Floor suction nozzle device, cleaning roller for textile surface cleaning, and suction machine

Abstract

The present invention relates to a floor nozzle device having a textile surface cleaning function. The floor nozzle device includes a floor main body (14) and a sliding bottom plate (41; 177; 202; 206; 248), and the sliding bottom plate contacts a surface (30) to be cleaned during the operation of the floor nozzle device (11; 11'; 11"; 11"'; 111; 111'; 111"; 244). Among them, the sliding bottom plate (41; 177; 202; 206; 248) is made of a composite material, and the composite material includes a matrix material made of at least one polymer and includes fibers made of an electrically conductive material and / or flakes made of an electrically conductive material as fillers.

Description

Technical Field

[0001] The present invention relates to a floor nozzle device having a function of cleaning a textile surface. The floor nozzle device includes a floor main body and a sliding bottom plate, and the sliding bottom plate contacts the surface to be cleaned during the operation of the floor nozzle device.

[0002] The floor nozzle device having a function of cleaning a textile surface is particularly used for cleaning a contaminated and / or dusty textile surface, such as a carpet, a rug, and / or a felt floor. During cleaning, the floor nozzle device can move on the surface to be cleaned, and in particular, can be moved. Dust and / or other dirt particles are received by the floor nozzle device and can be sucked into an air stream.

[0003] The present invention further relates to a cleaning roller for cleaning a textile surface.

[0004] As an alternative or supplement to the floor nozzle device, a cleaning roller is used during cleaning of a textile surface and / or a hard surface, and it preferably forms a part of a suction machine. In the operating mode, the cleaning roller preferably moves in a rotational motion around a rotation axis, wherein the rotation axis is arranged perpendicular or inclined to the main movement direction of the suction machine.

[0005] The present invention further relates to a suction machine. Background Art

[0006] A cleaning head for a surface treatment device is known from WO 2012 / 175932 A1 and GB 2 499 542 A. The cleaning head includes a main body having a suction opening. An air stream flows into the cleaning head through the suction opening. The main body has at least one part that is embedded in the floor and is made of a material that includes a dispersion of carbon nanotubes in a polymer matrix. In addition, bristles for a brush are also known from the literature, and the bristles are made of a composite material that includes a dispersion of carbon nanotubes in a polymer matrix.

[0007] Bristles or filaments for a dust suction brush made of carbon fiber or carbon fiber material are known from US 2010 / 0306956 A1, WO 2010 / 142968 A1, and US 2013 / 0086769 A1.

[0008] An extension tube for a vacuum cleaner or a component of an extension tube made of a resin containing carbon fiber is known from JP 2012-192007 A and JP 2012-249699 A.

[0009] A vacuum cleaner nozzle made of carbon fiber, aramid resin fiber, epoxy resin fiber, and a mixture thereof as substitutes for plastic materials is known from WO 2005 / 035878 A1.

[0010] It is known from US 2003 / 0014832 A1 that there is a vacuum cleaner made of a non-conductive material, such as a polymer or a graphite-based composition.

[0011] It is known from US 6,199,244 B1 that there is a vacuum cleaner in which static charge is applied to a substrate by means of a separate generator to support dust reception.

[0012] It is known from US 2007 / 0136976 A1 that there is a working device, the push bracket of which includes a region containing carbon fiber, through which a conductive connection is established between the working device and the operator of the working device during operation.

[0013] It is known from EP 1 964 501 A2 that there is a sliding bottom plate made of a plate for a vacuum cleaner nozzle.

[0014] It is known from JP 11346967 A that there is an application of using metal fibers on the bottom of a suction device main body. Summary of the Invention

[0015] The object of the present invention is to provide a floor nozzle device of the type described at the beginning, which has a high suction effect on textile surfaces with simple operability and causes a low static charge loading phenomenon.

[0016] This object is solved according to the present invention by a floor nozzle device of the type described at the beginning, in which a sliding bottom plate is provided, the sliding bottom plate being made of a composite material, the composite material including a matrix material composed of at least one polymer and fibers made of a conductive material and / or flakes made of a conductive material as fillers.

[0017] In order to suck dust particles or the like by means of the floor nozzle device, the air flow must be able to flow as directly as possible towards the target. When using the floor nozzle device to clean a textile surface, contact occurs between the sliding bottom plate and the textile material of the textile surface. Here, contact current and static charge loading phenomena may occur. This may cause the deflection of charged dust particles and lead to a reduction in the resulting suction effect.

[0018] In the solution according to the present invention, the sliding bottom plate is made of a composite material, the composite material including a matrix material composed of at least one polymer and fibers made of a conductive material and / or flakes made of a conductive material as fillers. By introducing conductive fillers in the form of fibers and / or flakes, the contact current can be reduced or completely suppressed.

[0019] In particular, an antistatic floor nozzle device is provided.

[0020] Due to the reduced charge loading, better suction results can be achieved with a similar suction power.

[0021] In the context of the present invention, the electrical conductivity is characterized by the resistivity. The resistivity is the reciprocal of the electrical conductivity of the material.

[0022] Preferably, the resistivity of the filler of the composite material is about 100 Ω·mm 2 / m or lower, preferably about 50 Ω·mm 2 / m or lower, particularly preferably about 20 Ω·mm 2 / m or lower. The resistivity relates to the material temperature from 20 °C to 25 °C respectively.

[0023] Preferably, the electrical conductivity is understood as the electrical conductivity of a metal.

[0024] Due to the reduction of the static charge loading phenomenon, the charge discharge to the user of the floor nozzle device can be avoided. Since the risk of "electric shock" brought by the user when touching the floor nozzle device under the condition of charge balance is very effectively reduced, the usability of the floor nozzle device is improved.

[0025] In addition, the sliding base plate made of the composite material has improved stability due to the filler in the form of fibers made of a conductive material and / or sheets made of a conductive material. The floor nozzle device having a sliding base plate made of the composite material preferably has improved mechanical stiffness compared to a floor nozzle device having a sliding base plate that does not use the filler according to the present invention.

[0026] In addition, the service life of the floor nozzle device according to the present invention can be increased because the time until wear occurs on the sliding base plate is extended compared to a floor nozzle device that does not use the sliding base plate according to the present invention.

[0027] In addition, the wear on the sliding base plate is reduced by the filler.

[0028] Since the sliding base plate is made of the composite material according to the present invention, the interaction between the sliding base plate according to the present invention and the textile surface can be optimized as follows, that is, the mobility of the floor nozzle device according to the present invention is improved. This is provided in particular by making the sliding base plate and the textile surface (such as a carpet, rug or felt) have similar or identical surface properties and / or include the same type of material.

[0029] Based on the filler of the sliding base plate, a material that is not very suitable as a material for the floor nozzle device without using the filler can be selected as the matrix material.

[0030] For example, polyvinyl chloride (PVC) can be used as the matrix material of the composite material for the sliding base plate. Polyvinyl chloride is usually charged with static electricity as a material in a floor nozzle device without using the filler according to the present invention.

[0031] In addition, due to the improvement in mechanical stiffness caused by the filler, polyamides, for example, whose mechanical properties are not suitable as materials for floor nozzle devices without using fillers, are also suitable as matrix materials for composite materials for sliding base plates.

[0032] Since various polymers are easy to process in a floor nozzle device due to the application of the filler according to the present invention, existing manufacturing methods and / or manufacturing equipment, such as manufacturing molds, can be used to make a sliding base plate and / or a floor nozzle device. This saves acquisition costs, and in particular, floor nozzle devices can be produced at reduced costs.

[0033] By selecting the materials for the composite material according to the present invention, the floor nozzle device according to the present invention particularly has optimized sliding ability, thereby optimizing the ease of use.

[0034] Advantageously, fibers made of a conductive material and / or flakes made of a conductive material can be embedded as fillers in the matrix material.

[0035] Each fiber made of a conductive material and / or each flake made of a conductive material is particularly completely or partially surrounded by at least one polymer of the matrix material.

[0036] In particular, it is provided that each fiber made of a conductive material and / or each flake made of a conductive material form direct material contacts in a statistical distribution. Thus, on the one hand, a stabilizing structure can be formed by the filler, and on the other hand, the contact electricity formed if necessary can be directly led out via the contact points of adjacent filler particles.

[0037] In particular, the fibers made of a conductive material have a preferred direction in the sliding base plate.

[0038] In a preferred embodiment, the main extension planes of the flakes made of a conductive material are oriented substantially parallel to each other in the matrix material. For example, the main extension planes of the flakes made of a conductive material are arranged substantially parallel to the outer surface of the lower side of the sliding base plate.

[0039] Preferably, the filler is at least approximately evenly distributed in the matrix material. This can provide the advantage that the charging phenomenon over the entire area of the sliding base plate can be avoided or reduced.

[0040] It can be provided that the floor nozzle device or its floor body is made entirely of a composite material comprising fibers made of an electrically conductive material as a filler and / or sheets made of an electrically conductive material.

[0041] Advantageously, the specific surface resistance of the composite material is about 25 Ω or greater, particularly about 250 Ω or greater.

[0042] In particular, the specific surface resistance of the composite material is about 1·10 8 Ω or less, particularly about 1·10 7 Ω or less.

[0043] Advantageously, the fibers made of an electrically conductive material are carbon-based fibers, particularly carbon fibers.

[0044] Supplementally or alternatively, the sheets made of an electrically conductive material are carbon-based sheets, particularly carbon sheets.

[0045] It has been proven advantageous that the composite material comprises a share of fibers made of an electrically conductive material as a filler and / or sheets made of an electrically conductive material of about 5 wt% or more, preferably about 10 wt% or more, particularly about 15 wt% or more. These shares can be sufficient to sufficiently reduce the effect of electrostatic charge build-up and improve the stability of the component compared to components made of materials that do not use the filler according to the invention.

[0046] The weight percentages relate to the total mass of the composite material.

[0047] Furthermore, it has been proven advantageous that the composite material comprises a share of fibers made of an electrically conductive material as a filler and / or sheets made of an electrically conductive material of about 50 wt% or less, preferably about 40 wt% or less, particularly about 30 wt% or less. In these shares, the composite material can also always be liquefied and has sufficiently good flow properties so that it can be processed by polymer shaping methods.

[0048] Preferably, the composite material can be processed by shaping methods. In particular, the composite material can be injection molded, can be extrusion molded, can be calendered, can be rotational molded, can be foam molded, and / or can be blow molded.

[0049] The floor nozzle device and / or the sliding base plate can in particular be manufactured by an injection molding method, an extrusion molding method, a calendering method, a rotational molding method, a foam molding method, and / or a blow molding method.

