Floor cleaning device having floor head with wall

Abstract

A floor cleaning device is provided, comprising a floor head (22), at least one cleaning roller (66) rotatable about an axis of rotation (134), and a drive motor (104) for the at least one cleaning roller (66), the floor head (22) having a first chamber (90) and a second chamber (92), in which a partition wall portion (86) is provided which spatially separates the first chamber (90) and the second chamber (92) from one another, according to the invention, the drive motor (104) is arranged in the first chamber (90) and the at least one cleaning roller (66) is arranged at or in the first chamber (90), and in the second chamber (92) an electronic component (174) and / or at least one valve (176) and / or a pump and / or a battery device (196) is arranged.

Description

Technical Field

[0001] The present invention relates to a floor cleaning device, which includes a floor head, at least one cleaning roller rotatable about a rotation axis, and a drive motor for the at least one cleaning roller. Background Art

[0002] CN213850490U discloses a cleaning robot.

[0003] EP 0 783 863 B1 discloses a vacuum cleaner, in which all functional components are located in the head that travels on the floor surface. The head has a housing to which a handle is swingably connected. No functional components of the vacuum cleaner are provided on the handle.

[0004] DE 20 2022 101 312 U1 discloses a floor surface cleaning device having a cassette, and the cassette has a holding device for at least one cleaning roller.

[0005] EP 3 797 663 A1 discloses a cleaning robot.

[0006] EP 3 695 767 A1 discloses a floor cleaning device having a collection container and an ultra-fine fiber brush roller. A housing is provided, and the housing can move along the surface to be cleaned. A battery is assembled on the housing and is electrically connected to the drive motor.

[0007] WO 2021 / 112354 A1 discloses a vacuum cleaner.

[0008] Cleaning devices are disclosed in CN 111685647 A, US 2020 / 0315415 A, EP 3 117 754 A1, US 2015 / 0313434 A, JP 2015146958 A2 or EP 2 659 816 A2. Additional cleaning devices are disclosed in US 2006 / 0064828 A or WO 01 / 41618 A1. CN 108478109 A and CN 209489960 U disclose robots for cleaning photovoltaic modules.

[0009] DE 10 2015 104 749 A1 discloses a manually operated or autonomous floor cleaner, and so does DE 10 2015104 750 A1.

[0010] Floor cleaning devices are described, for example, in EP 3 750 464 A1, EP 3 884 834 A1, US 2021 / 018620 A1 or KR 201206900U.

[0011] WO 2018 / 162092 A1 discloses a floor cleaning device, by which the autonomous cleaning of the floor surface can be performed.

[0012] Floor cleaning devices are also disclosed, for example, in EP 2 574 264 B1, US 8,855,941 B1, DE 102 42 257 B4 and US 10,149,589 B2.

[0013] DE 20 2015 101 302 U1 discloses a cleaning device in the form of a vacuum cleaner.

[0014] Surface cleaning machines are known from WO 2016 / 058901 A1, WO 2016 / 058856 A1, WO 2017 / 063663 A1, WO 2016 / 058879 A1, WO 2016 / 058956 A1. A surface cleaning machine is also known from WO 2016 / 058907 A1.

[0015] A portable floor cleaning device is known from US 4,875,246, which has a roller driven by an electric motor.

[0016] DE 20 2009 013 434 U1 discloses a device for wet floor cleaning using a brush rotatable about a rotation axis.

[0017] A cleaning machine is disclosed by CN 201 197 698 Y.

[0018] A device for cleaning a floor or other hard surfaces is known from US 6,026,529.

[0019] A surface cleaning machine with a rotary brush is disclosed by WO 2010 / 041185 A1.

[0020] A cleaning head for a floor cleaning machine is known from US 7,665,174 B2.

[0021] A floor cleaning device is known from US 4,173,054, which includes a handle, a main body, a roller mechanism having a roller with a cleaning belt, a squeegee and a dirty fluid receiving portion.

[0022] A surface cleaning machine is known from WO 2013 / 106762 A2, which has a cleaning roller and a drive unit for driving the cleaning roller. A dirt housing into which the dirt is swept during rotation of the cleaning roller is provided. The dirt housing can be opened.

[0023] A floor scrubber is known from US 7,921,497 B2, which can be operated manually and includes a drive roller coupled to a scrubbing roller.

[0024] Another floor cleaning machine is known from WO 2015 / 086083 A1.

[0025] A hard floor cleaning device is known from US 3,789,449.

[0026] A self-propelled cleaning device with a cleaning brush and an associated dirt collection chamber is known from DE 103 57 637 A1.

[0027] A household floor cleaning device with a wiping roller is known from DE 10 2007 054 500 A1.

[0028] A floor cleaning device with a housing, a hose assembly, and a cleaning head is known from US 2006 / 0272120 A1.

[0029] A cleaning machine station for a cleaning machine is known from DE 10 2017 120 723 A1, wherein the cleaning machine station has a receiving chamber for the cleaning head of the cleaning machine.

[0030] A floor cleaning machine is known from WO 2005 / 087075 A1, which has a handle that is pivotally arranged on a base.

[0031] CN 107007215 A discloses a floor cleaning robot.

[0032] DE 20 2018 104 772 U1 discloses a dirty water collection mechanism and a dirty water detection mechanism as well as a cleaning device.

[0033] Cleaning machines are also known from AU 2017101723 A4, CN 206687671 U, DE 20 2016 105 300 U1, US 9,622,637 B1, CN 205359367 U, US 2017 / 0119225 A1, CN 205181250 U, CN 205181251 U, CN205181256 U, DE 20 2016 105 299 U, WO 2017 / 059602 A1, WO 2017 / 059600 A1, WO 2017 / 059601 A1, WO 2017 / 059603 A1 or DE 20 2016 105 301 U1.

[0034] The not previously published DE 10 2022 102 924.7 discloses a floor cleaning device, which includes a floor head and at least one cleaning roller. The cleaning roller rotates about a rotation axis during the operation of the floor cleaning device. Among them, at least one cleaning roller is at least partially held on the floor head by a holding device, and the holding device can remove the at least one cleaning roller from the floor head. This document is cited in full. Other floor cleaning devices are disclosed in the not previously published DE 10 2022 102 937.9 and DE 10 2022 102 918.2, the full texts of which are cited.

[0035] More floor cleaning devices are disclosed in CN207850637U and WO21248591A1. Summary of the Invention

[0036] The object of the present invention is to provide a floor cleaning device of the type described at the beginning, which is compactly constructed and can be made in a simple manner.

[0037] According to the present invention, this object is solved in the floor cleaning device described at the beginning in such a way that the floor head has a first chamber and a second chamber, a partition wall portion is provided, and the partition wall portion spatially separates the first chamber and the second chamber from each other. A drive motor is arranged in the first chamber, and at least one cleaning roller is arranged at or in the first chamber, and electronic components and / or at least one valve and / or pump and / or battery device are arranged in the second chamber.

[0038] In the solution according to the present invention, a partition wall portion is provided, which divides the floor head into a first part having a first chamber and a second part having a second chamber, wherein a spatial separation is provided. Thereby, functional components loaded with dirty fluid can be separated from components that are at most allowed to be loaded with dirty fluid in a small range (such as electronic components).

[0039] The second chamber can be separated from the first chamber in a fluid-protected manner by the partition wall portion. In particular, splash water protection is thereby achieved for the second chamber. In principle, it is possible here for the partition wall portion to be constructed in a fluid-tight manner. In an advantageous embodiment, the partition wall portion is constructed to be not completely fluid-tight and includes one or more (small) openings facing the first chamber, so that the liquid accumulated in the second chamber can flow out. However, the at least one opening is arranged and constructed such that substantial fluid protection (preventing the intrusion of media) for the second chamber is achieved through the partition wall portion, and in particular splash water protection is achieved. For example, the total area of these openings accounts for at most 5% and in particular at most 3% and in particular at most 2.5% of the total area of the partition wall portion.

