of about 80 pm or more, preferably about 100 pm or more, in particular of about 500 pm or more.
  • the diameter of the platelets of an electrically conductive material corresponds in particular to the largest width of a platelet. It is favorable if the composite material comprises fibers and / or platelets of a solid material. Preferably, the fibers of an electrically conductive material have an average length of about 4 mm or less, preferably about 3 mm or less, in particular about 2 mm or less.
  • the platelets of an electrically conductive material preferably have an average diameter of approximately 4 mm or less, preferably approximately 3 mm or less, in particular approximately 2 mm or less.
  • the platelets of an electrically conductive material with the aforementioned dimensions are large enough to increase the stability of the component or of the component and to reduce contact electricity, and on the other hand, the platelets can be made of an electrically conductive material having the stated dimensions the preparation to be introduced into the matrix material, such that the composite material is granulated in the preparation.
  • the fibers made of an electrically conductive material preferably have a diameter D 90 of 0.5 mm.
  • D 90 means in particular that 90% of the fibers have a diameter of 0.5 mm or less. The diameter is measured in particular transversely to the length of the fibers.
  • the platelets of an electrically conductive material preferably have a diameter D 90 of 3 mm.
  • D 90 especially means that 90% of the platelets have a diameter of 3 mm or less.
  • the filler can also be integrated into a granulation process by injection molding even with a maximum length / a maximum diameter.
  • the mean length and / or the mean diameter is indicated in particular as an arithmetic mean. Alternatively, it can also be provided that the mean length and / or the mean diameter are related to the median of the length distribution or diameter distribution.
  • the matrix material comprises or is formed from one or more of the following polymers: polyamide (PA), in particular polyamide 6 (PA6) or polyamide 66 (PA66), polycarbonate (PC), acrylonitrile (AC), Butadiene, styrene, in particular acrylonitrile-butadiene copolymer (ABS), polyolefin, in particular polypropylene (PP), polyketone, polymethyl methacrylate (PMMA), polyvinyl chloride (PVC).
  • PA polyamide
  • PA6 polyamide 6
  • PA66 polycarbonate
  • AC acrylonitrile
  • ABS acrylonitrile-butadiene copolymer
  • PP polypropylene
  • PMMA polymethyl methacrylate
  • PVC polyvinyl chloride
  • Embodiments of the floor nozzle device according to the invention in which the sliding sole is made of a composite material which comprises polyamide 6 and / or nylon 66 as matrix material and carbon fibers as filler in a proportion of 5% by weight to 15% by weight, preferably 10% by weight, are particularly preferred. %, includes.
  • the floor nozzle device comprises a suction mouth, which is arranged on the sliding sole and / or is formed by the sliding sole.
  • the sliding sole forms a contact surface to the surface to be cleaned and / or is arranged on an underside of the bottom body or forms the underside of the bottom body.
  • the sliding sole is formed in the operation of the bottom nozzle device in particular substantially parallel to an envelope plane of the surface to be cleaned. It is advantageous if the sliding sole during operation of the floor nozzle device forms or comprises a contact surface on which the floor nozzle device is in material contact with the surface to be cleaned.
  • the sliding sole comprises an upper portion and a lower portion, the lower portion following the upper portion and a contact surface following the lower portion and / or formed by the lower portion.
  • the fibers are made of an electrically conductive
  • Material and / or the platelets of an electrically conductive material as filler have a higher concentration in the lower region and a lower concentration in the upper region of the sliding sole.
  • the suction mouth has a first boundary wall with a first suction edge and a first boundary wall spaced second boundary wall with a second suction edge.
  • the first and the second suction edge are provided for immersion in textile material of a textile surface.
  • the first boundary wall has a first inner side and a first outer side
  • the second boundary wall has a second inner side and a second outer side.
  • the first inner side faces the second inner side, and a suction opening is formed between the first inner side and the second inner side.
  • the floor nozzle device comprises a suction head, which is arranged on the bottom body. There is at least one in the suction head
  • Flow path is formed, can be fed through the air from an environment of the bottom nozzle device through the suction head of the first suction edge on the first outer side and / or the second suction edge on the second outer side.
  • the first suction edge and / or the second suction edge form in particular components of the sliding sole.
  • the first suction edge and / or the second suction edge have, in particular towards the underside, a sharp-edged to slightly rounded end with a radius of 2 mm or less.
  • the at least one flow path has at least one outlet, which is arranged on the suction head and is associated with the respective suction edge, which is the first suction edge or the second suction edge. It can thereby produce an increased volume flow in the region of the first suction edge and / or the second suction edge, which causes an improved suction and a facilitated pushability of the floor nozzle.
  • the at least one outlet is oriented along the respective suction edge and in particular has a longitudinal extension direction which is parallel to a longitudinal direction of extension of the respective suction edge. As a result, a bypass current can be selectively supplied to the respective suction edge.
  • Flow path comprises at least one opening in the suction head, which is associated with the first suction edge and / or comprises at least one opening in the suction head, which is associated with the second suction edge.
  • first bottom wall which is connected to the first boundary wall
  • second boundary wall has a second region, which is designed as Auffahrschräge, in particular the first region adjoins the first suction edge and / or the second region adjoins the second suction edge. It can thereby achieve an optimized suction. In particular, this can be achieved in a simple manner that the first suction edge and the second suction edge can penetrate into the textile material of the textile surfaces.
  • first bottom wall and the second bottom wall provide
  • Boundary surfaces of the suction head down to the surface to be cleaned ready are Boundary surfaces of the suction head down to the surface to be cleaned ready.
  • first boundary wall, the second boundary wall, the first bottom wall and / or the second bottom wall form constituents of the sliding sole according to the invention.
  • the at least one opening, which is assigned to the first suction edge, and / or the at least one opening, which is assigned to the second suction edge has a spacing (relative to an edge, which faces the nearest suction edge) in a spacing direction between the first suction edge and the second suction edge to the associated suction edge, which is in the range between 0.5 mm and 2.5 mm. It has been found that this allows an optimized bypass air supply to the respective suction edge can be achieved and thus results in an improved suction with ease of use, especially for textile surfaces with dense textile material results.