[0050] On the one hand, the composite material according to the present invention is slidable, so that the operability of the floor nozzle device is more convenient compared to less slidable components, and the floor nozzle device can move on the surface to be cleaned with relatively less force expenditure. On the other hand, the static charge loading effect can be very effectively reduced. In addition, the components made of the composite material according to the present invention have optimized wear resistance.

[0051] In the context of the present invention, "fiber" is understood as an object that is substantially rod-shaped and longitudinally extends in one dimension. The fiber preferably has a greater extension in one dimension than in other dimensions. The fiber is also understood as a curved object or an object with defects or pits. The fiber particularly has an aspect ratio of 3 or greater.

[0052] In the context of the present invention, "flake" is understood as a flat, longitudinally extending object that has a significantly smaller extension in one dimension than in the other two dimensions. The term "flake" particularly also includes arched objects and / or objects with recesses. The term "flake" in the context of the present invention also includes "Flake" and / or "Flitter".

[0053] The fibers made of a conductive material preferably have an average length of about 80 μm or greater, preferably about 100 μm or greater, and particularly about 500 μm or greater.

[0054] The flakes made of a conductive material preferably have an average diameter of about 80 μm or greater, preferably about 100 μm or greater, and particularly about 500 μm or greater.

[0055] The diameter of the flakes made of a conductive material particularly corresponds to the maximum width of the flakes.

[0056] Advantageously, the composite material includes fibers and / or flakes made of solid materials.

[0057] Preferably, the fibers made of a conductive material have an average length of about 4 mm or less, preferably about 3 mm or less, and particularly about 2 mm or less.

[0058] Preferably, the flakes made of a conductive material have an average diameter of about 4 mm or less, preferably about 3 mm or less, and particularly about 2 mm or less.

[0059] The flakes made of a conductive material having the aforementioned dimensions are on the one hand large enough to improve the stability of the component or part and reduce the contact current, and on the other hand, the flakes made of a conductive material having the said dimensions can be introduced into the matrix material during manufacturing so that the composite material can be granulated during manufacturing.

[0060] Preferably, the fiber made of a conductive material has a diameter D of 0.5 mm 90 . D 90 This particularly means that 90% of the fibers have a diameter of 0.5 mm or less. This diameter is measured particularly transversely to the length of the fiber.

[0061] The sheet made of a conductive material preferably has a diameter D of 3 mm 90 . D 90 This particularly means that 90% of the sheets have a diameter of 3 mm or less.

[0062] For example, the filler can still be integrated into the granulation process of the injection molding method even in the case of the maximum length / maximum diameter.

[0063] The average length and / or average diameter are particularly given as the arithmetic mean. It can alternatively be provided that the average length and / or average diameter relate to the median of the length distribution or diameter distribution.

[0064] For example, graphite fibers, graphite sheets, carbon sheets, and / or aluminum foils are used as fillers.

[0065] Particularly preferably, the matrix material comprises one or more of the following polymers or is formed by one or more of the following polymers: polyamide (PA), especially polyamide 6 (PA6) or polyamide 66 (PA66), polycarbonate (PC), acrylonitrile (AC), butadiene, styrene, especially acrylonitrile-butadiene copolymer (ABS), polyolefin, especially polypropylene (PP), polyketone, polymethyl methacrylate (PMMA), polyvinyl chloride (PVC).

[0066] Particularly preferably, an embodiment of the floor suction nozzle device according to the invention as follows, wherein the sliding base plate is made of a composite material, the composite material comprises polyamide 6 and / or polyamide 66 as the matrix material and comprises carbon fibers as the filler, and the share of the filler is 5% to 15% by weight, preferably 10% by weight.

[0067] Preferably, the floor suction nozzle device comprises a suction port, which is arranged on the sliding base plate and / or is formed by the sliding base plate.

[0068] Advantageously, the sliding base plate forms a contact surface leading to the surface to be cleaned and / or is arranged on the lower side of the floor main body or forms the lower side of the floor main body.

[0069] The sliding base plate is particularly configured to be substantially parallel to the enveloping surface of the surface to be cleaned during the operation of the floor suction nozzle device.

[0070] Advantageously, the sliding base plate forms or includes a contact surface during operation of the floor nozzle device, and the floor nozzle device contacts the surface material to be cleaned on the contact surface.

[0071] Preferably, the sliding base plate includes an upper region and a lower region, wherein the lower region follows the upper region, and the contact surface follows and / or is formed by the lower region.

[0072] It can be advantageous if fibers made of an electrically conductive material and / or sheets made of an electrically conductive material as fillers have a higher concentration in the lower region of the sliding base plate and a lower concentration in the upper region of the sliding base plate.

[0073] In a particularly preferred embodiment, the suction opening has a first boundary wall with a first suction edge and a second boundary wall spaced apart from the first boundary wall with a second suction edge. The first and second suction edges are arranged to sink into the textile material of the textile surface. The first boundary wall has a first inner side and a first outer side, and 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.

[0074] Preferably, the floor nozzle device includes a suction head arranged on the floor body. At least one flow path is formed in the suction head, and through the flow path, air can be transported from the environment of the floor nozzle device through the suction head to the first suction edge on the first outer side and / or the second suction edge on the second outer side.

[0075] The first suction edge and / or the second suction edge in particular form part of the sliding base plate.

[0076] The first suction edge and / or the second suction edge in particular has an end that transitions from a sharp edge to a slightly rounded shape with a radius of 2 mm or less towards the lower side.

[0077] In an embodiment, at least one flow path has at least one outlet, which is arranged on the suction head and is assigned to the respective suction edge of the first suction edge or the second suction edge. Thereby, the flow path can generate an increased volume flow rate in the region of the first suction edge and / or the second suction edge, which leads to better suction results and easy mobility of the floor nozzle.

[0078] Advantageously, at least one outlet is oriented along the respective suction edge and in particular has a longitudinal extension direction parallel to the longitudinal extension direction of the respective suction edge. Thereby, the bypass flow can be targeted to the respective suction edge.

[0079] Advantageously for the same reasons, at least one flow path includes at least one opening assigned to the first suction edge in the suction head and / or at least one opening assigned to the second suction edge in the suction head.

[0080] Particularly advantageously, the first bottom wall connected to the first boundary wall has a first region configured as an upwardly inclined plane, and / or the second boundary wall has a second region configured as an upwardly inclined plane, wherein in particular, the first region is coupled to the first suction edge, and / or the second region is coupled to the second suction edge.

[0081] An optimized suction result can thereby be achieved. In particular, this can be achieved in a simple manner by enabling the first suction edge and the second suction edge to penetrate into the textile material of the textile surface. In the case of the configuration as an upwardly inclined plane, in particular, the first region or the second region forms a small acute angle with the envelope surface of the first suction edge and the second suction edge, wherein the acute angle is in particular in the range of approximately 5° to approximately 15°.

[0082] Furthermore advantageously, a thread lifter (Fadenheber) is arranged on the first bottom wall and / or the second bottom wall connected to the boundary wall. An optimized suction result is thereby obtained.

[0083] The first bottom wall and the second bottom wall in particular provide the downward-facing boundary surface of the suction head towards the surface to be cleaned.

[0084] It can be advantageous for the first boundary wall, the second boundary wall, the first bottom wall and / or the second bottom wall to form part of the sliding bottom plate according to the invention.

[0085] Advantageously, at least one opening assigned to the first suction edge and / or at least one opening assigned to the second suction edge has a spacing in the direction of the spacing between the first suction edge and the second suction edge (relative to the edge facing the nearest suction edge) from the assigned suction edge, the spacing being in the range between 0.5 mm and 2.5 mm. It has been shown that an optimized bypass air conveyance to the respective suction edge can thereby be achieved, and thus better suction results can be achieved with easier operability, especially for textile surfaces with dense textile materials.

[0086] The first suction edge and / or the second suction edge preferably form part of a suction channel through which dust or the like is sucked in an air stream. When viewed from below, the suction channel is substantially rectangularly configured. In particular, the suction channel has a curved shape in terms of its lateral cross-section.

[0087] Advantageously, the width of the suction channel from the coupling position to the suction unit up to the textile surface, transverse to the direction of movement of the floor nozzle device, is increased by a factor of two or more.

[0088] More advantageously, the air delivery via at least one flow path in the suction head towards the first suction edge and / or the second suction edge can be adjusted by an adjusting device.

[0089] It can be provided that the adjusting device is configured such that the air delivery through at least one flow path to the first suction edge and / or the second suction edge can be blocked.

[0090] Furthermore advantageously, the floor nozzle device includes a switching device for switching from a textile surface cleaning function to a hard surface cleaning function.

[0091] In an embodiment in which at least one flow path is formed in the suction head so that air can be conveyed through this flow path from the environment of the floor nozzle device through the suction head to the first suction edge on the first outer side and / or the second suction edge on the second outer side, the switching device is particularly coupled to the adjusting device, wherein, in particular when switching to the hard surface cleaning function, at least one flow path is automatically blocked with respect to the air delivery towards the first suction edge and / or the second suction edge.

[0092] The floor nozzle device preferably includes a bend which is arranged in a region facing away from the suction head.

[0093] The bend in particular forms an interface for a connecting element leading to the suction unit of the vacuum cleaner.

[0094] Via the bend, the dust sucked in via the floor nozzle device is preferably led into the suction air flow.

[0095] The bend preferably forms a region in which the direction of the air flow changes, where in the case of a conventional bend, an electrostatic charge loading effect may occur, which is caused by the interaction between the electrostatically charged dust and the material of the bend.

[0096] When the bend is made of a composite material according to the invention, this electrostatic charge loading effect is reduced.

[0097] One or more of the features and advantages mentioned in connection with the composite material of the sliding base plate of the floor nozzle device also apply to the bend made of a composite material according to the invention.

[0098] Advantageously, the bend includes a first section which is at least approximately hollow cylindrical and a second section which is at least approximately hollow cylindrical, the longitudinal central axes of which are arranged at an obtuse angle to each other.

[0099] The obtuse angle is especially in the range of approximately 100° to approximately 170°, preferably in the range of approximately 110° to approximately 160°.

[0100] Furthermore, it has proven to be advantageous that the first section and the second section of the bending element are connected to each other in the hinge part.

[0101] It can be particularly advantageous that the first section of the bending element is swingably connected to the floor body about a swing axis, and / or the second section of the bending element is arranged away from the floor body.

[0102] The swing axis is preferably arranged perpendicular to the shear force direction and perpendicular to the main movement direction of the floor suction nozzle device.

[0103] Preferably, the bending element has a rotary hinge part on the second section for connection to the suction pipe. The bending element is especially rotatably connected to the suction pipe at the end facing away from the first section. The suction pipe can rotate about a rotation axis, which extends parallel to the longitudinal central axis of the second section of the bending element, by means of the rotary hinge part.