[0040] Advantageously, during operation of the floor cleaning device, the interior space of the first chamber is at least partially loaded with dirt and / or liquid, while the second chamber is protected by a partition wall section against the intrusion of dirt and liquid. Thus, to a certain extent, a separation between a clean area and a contaminated area can be achieved, wherein the clean area with the second chamber is protected against fluids. This protection against fluids can be an encapsulation with a fluid-tight partition wall section, or can be at least one protection section that prevents splashing, etc., for example, the protection section has small openings in the partition wall section, and these openings prevent the accumulation of liquid in the second chamber by allowing the liquid to drain through such openings. Thus, for example, electronic components can be arranged in this second chamber.

[0041] Advantageously, the floor head is assigned a placement plane for placement on the floor to be cleaned, and the placement plane has at least one of the following features:

[0042] - The partition wall section between the first chamber and the second chamber is at least partially oriented transversely to the normal of the placement plane;

[0043] - The second chamber is arranged above the first chamber with reference to the height direction perpendicular to the placement plane.

[0044] Thus, the floor head is separated into a lower part and an upper part by the partition wall section. This results in an optimized positionability of the corresponding components with simple manufacturability of the floor head.

[0045] Advantageously, at least one of the following features is provided:

[0046] - The second chamber is closed;

[0047] - The first chamber is at least partially open, especially towards at least one cleaning roller.

[0048] Thus, an optimized cleaning effect is achieved with a simple structure.

[0049] Furthermore, advantageously, at least one of the following features is provided:

[0050] - The first chamber includes a receiving chamber for a dirty fluid tank;

[0051] - The first chamber includes a receiving cylinder for at least one cleaning roller, and / or the receiving cylinder is arranged at the first chamber.

[0052] In principle, the area around the dirty fluid tank is loaded with dirty fluid. By arranging the receiving cylinder on or in the first chamber, a compact structure and simple manufacturability are achieved. The electronic components or similar components in the second chamber can be optimally protected.

[0053] Advantageously, the second chamber is closed by the first cover. This results in simple manufacturability.

[0054] Advantageously, at least one of the following features is provided:

[0055] - The first cover is permanently and firmly connected to the floor head;

[0056] - The first cover closes the second chamber upward with reference to the height direction;

[0057] - The first cover at least partially forms the upper side of the floor head;

[0058] - The first cover is configured as multi-piece or has multiple regions.

[0059] This results in a compact structure of the floor head with simple manufacturability.

[0060] Advantageously, the second chamber and / or the first cover of the second chamber has a recess or a bulge or a depression, and the recess or the bulge or the depression has a retracted region relative to the upper side of the floor head. If a grip device is arranged on the floor head, a small swing angle (relative to the placement plane of the floor head) can be achieved via the recess or the bulge or the depression when the grip device is swingable. This results in optimized under-travel performance.

[0061] Furthermore, advantageously, at least one of the following is positioned at the retracted region:

[0062] - At least one holder for a cleaning roller;

[0063] - A holder for the grip device;

[0064] - A hinge device for the grip device, via which the grip device is held in a swingable manner relative to the floor head.

[0065] Optimized space utilization is achieved by arranging the holder for the cleaning roller. When the floor cleaning device is not in operation, the cleaning roller can be held on the holder for the cleaning roller, for example, for drying. Small swing angles can be achieved by arranging the hinge device or the holder for the grip device (for the operation of an operator standing) for optimized under-travel performance for furniture and the like.

[0066] In particular, the floor head has a first width direction transverse to the rotation axis and a second width direction parallel to the rotation axis, and the floor cleaning device has at least one of the following features:

[0067] - The recess or the bulge or the depression extends along the first width direction and has an extension in the second width direction;

[0068] - The recess or bulge or depression opens towards the front side and / or the rear side of the floor head;

[0069] - With reference to the first width direction, a receiving portion for the battery device and / or the battery device is arranged beside the recess or bulge or depression;

[0070] - At least one cleaning roller is arranged in front of the recess or bulge or depression with reference to the first width direction;

[0071] - With reference to the first width direction, a scraping device for scraping the dirty fluid from at least one cleaning roller and / or a hairpin device for receiving hair are arranged in front of the recess or bulge or depression;

[0072] - With reference to the first width direction, a third chamber is arranged in front of the recess or bulge or depression.

[0073] If the recess opens towards the front side and / or the rear side of the floor head, the liquid (such as dirty fluid) accumulated there can flow out.

[0074] By arranging the receiving portion for the battery device or the battery device beside the recess or bulge or depression, an optimized space utilization is achieved. For example, torque balance can also be realized in combination with the drive motor in this way.

[0075] If at least one cleaning roller is arranged in front of the recess or bulge or depression with reference to the first width direction, an optimized space utilization is achieved.

[0076] If a scraping device for scraping the dirty fluid and / or a hairpin device are arranged in front of the recess or bulge or depression, an optimized space utilization is achieved.

[0077] In particular, a third chamber is provided. Through the third chamber, the hairpin device can be taken out and cleaned, for example.

[0078] In one embodiment, a third chamber is arranged on the floor head, wherein the second chamber is fluid-sealedly closed relative to the third wall portion by a wall portion or another wall portion. For example, the third chamber is openable. For example, a hairpin device is arranged in the third chamber in a removable manner, and the hairpin device can be taken out for cleaning and then put in again.

[0079] Advantageously, at least one of the following features is provided:

[0080] - The third chamber is arranged in front of the second chamber in the direction towards at least one cleaning roller;

[0081] - The third chamber is arranged above at least one partial area of at least one cleaning roller with reference to the height direction;

[0082] - A scraping device and / or a hairpin device for scraping dirty fluid from at least one cleaning roller is positioned in a removable manner, especially at the third chamber;

[0083] - The third chamber is closed by a removable second cover, and the second cover especially has at least one of the following features:

[0084] - The second cover at least partially forms the upper side of the floor head;

[0085] - The second cover is flush with the first cover of the second chamber;

[0086] - The second cover can be removed from the floor head in a direction transverse to the axis of rotation.

[0087] By providing a third chamber having at least one of the above features, optimized space utilization is achieved. The scraping device and / or the hairpin device can be removed in a simple manner for cleaning.

[0088] A closed surface for the floor head is obtained by the second cover.

[0089] More particularly advantageously, the partition wall portion has a first region that can separate the first chamber from the second chamber in a splash-proof manner. A space-saving structure is thus obtained, and functional components that may be soiled by dirty fluid are separated from components that must not be "systematically" loaded with dirty fluid.

[0090] In particular, the partition wall portion has a second region, or an additional partition wall portion is provided that separates the second chamber from the third chamber in a fluid-tight manner, wherein the second region or the additional partition wall portion is oriented transversely to and especially perpendicular to the first region. The second chamber can thus be configured to be splash-proof so that electronic components and similar components can be arranged therein in a protected manner. A space-saving structure is obtained by the adjacent third chamber.

[0091] In particular, the first region forms the bottom for the third chamber. A space-saving structure is thus obtained.

[0092] In one embodiment, the floor head includes a structural carrier, and the partition wall portion is formed or arranged on the structural carrier, wherein the structural carrier holds at least one of the following:

[0093] - A drive motor;

[0094] - A torque transmission device for transmitting the torque of the drive motor to at least one cleaning roller;

[0095] - A dirty fluid tank that can be removed from the floor head, especially;

[0096] - A battery device or a housing part for a battery device;

[0097] - A valve and / or a pump;

[0098] - An electronic component;

[0099] - A grip device;

[0100] - At least a part of a rotary bearing device for at least one cleaning roller;

[0101] - A support device for supporting a floor head on a floor to be cleaned;

[0102] - A blower device.