  • the first suction edge and / or the second suction edge preferably form part of a suction channel, via which dust or the like is sucked off in an air flow.
  • the suction channel is seen from below formed substantially rectangular.
  • the suction channel has a curved shape relative to a lateral cross section.
  • a width of the suction channel transversely to a sliding direction of the floor nozzle device increases from a coupling point to a suction unit towards the textile surface by a factor of 2 or more.
  • an air supply via the at least one flow path in the suction head to the first suction edge and / or the second suction edge is adjustable by means of an adjusting device.
  • the adjusting device is designed so that an air supply through the at least one flow path to the first suction edge and / or the second suction edge can be blocked. It is also advantageous if the floor nozzle device comprises a switching device for switching from the textile surface cleaning function to a hard surface cleaning function.
  • the floor nozzle device preferably comprises a manifold, which is arranged in a region facing away from the suction head.
  • the manifold forms in particular a connection point for a connecting element to a suction unit of a vacuum cleaner.
  • About the manifold is preferably derived via the bottom nozzle device extracted dust in the suction air stream.
  • the manifold preferably forms a region of a change in the direction of the air flow, in which conventional manifolds can lead to charging effects, which are caused by an interaction of the electrostatic dust and the material of the manifold.
  • the manifold comprises a first at least approximately hohizylindrischförmigen section and a second at least approximately hohizylinderförmigen section whose longitudinal central axes are arranged at an obtuse angle to each other.
  • the obtuse angle is in particular in a range of about 100 ° to about 170 °, preferably about 110 ° to about 160 °. It has also proven to be advantageous if the first portion and the second portion of the manifold are connected together in a hinge.
  • first portion of the manifold is pivotally connected about a pivot axis with the bottom body and / or the second portion of the manifold is disposed away from the bottom body.
  • the pivot axis is preferably arranged perpendicular to the shear force direction and perpendicular to a main movement direction of the floor nozzle device.
  • the manifold has at the second portion a pivot for connection to a suction pipe.
  • the manifold is in particular rotatably connectable to the suction tube at an end remote from the first section.
  • the suction tube is rotatable by means of the rotary joint, in particular about an axis of rotation, which runs parallel to a longitudinal central axis of the second portion of the elbow.
  • the suction head is arranged pivotably on the bottom body. It can be achieved in that the first suction edge or the second suction edge, depending on the thrust direction of the floor nozzle device, deeper immersed in the textile material of the textile surface, so as to achieve an improved suction.
  • a pivoting of the suction head is preferably limited by stops which are arranged on a side facing away from the suction end of the bottom body.
  • the floor nozzle device is a floor nozzle.
  • the floor nozzle with respect to the direction of gravity seen from below has a width which is at least 1.5 times as wide as a length of the floor nozzle.
  • the width of the floor nozzle is in particular an average width transverse to the main direction of movement of the floor nozzle.
  • the length is in particular an average length parallel to the main direction of movement of the floor nozzle.
  • the main direction of movement of the floor nozzle or the floor nozzle device corresponds in particular to a sliding direction of the floor nozzle or the floor nozzle device.
  • the cleaning roller comprises a plurality of bristles and a bristle receptacle for receiving bristles and wherein the plurality of bristles, in particular in bundles, are held in the bristle receiving, wherein the bristle holder and / or the plurality of bristles of a
  • Composite material which comprises a matrix material of at least one polymer and fibers of an electrically conductive material and / or platelets of an electrically conductive material as a filler.
  • the composite material according to the invention from which the bristle holder and / or the plurality of bristles of the cleaning roller are made has the features and advantages mentioned in connection with the composite material of the sliding sole of the floor nozzle device.
  • the cleaning roller comprises a base body which is at least approximately cylindrical in shape and on the lateral surface of which the bristle holder is arranged.
  • the several bristles in particular extend at least approximately radially away from a longitudinal center axis of the cleaning roller.
  • the cleaning roller is in a mounted state to a suction machine in particular rotatably movable.
  • the bristles are provided in particular for immersing and / or combing through textile material of the textile surface to be cleaned.
  • the cleaning roller comprises about five bristles or more, in particular about 100 bristles or more, for example about 500 bristles or more.
  • the cleaning roller comprises about 100,000 bristles or less, more preferably about 50,000 or less, for example, about
  • a cleaning roller according to the invention comprises both bristles of the composite material according to the invention and bristles of other materials.
  • all bristles of the cleaning roller are made of the composite material according to the invention.
  • a suction machine comprising a floor nozzle device according to the invention and / or a cleaning roller according to the invention.
  • the suction machine is designed as a vacuum cleaner.
  • the suction machine is designed as a self-propelled and self-steering vacuum robot.
  • the suction machine is designed as a sweeper.
  • Figure 1 is a schematic partial side sectional view of a Ausry
  • a floor nozzle device according to the invention in a textile surface cleaning function
  • FIG. 2 is the same view as Figure 1, wherein in comparison to Figure 1, another position of an adjusting device is shown;
  • FIG. 3 shows a variant of the floor nozzle device according to FIG. 1 with an alternative embodiment of an adjusting device;
  • Figure 4 is a view of a suction head of the floor nozzle device according to
  • Figure 5 is a bottom view of another embodiment of a
  • Figure 6 is a bottom view of another embodiment of a
  • FIG. 7 shows the floor nozzle device according to FIG. 1 in a hard surface cleaning function
  • FIG. 8 shows a further embodiment of a floor nozzle device in a hard surface cleaning function
  • a further embodiment of a floor nozzle device in a textile surface cleaning function the floor nozzle device according to FIG.
  • a bottom view of a suction head of the bottom nozzle device according to Figure 9 a sectional view of a suction channel of the bottom nozzle device according to Figure 9 taken along a plane which is perpendicular to a direction of a forward thrust and perpendicular to an envelope plane of a surface to be cleaned; a further embodiment of a floor nozzle device in a textile surface cleaning function; a schematic perspective view of a cleaning roller according to the invention; a schematic view of a suction machine according to the invention in the form of a vacuum robot from below; a diagram of measurement results for investigations of the electrostatic charging of weighted test bars made of different materials; and
  • FIG. 17 shows a further diagram of measurement results for investigations of the sliding force with comparable dust absorption of floor nozzles made of different materials.