[0104] It is advantageous that the suction head is swingably arranged on the floor body. It can thereby be achieved that the first suction edge or the second suction edge sinks deeper into the textile material of the textile surface according to the pushing direction of the floor suction nozzle device, in order to thus achieve a better suction result. The pivoting of the suction head is preferably limited by a stop, which is arranged at the end of the floor body facing away from the suction head.

[0105] Furthermore, it is advantageous that at least one support wheel is arranged on the floor body. This results in simple operability in terms of the movement of the floor suction nozzle on the surface to be cleaned.

[0106] According to a preferred embodiment, the floor suction nozzle device is a floor suction nozzle.

[0107] Preferably, when viewed from below relative to the direction of gravity, the width of the floor suction nozzle is at least 1.5 times the length of the floor suction nozzle. The width of the floor suction nozzle is especially the average width transverse to the main movement direction of the floor suction nozzle. The length is especially the average length parallel to the main movement direction of the floor suction nozzle.

[0108] The main movement direction of the floor suction nozzle or the floor suction nozzle device especially corresponds to the movement direction of the floor suction nozzle or the floor suction nozzle device.

[0109] According to the present invention, there is also provided a cleaning roller for cleaning a textile surface, wherein the cleaning roller includes a plurality of bristles and a bristle receiving portion for receiving the bristles, and wherein the plurality of bristles are held in the bristle receiving portion, in particular in a bundle, and wherein the bristle receiving portion and / or the plurality of bristles are made of a composite material, the composite material including a matrix material composed of at least one polymer and fibers made of an electrically conductive material and / or flakes made of an electrically conductive material as fillers.

[0110] The composite material according to the present invention for making the bristle receiving portion and / or the plurality of bristles of the cleaning roller has the characteristics and advantages mentioned for the composite material for bonding to the sliding bottom plate of the floor nozzle device.

[0111] Preferably, the cleaning roller includes a base body, which is formed at least approximately in a cylindrical shape, and a bristle receiving portion is arranged on its circumferential side surface. The plurality of bristles extend away from the longitudinal central axis of the cleaning roller, in particular at least approximately radially.

[0112] The cleaning roller is particularly rotatably movable in the state of being mounted on the suction machine. The bristles are particularly arranged for sinking into and / or combing the textile material of the textile surface to be cleaned.

[0113] Advantageously, the cleaning roller includes approximately five or more bristles, in particular approximately 100 or more bristles, for example approximately 500 or more bristles.

[0114] Preferably, the cleaning roller includes approximately 100,000 or fewer bristles, in particular approximately 50,000 or fewer bristles, for example approximately 1,000 or fewer bristles.

[0115] It can be provided that the cleaning roller according to the present invention includes both bristles made of the composite material according to the present invention and bristles made of other materials.

[0116] Alternatively, all the bristles of the cleaning roller are made of the composite material according to the present invention.

[0117] In addition, according to the present invention, there is provided a suction machine, which includes the floor nozzle device according to the present invention and / or the cleaning roller according to the present invention.

[0118] It can be advantageous that the suction machine is configured as a vacuum cleaner.

[0119] According to a preferred embodiment, the suction machine is configured as an automatically traveling and automatically steering suction robot.

[0120] According to another preferred embodiment, the suction machine is configured as a sweeper. Description of the Drawings

[0121] The following description of the preferred embodiments in conjunction with the drawings is used to explain the present invention. Among them:

[0122] Figure 1 Shows a schematic lateral partial cross-section of an embodiment of a floor nozzle device according to the invention in the textile surface cleaning function;

[0123] Figure 2 Shows together with Figure 1 the same view, in which, compared to Figure 1 other positions of the adjusting device are shown;

[0124] Figure 3 Shows a variant of a floor nozzle device according to Figure 1 with an alternative embodiment of the adjusting device;

[0125] Figure 4 Shows a view of the suction head of a floor nozzle device according to Figure 1 from below;

[0126] Figure 5 Shows a view of another embodiment of the suction head from below;

[0127] Figure 6 Shows a view of yet another embodiment of the suction head from below;

[0128] Figure 7 Shows a floor nozzle device according to Figure 1 in the hard surface cleaning function;

[0129] Figure 8 Shows another embodiment of a floor nozzle device in the hard surface cleaning function;

[0130] Figure 9 Shows yet another embodiment of a floor nozzle device in the textile surface cleaning function;

[0131] Figure 10 Shows a floor nozzle device according to Figure 9 in the hard surface cleaning function;

[0132] Figure 11 Shows a view of the suction head of a floor nozzle device according to Figure 9 from below;

[0133] Figure 12 Shows a cross-section of the suction head of a floor nozzle device according to Figure 9 in a plane extending perpendicular to the forward travel direction and perpendicular to the envelope surface of the surface to be cleaned;

[0134] Figure 13 Shows another embodiment of a floor nozzle device in the textile surface cleaning function;

[0135] Figure 14 Schematic perspective view showing a cleaning roller according to the present invention;

[0136] Figure 15 Schematic view showing a suction machine according to the present invention in the form of a suction robot from below;

[0137] Figure 16 Graph showing the measurement results of the electrostatic charge loading of test rods of increased weight made of different materials; and

[0138] Figure 17 Another graph showing the measurement results of the moving force in a similar dust containment situation of floor nozzles made of different materials. Detailed description of the invention

[0139] In Figure 1 and 2 The first embodiment of the floor nozzle device according to the present invention, schematically shown and labeled with reference numeral 11, is arranged for connection to a vacuum cleaner having a suction unit 12. The floor nozzle device 11 is herein configured as a floor nozzle 10. The floor nozzle 10 is in particular configured for connection to the suction pipe or suction hose of a vacuum cleaner.

[0140] The floor nozzle 10 has a floor body 14. An interface 16 is arranged on the floor body 14, via which the floor nozzle 10 can be connected to a vacuum cleaner, in particular to establish a fluid-effective connection with the suction unit 12.

[0141] In an embodiment, the interface 16 includes a sleeve 18 into which the pipe of the vacuum cleaner can be inserted.

[0142] It can be provided that on the interface 16, the sleeve 18 can be rotated about a rotation axis 22 via a hinge 20.

[0143] In an embodiment, the floor body 14 has a first part 24 and a second part 26. At least one support wheel 28 is arranged on the floor body 14, and in particular a pair of support wheels 28, via which the floor nozzle 10 can be supported on the surface 30 to be cleaned. At least one support wheel 28 can be arranged on the first part 24, the second part 26, or on both parts 24, 26.

[0144] One or more support wheels 28 can in particular be rotated about a rotation axis 32.

[0145] The first part 24 is swingably arranged on the second part 26 via a hinge 34. The interface 16 is arranged on the second part 26.

[0146] The second part 26 and the interface 16 preferably form a bent part 19. The second part 26 particularly forms a first section of the bent part 19. The interface 16 particularly forms a second section of the bent part 19.

[0147] The corresponding swing axis 36 is particularly parallel to the rotation axis 32.

[0148] In an embodiment, the hinge part 34 is arranged such that the swing axis 36 coincides with or is near the rotation axis 32.

[0149] Via the hinge part 34, different holding heights can be compensated; the different holding heights particularly correspond to different angles, i.e., the suction pipe arranged on the interface 16 is positioned relative to the surface 30 to be cleaned at this angle. The hinge part 34 exactly enables such different holding heights.

[0150] A suction head 38 is arranged on the floor main body 14. The suction head 38 is spaced apart from one or more support wheels 28 and is responsible for supporting the floor nozzle 10 and causing a suction flow to be applied to the surface 30 to be cleaned.

[0151] The suction head 38 is arranged on the first part 24 of the floor main body 14. In an embodiment, the suction head 38 is mounted on the first part 24 of the floor main body 14 via a swing hinge part 40. The swing hinge part 40 defines a swing axis 42, which is parallel to the rotation axis 32 or the swing axis 36.

[0152] The lower side 39 of the suction head relative to the direction of gravity includes a sliding bottom plate 41. The sliding bottom plate 41 is made of a composite material according to the invention. The composite material includes at least one polymer as a matrix material and fibers made of an electrically conductive material and / or flakes made of an electrically conductive material as fillers.

[0153] In particular, the composite material includes at least one polymer and carbon-based fibers such as carbon fibers as fillers. Additionally or alternatively, the composite material particularly includes carbon-based flakes such as carbon flakes as fillers.

[0154] The composite material is preferably an injection-moldable material.

[0155] For example, relative to the total mass of the composite material, the composite material includes a fiber and / or flake made of an electrically conductive material with a weight percentage share of 10 to 20%.

[0156] In an embodiment, at least one polymer of the matrix material comprises one or more of the following polymers or is formed from 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).

[0157] For example, polyamide 6 or polyamide 66 forms the matrix material.

[0158] Preferably, the general length / diameter of the fibers made of a material capable of conducting electricity and / or the sheets made of a material capable of conducting electricity is from about 100 μm to about 3 mm.

[0159] The composite material in particular has a surface resistivity of from about 250 Ω to about 1·10 7 Ω.

[0160] In particular, the filler has a resistivity of 50 Ωmm 2 / m or less. For example, carbon fibers having a resistivity of 16 Ωmm 2 / m form the filler.

[0161] It may be provided that the bending piece 19 is also made of the aforementioned composite material.

[0162] The suction head 38 is supported on the floor main body 14 in the type of a seesaw. This can in particular achieve better cleaning results in the textile surface cleaning function, which is achieved in such a way that when the floor suction nozzle 10 is advanced forward 44 on the surface 30 to be cleaned, the front suction edge (the first suction edge 74, see below) can sink deeper into the textile material of the surface 30 to be cleaned than the rear suction edge, and when moving backward, the rear suction edge (the second suction edge 76, see below) can sink deeper into the textile material than the front suction edge.

[0163] The forward advancement 44 preferably corresponds to the main movement direction of the floor suction nozzle 10.

[0164] The first suction edge 74 and the second suction edge 76 are part of the sliding bottom plate 41 and are made of the composite material according to the invention.

[0165] A suction port 48 is arranged on the suction head 38. The suction port 48 includes a first boundary wall 50 and a second boundary wall 52 opposite to the first boundary wall (see also Figure 4 ).

[0166] The top wall 54 is positioned transversely to the first boundary wall 50 and the second boundary wall 52, and the top wall is connected to the first boundary wall 50 and the second boundary wall 52. When the floor nozzle 10 is supported on the surface 30 to be cleaned via one or more support wheels 28 and the suction head 38, the top wall 54 closes the suction opening 48 upwardly away from the surface 30 to be cleaned.