[0103] An optimized structure is thus obtained, and the number of structural components can be kept low.

[0104] In one embodiment, the structural carrier is configured as a carrier plate or includes a carrier plate. Thereby, in particular, the floor head can be configured to have a relatively low height dimension so as to achieve good under-travel performance under furniture or the like.

[0105] In one embodiment, the partition wall part has at least one recess or at least one bulge or at least one depression on which functional components are arranged. Thereby, the accommodation volume can be increased. A space-saving structure is thus obtained again, especially in terms of the height dimension. This can achieve good under-travel performance under furniture or the like.

[0106] In particular, here, at least one recess or at least one bulge or at least one depression is located outside the region on which a dirty fluid tank is positioned, and in particular, outside the accommodation chamber for the dirty fluid tank. Thereby, a dirty fluid tank with a relatively large accommodation volume for dirty fluid can be formed.

[0107] Advantageously, at least one of the following features is provided:

[0108] - The partition wall part has a first recess or a first bulge or a first depression, and at least a part of the electronic components is arranged on the first recess or the first bulge or the first depression;

[0109] - The partition wall part has a second recess or a second bulge or a second depression, and the battery device and / or the housing part for the battery device is arranged on the second recess or the second bulge or the second depression;

[0110] - The partition wall part has a third recess or a third bulge or a third depression, and a magnet valve is arranged on the third recess or the third bulge or the third depression.

[0111] This results in an optimized space utilization, especially for the second chamber.

[0112] Furthermore, it is advantageous if at least one of the following features is provided:

[0113] - At least one recess or at least one bulge or at least one indentation points towards the first chamber and increases the accommodation volume of the second chamber. This results in an optimized space utilization.

[0114] Advantageously, the dirty fluid tank is positioned between the first recess or the first bulge or the first indentation and at least one cleaning roller and / or is positioned between the second recess or the second bulge or the second indentation and at least one cleaning roller. This results in an optimized space utilization.

[0115] Furthermore, it is advantageous if the partition wall portion has additional recesses or additional bulges, which are arranged above the drive motor and / or the torque transmission device with reference to the height direction. In particular, the accommodation volume of the first chamber is increased by the additional recesses or additional bulges. Thus, a space-saving construction of the floor head can be achieved and the available space is utilized optimally.

[0116] Advantageously, the partition wall portion extends from the rear end portion of the floor head up to at least one cleaning roller. This results in a simple structure and simple manufacturability.

[0117] For the same reason, it is advantageous if the partition wall portion extends between the opposite sides of the floor head.

[0118] It can be provided that the partition wall portion is formed in a fluid-tight manner and in particular encapsulates the second chamber. In one embodiment, the partition wall portion has one or more openings between the second chamber and the first chamber. This can result in a simplified manufacture of the partition wall portion. Through one or more such openings, the liquid accumulated in the second chamber can also be drained into the first chamber if necessary. Then, in particular, it is provided that the total area of these openings accounts for at most 5%, preferably at most 3%, and especially at most 2.5% of the total area of the partition wall portion, where the total area of the partition wall portion is based on the effective area of the partition wall at the second chamber. Thus, most of the total area of the partition wall portion (95% or more) is "sealed", so that in particular an effective splash protection is obtained, which only allows the medium to penetrate into the second chamber to a very small extent at most.

[0119] More particularly advantageously, a cleaning liquid tank is provided, which supplies cleaning liquid to at least one cleaning roller and / or the floor to be cleaned via a nozzle device. Thereby, wet wiping cleaning on the floor to be cleaned, especially a hard floor, can be performed. The cleaning liquid tank can in principle be arranged on the floor head, especially when the floor cleaning device is configured as a self-propelled and self-steering floor cleaning device. Alternatively, the cleaning liquid tank can also be arranged on a grip device for guiding the floor cleaning device by a user standing on the floor to be cleaned.

[0120] Advantageously, at least one of the following features is provided:

[0121] - The cleaning liquid tank is positioned on the floor head or the grip device;

[0122] - A conveying device for the cleaning liquid is provided, and the cleaning liquid flows from the cleaning liquid tank to the nozzle device via the conveying device;

[0123] - A valve and / or a pump is arranged on the cleaning liquid tank or the conveying device for the cleaning liquid leading to the nozzle device.

[0124] Thus, an optimized cleaning effect is obtained. The cleaning liquid can be guided to at least one cleaning roller (and thus indirectly to the floor to be cleaned) and / or directly to the floor to be cleaned via the nozzle device.

[0125] Whether to supply cleaning liquid to the nozzle device and, if necessary, how much cleaning liquid to supply can be controlled via a valve such as a solenoid valve. Alternatively or additionally, a (transport) pump can be provided for this purpose.

[0126] In one embodiment, a dirty fluid tank is positioned at or in a first chamber, and in particular, it is provided that during the operation of the floor cleaning device, the dirty fluid is coupled into the dirty fluid tank from at least one cleaning roller without a blower. In particular, a receiving chamber for the dirty fluid tank is arranged at the first chamber.

[0127] Furthermore advantageously, at least one of the following features is provided:

[0128] - The battery device and / or the receiving part for the battery device are arranged above the area on the floor head where the dirty fluid tank is arranged with reference to the height direction, and in particular, are arranged above the receiving chamber for the dirty fluid tank;

[0129] - The battery device and / or the receiving part for the battery device extend beyond the dirty fluid tank and in particular extend beyond the receiving chamber;

[0130] - The wall area bounding the second chamber is arranged above the area on which the dirty fluid tank is arranged with reference to the height direction, and in particular, is arranged above the receiving chamber.

[0131] Advantageously, a torque transmission device for torque transmission from a drive motor to at least one cleaning roller is arranged at or in the first chamber. Thereby, an optimized space utilization is achieved.

[0132] Furthermore advantageously, a rotational bearing device for at least one cleaning roller is at least partially arranged at or in the first chamber. Thereby, a space-saving structure is achieved.

[0133] Furthermore advantageously, a partition wall is arranged in the first chamber, which partitions the first partial space from the second partial space, wherein the drive motor and / or the torque transmission device are arranged in the first partial space, and a dirty fluid tank is located in the second partial space. Thereby, the loading of the drive motor with dirty fluid can be reduced.

[0134] It can be provided that the dirty fluid tank has a first region and a second region connected to the first region, wherein the second region has a greater width in a second width direction compared to the first width, and the second region is located between the drive motor and at least one cleaning roller, while the first region is located in front of a first end side of the drive motor with reference to the second width direction.

[0135] With this solution, the space utilization of the floor head is optimized. A dirty fluid tank can be provided, which has a large accommodation volume and can be "fitted" in the floor head in a space-saving manner.

[0136] An optimized couplability is achieved via the second region, and in particular, the couplability of dirty fluid from at least one cleaning roller unit without a blower is achieved.

[0137] The second region follows the drive motor with reference to the first width direction and is thereby located between the drive motor and at least one cleaning roller. To a certain extent, the second region forms a finger-shaped portion that sinks into the region between the drive motor and at least one cleaning roller.

[0138] Advantageously, the first region follows the second region in the first width direction. Thereby, an optimized space utilization rate is achieved while optimizing the couplability of dirty fluid.

[0139] Even more particularly advantageously, the insertion direction of the dirty fluid tank on the floor head is at least approximately parallel to the second width direction. Thereby, for the user, an easy way to remove the dirty fluid tank and the insertability on the floor head are achieved. In addition, an optimized space utilization rate is also achieved.