  • a first exemplary embodiment of a floor nozzle device according to the invention which is shown schematically in FIGS. 1 and 2 and denoted there by 11, is provided for connection to a vacuum cleaner with a suction unit 12.
  • the floor nozzle device 11 is in the present case designed as a floor nozzle 10.
  • the floor nozzle 10 is designed in particular for connection to a suction pipe or a suction hose of the vacuum cleaner.
  • the floor nozzle 10 has a bottom body 14. On the bottom body 14, a connection 16 is arranged, via which the floor nozzle 10 can be connected to the vacuum cleaner in order, in particular, to establish a fluid-effective connection with the suction unit 12.
  • the port 16 includes a pipe stub
  • connection 16 of the pipe socket 18 is rotatable about a hinge 20 about a rotation axis 22.
  • the bottom body 14 has a first part 24 and a second part 26.
  • At least one support wheel 28 and in particular a pair of support wheels 28 are arranged on the bottom body 14, via which the floor nozzle 10 can be supported on a surface 30 to be cleaned.
  • the at least one support wheel 28 may be arranged on the first part 24, the second part 26 or on both parts 24, 26.
  • the support wheel or wheels 28 are in particular rotatable about a rotation axis 32.
  • the first part 24 is pivotally mounted on the second part 26 via a hinge 34. At the second part 26 of the terminal sits 16.
  • the second part 26 and the port 16 preferably form a manifold
  • the second part 26 forms in particular a first section of the The manifold 16 in particular forms a second section of the manifold 19.
  • a corresponding pivot axis 36 is in particular parallel to the axis of rotation 32.
  • the hinge 34 is arranged so that the pivot axis 36 coincides with the axis of rotation 32 or lies in the vicinity of this axis of rotation 32.
  • different holding heights correspond in particular to different angles, with which a suction pipe arranged on the connection 16 is positioned to the surface 30 to be cleaned.
  • the joint 34 just allows just such different heights.
  • a suction head 38 is arranged on the bottom body 14.
  • the suction head 38 provides support for the floor nozzle 10 at a distance from the support wheel (s) 28 and effects suction flow of the surface 30 to be cleaned.
  • the suction head 38 is arranged on the first part 24 of the bottom body 14. In one embodiment, the suction head 38 is mounted via a pivot joint 40 on the first part 24 of the bottom body 14.
  • the pivot joint 40 defines a pivot axis 42 which is parallel to the axis of rotation 32 and the pivot axis 36, respectively.
  • the sliding sole 41 is made of a composite material.
  • the composite material comprises at least one polymer as the matrix material and fibers of an electrically conductive material and / or platelets of an electrically conductive material as a filler.
  • the composite material comprises at least one polymer and carbon-based fibers, for example carbon fibers as filler.
  • the composite comprises in particular carbon-based platelets, for example carbon platelets as filler.
  • the composite material is preferably an injection moldable material.
  • the composite material comprises the fibers of an electrically conductive material and / or the platelets of an electrically conductive material in a proportion of 10 to 20 wt.% Based on the total mass of the composite material.
  • the at least one polymer of the matrix material comprises or is formed from one or more of the following polymers: polyamide (PA), in particular polyamide 6 (PA6) or polyamide 66 (PA66), polycarbonate (PC), acrylonitrile (AC), butadiene , Styrene, in particular acrylonitrile-butadiene copolymer (ABS), polyolefin, in particular polypropylene (PP), polyketone, polymethyl methacrylate (PMMA), polyvinyl chloride (PVC).
  • PA polyamide
  • PA6 polyamide 6
  • PA66 polycarbonate
  • AC acrylonitrile
  • ABS acrylonitrile-butadiene copolymer
  • PP polypropylene
  • PMMA polymethyl methacrylate
  • PVC polyvinyl chloride
  • polyamide 6 or polyamide 66 forms the matrix material.
  • the fibers of an electrically conductive material and / or platelets of an electrically conductive material have an average length / diameter of about 100 pm to about 3 mm.
  • the composite material has a surface resistivity of approximately 250 ⁇ to approximately 1-10 7 ⁇ .
  • the filler in particular has a specific resistance of
  • the suction head 38 is mounted in the manner of a rocker on the bottom body 14. This makes possible an improved cleaning result, in particular in a textile surface cleaning function, in that a front suction edge (first suction edge 74, see below) moves deeper into textile material during a forward thrust 44 of the floor nozzle 10 over the surface 30 to be cleaned in comparison to a rear suction edge can penetrate to be cleaned surface 30, and at a backward thrust the rear suction edge (second suction edge 76, see below) can penetrate deeper into the textile material than the front suction edge.
  • first suction edge 74 moves deeper into textile material during a forward thrust 44 of the floor nozzle 10 over the surface 30 to be cleaned in comparison to a rear suction edge can penetrate to be cleaned surface 30, and at a backward thrust the rear suction edge (second suction edge 76, see below) can penetrate deeper into the textile material than the front suction edge.
  • the forward thrust 44 preferably corresponds to a main direction of movement of the floor nozzle 10.
  • the first suction edge 74 and the second suction edge 76 are part of the sliding sole 41 and made of the composite material according to the invention.
  • a suction mouth 48 is arranged at the suction head 38.
  • the suction mouth 48 comprises a first boundary wall 50 and a second boundary wall 52 opposite the first boundary wall (see also FIG. 4).
  • a ceiling wall 54 Positioned transversely to the first boundary wall 50 and the second boundary wall 52 is a ceiling wall 54 which is connected to the first boundary wall 50 and the second boundary wall 52.
  • the top wall 54 closes the suction mouth 48 upwards away from the surface 30 to be cleaned, when the floor nozzle 10 over the or Support wheels 28 and the suction head 38 is supported on the surface 30 to be cleaned.
  • an opening 56 is formed in the top wall 54.
  • At least one channel 58 which runs through the suction head 38 and the bottom body 14 to the connection 16, is connected to this opening 56.
  • a suction chamber 60 is formed between the first boundary wall 50, the second boundary wall 52 and the top wall 54. Via the channel 58 of the suction chamber 60 is fluidly connected to the suction unit 12, so that at a corresponding negative pressure by the suction unit 12 in the suction chamber 60 may act a suction flow.