[0167] An opening 56 is formed in the top wall 54. At least one channel 58 is coupled to the opening 56, and the channel extends through the suction head 38 and the floor body 14 to the interface 16. A suction space 60 is formed between the first boundary wall 50, the second boundary wall 52 and the top wall 54. The suction space 60 is fluidly and effectively connected to the suction unit 12 via the channel 58, so that a suction flow can act in the suction space 60 under the corresponding negative pressure applied by the suction unit 12.

[0168] The first boundary wall 50 has a first inner side 62a that defines the suction space 60. The first boundary wall has a first outer side 62b that faces away from the first inner side 62a. The second boundary wall 52 has a second inner side 64a that defines the suction space 60 and faces the first inner side 62a. The second boundary wall 52 also has a second outer side 64b that faces away from the second inner side 64a.

[0169] The suction space 60 is laterally closed by opposing side walls 66, 68 that are connected not only to the first boundary wall 50 but also to the second boundary wall 52.

[0170] A suction opening 70 of the suction opening 48 is formed between the first boundary wall 50, the second boundary wall 52 and the side walls 66, 68. (When the floor nozzle 10 is located on the surface 30 to be cleaned), through the suction opening 70, the suction space 60 is opened towards the surface 30 to be cleaned. Via the suction opening 70, the surface 30 to be cleaned can be loaded with a suction flow and thus be sucked. The suction opening 48 forms a suction channel via the suction space 60 and the suction opening 70, and the suction channel is open towards the surface 30 to be cleaned.

[0171] In the textile surface cleaning function, the floor nozzle 10 is arranged to suck the textile surface 72 that is the surface 30 to be cleaned. This textile surface 72 is made of a textile material. The corresponding textile surface 72 is, for example, a carpet or a rug.

[0172] On the first boundary wall 50, a first suction edge 74 is formed at the end side in the region of the suction opening 70. On the second boundary wall 52, a second suction edge 76 is formed at the end side in the region of the suction opening 70.

[0173] The first suction edge 74 and the second suction edge 76 are formed, for example, by corresponding thin structures of the first boundary wall 50 or the second boundary wall 52 at their respective end sides.

[0174] In the embodiment, it is provided that, in order to form the respective suction edges 74 or 76, the first boundary wall 50 or the second boundary wall 52 is formed in a wedge shape at the end side.

[0175] The first boundary wall 50 has a greater distance to the interface 16 or the support wheel 28 than the second boundary wall 52. In particular, by pivotally supporting the suction head 38 on the floor body 14, it is ensured that during forward advancement 44, the first suction edge 74 penetrates deeper into the textile material than the second suction edge 76. Correspondingly, the suction head 38 is constructed and supported such that during backward advancement 46, the second suction edge 76 penetrates deeper into the textile material of the textile surface 72 than the first suction edge 74.

[0176] The first suction edge 74 and the second suction edge 76 are constructed such that they are in an effective position during the textile surface cleaning function and sink or can sink into the textile material of the textile surface 72. Thereby, dust can be efficiently sucked from the textile material of the textile surface 72.

[0177] In particular, in the case of the wedge-shaped configuration of the first suction edge 74 or the second suction edge 76, the wedge surface for the first suction edge 74 is oriented in particular such that it lies between the first inner side 62a and the first outer side 62b and tapers from the first inner side 62a towards the first outer side 62b. In particular, the corresponding wedge surface on the second suction edge 76 is formed such that it lies between the second inner side 64a and the second outer side 64b and tapers towards the second outer side 64b.

[0178] The suction head 38 has a first bottom wall 78 towards the end of the surface 30 to be cleaned. The first bottom wall 78 is connected to the first boundary wall 50. The first bottom wall is directly coupled to the first boundary wall and is oriented transversely to the first boundary wall 50.

[0179] The first bottom wall 78 guides from the first boundary wall 50 in the direction of the front end 80 of the suction head 38. The suction head 38 also has a rear end 82 facing away from the front end. The rear end 82 is closer to the support wheel 28 or the interface 16 than the front end 80.

[0180] The first bottom wall 78 has a first region 84 which is oriented at a (small) acute angle 86 with respect to the envelope surface 88 with respect to the first suction edge 74 and the second suction edge 76. The acute angle 86 is oriented such that the first bottom wall 78 tapers towards the front end 80 with respect to the envelope surface 88 within the first region 84.

[0181] Alternatively, it can be provided that a transition region 77 is arranged between the first suction edge 74 and the first region 84. The main extension plane of the transition region 77 is preferably at least approximately at a right angle to the extension main plane of the first boundary wall 50 and / or its first inner side 62a.

[0182] In particular, the main extension plane of the transition region 77 forms an obtuse angle with the main extension plane of the first region 84. For example, the transition region 77 is joined to the first region 84 by a blunt edge or a rounded section.

[0183] In particular, the transition region 77 has a flat portion which is oriented in particular substantially parallel to the envelope surface 88.

[0184] Furthermore, the suction head 38 has a second bottom wall 90. The second bottom wall 90 is connected to and joined to the second boundary wall 52. The second bottom wall extends from the second boundary wall 52 (from the outside 64b) in the direction of the rear end portion 82 of the suction head 38.

[0185] The second bottom wall 90 has a second region 92 which is oriented at an acute angle 94 with respect to the envelope surface 88.

[0186] The second region 92 is configured such that it is retracted from the second boundary wall 52 towards the rear end portion 82 with respect to the envelope surface 88.

[0187] The first region 84 and the second region 92 are configured as uphill slopes by their angular arrangement with respect to the envelope surface 88. The acute angle 86 or 94 is in particular in the range between 5° and 15°.

[0188] 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 part of the sliding base plate 41.

[0189] The first boundary wall 50 and the second boundary wall 52 can be arranged perpendicular to the envelope surface 88 or at an angle thereto. The first and second boundary walls can be oriented parallel to each other or only partially parallel to each other, or they can also be oriented non-parallel to each other.

[0190] In the embodiment, a region 96 is joined to the second region 92 which is oriented, for example, parallel to the envelope surface 88.

[0191] In particular, it is provided that the 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 the textile material of the textile surface 72. Generally, contact between the region 96 and the textile surface 72 is not provided during normal use.

[0192] In an embodiment, thread take-up devices 98a, 98b are respectively arranged on a first region 84 of the first bottom wall 78 and on a second region 92 of the second bottom wall 90.

[0193] (When the suction unit 12 is in operation and is fluidically connected to the suction space 60 effectively), in order to generate a suction effect at the suction opening 70 during the operation of the floor nozzle 10, it is necessary to make the air flows 100, 100' (see Figure 1 ) flow through the textile material of the textile surface 72 past the first suction edge 74 or the second suction edge 76 and into the suction space 60.

[0194] In the floor nozzle 10, (at least one) additional flow path 102, 102' is provided, which is formed in the suction head 38, and via which air can be conveyed to the outer side 62b of the first suction edge 74 or the second outer side 64b of the second suction edge 76 independently of the textile material passing through the textile surface 72.

[0195] For this purpose, (at least one) first channel 104 is formed in the suction head 38, and the first channel is assigned to the first suction edge 74. The first channel 104 has an inlet 106, and air from the environment of the floor nozzle 10 can be coupled into the corresponding flow path 102' (that is, into the channel 104) from this inlet.

[0196] In an embodiment, the inlet 106 is formed by one or more openings formed between the first bottom wall 78 and the front wall 108 of the suction head 38. The front end portion 80 of the suction head 38 is located on the front wall 108.

[0197] Due to the inclined arrangement of the first region 84 of the first bottom wall 78, during the normal operation of the floor nozzle 10, the corresponding inlet 106 for air is spaced apart from the upper side of the textile surface 72.

[0198] In the same way and method, a second channel 110 is formed in the suction head 38 for the flow path 102. The second channel has (at least one) inlet 112, which is located, for example, between the region 96 of the second bottom wall 90 and the rear wall 114 of the suction head 38. The rear end portion 82 of the suction head 38 is located on the rear wall 114.

[0199] Due to the structure of the above-mentioned second bottom wall 90, the inlet 112 is spaced apart from the upper side of the textile surface 72 during normal operation.

[0200] One or more inlets 106 or 112 can also be arranged at other parts of the suction head 38 or the floor main body 14 (with corresponding channel connection parts to the suction head 38) so as to enable air from the environment of the floor nozzle 10 to flow through the suction head 38.

[0201] In an embodiment, 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.

[0202] The first channel 104 has an outlet 116 via which air flowing in the flow path 102' can be conveyed to the first outer side 62b of the first boundary wall 50 of the first suction edge 74. Thereby, an additional air flow 118' leading to the air flow 100' is provided on the suction edge 74 via the flow path 102', which improves the suction result.

[0203] 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. The additional air flow 118 is an additional air flow relative to the air flow 100 through the textile material. Thereby, the suction effect is improved.

[0204] The outlet 116 includes a plurality of openings 122 in the first bottom wall 78 in the vicinity of the first suction edge 74.

[0205] In an embodiment, the openings 122 are configured in a slit shape and form a flow-effective connection between the inner space of the suction head 38 having the first channel 104 and the outer space in the region of the first suction edge 74.

[0206] The openings 122 are arranged in rows, wherein the longitudinal extension direction 124 of the row is in particular at least approximately parallel to the first suction edge 74.

[0207] In a corresponding manner, the outlet 120 is formed by openings 122', wherein in particular spaced-apart slit-shaped openings are arranged in rows, which have a longitudinal extension direction at least approximately parallel to the second suction edge 76 (see Figure 4 ).

[0208] In the embodiment according to Figure 1 and 4 , the first suction edge 74 and the second suction edge 76 are respectively assigned to the outlet 116 having the openings 122 or the outlet 120 having the openings 122'.

[0209] It is also possible ( Figure 5 ) that only the second suction edge 76 is assigned a corresponding outlet 120 having the openings 122' ( Figure 5 ).

[0210] In Figure 5 , the same reference numerals are used for the same elements as in the embodiment according to Figure 1 and 4 .

[0211] It is also possible that only the first suction edge 74 is assigned a corresponding outlet 116 (not shown in the figure).

[0212] It is provided that the openings 122, 122' have a width B in the direction 126 of the spacing between the first suction edge 74 and the second suction edge 76, and this width is in the range between 0.8 mm and 2.5 mm (see Figure 5 ).

[0213] This dimensional specification equally applies to the opening 122 assigned to the first suction edge 74 and the opening 122' assigned to the second suction edge 76.

[0214] Furthermore, it is preferably provided that the spacing D between the openings 122 or 122' in the direction 126 (relative to the edge of the opening 122, 122' closest to the next suction edge 74 or 76) is in the range between 0.5 mm and 2.5 mm.

[0215] Thereby, the openings 122, 122' are respectively adjacent to the corresponding first suction edge 74 or second suction edge 76.