[0140] Furthermore, it is advantageous that a torque transmission device is provided for torque transmission from at least one drive motor to at least one cleaning roller, which torque transmission device bridges the distance between the drive motor and the at least one cleaning roller in a first width direction and is coupled to the drive motor in a torque - acting manner in the region of the second end side of the drive motor, wherein the second end side of the drive motor faces away from the first end side. Thereby, an optimized space utilization is achieved. The at least one cleaning roller can operate at an optimized rotational speed and with an optimized torque.

[0141] Furthermore, it is advantageous to provide at least one of the following features:

[0142] - The first region has a greater width in the first width direction than the width of the second region in the first width direction;

[0143] - The maximum width of the dirty fluid tank in the second width direction corresponds to the maximum width of the second region in the second width direction;

[0144] - The maximum width of the dirty fluid tank in the first width direction corresponds to the sum of the width of the first region in the first width direction and the width of the second region in the first width direction;

[0145] - The dirty fluid tank has an L - shape which has a first arm as the second region and a second arm as the first region, wherein the first arm and the second arm are transverse to each other and in particular perpendicular to each other;

[0146] - The first region and the second region are integrally connected to each other;

[0147] - The first region and the second region define a common accommodation volume for the dirty fluid of the dirty fluid tank;

[0148] - The width of the second region in the second width direction is at least 60%, in particular at least 70%, of the total width of the floor head in the second width direction;

[0149] - The width of the second region in the second width direction is at least 1.5 times, in particular at least 2 times, and in particular at least 2.5 times the width of the first region in the second width direction.

[0150] Thereby, a space - saving arrangement of the dirty fluid tank on the floor head is achieved. The dirty fluid tank can be constructed to have a larger accommodation volume. The first region and the second region can define a coherent accommodation space for the dirty fluid, or multiple accommodation spaces can be provided.

[0151] More particularly advantageously, the first region and the second region delimit a free space in which the drive motor is arranged at least partially when the dirty fluid tank is held on the floor head, wherein, in particular, the free space has the shape of a hollow cuboid. This results in an optimized space utilization.

[0152] In particular, here, when the dirty fluid tank is held on the floor head, the free space is delimited by the torque transmission device opposite to the first region of the dirty fluid tank. This results in an optimized space utilization. The floor head can be constructed compactly.

[0153] More particularly advantageously, a through-port device is arranged on the second region, in particular in the case without a blower, the dirty fluid from at least one cleaning roller can be coupled into the inner space of the dirty fluid tank via the through-port device, and the floor cleaning device in particular has at least one of the following features:

[0154] - The length of the through-port device in the second width direction is at least 80% of the length of at least one cleaning roller along the rotation axis of at least one cleaning roller;

[0155] - A scraping device is arranged in the region of the through-port device, and the dirty fluid can be stripped from at least one cleaning roller and conveyed to the dirty fluid tank by the scraping device;

[0156] - A hairpin device is arranged on the floor head, and the hair from at least one cleaning roller can be received by the hairpin device.

[0157] Thus, a compact structure is obtained. This results in an optimized cleaning effect.

[0158] In one embodiment, the scraping device is arranged on the hairpin device.

[0159] The drive shaft of the drive motor has a drive shaft rotation axis, and the drive shaft rotation axis preferably has at least one of the following features:

[0160] - The drive shaft rotation axis is oriented parallel to the rotation axis of at least one cleaning roller;

[0161] - The drive shaft rotation axis is parallel to the second width direction;

[0162] - The drive shaft rotation axis is transverse to and in particular perpendicular to the first width direction;

[0163] - The removal direction in which the dirty fluid tank is removed from the floor head is at least substantially parallel to the drive shaft rotation axis;

[0164] - The removal direction in which the battery device is removed from the floor head is transverse to and in particular perpendicular to the drive shaft rotation axis.

[0165] As a result, a compact structure of the floor head is obtained. This enables a dirty fluid tank with a relatively high holding capacity for dirty fluid to be realized.

[0166] Advantageously, a battery device is arranged on the floor head in a removably manner, in particular having at least one of the following features:

[0167] - With reference to the height direction perpendicular to the placement plane of the floor head on the floor to be cleaned, the battery device and / or the receptacle for the battery device are positioned on the floor head above the dirty fluid tank and / or the drive motor and / or at least one cleaning roller and / or the partition wall part, and in particular, the receptacle and / or the battery device protrude beyond the dirty fluid tank;

[0168] - The removal direction of the battery device from the floor head is transverse to and in particular perpendicular to the second width direction;

[0169] - The removal direction of the battery device from the floor head is at least substantially parallel to the first width direction;

[0170] - The battery device can be removed from the rear side of the floor head;

[0171] - The dirty fluid tank is positioned on the floor head between the end of the battery device and at least one cleaning roller with reference to the first width direction.

[0172] As a result, a space-saving structure is obtained. The receptacle or the battery device can be protected from dirty fluid in a simple manner.

[0173] Furthermore, advantageously, the receiving cylinder for the battery device has a push-in opening pointing to the rear side of the floor head, wherein the rear side faces away from the front side of the floor head, and at least one cleaning roller is positioned in the region of the front side of the floor head. Thus, the battery device can be inserted into the floor head such that the battery device has the maximum spacing from at least one cleaning roller. As a result, good protection against splashing water, dirty fluid, etc. is obtained. The floor head can thus be made in a simple manner again.

[0174] Advantageously, the receptacle for the battery device and / or the battery device are arranged adjacent to the first region of the dirty fluid tank, in particular having at least one of the following features:

[0175] - The end of the receptacle for the battery device and / or the end of the battery device are located above the dirty fluid tank and in particular above the first region with reference to the height direction of the floor head;

[0176] - With reference to the second width direction, the receptacle for the battery device and / or the battery device are positioned offset relative to the drive motor;

[0177] - With reference to the second width direction, the receiving part for the battery device and / or the battery device are positioned offset relative to the torque transmission device;

[0178] - With reference to the first width direction, the receiving part for the battery device and / or the battery device are positioned offset relative to the drive motor;

[0179] - With reference to the first width direction, the receiving part for the battery device and / or the battery device are positioned offset relative to the torque transmission device;

[0180] - With reference to the height direction of the floor head, the receiving part for the battery device and / or the battery device are positioned offset relative to the dirty fluid tank on the floor head.

[0181] Thus, a compact structure is obtained. The battery device can be integrated into the floor head in a space-saving manner. A relatively low height of the floor head in the height direction can be achieved. Thereby, good under-travelability under furniture and the like is obtained again.

[0182] By the corresponding arrangement of the receiving part, moment balance on the floor head can also be achieved by utilizing optimized center-of-gravity positioning.

[0183] In one embodiment, it is provided that the rotary bearing device includes a first rotary bearing which is firmly arranged on the floor head and positioned on the receiving cylinder, the rotary bearing device has a second rotary bearing which is arranged on the cover for the receiving cylinder, wherein the cover can move relative to the floor head, and wherein, during the operation of the floor cleaning device, at least one cleaning roller is supported on the first rotary bearing in a manner rotatable relative to the first rotary bearing and is supported on the second rotary bearing as a support, and at least one cleaning roller can be removed from the cover.

[0184] By supporting at least one cleaning roller in a rotatable manner on the first rotary bearing and the second rotary bearing as a support, a cleaning roller with a relatively large length can be provided. Thereby, a relatively large area on the floor to be cleaned can be cleaned.

[0185] On the floor head, at least one cleaning roller is positioned in the receiving cylinder. The receiving cylinder is closed by the cover, and hereby holds at least one cleaning roller in position and also provides corresponding rotational support via the second rotary bearing.