  • the first boundary wall 50 has a first inner side 62 a, which limits the suction chamber 60. It has a first outer side 62b, which faces away from the first inner side 62a.
  • the second boundary wall 52 has a second inner side 64a, which delimits the suction chamber 60 and faces the first inner side 62a.
  • the second boundary wall 52 also has a second outer side 64b, which faces away from the second inner side 64a.
  • the suction chamber 60 is laterally closed by opposite side walls 66, 68, which are connected to both the first boundary wall 50 and the second boundary wall 52. Between the first boundary wall 50, the second boundary wall 52 and the side walls 66, 68, a suction opening 70 of the suction mouth 48 is formed. Through the suction opening 70, the suction chamber 60 is open to the surface to be cleaned 30 (when the floor nozzle 10 is positioned on the operative surface 30 to be cleaned). Via the suction opening 70, the surface 30 to be cleaned can be subjected to a suction flow and thus suctioned off.
  • the suction mouth 48 forms a suction channel via the suction chamber 60 and the suction opening 70, which is open to the surface 30 to be cleaned.
  • the floor nozzle 10 is provided for the extraction of textile surfaces 72 as surfaces 30 to be cleaned.
  • Such a textile surface 72 is made of textile material.
  • the corresponding textile surface 72 is for example a carpet or a carpet.
  • a first suction edge 74 is formed on the front side in the region of the suction opening 70.
  • a second suction edge 76 is formed on the front side in the region of the suction opening 70.
  • the first suction edge 74 and the second suction edge 76 are formed for example by a correspondingly thin design of the first boundary wall 50 and the second boundary wall 52 at their respective end face.
  • first boundary wall 50 or the second boundary wall 52 provision is made for the first boundary wall 50 or the second boundary wall 52 to be wedge-shaped on the end face in order to form the respective suction edge 74 or 76.
  • the first boundary wall 50 has a greater distance from the connection 16 or the support wheel 28 than the second boundary wall 52.
  • the pivotable mounting of the suction head 38 on the bottom body 14 ensures that during a forward stroke 44, the first suction edge 74 Accordingly, the suction head 38 is formed and mounted so that in a backward stroke 46, the second suction edge 76 penetrates deeper into the textile material of the textile surface 72 as the first suction edge 74.
  • the first suction edge 74th and the second suction edge 76 are formed so that in the textile surface cleaning function they are in an operative position and immerse in the textile material of the textile surface 72 or can penetrate. As a result, dust can be effectively removed from the textile material of the textile surface 72.
  • a wedge surface for the first suction edge 74 is oriented such that it lies between the first inner side 62a and the first outer side 62b and thereby from the first inner side 62a to the first outer side 62b recedes.
  • a corresponding wedge surface on the second suction edge 76 is then in particular formed such that it lies between the second inner side 64a and the second outer side 64b and recedes toward the second outer side 64b.
  • the suction head 38 has a first bottom wall 78 opposite a surface 30 to be cleaned.
  • This first bottom wall 78 is connected to the first boundary wall 50. It adjoins directly to this and is oriented transversely to the first boundary wall 50.
  • the first bottom wall 78 leads from the first boundary wall 50 in a direction to a front end 80 of the suction head 38.
  • the suction head 38 also has a rear end 82 facing away from the front
  • the rear end 82 is closer to the support wheel 28 and to the terminal 16 than the front end 80th
  • the first bottom wall 78 has a first portion 84 oriented at a (small) acute angle 86 to an envelope 88 to the first suction edge 74 and the second suction edge 76.
  • the acute angle 86 is oriented so that the first bottom wall 78 recedes in the first region 84 with respect to the envelope 88 in the direction of the front end 80 back.
  • a transition region 77 between the first suction edge 74 and the first region 84 is arranged.
  • a main extension plane of the transition region 77 preferably includes a at least approximately right angle with a main extension plane of the first boundary wall 50 and / or the first inner side 62 a.
  • the main extension plane of the transition region 77 encloses an obtuse angle with a main extension plane of the first region 84.
  • the transition region 77 adjoins the first region 84 in a blunt edge or in a rounded section.
  • transition region 77 has a planar portion, which in particular is aligned substantially parallel to the envelope 88.
  • the suction head 38 has a second bottom wall 90.
  • This second bottom wall 90 is connected to the second boundary wall 52 and connects to this. It extends from the second boundary wall 52 (from the outside 64b) toward the rear end 82 of the suction head 38.
  • the second bottom wall 90 has a second region 92 which is oriented at an acute angle 94 to the envelope 88.
  • the second region 92 is designed so that it recedes from the second boundary wall 52 toward the rear end 82 with respect to this envelope 88.
  • the first region 84 and the second region 92 are formed by their angled arrangement to the envelope 88 as Auffahrschrägen.
  • the acute angle 86 or 94 is in particular in the range between 5 ° and 15 °.
  • the first suction edge 74, the second suction edge 76, the first boundary wall 50, the second boundary wall 52, the first bottom wall 78 and / or the second bottom wall 90 are preferably components of the sliding sole 41.
  • the first boundary wall 50 and the second boundary wall 52 may be perpendicular or at an angle to the envelope 88. They can be parallel or not aligned parallel to each other or even parallel to each other.
  • the second region 92 is followed by a region 96, which is oriented, for example, parallel to the envelope 88.
  • first bottom wall 78 in its first region 84 and / or the second bottom wall 90 in its second region 92 can come into contact with textile material of the textile surface 72.
  • no contact of the region 96 with the textile surface 72 is provided in a normal use.
  • a thread lifter 98a, 98b are respectively arranged on the first region 84 of the first bottom wall 78 and on the second region 92 of the second bottom wall 90.
  • a first channel 104 is formed in the suction head 38, which is associated with the first suction edge 74.
  • This first channel 104 has an inlet 106 from which air from the surroundings of the floor nozzle 10 can be coupled into the corresponding flow path 102 '(that is to say into the channel 104).
  • the inlet 106 is formed by one or more openings formed between the first bottom wall 78 and a front wall 108 of the suction head 38.