[0216] Each opening 122 or 122' has a length L in the transverse direction 128 relative to the spacing direction 126, and this length follows the corresponding suction edges 74 and 76. In the embodiment, the openings 122, 122' have a length L of approximately the order of 15 mm.

[0217] It is provided that on all the openings 122 or 122' of the outlet 116 or 120, the total length of the outlet 116 or 120 as the sum of all the lengths L is at least 30% of the length of the corresponding first suction edge 74 or second suction edge 76, and preferably at least 70%.

[0218] It is possible that the suction edge 74 or 76 has a straight extension ( Figure 4 , 5 ).

[0219] It is possible that the first suction edge and / or the second suction edge 130 ( Figure 6 ) has a non-straight configuration, and for example has an intermediate region 132, and curved regions 134a, 134b are joined on both sides of the intermediate region.

[0220] The corresponding outlet 136 with the opening 138 follows the course of this suction edge including the bend (in the embodiment of the second suction edge 130).

[0221] The length of the corresponding opening 138 is then the length along the following course line, that is, this course line is parallel to the course line of the corresponding second suction edge 130.

[0222] The dimensions mentioned here also apply to the width B and the spacing D. In addition, the total length of the outlet 136, which is the length of all the openings 138 along the alignment line of the second suction edge 130, is at least 30%, preferably at least 70%, of the corresponding length of the second suction edge 130 along this alignment line.

[0223] In the illustrated embodiment in which the openings 122, 122', 138 are arranged in rows, there are tabs 140 between adjacent openings, which tabs are in particular airtight. This achieves a high stability.

[0224] For example, it is possible that the respective outlets 116, 120, 136 are also formed by a single opening.

[0225] It is possible that the respective openings are also formed, for example, by a plurality of round or quadrilateral holes.

[0226] In the illustrated embodiment, the slit-shaped openings 122, 122' and 138 are rounded at their corners.

[0227] Via the outlets 116, 120, 136 in the respective bottom walls 78 or 90, a bypass air flow can be fed to the respective suction edges 74, 76, which bypass air flow originates from the environment of the floor nozzle 10 and has at least partially flowed through the suction head 38.

[0228] The negative pressure loading of the suction space 60 via the suction unit 12 drives the bypass air flow here.

[0229] It can be provided that the outlets 116, 120, 136 are permanently present.

[0230] In the embodiment ( Figures 1 to 3 ) there is provided an adjusting device 142 via which the air flow (bypass air flow) 118, 118' through the respective outlets 116, 120 can be changed.

[0231] The adjusting device 142 includes adjusting elements 144 assigned to the respective outlets 116, 120, which adjusting elements can act on the respective outlets 116, 120, 136 and via which the opening cross-section of the outlets 116, 120, 136 can be changed.

[0232] In the embodiment, the adjusting element 144 is constructed such that a "closed outlet" position 116 or 120 (with the openings 122, 122' closed) and an "open outlet" position are provided.

[0233] To this end, in the embodiment, a slider 146 of the adjusting device 142 is movably guided in a fixable manner on the outside of the suction opening 48 having boundary walls 50, 52 within the suction head 38. The adjusting element 144 is the corresponding wall of the slider 146.

[0234] In the open position of the fixable slider 146 ( Figure 1 ), the walls of the slider 146 and thus the adjusting elements 144 of the respective outlets 116, 120, 136 are moved away, so that the additional air flows 118, 118' can also flow to the first suction edge 74 and the second suction edge 76.

[0235] In Figure 2 the position 148 of the slider 146 shown, the adjusting element 144 covers the respective outlets 116, 120. Thereby, no additional air flow 118 or 118' is conveyed to the respective suction edge 76 or 74. (This is because there is no negative pressure in the flow paths 102, 102' at this time, so usually no air is sucked into the channels 104 or 110 either.)

[0236] In particular, it is provided here that the adjusting device 142 can be operated by the corresponding operating element 150 shown in Figure 2 . The user can thereby adjust whether the additional air flow 118 or 118' is effective or not, that is, whether the outlets 116, 120 are open.

[0237] As described above, when only a single suction edge 74 or 76 is assigned an outlet (see Figure 5 ), an adjusting device can also be provided.

[0238] In Figure 3 the embodiment of the floor nozzle device 11' configured as a floor nozzle 10' shown, there is a variant of the adjusting device 152.

[0239] In the variant of the adjusting device 152 (see Figure 3 ), where the same reference numerals are used for the same elements as in the floor nozzle 10 according to Figure 1 and 2 , the adjusting device 152 has an adjusting element 154 which is arranged to sink into the respective openings 122, 122.

[0240] The adjusting element 144 is arranged to cover the openings 122, 122', wherein the covering is carried out in particular within the interior space of the suction head 38 between the respective first boundary wall 50 and the first bottom wall 78 or the second boundary wall 52 and the second bottom wall 90.

[0241] Since the movable adjusting element 154 sinks into the openings 122, 122', in principle the opening areas of these openings are variable.

[0242] In the embodiment, it is provided that the adjusting member 154 is constructed such that different opening areas of the respective openings 122, 122' are obtained according to the depth to which it sinks into the corresponding openings 122, 122', and this opening area lies between zero (including zero) and fully open when not sunk.

[0243] The adjusting device 142 can be used to adjust the air flows 118, 118' additionally present on the suction edges 74, 76 between "present" and "absent" (zero air flow). In the adjusting device 152 with the described variant, the additional air flow in the intermediate region can be changed according to the sinking depth of the adjusting element 154 into the assigned openings 122, 122'.

[0244] Here, it is possible for the operator to perform the adjustment via the operating element 150.

[0245] In principle, it is also possible to perform a fixed adjustment at the factory during the manufacture of the respective floor nozzle 10.

[0246] The different types of textile materials, such as the type of carpet, can be matched by means of the adjusting device 142 or 152. For example, in highly breathable carpets, no additional air flows 118, 118' are required. Better suction can be achieved in such materials with the outlets 116 or 120 closed.

[0247] In dense textile materials, a larger volume flow can be achieved when the outlets 116 and 120 on the first suction edge 74 or the second suction edge 76 are open or partially open. This results in greater transport force and better suction results. In addition, when the outlets 116 or 120 are open, the floor nozzle 10 is less attracted to the textile surface 72. Therefore, the additional air flows 118, 118' result in a reduction in the moving force of the floor nozzle 10 on the textile surface 72 (when advancing forward 44 or backward 46). This results in more convenient operability.

[0248] The floor nozzle 10 has a width b2 on the suction head 38 ( Figure 5 ). The suction opening 70 extends in the same direction over a width b1. It is provided that the width b1 at least approximately corresponds to the width b2, and preferably here, the width b1 is at least 90% of the width b2, and preferably at least 95% of the width b2.

[0249] The floor nozzle 10 can be constructed such that it only has a textile surface cleaning function. Thus, the first suction edge 74 and the second suction edge 76 are constantly in an effective position.

[0250] In an advantageous embodiment, the floor nozzle devices 11'', 11''' configured as floor nozzles 10'', 10''' also each have a hard surface cleaning function.

[0251] For this purpose, a floor abutment device 156 is arranged on the suction head (see, for example, Figure 2 , which is in an ineffective position during the textile surface cleaning function).

[0252] The floor abutment device 156 includes, for example, a brush lip 157 (or a rubber lip), which is in an effective position during the hard surface cleaning function and which then rests on the surface 30 to be cleaned. (See Figure 7 and 8 ). Thus, in this support, the first suction edge 74 and the second suction edge 76 are in an ineffective position. This will be explained in more detail in connection with the embodiments according to Figure 7 and 8 .

[0253] Figure 7 shows a floor nozzle device 11'' configured as a floor nozzle 10'', in which the floor abutment device 156 is in an effective position. Thus, the floor nozzle 10'' has a hard surface cleaning function. In this position, the hard surface 158, which is the surface 30 to be cleaned, can be vacuumed via the floor nozzle 10''.

[0254] The floor abutment device 156 defines an envelope surface 160 on which the floor abutment device 156 stands on the hard surface 158. The first suction edge 74 and the second suction edge 76 are spaced apart from this envelope surface 160 in the height direction, so that the suction edges are precisely ineffective and do not contact the surface 30 to be cleaned.

[0255] A switching device 162 is provided, via which the switching between the textile surface cleaning function and the hard surface cleaning function of the floor nozzle 10'' can be carried out.

[0256] In the textile surface cleaning function, the floor abutment device 156 is in an ineffective position and is thus moved into the suction head 38 so as not to affect the surface 30 to be cleaned ( Figure 1 ). In the textile surface cleaning function, the first suction edge 74 and the second suction edge 76 are in an effective position, and these suction edges can penetrate into the textile material of the surface 30 to be cleaned.

[0257] In the hard surface cleaning function, the floor abutment device 156 is positioned on the suction head 38 via the switching device 162 such that the enveloping surface 160 faces away from the first suction edge 74 and the second suction edge 76. Thereby, the first suction edge 74 and the second suction edge 76 are in a non-effective position, and the floor abutment device 156 is in an effective position.

[0258] The floor abutment device 156 in the hard surface cleaning function ensures a fluid-effective (approximate) seal of the space 164 between the floor abutment device 156 and the hard surface 158, wherein the suction opening 48 and the suction opening 70 are positioned within this space.

[0259] In the embodiment of the floor nozzle device 11”’ configured as a floor nozzle 10”’ ( Figure 8 ), the switching device 162 is coupled to the regulating device 166 for the additional air flows 118, 118’.

[0260] Here, the regulating device 166 has a regulating element 168 which is coupled to the switching device 162 and serves to close the outlets 116, 120 having the openings 122, 122’.

[0261] When the floor abutment device 156 is in a non-effective position by a corresponding adjustment on the switching device 162, the regulating element 168 is positioned such that it releases the outlets 116, 120 and thus the additional air flows 118, 118’ can be loaded onto the first suction edge 74 and the second suction edge 76 on the respective outer sides of the inlet wall and the boundary wall.

[0262] When the floor abutment device 156 is in its effective position and is switched over thereby via the switching device 162, the regulating member 168 is positioned such that it closes the outlets 116, 120 ( Figure 8 ). Thereby, no excess air is drawn in via the outlets 116, 120 during the hard surface cleaning function.

[0263] In this embodiment, in a variant, the regulating element 168 is configured as a slide or arranged on a slide 170 which is guided in a movable manner within the suction head 38. The movement and positioning of the slide 170 are caused via the switching device 162 and result in the closure of the outlets 116, 120 in the effective position of the floor abutment device 156 as described and the opening of the outlets 116, 120 in the effective position of the suction edges 74, 76 (in the non-effective position of the floor abutment device 156).