[0186] By the movement of the cover relative to the floor head, the receiving cylinder can be opened and at least one cleaning roller can be removed in a simple manner. The movability of the cover relative to the floor head (so that the receiving cylinder can be opened via the movement of the cover) can be achieved here by a movable arrangement (movable mounting) of the cover on the floor head and / or by the complete removability (separability) of the cover from the floor head. For example, the movable support of the cover on the floor head can be a swing support and / or a movable support.

[0187] In principle, it is also possible here that at least one cleaning roller can be removed while it is held on the cover. Thereby, the user does not have to grasp the at least one cleaning roller.

[0188] By means of the cover on the receiving cylinder, it is possible to remove at least one cleaning roller even when the floor cleaning device is placed at the floor station.

[0189] Due to the removability of the cleaning roller from the cover, a simplified cleaning of the cleaning roller itself is obtained. The cleaning roller (after being removed from the cover) can be cleaned, for example, in a washing machine (without the cover).

[0190] In the solution according to the invention, the cover is a part that can move relative to the floor head and is not part of at least one cleaning roller.

[0191] The solution according to the invention can be implemented on different machine types. The solution can be implemented on a floor cleaning device having a blower device for sucking up dirty fluid, in particular from at least one cleaning roller. The solution can be implemented on a floor cleaning device without a blower. The solution can be implemented on a floor cleaning device having a grip device for guiding by a standing user on the floor to be cleaned. The solution can be implemented on self-propelled and self-steering floor cleaning devices (cleaning robots).

[0192] Advantageously, the removal direction of at least one cleaning roller from the receiving cylinder is at least approximately parallel to the axis of rotation. Thereby, it is easy to remove at least one cleaning roller and it is also easy to place it at the receiving cylinder and couple it to the rotational bearing device. In addition, a structurally simple design of the floor head is obtained.

[0193] More particularly advantageously, the receiving chamber for the dirty fluid tank is arranged on the floor head, and the receiving chamber is arranged beside the receiving cylinder for at least one cleaning roller in a first width direction transverse to the axis of rotation. Thereby, the dirty fluid stripped from at least one cleaning roller can be directly coupled, especially in the case of without a blower, into the dirty fluid tank in the receiving chamber. By means of the receiving chamber, it is also possible, for example, to remove the dirty fluid tank laterally from the floor head. Thereby, simple operability is obtained.

[0194] More particularly advantageously, the dirty fluid tank can be removed from the receiving chamber in the removal direction, which is at least substantially parallel to the axis of rotation. Thereby, removability and insertability of the dirty fluid tank on the floor head are obtained. For example, the dirty fluid tank can be pushed into the receiving chamber or removed from the receiving chamber in the type of a drawer. For example, thus even when the floor cleaning device is placed on the floor station, the dirty fluid tank can be removed.

[0195] Advantageously, at least one of the following features is provided:

[0196] - At least one cleaning roller can be removed from the receiving cylinder at a first side of the floor head;

[0197] - The dirty fluid tank can be removed from the receiving chamber at a first side of the floor head;

[0198] - The dirty fluid tank and at least one cleaning roller can be removed from the floor head at the same side (in particular the same side);

[0199] - The dirty fluid tank and at least one cleaning roller can be removed from the floor head and / or inserted at the floor head independently of each other;

[0200] - The removal direction in which the dirty fluid tank is removed from the floor head and the removal direction in which at least one cleaning roller is removed from the floor head are parallel to each other.

[0201] If at least one cleaning roller can be removed from the receiving cylinder at a first side of the floor head, simple removability or insertability of at least one cleaning roller at the floor head is obtained.

[0202] Accordingly, the dirty fluid tank can also be inserted at the floor head or removed from the floor head in a simple manner.

[0203] If the dirty fluid tank and at least one cleaning roller can be removed from the same side and, for example, also in parallel directions, a structurally advantageous configuration is obtained. The corresponding floor head can be manufactured in a simple manner. For example, if the floor cleaning device is placed on the floor station, the dirty fluid tank and the cleaning roller can also be removed or inserted in a simple manner.

[0204] Advantageously, a torque transmission device is arranged on the floor head, which transmits the torque of the drive motor to at least one cleaning roller, wherein the torque transmission device includes a driven element having at least one of the following features:

[0205] - The driven element is arranged on the floor head;

[0206] - The driven element is positioned on a first rotational bearing;

[0207] - The driven element forms a first rotating bearing;

[0208] - The driven element is positioned closer to the second side of the floor head than to the first side, where the first side faces away from the second side, and the cover is positioned on the first side and / or at least one cleaning roller can be removed via the first side.

[0209] Thereby, at least one cleaning roller can be driven in a simple manner to be put into rotational motion. This results in a compact structure of the floor head. Relatively long cleaning rollers can be used.

[0210] In a simple embodiment in terms of design, the second rotating bearing includes a rolling bearing (such as a ball bearing) or a sliding bearing. Thereby, an optimized support can be formed in a simple manner.

[0211] In particular, the cover can move relative to the floor head along with the separation from at least one cleaning roller, and / or the cover can be removed from the floor head together with at least one cleaning roller held thereon. In particular, there are corresponding selection possibilities for the user. If the cover can be removed from the floor head together with at least one cleaning roller held thereon, for example, it can be removed without the user having to directly grasp the contaminated cleaning roller.

[0212] In particular, it is provided that the cover is movably connected to the floor head and / or can be removed from the floor head. In the case where the cover is movably connected to the floor head, the cover is connected to the floor head in a manner that can move via a swing bearing and / or a moving bearing, for example. In the case where it can be removed from the floor head, the cover can be separated from the floor head as a whole.

[0213] Advantageously, the receiving cylinder for at least one cleaning roller is open towards the front side of the floor head, and the floor cleaning device has at least one of the following features:

[0214] - The front end of the floor head is located on at least one cleaning roller;

[0215] - At least one cleaning roller extends beyond the receiving cylinder at the front side;

[0216] - The receiving cylinder is open towards the placement plane of the floor head.

[0217] Thereby, edge - close cleaning can be achieved. At least one cleaning roller can travel up to the lateral boundary of the floor to be cleaned and can still touch the lateral boundary.

[0218] In particular, the cover is fixed to the side of the floor head in a manner that can be removed from the floor head. Thereby, the receiving cylinder can be closed or opened in a simple manner, and the cleaning roller can be removed from or placed on the floor head in a simple manner. Thus, the cleaning roller can be removed, for example, in a simple manner after the cleaning process, in order to clean it, for example, in a washing machine.

[0219] Advantageously, a fixing device is provided, by means of which the cover is detachably fixed to the floor head, wherein the cover can be removed from the floor head as a whole. Thereby, the support can also be connected to the floor head via the cover in a simple manner, in order to enable reliable rotational support of the cleaning roller during the cleaning operation.

[0220] In an advantageous structural embodiment, at least one of the following features is provided:

[0221] - The fixing device includes a form-fitting connection and / or a force-fitting connection (such as a magnetic connection);

[0222] - The fixing device includes at least one movable fixing element that can be moved by user intervention.

[0223] Advantageously, the receiving chamber for the dirty fluid tank and the receiving cylinder for at least one cleaning roller are arranged directly in sequence in a first width direction transverse to the rotational axis. Thereby, the flow path between at least one cleaning roller and the receiving chamber having the dirty fluid tank and thus to the dirty fluid tank is minimized. Therefore, the dirty fluid stripped from at least one cleaning roller can be directly coupled into the dirty fluid tank in a simple manner and especially without a blower.