  • On the front wall 108 is the front end 80 of the suction head 38th
  • the proper inlet 106 of the air outlet nozzle 10 is located at a distance from an upper side of the textile surface 72 for air.
  • a second channel 110 is formed for the flow path 102 in the suction head 38, which (at least) has an inlet 112, which lies for example between the region 96 of the second bottom wall 90 and a rear wall 114 of the suction head 38.
  • the rear end 82 of the suction head 38 is located on the rear wall 114.
  • the inlet 112 is properly spaced and spaced from an upper surface of the textile surface 72.
  • the inlet or outlet 106 or 112 may also be arranged at a different location of the suction head 38 or the bottom body 14 (with a corresponding channel connection to the suction head 38) to a Luftzu- flow from the vicinity of the floor nozzle 10 through the suction head 38 therethrough enable.
  • the first bottom wall 78 forms a boundary of the first channel 104 with a corresponding inner side.
  • the second bottom wall 90 forms a boundary of the second channel 110.
  • the first channel 104 has an outlet 116 over which in the
  • Flow path 102 'flowing air at the first outer side 62b of the first boundary wall 50 of the first suction edge 74 can be fed.
  • an additional air flow 118 'to the air flow 100' is provided at the suction edge 74 via the flow path 102 ', which improves a suction result.
  • the second channel 110 has an outlet 120, via which an additional air flow 118 can be provided on the second outer side 64b of the second suction edge 76.
  • This additional airflow 118 is an additional airflow relative to the airflow 100 through the textile material. It is thereby improved the suction effect.
  • the outlet 116 includes a plurality of openings 122 in the first bottom wall 78 in the immediate vicinity of the first suction edge 74.
  • the openings 122 are slit-shaped and establish a flow-effective connection between the interior of the suction head 38 with the first channel 104 and an outer space in the region of the first suction edge 74.
  • the openings 122 are arranged in a row, wherein a longitudinal extension direction 124 of this row is in particular at least approximately parallel to the first suction edge 74.
  • the outlet 120 is formed by openings 122 ', more particularly spaced slot-shaped openings in a row are arranged with a longitudinal extension direction at least approximately parallel to the second suction edge 76 (see Figure 4).
  • both the first suction edge 74 and the second suction edge 76 are assigned a respective outlet 116 with openings 122 or 120 with openings 122 '.
  • the openings 122, 122 ' have a width B in a spacing direction 126 between the first suction edge 74 and the second suction edge 76, which lies in the range between 0.8 mm and 2.5 mm (see FIG. ,
  • This size dimension applies equally to the openings 122 associated with the first suction edge 74 and to the openings 122 'associated with the second suction edge 76.
  • a single opening 122 or 122 ' has a length L in a transverse direction 128 to the spacing direction 126, which follows the corresponding suction edge 74 and 76, respectively.
  • the openings 122, 122 ' have a length L of the order of about 15 mm. It is envisaged that over all openings 122 or 122 'of the outlet 116 or 120, the total length of the outlet 116 or 120 as sum of all lengths L is at least 30% and preferably at least 70% of the corresponding associated first suction edge 74 or 76.
  • a suction edge 74 or 76 it is possible for a suction edge 74 or 76 to have a rectilinear extent (FIGS. 4, 5).
  • first suction edge and / or a second suction edge 130 (FIG. 6) to have a non-rectilinear design and, for example, to have a central region 132 on which curved on both sides
  • a corresponding outlet 136 with openings 138 follows the course of this suction edge (in the embodiment of the second suction edge 130) including the curvature.
  • a length of a corresponding opening 138 is then a length along a course line which is parallel to a course line of the corresponding second suction edge 130.
  • the size dimensions mentioned here also apply to the width B and the distance D.
  • a total length of the outlet 136 as the length of all openings 138 along the course of the second suction edge 130 is at least 30% and preferably at least 70% of the corresponding length of the second suction edge 130 along this course.
  • openings 122, 122 ', 138 are arranged in a row, lie between adjacent openings webs 140, which are in particular airtight. It is achieved by a high stability.
  • a corresponding outlet 116, 120, 136 may be formed by a single opening. It is also possible that the corresponding openings are formed for example by a plurality of round holes or even square holes.
  • the slot-shaped openings 122, 122 ', 138 in the embodiments shown are rounded at their corners.
  • suction edge 74, 76 can be the corresponding suction edge 74, 76 supply a bypass air flow, which comes from the environment of the floor nozzle 10 and at least partially the suction head 38 has flowed through.
  • an adjustment device 142 is provided, via which the air flow (bypass air flow) 118, 118 'can be varied by the respective outlets 116, 120.
  • the adjusting device 142 comprises, associated with the respective outlets 116, 120, an adjusting element 144 which can act on the corresponding outlet 116, 120, 136 and via which an opening cross-section of the outlet 116, 120, 136 can be varied.
  • the adjustment member 144 is configured to provide the "closed outlet” positions 116 and 120 (with closed openings 122, 122 ') and the "open outlet” position.
  • the adjustment members 144 are corresponding walls of the slider 146.
  • Flow paths 102, 102 ' is present no negative pressure, no air is sucked into the channels 104 and 110 in the rule.)
  • the adjusting device can also be provided if only one single suction edge 74 or 76 is associated with an outlet (see FIG.
  • FIG. 3 of a floor nozzle device 11 'embodied as a floor nozzle 10' has a variant of an adjustment device 152.
  • an adjusting device 152 see Figure 3
  • the same reference numerals are used for the same elements as in the floor nozzle 10 according to Figures 1 and 2
  • the adjusting means 152 adjusting elements 154, which for immersion in corresponding openings 122, 122 'are provided.
  • the adjusting elements 144 are provided for covering the opening 122, 122 ', wherein in particular a cover between the corresponding first boundary wall 50 and the first bottom wall 78 and the second boundary wall 52 and the second bottom wall 90 takes place in an interior of the suction head 38.
  • Openings 122, 122 ' are basically their opening areas variable.
  • the adjusting elements 154 are formed so that depending on their depth of immersion in the corresponding
  • Opening 122, 122 ' is a different opening area of the corresponding openings 122, 122 ', which results between zero inclusive and non-immersion complete opening.