[0264] According to the present invention, the floor nozzle 10 for the textile surface cleaning function has additional flow paths 102, 102' for each of its suction edges 74, 76 or for only one of the suction edges 74 or 76, and air can be provided from the environment on the outside of the suction ports 48 of the respective suction edges 74, 76 via the flow paths. Thus, better suction results are obtained especially in the case of dense textile materials. A greater conveying force is obtained due to the greater volume flow at the suction port 48 to carry away dust particles.

[0265] In addition, the floor nozzle is less attracted to the textile material, and the moving force required to move the floor nozzle on the textile material is reduced.

[0266] In a variant of the embodiment, the outlet 116 or 120 is closable or adjustable in terms of its cross-section in order to enable matching with the textile material.

[0267] In addition, it can be provided that the coupling of the change in the opening width (including closability) with the switching device can be achieved between the textile surface cleaning function and the hard surface cleaning function.

[0268] In the solution according to the present invention, one or more openings 122, 122' are arranged on the respective bottom walls 78 or 90, close to the respective suction edges 74 or 76, and these openings are assigned to the respective outer sides 62b, 64b of the respective boundary walls 50, 52 on which the suction edges 74 or 76 are formed. The ambient air flowing in via the respective additional air flows 118, 118' is throttled less than the air flow 10, 100' flowing through the textile material to the suction opening 70.

[0269] The suction air in the additional air flows 118, 118' has a shorter path through the textile material and is less throttled. Thus, a large volume flow exists at the respective suction edges 74, 76.

[0270] When the floor nozzle 10 is in operation, the floor nozzle 10 is connected to the suction unit 12. In particular, the operator moves the floor nozzle 10 on the surface 30 to be cleaned via the suction pipe.

[0271] In Figure 9 Another embodiment of the floor nozzle device 111 according to the present invention is schematically shown. The floor nozzle device 111 is configured as a floor nozzle 101 according to this embodiment. According to Figure 9 The main difference between the floor nozzle device 111 of the embodiment and Figures 1 to 3 the embodiment is that there is no bypass channel and no inflow of ambient air as the additional air flow 118, 118'. The floor nozzle 101 does not include an adjustment device 142.

[0272] When a corresponding negative pressure load is generated in the suction space 172 by the suction unit 12, the air flows 174, 174' flow from the edge region of the substantially elongate trough-shaped suction head 176 through the textile material of the textile surface 178 and pass by the first suction edge 180 or the second suction edge 182 and flow into the suction space 172.

[0273] The first suction edge 180 and the second suction edge 182 respectively form part of the sliding bottom plate 177. The first boundary wall 179 and the second boundary wall 181 preferably form part of the sliding bottom plate 177.

[0274] No additional flow path is provided.

[0275] In addition, Figure 9 the embodiment shown in Figure 1 is consistent with the embodiment shown in Figure 1 so reference is made in this regard to the description of the embodiment of

[0276] In Figure 10 a further embodiment of the floor nozzle device 111' configured as a floor nozzle 101' shown in Figure 9 is substantially different from the embodiment shown in

[0277] in that a floor contact device 184 is shown in an effective position.

[0278] In the effective position of the floor contact device 184, its brush lips 186, 186' are in direct contact with the surface 30 to be cleaned. Compared with the non-effective position in the textile surface cleaning function, the suction head 188 is raised by means of the floor contact device 184 and is supported on the brush lips 186, 186' by means of a transfer wall 192 extending substantially parallel to the envelope surface 190.

[0279] Facing the surface 30 to be cleaned, a space 200 is formed between the lower side 198 of the sliding bottom plate 202, the suction space 204 and the surface 30 to be cleaned, and this space is sealed by the brush lips 186, 186'.

[0280] Dust or the like is sucked in this space 200 by negative pressure loading.

[0281] In addition, Figure 10 the embodiment shown in Figure 9 corresponds to the embodiment shown in Figure 9 so reference is made in this regard to the description of

[0282] As can be seen especially when observing the suction head 176 from below (see Figure 11 ), the floor nozzle device 111 preferably has a suction channel 175 with a substantially rectangular cross-section.

[0283] This cross-section is taken especially in a plane extending parallel to the textile surface 178.

[0284] The suction channel 175 is preferably configured to be laterally closed.

[0285] The suction channel 175 especially has a curved shape.

[0286] As can be seen especially from Figure 12 : The width of the cross-section decreases towards the side edges of the floor nozzle 101. This cross-section is taken perpendicular to the envelope surface of the textile surface 178 extending through the center of the suction channel 175.

[0287] In Figure 13 : The main difference between the embodiment of the floor nozzle device 111” configured as a floor nozzle 101” and the embodiment of the floor nozzle device 111 shown in Figure 9 is that the sliding base plate 206 does not extend over the entire lower side 207 of the suction head 208.

[0288] The sliding base plate 206 made of a composite material is here configured in two parts and is respectively arranged in the region of the first suction edge 210 or in the region of the second suction edge 212. The sliding base plate 206 extends substantially over the region where material contact with the textile material of the surface 30 to be cleaned occurs during the textile surface cleaning function. Thereby, the charge loading effect can be reduced and the mechanical stiffness can be optimized. However, most of the floor nozzle device 111” can also be made of a plastic material different from the composite material. For example, for regions different from the sliding base plate 206, a plastic material without fillers or a plastic material different from the composite material can be used.

[0289] In addition, Figure 13 : The embodiment of the floor nozzle device 111” shown in Figure 9 is consistent with the embodiment shown in Figure 9 , and reference is hereby made to the description in

[0290] In Figure 14 : An embodiment of a cleaning roller 220 according to the invention is schematically shown. The cleaning roller 220 is especially suitable for use in a floor nozzle device according to the invention or in a suction machine according to the invention. For example, the cleaning roller 220 can be mounted and used in a floor sweeper or in a suction robot that moves automatically and steers automatically.

[0291] The cleaning roller 220 preferably has a base body 222 that is at least approximately cylindrical in shape. The cleaning roller 220 furthermore particularly includes a shaft 224, which is arranged on opposite end sides of the base body 222 and is used for rotatably fixing on a (not shown) cleaning roller receiving part. The shaft 224 is arranged parallel to the longitudinal central axis 226. The longitudinal central axis 226 is parallel to the rotation axis about which the cleaning roller 220 is rotatably supported.

[0292] On the circumferential side surface 228 of the base body 222, there is arranged a bristle receiving part 230 for receiving a plurality of bristles 232.

[0293] The bristles 232 are particularly substantially cylindrical in shape, for example cylindrical. Each bristle 232 preferably has a diameter perpendicular to its main extension direction of approximately 0.3 mm to 2.0 mm, preferably 0.5 mm to 1.5 mm.

[0294] Preferably, the base body 222 is formed with the bristle receiving part 230.

[0295] In an embodiment, the bristle receiving part 230 includes openings 234, in particular openings 234 arranged in a parallel row within protrusions 236 arranged on the circumferential side surface 228 of the base body 222.

[0296] The protrusions 236 are preferably rib-shaped and extend along the circumferential side surface 228 parallel to the longitudinal central axis 226. The bristles 232 are received within the openings 234 and are arranged in bundles 235.

[0297] The bundle 235 preferably has a diameter of approximately 5 mm or greater.

[0298] The bristles 232 extend radially away from the longitudinal central axis 226 in bundles 235.

[0299] The bundles 235 are particularly arranged in rows, and these rows are arranged parallel to each other.

[0300] In the installed state of the cleaning roller 220, during the rotational operation of the cleaning roller 220, dust is lifted by means of the bristles 232 and is thrown into an adjacent suction space, where the dust is extracted.

[0301] Preferably, the length of the bristles 232 is approximately 5 cm or greater, in particular approximately 15 cm or less.

[0302] The total diameter of the cleaning roller 220 is preferably approximately 10 cm or greater to approximately 40 cm, preferably approximately 25 cm or greater.

[0303] Preferably, the total diameter of the cleaning roller 220 is approximately 40 cm or less, in particular approximately 35 cm or less.

[0304] The bristles 232 are preferably arranged in bundles 235 which extend radially away from the longitudinal central axis 226.

[0305] The bundles 235 preferably form rows of bundles 235 which are arranged parallel to the longitudinal central axis 226 within the projections 236 of the bristle receiving part 230.

[0306] One row includes, for example, 50 to 60 bundles 235.

[0307] As a supplement or alternative, it can be provided that the bristles 232 or the bristles 232 in bundles 235 are arranged helically or in a V - shape around the base body 222.

[0308] According to the invention, the bristles 232 are made of a composite material comprising a polymer and carbon - based fibers and / or carbon - based flakes as fillers.

[0309] Polyamide, in particular polyamide 6 or polyamide 66, is preferably suitable as the matrix material. For example, relative to the total mass of the composite material, the composite material includes a carbon fiber fraction of approximately 13% by weight.

[0310] In addition, one or more of the features and advantages mentioned for the composite material of the cleaning roller 220 also apply to the composite material of the floor suction nozzle device 11.

[0311] Figure 15 An embodiment of the suction machine 242 of a suction robot 240 configured for automatic steering and automatic travel is shown from below. The suction robot 240 includes a floor suction nozzle device 244.

[0312] In the embodiment, the suction robot 240 forms a suction head 246 which includes at least approximately a frustum - shaped region that forms an upper side facing away from the surface 30 to be cleaned during the operation of the suction robot 240.

[0313] The at least approximately frustum - shaped region of the suction head 246 is, for example, formed in a truncated manner and / or is closed at its edge by a lower side 241 facing the surface 30 to be cleaned. The lower side 241 is arranged below the suction head 246 with respect to the direction of gravity and is formed substantially flat.

[0314] During the operation of the suction robot 240, the region of the lower side 241 preferably has direct material contact with the surface 30 to be cleaned. As a supplement or alternative, during the operation of the suction robot 240, the region of the lower side 241 is particularly at a small distance from the surface to be cleaned, such that an air flow can be generated between the lower side 241 and the surface 30 to be cleaned, by means of which dust and the like can be sucked.

[0315] The lower side 241 preferably includes a sliding bottom plate 248 which forms the lower side 241 in the embodiment. Alternatively, it may be provided that the sliding bottom plate 248 partially forms the lower side 241 and the other regions have other characteristics.

[0316] According to the present invention, the sliding bottom plate 248 is made of a composite material. The composite material includes at least one polymer as a matrix material and carbon-based fibers, in particular carbon fibers, and / or carbon-based flakes, in particular carbon flakes, as fillers.

[0317] For example, the sliding bottom plate 248 includes polyamide 6 as the matrix material, in which about 10% to about 12% by weight of carbon fibers are dispersed. The length of the carbon fibers in the original state is preferably about 1 mm to about 4 mm.