[0224] In principle, the floor cleaning device according to the invention can be configured as a hand-guided floor cleaning device having a grip device, which is pivotably arranged on the floor head. Then the user can stand on the floor to be cleaned and guide the floor cleaning device on the floor to be cleaned via the grip device.

[0225] Alternatively, it is possible that the floor cleaning device according to the invention is configured as a self-propelled and self-steering floor cleaning device ("cleaning robot").

[0226] The floor cleaning device can be operated with a blower device (especially for sucking the dirty fluid from at least one cleaning roller unit) or can be operated without a blower. In the presence of a blower device, the blower device is arranged on the grip device or on the floor head. Description of the Drawings

[0227] The following description of the preferred embodiments is used to explain the present invention in detail in conjunction with the drawings. Among them:

[0228] Figure 1 Perspective view of a floor cleaning device according to the invention, the floor cleaning device being parked on a floor station, with the cleaning roller removed;

[0229] Figure 2 Perspective view of the floor head of a floor cleaning machine, with the cover removed;

[0230] Figure 3 Shows according to Figure 1 Another view of the floor head of the floor cleaning device, with the cleaning roller inserted and the dirty fluid tank partially inserted;

[0231] Figure 4 Shows according to Figure 1 Another view of the floor head of the floor cleaning device, with the cleaning roller removed;

[0232] Figure 5 Shows the components of the floor head arranged relative to each other;

[0233] Figure 6 Shows according to Figure 1 Perspective top view of the floor head of the floor cleaning device, with the cover of the support for the rotary bearing device removed;

[0234] Figure 7 Shows the floor head of the floor cleaning device according to Figure 1 on the floor to be cleaned;

[0235] Figure 8 Shows the same view of the floor head as Figure 7 with several parts removed;

[0236] Figure 9 Shows a cross-sectional view along line 9-9 according to Figure 8 ;

[0237] Figure 10 Shows according to Figure 7 the bottom view of the floor head, with several parts removed;

[0238] Figure 11 Shows according to Figure 2 an enlarged view of area A, with the cover removed;

[0239] Figure 12 Shows according to Figure 11 the exploded view of the cover;

[0240] Figure 13 、 Figure 14 Shows different cross-sectional views of the part of the floor head on which the cover according to Figure 11 is fixed;

[0241] Figure 15 shows a cross-sectional view parallel to line 15-15 according to Figure 6 ;

[0242] Figure 16 shows an enlarged view of area B according to Figure 15 ; and

[0243] Figure 17 shows an exploded view of the floor head (with cleaning rollers) of the floor cleaning device according to Figure 1 , without a dirty fluid tank and with the cover for the rotary bearing device removed. DETAILED DESCRIPTION

[0244] In Figures 1 to 17 the illustrated embodiment of the floor cleaning device 20 according to the invention includes a floor head 22. A grip device 24 is held on the floor head 22. The grip device 24 is connected to the floor head 22 via a hinge device 26. This will be explained in more detail below. Via the hinge device 26, the grip device 24 can swing relative to the floor head 22 about (at least one) swing axis 28 (see Figure 6 ), and thus can also swing relative to the floor 30 to be cleaned (see Figure 7 ).

[0245] Relative to the operator, the grip device 24 has a proximal end 32 and a distal end 34. At or near the distal end 34, the grip device 24 is connected to the floor head 22 via the hinge device 26 so as to be able to swing about the swing axis 28.

[0246] The grip device 24 is configured in particular with respect to its length between the proximal end 32 and the distal end 34 such that an operator standing on the floor 30 to be cleaned can vertically guide the floor cleaning device 20 on the floor 30 to be cleaned. The swingability about the swing axis 28 enables matching according to the height of the operator.

[0247] For such guidance on the floor, a bow-shaped member 36 is arranged on the grip device 24 in the region of the proximal end 32, and the operator can grasp and guide (push and pull) the floor cleaning device 20 via the bow-shaped member during operation (when guiding on the floor 30 to be cleaned).

[0248] In one embodiment, the bow-shaped member 36 is configured in a closed-loop form.

[0249] In one embodiment, operating elements and / or display elements 38 are arranged on the grip device 24 and in particular on the bow-shaped member 36. The operating elements are, for example, on / off switches. For example, it is also possible to provide the delivery of cleaning liquid to the cleaning rollers (in particular by quantity). The display elements are, for example, displays regarding the on state or off state of the operator 20 or the amount of water delivered.

[0250] In one embodiment, the operating element and the display element are integrated.

[0251] The handle device 24 includes a rod 40 having a longitudinal axis 42, and an arcuate member 36 projects from the longitudinal axis and particularly points to the rear side 44 of the floor head 22.

[0252] In the case of the proper operation of the floor cleaning device 20 and being guided on the floor 30 to be cleaned, when the operator guides the floor cleaning device 20 on the floor 30 to be cleaned, relative to the forward direction 46 (see Figure 7 ) stands behind the rear side 44.

[0253] The swing axis 28 is oriented transversely and in particular perpendicularly to the longitudinal axis 42 of the rod 40.

[0254] A body 48 is arranged in the region of the proximal end 32 on the handle device 24. The body 48 can pivot with the handle device 24 about the swing axis 28. A cleaning liquid tank 50 is detachably held on the body 48. The cleaning liquid tank 50 is used to hold the cleaning liquid. The cleaning liquid can be pure water, or it can also be a mixture of pure water and a cleaning agent and in particular a surfactant cleaning agent.

[0255] In one embodiment, the cleaning liquid tank 50 has opposite cheeks 52a, 52b, and a recess 54 is formed between the cheeks. When the cleaning liquid tank 50 is arranged on the handle device 24 and is arranged on the rod 40 here, the rod 40 sinks into the recess 54 between the cheeks 52a, 52b.

[0256] In particular, the cleaning liquid tank 50 and the body 48 also do not project beyond the rod 40 towards the front side 56 of the floor head 22. The front side 56 of the floor head 22 faces away from the rear side 44.

[0257] In one embodiment, the combined height of the body 48 and the cleaning liquid tank 50 on the longitudinal axis 42 is at most 50% of the corresponding height of the rod 40 along the longitudinal axis 42 between the hinge device 26 and the arcuate member 36. In particular, the total height of the combination of the body 48 and the cleaning liquid tank 50 is at most 33% of the total length.

[0258] The body 48 and the cleaning liquid tank 50 arranged on the body 48 project beyond the rod 40 towards the rear side 44.

[0259] During the operation of the floor cleaning device 20, the handle device can swing about the swing axis 28 within a swing range 58 (see Figure 6)(swings) internally, and the swing range is between a minimum angle and a maximum angle. The minimum angle of the swing range 58 is defined in such a way that the body 48 or the cleaning liquid tank 50 abuts against the floor head 22. Alternatively, corresponding stop elements can be provided before the abutment.

[0260] A placement plane 60 is assigned to the floor head 22. This will still be explained in detail below. When the floor head 22 is placed on the flat floor 30 to be cleaned, the placement plane 60 coincides with the floor 30.

[0261] The minimum angle mentioned is relatively small with respect to the placement plane 60. This minimum angle with respect to the angle between the longitudinal axis 42 and the placement plane 60 is, for example, in the range between 0° and 10°.

[0262] The maximum angle of the swing range 58, as the angle between the placement plane 60 and the longitudinal axis 42 of the handle device 24, is in the range between 80° and 110°.

[0263] In a specific embodiment, this maximum angle is approximately 90°.

[0264] It is provided that the floor cleaning device 20 has a parking position 62 for the handle device 24. This parking position 62 is shown in Figure 1 shown.