  • the air flow 118, 118 ' which is then additionally present at the suction edges 74, 76, set between "present” and “not present” (zero air flow).
  • the additional air flow in intermediate regions can be varied depending on the insertion depth of the adjustment element 154 into the associated openings 122, 122 '.
  • the adjustment device 142 or 152 makes it possible to adapt to different types of textile material, such as, for example, types of carpet. For example, an additional airflow 118, 118 'is not necessary for heavily air-permeable carpets. With closed outlets 116 and 120, a better suction can then be achieved with such a material.
  • the floor nozzle 10 has a width b 2 on the suction head 38 (FIG. 5).
  • the suction port 70 extends in the same direction over a width bl. It is provided that the width bl at least approximately corresponds to the width b2 and preferably the width bl is at least 90% and preferably at least 95% of the width b2.
  • the floor nozzle 10 may be formed so that it alone has a textile surface cleaning function. It is then the first suction edge 74 and the second suction edge 76 constantly in an operative position.
  • floor nozzle devices 11 ", 11" 'designed as floor nozzle 10 ", 10"' also each have a hard surface cleaning function.
  • a floor installation device 156 is arranged on the suction head (cf., for example, FIG. 2, which is in a non-operative position in the textile surface cleaning function).
  • the floor installation device 156 comprises brush lips 157 (or rubber lips), for example, which are in an operative position in the hard surface cleaning function and which are then supported on the surface 30 to be cleaned. (See Figures 7 and 8). In such a support then the first suction edge 74 and the second suction edge 76 in a non-operative position. This will be explained in more detail with reference to the embodiments according to FIGS. 7 and 8.
  • FIG. 7 shows the floor nozzle device 11 "designed as a floor nozzle 10, in which the floor installation device 156 is in an operative position and thus the floor nozzle 10" in a hard surface device. Cleaning function is. In this position, a hard surface 158 can be sucked off as a surface to be cleaned 30 via the floor nozzle 10 ".
  • the ground facility 156 defines an envelope surface 160 over which it rests on the hard surface 158. In a height direction, the first suction edge 74 and the second suction edge 76 are spaced from this envelope surface 160 such that they are non-operational and do not touch the surface 30 to be cleaned.
  • a switching device 162 is provided, by way of which it is possible to switch between the textile surface cleaning function and the hard surface cleaning function of the floor nozzle 10 ".
  • the floor installation device 156 is in a non-operative position and thereby displaced into the suction head 38 in such a way that the surface 30 to be cleaned is not acted upon (FIG. 1).
  • the first suction edge 74 and the second suction edge 76 are in an operative position and they can penetrate into the textile material of the surface 30 to be cleaned.
  • the bottom equipment 156 is positioned over the switch 162 on the suction head 38 such that the envelope surface 160 is beyond the first suction edge 74 and the second suction edge 76.
  • the first suction edge 74 and the second suction edge 76 are in a non-operative position and the ground engaging device 156 is in the operative position.
  • the floor installation device 156 in the hard surface cleaning function provides a fluid (approximately) sealing of a space 164 between the floor installation device 156 and the hard surface 158, with the suction mouth 48 positioned with the suction opening 70 in this space.
  • the switching device 162 is coupled to an adjustment device 166 for the additional air streams 118, 118'.
  • the adjusting device 166 in this case has adjusting elements 168, which are coupled to the switching device 162 and serve to close the outlets 116, 120 with the openings 122, 122 '.
  • the adjustment elements 168 are positioned to release the outlets 116, 120 and so the additional air streams 118, 118 'the first suction edge 74 and the second suction edge 76 on the respective outer side of the access and boundary walls can be acted upon.
  • the adjustment elements 168 are designed as a slide or arranged on a slide 170, which is guided displaceably in the suction head 38 in a variant.
  • a displacement movement and positioning of the slider 170 is effected via the switching means 162 in such a way that as described in the operative position of the ground installation means 156, the outlets 116, 120 are closed and in the operative position of the suction edges 74, 76 (in one non operative position of the ground facility 156) the outlets 116, 120 are open.
  • the floor nozzle 10 for the textile surface cleaning function has an additional flow path 102, 102 'for each of its suction edges 74, 76 or only a suction edge 74 or 76, via the air from the environment on an outer side of the suction mouth 48 of the respective suction edge 74, 76 is provided.
  • the floor nozzle absorbs less to the textile material and the pushing force that is necessary for moving the floor nozzle on the textile material is reduced.
  • an outlet 116 or 120 are closable or adjustable in cross-section to allow adaptation to textile material.
  • Opening width (including closeability) to a switching between textile surface cleaning function and hard surface cleaning function is possible.
  • Limiting wall 50, 52, to which the suction edge 74 and 76 are formed are assigned.
  • the ambient air, which then flows in via the corresponding additional air flow 118, 118 ', is less throttled than the air flows 100, 100', which flow through the textile material to the suction opening 70.
  • the suction air in the additional air streams 118, 118 ' has a shorter path through the textile material and is less throttled.
  • a large volume flow is present at the corresponding suction edge 74, 76.
  • this is connected to a suction unit 12.
  • an operator moves the floor nozzle 10 over the surface 30 to be cleaned.
  • FIG. 9 Another embodiment of a bottom nozzle device 111 according to the invention is shown schematically in FIG.
  • the floor nozzle device 111 is formed as a floor nozzle 101 according to this embodiment.
  • the bottom nozzle device 111 according to the exemplary embodiment of FIG. 9 differs essentially from the exemplary embodiments of FIGS. 1 to 3 in that there are no bypass channels and no ambient air flows in as an additional air flow 118, 118 '.
  • the floor nozzle 101 does not comprise an adjusting device 142.
  • the first suction edge 180 and the second suction edge 182 each form part of the sliding sole 177.
  • the first boundary wall 179 and the second boundary wall 181 preferably form components of the sliding sole 177.
  • FIG. 9 is identical to the exemplary embodiment shown in FIG. 1, so that reference is made to the description thereof.
  • FIG. 10 embodiment of a designed as a floor nozzle 101 'bottom nozzle device 111' differs in
  • a space 200 is created between a lower side 198 of the sliding sole 202, the suction space 204 and the surface 30 to be cleaned, which is sealed by the brush lips 186, 186 '.