[0318] In the embodiment, the sliding bottom plate 248 is made by an injection molding method.

[0319] In a preferred embodiment, all regions of the lower side 241 that are in direct contact with the surface 30 to be cleaned during the operation of the suction robot 240 are formed by the sliding bottom plate 248 made of the composite material according to the present invention.

[0320] The sliding bottom plate 248 includes an opening 250 which forms a suction port 252. Dust can be sucked via the suction port 252 by means of negative pressure loading.

[0321] In addition, the composite material has one or more of the above-mentioned features and advantages.

[0322] In the embodiment, the suction port 252 is substantially rectangular in a cross-section taken parallel to the lower side 241. The suction port 252 has a main extension direction which is oriented substantially perpendicular to the main movement direction 254 of the suction robot 240.

[0323] It may be provided that a cleaning roller 256 according to the present invention is arranged in the edge region of the suction port 252, and the bristle receiving part and / or the bristles of the cleaning roller are made of the composite material according to the present invention. The longitudinal central axis of the cleaning roller 256 is substantially perpendicular to the main movement direction 254 of the suction robot 240.

[0324] In the embodiment, the bristles of the cleaning roller 256 are arranged in bundles, and these bundles are arranged spirally around the longitudinal central axis of the cleaning roller 256.

[0325] In addition, the suction port 252 is preferably constructed as in the embodiment described in Figures 1 to 13 the described embodiment.

[0326] The suction robot 240 includes wheels 258 on its lower side 241 (e.g., within the equatorial region of the lower side 241), preferably two wheels 258, 258', for moving the suction robot 240 on the surface 30 to be cleaned.

[0327] In an embodiment, the wheels 258, 258' are rotatably supported about a rotational axis arranged perpendicular to the main movement direction 254 of the suction robot 240. Alternatively, it can be provided that the rotational axes of the wheels 258, 258' form an obtuse angle with each other, and / or at the intersection of the rotational axes of the two wheels 258, 258' the rotational axes respectively enclose an acute angle with the main movement direction 254 of the suction robot 240.

[0328] By means of the wheels 258, 258', the suction robot 240 can be moved on the surface 30 to be cleaned.

[0329] The suction robot 240 includes a control device 260 for controlling the movement and suction power of the suction robot 240. The control device 260 preferably includes one or more sensor devices.

[0330] Figure 16 A graph showing the recorded measurement results is presented. The charging voltage V in volts [V] of test rods made of different materials was measured. Here, the following test rod ends were used, which have a smooth surface by potting and have a width of approximately 20 mm, a thickness of approximately 4 mm, and a length of approximately 35 mm. According to EN 60312, the test rod was pressed onto the test carpet with a force of 30 N and moved back and forth 10 times over a sliding length of approximately 20 cm at an average speed of 0.3 m / s.

[0331] In order to Figure 16 obtain the frictional force, test rods according to DIN EN ISO 527-2 type 1A with a length of approximately 170 mm, a width of approximately 20 mm, a thickness of approximately 4 mm, and a total weight of 800 g were pressed onto the test carpet according to EN60312, and the traction force F1 in newtons [N] was measured, which was formed on the test rod immediately lifted when being pulled at a speed of 0.5 m / s over a length of 0.5 m. Observed along the pulling direction, the weight was applied within the rear region of the test rod.

[0332] Test rods made of the following materials were used:

[0333] - Polyamide 6 (PA6),

[0334] - Polycarbonate / acrylonitrile-butadiene-styrene copolymer (PC / ABS) - (85% polycarbonate and 15% ABS),

[0335] - Polyamide 6 (PA6CF15) with a carbon fiber share of 15% by weight relative to the total mass of the composite material,

[0336] - Polyamide 6 (PA6GF15) with a glass fiber share of 15% by weight, and

[0337] - Polymethyl methacrylate (PMMA).

[0338] Additionally, the force F1 to be applied for traction on the test carpet is measured and recorded in Newtons [N].

[0339] At Figure 16 The measurement results shown clearly demonstrate that among the tested test rods, only the test rods made of the composite material (PA6CF15) according to the present invention do not have measurable electrostatic charges.

[0340] Regarding the force to be applied for pulling the weighted test rods on the test carpet, all the tested test rods showed similar results of approximately 15 N. Compared with the test rods made of the composite material PA6CF15 according to the present invention, the minimum force F1 to be applied for the test rods made of PC / ABS and PMMA is smaller, which is not convincing because there is worse dust reception due to high electrostatic charges, and for similar dust reception, suction must be increased, thus significantly increasing the required moving force (see Figure 17 ).

[0341] Figure 17 A chart is shown which shows the measurement results of the moving force F2 to be applied in the case of testing floor nozzles of different materials.

[0342] Here, the moving force to be applied to the floor nozzle is measured according to standard EN60312 in the case of a pre - adjusted similar dust reception dpu c (exceeding 80%) in percentage.

[0343] Floor nozzles made of the following materials are tested:

[0344] - Polyamide 6 (PA6CF15) with a carbon material fiber share of 15% by weight,

[0345] - Polyamide 6 (PA6),

[0346] - Polycarbonate / acrylonitrile - butadiene - styrene copolymer (PC / ABS),

[0347] - Polyamide 6 (PA6GF15) with a glass fiber share of 15% by weight, and

[0348] - Polycarbonate / acrylonitrile - butadiene - styrene copolymer (PC / ABS), with a PA share of 50% and an ABS share of 50%.

[0349] As can be clearly seen from the Figure 17 chart shown, the floor nozzle made of the composite material PA6CF15 according to the present invention exhibits the best sliding performance among the tested raw materials.

[0350] Regarding dust reception, the floor nozzle made of the composite material according to the present invention has the best sliding performance.

[0351] Especially in the case of high dust reception above 80%, in the case of the floor nozzle made of the composite material PA6CF15 according to the present invention, only a low moving force of about 45 N needs to be applied in order to move the floor nozzle on the test carpet. As can be seen from Figure 16 and 17 this is due to the improved sliding performance and the low static charge loading effect.