[0265] In this parking position 62, the handle device 24 is at the maximum angle of the swing range 58 or outside this maximum angle. The handle device 24 is transverse to the floor head 22. In the parking position 62, this position of the handle device 24 relative to the floor head 22 is fixed, so that a certain force expenditure is required to pivot the handle device 24 out of the parking position 62.

[0266] For example, the parking position 62 can be fixed by force fit or form fit. In one embodiment, a magnet device is provided, in which the parking position of the handle device 24 relative to the floor head 22 is held by a corresponding magnetic force. For example, a form fit connection part such as a snap connection part or a similar connection part can also be provided.

[0267] In one embodiment, a floor station 64 is assigned to the floor cleaning device 20. The floor station 64 is used to store the floor cleaning device 20 outside the cleaning operation. The floor cleaning device 20 can be placed on this floor station with its floor head 22.

[0268] As will still be explained below, during the cleaning operation, (at least one) cleaning roller 66 is held on the floor head 22.

[0269] As will still be explained below, a receiving portion 68 for the cleaning roller 66 is provided on the floor head 22. After the cleaning operation is completed, the cleaning roller 66 can be placed on the receiving portion 68 in order to dry and store the cleaning roller.

[0270] This is shown in Figure 1 where the cleaning roller 66 is arranged on the respective receiving portion 68.

[0271] The floor head 22 has a first width direction 70 (see Figure 7 ). The first width direction 70 extends between the rear side 44 and the front side 56 of the floor head 22. The first width direction is at least substantially parallel to the forward direction 60.

[0272] Furthermore, the floor head 22 also has a second width direction 72, which is transverse to and in particular perpendicular to the first width direction 70.

[0273] The first width direction 70 and the second width direction 72 are in particular both parallel to the placement plane 60 of the floor cleaning device 20 (and thus of the floor head 22).

[0274] Furthermore, the floor head 22 also has a height direction 74. The height direction 74 is perpendicular to the first width direction 70 and perpendicular to the width direction 72. Furthermore, the height direction 74 is perpendicular to the placement plane 60.

[0275] In one embodiment, the floor head 22 (with respect to its envelope surface) has a generally cuboid-shaped configuration, which has extensions in the first width direction 70, the second width direction 72, and the height direction 74.

[0276] The floor head 22 has a first lateral side 76 and an opposite second lateral side 78. The lateral sides 76, 78 are oriented transversely to and in particular at least substantially perpendicular to the second width direction 72. The lateral sides 76, 78 are oriented at least substantially parallel to the first width direction 70.

[0277] The first lateral side 76 and the second lateral side 78 respectively (spaced apart from each other in the second width direction 72) connect the rear side 44 and the front side 56 of the floor head 22.

[0278] The floor head 22 includes a structural carrier 80 (see in particular Figure 9 ).

[0279] The structural carrier 80 ensures the structural stability of the floor head 22 and can absorb the corresponding forces and torques. The functional components of the floor cleaning device 20 are directly or indirectly fixed to the structural carrier 80.

[0280] The structural carrier 80 is configured such that it divides the floor head 22 into a lower part 82 and an upper part 84 with respect to the height direction 74. The lower part 82 is closer to the placement plane 60 than the upper part 84 here.

[0281] In one embodiment, the structural carrier 80 is configured in a plate-like shape and has extensions in the first width direction 70 and the second width direction 72.

[0282] The thickness of the structural carrier 80 in the height direction 74 is significantly smaller than the extensions in the first width direction 70 and the second width direction 72 (in particular, the thickness of the structural carrier 80 in the height direction 74 is 5 cm or less).

[0283] The plate-like shape is considered here to have a thickness in the height direction 74 that is significantly smaller than the corresponding widths in the first width direction 70 and the second width direction 72.

[0284] The structural carrier 80 includes a partition wall portion 86 that ensures a spatial separation between the upper part 84 and the lower part 82. The partition wall portion 86 as a spatial partition wall portion can be fixed to the structural carrier 80 here, or the structural carrier 80 itself can be configured to form the partition wall portion 86 as a partition wall portion between the upper part 84 and the lower part 82. The partition wall portion 86 also forms a "media partition wall portion" that provides fluid protection against the intrusion of liquid / dirty fluid into the upper part 84.

[0285] The partition wall portion 86 follows the shape of the structural carrier 80.

[0286] In one embodiment, the partition wall portion 86 and the structural carrier 80 together with the partition wall portion extend from the rear side 44 of the floor head 22 in the first width direction 70 up to the cleaning roller 66.

[0287] In the second width direction 72, the partition wall portion 86 and the structural carrier 80 extend in the second width direction 72 from the first side 76 to the second side 78.

[0288] It can be provided here that the structural carrier 80 or the partition wall portion 86 is provided with a decorative panel on the outside, such as a housing part.

[0289] Relative to the intermediate plane 88 of the partition wall portion 86 or the structural carrier 80, these decorative panels are oriented transversely and in particular perpendicular to the height direction 74. They are also at least approximately parallel to the placement plane 60 (see Figure 9 ).

[0290] A first chamber 90 is arranged on the lower part 82 of the floor head 22. A second chamber 92 is arranged on the upper part 84. Furthermore, on the upper part 84, a third chamber 94 is arranged adjacent to the second chamber 92 in a first width direction 70.

[0291] The second chamber 92 faces the rear side 44. The third chamber 94 faces the front side 56. Here, the third chamber 94 is at least partially located above the cleaning roller 66 with respect to the height direction 74.

[0292] The partition wall part 86 ensures that the first chamber 90 and the second chamber 92 are spatially separated from each other and provides fluid protection here, so as to largely prevent splashing water or the like from invading the second chamber 92. In principle, it is possible that the partition wall part 86 is provided with one or more (small) openings, which do not eliminate the splash protection, but for example, the invaded liquid can still be drained from the second chamber 92 to the first chamber 90 via these openings.

[0293] The first chamber 90 includes a bottom 96 (see, for example, Figure 15 ), which closes the first chamber 90 towards the placement plane 60.

[0294] In one embodiment, the bottom 96 is held on the structural carrier 80 via one or more walls or struts 98 (see Figure 17 ).

[0295] Alternatively or additionally, the bottom 96 can be part of the housing 100 of the floor head 22.

[0296] At least one support element 102 is arranged on the floor head 96 at a distance from the cleaning roller 66 (see Figure 15 ). The cleaning roller 66 is located in the region of the front side 56 of the floor head 22 or defines this front side. At least one support element 102 is located in the region of the rear side 44 of the floor head 22.

[0297] Via the cleaning roller 66 and at least one support element 102, the floor cleaning device 20 is supported on the floor 30 to be cleaned via the floor head 22 during the cleaning operation. At least one support element 102 and the cleaning roller 66 define the placement plane 60 of the floor head 22 on the floor 30 to be cleaned.

[0298] One or more (especially two) support rollers are provided as the support element 102. Alternatively, one or more skids can also be provided. In principle, it is also possible to form the support element 102 by arranging additional cleaning rollers at a distance from the cleaning roller 66.

[0299] A drive motor 104 for rotationally driving the cleaning roller 66 is arranged on the floor head 22. The drive motor 104 is an electric motor.

[0300] The electric motor is arranged in the first chamber 90 on the lower part 82 and is held or mounted on the structural carrier 80 in particular by the structural carrier.

[0301] In one embodiment, the drive motor 104 is arranged in the intermediate region between the front side 56 and the rear side 44 of the floor head 22 with respect to the first width direction 70. In particular, the center of gravity of the floor head 22 (excluding the grip device 24) lies on the drive motor 104.