  • FIG. 10 corresponds to the exemplary embodiment illustrated in FIG. 9, so that reference is made to the description thereof in this respect.
  • the bottom nozzle device 111 preferably has a suction channel 175 with a substantially rectangular cross-section.
  • the cross section is taken in particular along a plane which runs parallel to the textile surface 178.
  • the suction channel 175 is preferably formed laterally closed.
  • the suction channel 175 has in particular a curved shape.
  • the width of a cross section decreases towards lateral edges of the floor nozzle 101.
  • the cross-section is taken perpendicular to an envelope surface of the textile surface 178 passing through the center of the suction channel 175.
  • the exemplary embodiment of a bottom nozzle device 111 "designed as a bottom nozzle 101 differs from the embodiment of a bottom nozzle device 111 shown in FIG. 9 essentially in that the sliding sole 206 does not extend over the entire underside 207 of the suction head 208.
  • the sliding sole 206 made of the composite material is in this case designed in two parts and in each case in the region of the first suction edge 210
  • the soleplate 206 extends substantially over the areas that are in material contact with the textile material of the surface 30 to be cleaned in the textile area cleaning function.
  • a large part of the bottom nozzle device 111 can be made of a plastic material different from the composite material, for example, for areas other than the sliding sole 206, a plastic material without filler or a plastic material different from the composite material Be used for II substances.
  • the exemplary embodiment of a bottom nozzle device 111 "shown in Figure 13 corresponds to the embodiment shown in Figure 9, so that reference is made to the description thereof in Figure 14.
  • An embodiment of a cleaning roller 220 according to the invention is shown schematically in Figure 14.
  • the cleaning roller 220 is particularly suitable for use in a floor nozzle device or a suction machine according to the invention
  • Cleaning roller 220 are mounted and used in a sweeper or a self-propelled and self-steering vacuum robot.
  • the cleaning roller 220 preferably has an at least approximately cylindrical base body 222.
  • the cleaning roller 220 further comprises in particular a shaft 224, which is arranged on opposite end sides of the base body 222 and the rotatable attachment to a (not shown) cleaning roller receptacle is used.
  • the shaft 224 is arranged parallel to a longitudinal central axis 226.
  • the longitudinal center axis 226 is parallel to a rotation axis about which the cleaning roller 220 is rotatably mounted.
  • a bristle receptacle 230 for receiving a plurality of bristles 232 is arranged on a lateral surface 228 of the base body 222.
  • the bristles 232 are in particular substantially cylindrical, for example circular cylindrical. Individual bristles 232 preferably have a diameter perpendicular to their main extension direction of about 0.3 mm to 2.0 mm, preferably 0.5 mm to 1.5 mm.
  • the base body 222 forms the bristle receptacle 230.
  • the bristle receptacle 230 comprises openings 234, in particular parallel rows of openings 234 in projections 236, which are arranged on the lateral surface 228 of the base body 222.
  • the projections 236 are preferably rib-shaped and extend parallel to the longitudinal central axis 226 along the lateral surface 228.
  • bristles 232 are accommodated, which are arranged in bundles 235.
  • the bundles 235 preferably have a diameter of about 5 mm or more.
  • the bristles 232 extend in bundles 235 radially away from the longitudinal central axis 226.
  • the bundles 235 are arranged in particular in rows, which are arranged parallel to one another.
  • the dust In an assembled state of the cleaning roller 220, the dust is whirled up by means of the bristles 232 in the rotating operation of the cleaning roller 220 and thrown into an adjacently arranged suction space in which the dust is sucked off.
  • the bristles 232 have a length of about 5 cm or more, more preferably about 15 cm or less.
  • the overall diameter of the cleaning roller 220 is preferably about 10 cm or more to about 40 cm, preferably about 25 cm or more. Preferably, the total diameter of the cleaning roller 220 is about 40 cm or less, more preferably about 35 cm or less.
  • the bristles 232 are preferably arranged in bundles 235 which extend radially away from the longitudinal central axis 226.
  • the bundles 235 preferably form rows of bundles 235, which are arranged parallel to the longitudinal central axis 226 in the projections 236 of the bristle holder 230.
  • One row comprises, for example, 50 to 60 bundles 235.
  • Bundles 235 of bristles 232 are arranged helically or v-shaped around the base body 222.
  • the bristles 232 according to the invention are made of a composite material comprising a polymer and carbon-based fibers and / or carbon-based platelets as filler.
  • Polyamide in particular polyamide 6 or polyamide 66, is preferably suitable as the matrix material.
  • the composite material contains carbon fibers in a proportion of about 13% by weight, based on the total mass of the composite material.
  • FIG. 15 shows an embodiment of a suction machine 242 designed as a self-steering and self-propelled vacuum robot 240 from below.
  • the vacuum robot 240 includes a floor nozzle device 244.
  • the vacuum robot 240 forms a suction head 246, which has an at least approximately spherical segment-shaped area includes, which forms in the operation of the vacuum robot 240 facing away from the surface to be cleaned 30 upper side.
  • the at least approximately spherical segment-shaped region of the suction head 246 is formed, for example, flattened and / or is closed at its edges by one of the surface to be cleaned 30 facing bottom 241.
  • the underside 241 is arranged with respect to the direction of gravity below the suction head 246 and is formed substantially planar. In operation of the vacuum robot 240, areas of the underside 241 are preferably in direct material contact with the surface 30 to be cleaned. In addition or alternatively, areas of the bottom 241 in operation of the vacuum robot 240 in particular a small distance to the surface to be cleaned, such that a Air flow between the bottom 241 and the surface to be cleaned 30 can be generated by the dust and the like is sucked.
  • the underside 241 preferably comprises a sliding sole 248, which in one embodiment forms the underside 241.
  • the sliding sole 248 partially forms the lower side 241 and other regions have different properties.
  • the sliding sole 248 is produced according to the invention from a composite material.
  • the composite material comprises at least one polymer as matrix material and carbon-based fibers, in particular carbon fibers, and / or carbon-based platelets, in particular carbon platelets, as filler.
  • the sliding sole 248 comprises as the matrix material polyamide 6, in which about 10 wt.% To about 12 wt.% Carbon fibers are dispersed.