[0352] List of reference numerals

[0353] 10 Floor nozzle

[0354] 10’ Floor nozzle

[0355] 10” Floor nozzle

[0356] 10”’ Floor nozzle

[0357] 11 Floor nozzle device

[0358] 11’ Floor nozzle device

[0359] 11” Floor nozzle device

[0360] 11”’ Floor nozzle device

[0361] 12 Suction unit

[0362] 14 Floor body

[0363] 16 Interface

[0364] 18 Sleeve

[0365] 19 Bending part

[0366] 20 Hinge part

[0367] 22 Axis of rotation

[0368] 24 First part

[0369] 26 Second part

[0370] 28 Support wheel

[0371] 30 Surface to be cleaned

[0372] 32 Axis of rotation

[0373] 34 Hinge part

[0374] 36 Axis of oscillation

[0375] 38 Suction head

[0376] 39 Lower side

[0377] 40 Oscillation hinge part

[0378] 41 Sliding base plate

[0379] 42 Axis of oscillation

[0380] 44 Forward advancement

[0381] 46 Backward advancement

[0382] 48 Suction opening

[0383] 50 First boundary wall

[0384] 52 Second boundary wall

[0385] 54 Pusher wall

[0386] 56 Opening

[0387] 58 Channel

[0388] 60 Suction space

[0389] 62a First inner side

[0390] 62b First outer side

[0391] 64a Second inner side

[0392] 64b Second outer side

[0393] 66 Side wall

[0394] 68 Side wall

[0395] 70 Suction opening

[0396] 72 Textile surface

[0397] 74 First suction edge

[0398] 76 Second suction edge

[0399] 77 Transition region

[0400] 78 First bottom wall

[0401] 80 Front end portion

[0402] 82 Rear end portion

[0403] 84 First region

[0404] 86 Acute angle

[0405] 88 Envelope surface

[0406] 90 Second bottom wall

[0407] 92 Second region

[0408] 94 Acute angle

[0409] 96 Region

[0410] 98a Thread take-up

[0411] 98b Thread take-up

[0412] 100 Air flow

[0413] 100’ Air flow

[0414] 101 Floor nozzle

[0415] 101’ Floor nozzle

[0416] 101” Floor nozzle

[0417] 102 Flow path

[0418] 102’ Flow path

[0419] 104 First channel

[0420] 106 Inlet

[0421] 108 Front wall

[0422] 110 Second channel

[0423] 111 Floor nozzle device

[0424] 111’ Floor nozzle device

[0425] 111” Floor nozzle device

[0426] 112 Inlet

[0427] 114 Rear wall

[0428] 116 Outlet

[0429] 118 Additional air flow

[0430] 118’ Additional air flow

[0431] 120 Outlet

[0432] 122 Opening

[0433] 122’ Opening

[0434] 124 Longitudinal extension direction

[0435] 126 Spacing direction

[0436] 128 Transverse direction

[0437] 130 Second suction edge

[0438] 132 Intermediate region

[0439] 134a Curved region

[0440] 134b Curved region

[0441] 136 Outlet

[0442] 138 Opening

[0443] 140 Tab

[0444] 142 Adjustment device

[0445] 144 Adjustment element

[0446] 146 Slide block

[0447] 148 Position

[0448] 150 Operating element

[0449] 152 Adjustment device

[0450] 154 Adjustment element

[0451] 156 Floor contact device

[0452] 157 Brush lip

[0453] 158 Hard surface

[0454] 160 Enveloping surface

[0455] 162 Switching device

[0456] 164 Space

[0457] 166 Adjustment device

[0458] 168 Adjustment element

[0459] 170 Slide block

[0460] 172 Suction space

[0461] 174 Air flow

[0462] 174’ Air flow

[0463] 175 Suction channel

[0464] 176 Suction head

[0465] 177 Sliding base plate

[0466] 178 Textile surface

[0467] 179 First boundary wall

[0468] 180 First suction edge

[0469] 181 Second boundary wall

[0470] 182 Second suction edge

[0471] 184 Floor contact device

[0472] 186 Brush lip

[0473] 186’ Brush lip

[0474] 188 Suction head

[0475] 190 Enveloping surface

[0476] 192 Transfer wall

[0477] 194 First suction edge

[0478] 196 Second suction edge

[0479] 198 Lower side

[0480] 200 Space

[0481] 202 Sliding base plate

[0482] 204 Suction space

[0483] 206 Sliding base plate

[0484] 207 Lower side

[0485] 208 Suction head

[0486] 210 First suction edge

[0487] 212 Second suction edge

[0488] 220 Cleaning roller

[0489] 222 Substrate

[0490] 224 Shaft

[0491] 226 Longitudinal central axis

[0492] 228 Peripheral side surface

[0493] 230 Bristle accommodation part

[0494] 232 Bristles

[0495] 234 Opening

[0496] 235 Bundle

[0497] 236 Protrusion

[0498] 240 Suction robot

[0499] 241 Lower side

[0500] 242 Suction machine

[0501] 244 Floor suction nozzle device

[0502] 246 Suction head

[0503] 248 Sliding bottom plate

[0504] 250 Opening

[0505] 252 Suction port

[0506] 254 Main movement direction

[0507] 256 Cleaning roller

[0508] 258 Wheel

[0509] 258’ Wheel

[0510] 260 Control device

Claims

1. A floor suction nozzle device having a textile surface cleaning function, the floor suction nozzle device comprising a floor main body (14), a sliding bottom plate (41; 177; 202; 206; 248) and a suction port (48; 252), the sliding bottom plate being in contact with the surface (30) to be cleaned during operation of the floor suction nozzle device (11; 11'; 11"; 11"'; 111; 111'; 111"; 244), the suction port being arranged on the sliding bottom plate (41; 177; 202; 206; 248) and / or formed by the sliding bottom plate (41; 177; 202; 206; 248), characterized in that, The sliding base plate (41; 177; 202; 206; 248) is made of a composite material, which includes a matrix material composed of at least one polymer and fibers made of a conductive material and / or flakes made of a conductive material as fillers. The suction opening (48; 252) has a first boundary wall (50; 179) with a first suction edge (74; 180; 194; 210) and a second boundary wall (52; 181) spaced apart from the first boundary wall (50; 179) with a second suction edge (76; 130; 182; 196; 212). The first and second suction edges (74, 76; 130; 180, 182; 194, 196; 210, 212) are arranged to sink into the textile material of the textile surface (72; 178). The first boundary wall (50; 179) has a first inner side (62a) and a first outer side (62b), and the second boundary wall (52; 181) has a second inner side (64a) and a second outer side (64b). The first inner side (62a) faces the second inner side (64a), and a suction opening (70) is formed between the first inner side (62a) and the second inner side (64a).

2. The floor suction nozzle device according to claim 1, characterized in that, The resistivity of the filler of the composite material is about 100 Ω·mm 2 / m or less.

3. The floor suction nozzle device according to claim 1 or 2, characterized in that, The specific surface resistance of the composite material is about 25 Ω or greater.

4. The floor suction nozzle device according to any one of claims 1 to 2, characterized in that, The specific surface resistance of the composite material is about 1·10 8 Ω or less.

5. The floor suction nozzle device according to any one of claims 1 to 2, characterized in that, The filler is at least approximately uniformly distributed in the matrix material.

6. The floor suction nozzle device according to any one of claims 1 to 2, characterized in that, The fibers made of a conductive material are carbon-based fibers, and / or the flakes made of a conductive material are carbon-based flakes.

7. The floor suction nozzle device according to any one of claims 1 to 2, characterized in that, The composite material includes a share of fibers made of a conductive material and / or flakes made of a conductive material as fillers of about 5% by weight or more.

8. The floor suction nozzle device according to any one of claims 1 to 2, characterized in that, The composite material includes a share of fibers made of a conductive material and / or flakes made of a conductive material as fillers of about 50% by weight or less.

9. The floor suction nozzle device according to any one of claims 1 to 2, characterized in that, The composite material of the sliding base plate (41; 177; 202; 206; 248) of the floor nozzle device (11; 11'; 11"; 11"'; 111; 111'; 111"; 244) can be processed by a shaping method.

10. The floor suction nozzle device according to any one of claims 1 to 2, characterized in that, The average length / diameter of the fibers made of a conductive material and / or the flakes made of a conductive material is about 80 μm or greater.

11. The floor suction nozzle device according to any one of claims 1 to 2, characterized in that, The average length / diameter of the fibers made of a conductive material and / or the flakes made of a conductive material is about 4 mm or less.

12. The floor suction nozzle device according to any one of claims 1 to 2, characterized in that, The matrix material includes one or more of the following polymers or is formed by one or more of the following polymers: polyamide (PA), polycarbonate (PC), acrylonitrile (AC), butadiene, styrene, polyolefin, polyketone, polymethyl methacrylate (PMMA), polyvinyl chloride (PVC).

13. The floor suction nozzle device according to any one of claims 1 to 2, characterized in that, The matrix material comprises one or more of the following polymers or is formed from one or more of the following polymers: polyamide (PA), polycarbonate (PC), acrylonitrile-butadiene copolymer (ABS), polyolefin, polyketone, polymethyl methacrylate (PMMA), polyvinyl chloride (PVC).

14. The floor suction nozzle device according to claim 12, characterized in that, The polyamide (PA) is polyamide 6 (PA6) or polyamide 66 (PA66), and the polyolefin is polypropylene (PP).

15. The floor suction nozzle device according to any one of claims 1 to 2, characterized in that, The composite material comprises polyamide 6 and / or polyamide 66 as the matrix material and carbon fiber as the filler, and the share of the filler is 5% to 15% by weight percentage.

16. The floor suction nozzle device according to any one of claims 1 to 2, characterized in that, The sliding base plate (41; 177; 202; 206; 248) forms a contact surface leading to the surface to be cleaned, and / or the sliding base plate is arranged on the lower side (198; 207; 241) of the floor main body (14) or forms the lower side (198; 207; 241) of the floor main body (14).

17. The floor suction nozzle device according to any one of claims 1 to 2, characterized in that, The sliding base plate (41; 177; 202; 206; 248) comprises an upper region and a lower region, the lower region follows the upper region, the contact surface follows and / or is formed by the lower region, and the fibers made of an electrically conductive material and / or the sheets made of an electrically conductive material as the filler have a higher concentration in the lower region of the sliding base plate (41; 177; 202; 206; 248) and a lower concentration in the upper region of the sliding base plate.

18. The floor suction nozzle device according to claim 1, characterized in that, The floor suction nozzle device (11; 11'; 11"; 11"'; 111; 111'; 111"; 244) comprises a suction head (38) arranged on the floor main body (14), and at least one flow path is formed in the suction head (38), through which air can be transported from the environment of the floor suction nozzle device (11; 244) through the suction head (38) to the first suction edge (74) on the first outer side (62a) and / or the second suction edge (76; 130) on the second outer side (64b).

19. The floor suction nozzle device according to claim 18, characterized in that, The air transport via at least one flow path (102; 102') in the suction head (38) towards the first suction edge (74) and / or the second suction edge (76; 130) can be adjusted by an adjusting device (142; 152; 166).

20. The floor suction nozzle device according to claim 19, characterized in that, The adjusting device (142; 152; 166) is constructed such that the air transport through the at least one flow path (102, 102') towards the first suction edge (74) and / or the second suction edge (76; 130) can be blocked.

21. The floor suction nozzle device according to claim 1, characterized in that, The floor suction nozzle device (11; 244) comprises a switching device (162) for switching from a textile surface cleaning function to a hard surface cleaning function.

22. The floor suction nozzle device according to claim 21, characterized in that, The floor suction nozzle device (11; 11'; 11"; 11"'; 111; 111'; 111"; 244) includes a suction head (38) arranged on the floor body (14), at least one flow path (102, 102') being formed in the suction head (38), through which air can be conveyed from the environment of the floor suction nozzle device (11; 244) through the suction head (38) to a first suction edge (74) on the first outer side (62a) and / or a second suction edge (76; 130) on the second outer side (64b), and the air conveyance via at least one flow path in the suction head (38) towards the first suction edge (74) and / or the second suction edge (76; 130) can be adjusted by an adjusting device (142; 152; 166), and the switching device (162) is coupled to the adjusting device (142; 152; 166).

23. The floor suction nozzle device according to any one of claims 1 to 2, characterized in that It has a configuration as a floor suction nozzle (10; 10'; 10"; 10"'; 101; 101'; 101").

24. The floor suction nozzle device according to claim 1, characterized in that, The resistivity of the filler of the composite material is about 50 Ω·mm 2 / m or less.

25. The floor suction nozzle device according to claim 1, characterized in that, The resistivity of the filler of the composite material is about 20 Ω·mm 2 / m or less.

26. The floor suction nozzle device according to claim 1 or 2, characterized in that, The specific surface resistance of the composite material is about 250 Ω or greater.

27. The floor suction nozzle device according to any one of claims 1 to 2, characterized in that, The specific surface resistance of the composite material is about 1·10 7 Ω or less.

28. The floor suction nozzle device according to any one of claims 1 to 2, characterized in that, The fiber made of a conductive material is a carbon fiber, and / or the sheet made of a conductive material is a carbon sheet.

29. The floor suction nozzle device according to any one of claims 1 to 2, characterized in that, The composite material includes a share of at least 10% by weight of fibers made of a conductive material and / or sheets made of a conductive material as fillers.

30. The floor suction nozzle device according to any one of claims 1 to 2, characterized in that, The composite material includes a share of at least 15% by weight of fibers made of a conductive material and / or sheets made of a conductive material as fillers.

31. The floor suction nozzle device according to any one of claims 1 to 2, characterized in that, The composite material includes a share of at most 40% by weight of fibers made of a conductive material and / or sheets made of a conductive material as fillers.

32. The floor suction nozzle device according to any one of claims 1 to 2, characterized in that, The composite material includes a share of at most 30% by weight of fibers made of a conductive material and / or sheets made of a conductive material as fillers.

33. The floor suction nozzle device according to any one of claims 1 to 2, characterized in that The average length / diameter of the fibers made of a conductive material and / or the sheets made of a conductive material is about 100 μm or greater.

34. The floor suction nozzle device according to any one of claims 1 to 2, characterized in that The average length / diameter of the fibers made of a conductive material and / or the sheets made of a conductive material is about 500 μm or greater.

35. The floor suction nozzle device according to any one of claims 1 to 2, characterized in that The average length / diameter of the fibers made of a conductive material and / or the sheets made of a conductive material is about 3 mm or less.

36. The floor suction nozzle device according to any one of claims 1 to 2, characterized in that The average length / diameter of the fibers made of a conductive material and / or the sheets made of a conductive material is about 2 mm or less.

37. The floor suction nozzle device according to claim 24, characterized in that When switching to the hard floor cleaning function, the at least one flow path is automatically blocked in terms of air conveyance towards the first suction edge (74) and / or the second suction edge (76; 130).

38. A suction machine, the suction machine comprising the floor suction nozzle device (11; 11'; 11"; 11"'; 111; 111'; 111"; 244) according to any one of claims 1 to 37.

39. The suction machine according to claim 38, characterized in that It has a configuration as a vacuum cleaner, as an automatically traveling and automatically steering suction robot (240), and / or as a floor sweeper.

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