  • the carbon fibers in the raw state preferably have a length of about 1 to about 4 mm.
  • the sliding sole 248 is manufactured in an injection molding process.
  • all areas of the bottom 241, which are in direct contact with the surface 30 to be cleaned during operation of the vacuum robot 240, are formed by the sliding sole 248 of the composite material according to the invention.
  • the sliding sole 248 comprises an opening 250, which forms a suction mouth 252. About the suction mouth 252 dust can be sucked by means of negative pressure.
  • the composite material has one or more of the features and advantages explained above.
  • the suction mouth 252 is formed in a parallel to the bottom 241 taken cross-section substantially rectangular.
  • the suction mouth 252 has a main extension direction, which is aligned substantially perpendicular to a main movement direction 254 of the suction robot 240.
  • a cleaning roller 256 according to the invention is arranged in an edge region of the suction mouth 252, the bristle filaments and / or bristles of which are produced from the composite material according to the invention.
  • a longitudinal central axis of the cleaning roller 256 is in
  • the suction mouth 252 is preferably designed as in the exemplary embodiments described in connection with FIGS. 1 to 13.
  • the vacuum robot 240 includes on its underside 241, for example in an equatorial area of the underside 241, a wheel 258, preferably two wheels 258, 258 ', for moving the vacuum robot 240 on the surface to be cleaned 30.
  • the wheels 258, 258 ' rotatably mounted about axes of rotation, which are arranged perpendicular to the main movement direction 254 of the vacuum robot 240.
  • the axes of rotation of the wheels 258, 258 ' enclose an obtuse angle with each other and / or the axes of rotation at the intersection of the axes of rotation of the two wheels 258, 258' each include an acute angle with the main direction of movement 254 of the vacuum robot 240.
  • the vacuum robot 240 is movable over the surface 30 to be cleaned.
  • the vacuum robot 240 comprises a control device 260 for controlling the movement and suction power of the vacuum robot 240.
  • the control device 260 preferably comprises one or more sensor devices.
  • FIG. 16 shows a diagram in which measurement results are documented. The charging V in volts [V] of test bars of different materials was measured. Test rod ends with a sprayed smooth surface and a width of about 20 mm, a thickness of about 4 mm and a length of about 35 mm were used. The test bars were pressed with a force of 30 N on a test carpet according to EN 60312 and moved with an average speed of 0.3 m / s with 10 double strokes over a sliding length of about 20 cm. To determine the frictional force according to FIG.
  • a test rod according to DIN EN ISO 527-2 Type 1A with a length of approximately 170 mm, a width of approximately 20 mm and a thickness of approximately 4 mm with a total weight of 800 g was in each case obtained
  • the weight was placed in the rear area of the test bar when viewed in the pulling direction.
  • PA6 polyamide 6
  • PC / ABS polycarbonate / acrylonitrile-butadiene-styrene copolymer
  • Polyamide 6 with a glass fiber content of 15 wt.% (PA6GF15) and
  • test bars made of PC / ABS and PMMA compared to test bars made from the inventive composite material PA6CF15 are insulated in this respect not meaningful, since due to the high electrostatic charge is a worse in relation to dust pickup and the suction power for comparable dust recordings must be increased so that the expended pushing force is significantly increased (see Figure 17).
  • FIG. 17 shows a diagram in which measurement results for investigations of the pushing force F 2 to be applied in the case of bottom nozzles made of different materials are shown.
  • the sliding force of a floor nozzle to be used was measured as a function of the materials with a previously set comparable dust absorption dpu c in% (more than 80%) in accordance with the standard EN 60312.
  • Polyamide 6 with a carbon fiber content of 15% by weight (PA6CF15)
  • PC / ABS Polycarbonate / acrylonitrile-butadiene-styrene copolymer
  • PA6GF15 Polyamide / acrylonitrile-butadiene-styrene copolymer
  • PA / ABS Polyamide / acrylonitrile-butadiene-styrene copolymer
  • the floor nozzle comprising the composite material PA6CF15 according to the invention exhibits the best sliding behavior in the materials investigated. Relative to the dust absorption, the floor nozzle of the composite material according to the invention has the best sliding behavior.

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

Abstract

L'invention concerne un dispositif de buses de sol présentant une fonction de nettoyage de surfaces textiles, comprenant un corps de sol (14) et une semelle de glissement (41; 177; 202; 206; 248) laquelle est en contact avec une surface textile (30) à nettoyer durant le fonctionnement du dispositif de buses de sol (11; 11'; 11''; 11'''; 111; 111'; 111''; 244), la semelle de glissement (41; 177; 202; 206; 248) étant fabriquée à partir d'un matériau composite qui comprend un matériau de matrice composé d'au moins un polymère et des fibres composées d'un matériau conducteur électrique et/ou de plaquettes composées d'un matériau conducteur électrique comme matériau de remplissage.
EP17727889.2A 2017-06-06 2017-06-06 Dispositif de buses de sol, rouleau de nettoyage pour le nettoyage d'une surface textile et machine d'aspiration Pending EP3634193A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2017/063649 WO2018224127A1 (fr) 2017-06-06 2017-06-06 Dispositif de buses de sol, rouleau de nettoyage pour le nettoyage d'une surface textile et machine d'aspiration

Publications (1)

Publication Number Publication Date
EP3634193A1 true EP3634193A1 (fr) 2020-04-15

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EP17727889.2A Pending EP3634193A1 (fr) 2017-06-06 2017-06-06 Dispositif de buses de sol, rouleau de nettoyage pour le nettoyage d'une surface textile et machine d'aspiration

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EP (1) EP3634193A1 (fr)
CN (1) CN110708993A (fr)
WO (1) WO2018224127A1 (fr)

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Publication number Priority date Publication date Assignee Title
EP4311463A1 (fr) * 2022-07-26 2024-01-31 Nilfisk A/S Buse d'aspiration et aspirateur comportant une buse d'aspiration

Family Cites Families (24)

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Publication number Priority date Publication date Assignee Title
DE19547311A1 (de) * 1995-12-18 1997-06-19 Wessel Werk Gmbh Staubsaugerdüse
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