[0302] The drive motor 104 has an extension in the second width direction 72, which extension is smaller than the extension of the floor head 22 in the second width direction 72 (see Figure 5 ). The drive motor 104 has a first end side 106 and an opposite second end side 108 (see Figure 5 ). The first end side 106 faces the first lateral side 106. The second end side 108 faces the second lateral side 78. The distance between the first lateral side 76 and the first end side 106 is greater than the distance between the second end side 108 and the second lateral side 78 here. A first intermediate plane 110 is assigned to the floor head 22 (see Figure 7 ). The first intermediate plane 110 is perpendicular to the first width direction 70. The second width direction 72 is parallel to the first intermediate plane 110. The first intermediate plane 110 is centered between the front side 56 and the rear side 44 of the floor head 22.

[0303] Furthermore, a second intermediate plane 112 is assigned to the floor head 22 ( Figure 7 ). The second intermediate plane 112 is perpendicular to the second width direction 72. The first width direction 70 is parallel to the second intermediate plane 112. The second intermediate plane 112 is centered between the first lateral side 76 and the second lateral side 78.

[0304] In one embodiment, the drive motor 104 lies on the first intermediate plane 110 (see Figure 5 ).

[0305] The floor head 22 is (virtually) divided by the second intermediate plane 112 into a first region 114a between the second intermediate plane 112 and the first lateral side 76, and a second region 114b between the second intermediate plane 112 and the second lateral side 78. The drive motor 104 is arranged in the second region 114b, and at most a smaller part 104 in the second width direction 72 is arranged within the first region 114a.

[0306] In one embodiment ( Figure 5 ), the first end side 106 touches the second intermediate plane 112 or is arranged spaced apart from the second intermediate plane 112 in the second region 114b.

[0307] The drive motor 104 includes a drive shaft having a drive shaft rotation axis 116 ( Figure 5 ). The drive shaft rotation axis 116 is parallel to the second width direction 72.

[0308] The drive shaft rotation axis 116 (in a fictitious extension) intersects the first side 76 and the second side 78.

[0309] In the region of the second end side 108, a torque transmission device 118 is arranged on the floor head 22. In particular, the torque transmission device 118 is assembled on the structural carrier 80 here.

[0310] The torque transmission device 118 is used to transmit the torque of the drive shaft of the drive motor 104 to the cleaning roller 66.

[0311] For example, the torque transmission device 118 is configured as a belt drive.

[0312] The corresponding torque of the drive motor 104 can be transmitted within a distance 120 via the torque transmission device 116.

[0313] The torque transmission device 118 is arranged on the floor head 22 along and in particular parallel to the second side 78.

[0314] It can also be provided here that the torque transmission device 118 ensures a reduction in speed, so that the cleaning roller 66 rotates at a speed lower than the speed of the drive shaft of the drive motor 104 during the operation of the floor cleaning device 20.

[0315] The torque transmission device 118 includes a driven element 122, and the corresponding torque is directly coupled to the cleaning roller 66 via the driven element to make it rotate.

[0316] The driven element 122 is positioned at a distance from the drive shaft of the drive motor 104.

[0317] In particular, the driven element 122 is arranged in the second region 114b and is preferably held by the wall of the structural carrier 80 or the side 78. The driven element 122 rotates about the rotation axis 124.

[0318] The torque transmission device 118 is arranged in the first chamber 90.

[0319] The driven element 122 is at least partially arranged within the first chamber 90 and extends into the receiving cylinder 126 for the cleaning roller 66.

[0320] The cleaning roller 66 includes a hollow cylindrical carrier 128 made especially of plastic material (for example, see Figure 17). A cleaning material 130 is arranged on the carrier as a facing. In one embodiment, the cleaning material 130 is a textile material, and in particular a microfiber material. In principle, the cleaning material can also be formed via a brush. In addition, for example, a combination of a textile material and a brush is also possible.

[0321] In one embodiment, a handle 129 is arranged on the hollow cylindrical carrier 128 (for example Figure 1 and Figure 7 ), and the operator can hold the cleaning roller 66 via the handle 129 and can also remove it without having to grasp the facing that may be soiled. The corresponding handle 129 is in particular integrated into the hollow cylindrical carrier 128 and is configured here such that a driving member (see below) for the rotary bearing device 132 "is integrated together", or such that the handle is retracted relative to the driving member.

[0322] The carrier 128 is configured on one side such that it can be inserted in a rotationally fixed manner onto the driven element 122 in the receiving cylinder 126.

[0323] The cleaning roller 66 is supported on the floor head 22 via a rotary bearing device 132 so as to be rotatable about a rotation axis 134. The rotary bearing device 132 includes a first rotary bearing 136 and a second rotary bearing 138 as a support. The first rotary bearing 136 is fixedly arranged on the floor head 22 and is arranged here on the first chamber 90. In particular, the first rotary bearing 136 is formed by the driven element 122.

[0324] As described above, the cleaning roller 66 can be inserted in a rotationally fixed manner onto the driven element 122 via the carrier 128.

[0325] Thus, the rotation axis 134 of the cleaning roller 66 coincides with the rotation axis 134 of the driven element 122.

[0326] The rotation axis 134 of the cleaning roller 66 is parallel to the second width direction 72 and transverse to and in particular perpendicular to the first width direction 70.

[0327] The forward direction 46 is perpendicular to the rotation axis 134 of the cleaning roller 66.

[0328] In particular, the rotation axis 134 is parallel to the placement plane 60.

[0329] The cleaning roller 66 has a first end side 140 and an opposite second end side 142. The cleaning roller 66 is held on the first rotary bearing 136 via its first end side 140. The cleaning roller 66 is held on the second rotary bearing 138 via its second end side 142. Thereby, the cleaning roller 66 is suspended on the rotary bearing device 132 at the end sides between the first rotary bearing 136 and the second rotary bearing 138.

[0330] The second rotary bearing 138 serving as a support is arranged on the cover 144 (see, for example, Figure 12 ), and can be removed from the floor head 22 as a whole.

[0331] The receiving cylinder 126 can be opened at the first side 76 via the cover 144 and is especially closed in a removable manner.

[0332] The second rotary bearing 138 is arranged on the cover 144 and includes a rolling bearing 146 and especially a ball bearing ( Figure 12 ). The cleaning roller 66 can be placed on the second rotary bearing 138 via its carrier 128 at the second end side 142. During operation, the cleaning roller 66 is rotated via the driven element 122, and the second rotary bearing 138 serving as a support is a driving bearing, which can enable rotation about the rotation axis 134 and support the cleaning roller 66 spaced apart from the first rotary bearing 136 (driven element 122) in the region of the first side 76 of the floor head 22.

[0333] The cover 144 is detachable and can be fixed to the floor head 22 as a whole in a removable manner. Alternatively, it can also be connected to the floor head 22 in a movable manner (non-removable or additionally removable). For this purpose, for example, a swing bearing or a moving bearing or a combination thereof is provided.

[0334] In one embodiment, a pin 148 is arranged on the cover 144. The pin 148 (when the cover 144 is arranged on the floor head 22) is arranged spaced apart from the second rotary bearing 138 and is arranged spaced apart from the rotation axis 134 of the cleaning roller 66. The pin 148 is used to absorb torque.

[0335] The pin 148 extends parallel to the rotation axis 134 or parallel to the second width direction 72.

[0336] A recess 150 is provided on the floor head 22, which recess is open towards the first side 76. The recess 150 is used to receive the pin 148, and the pin 148 can be pushed into the recess 150 in the direction 152 (see, for example, Figure 4 ).

[0337] The recess 150 is especially arranged in the region of the third chamber 94 above the receiving cylinder 126 with respect to the height direction 74.

[0338] The cover 144 can be fixed to the floor head 22 via a fixing device 154 (see, for example, Figure 12 ). For example, the fixing device 154 includes a spring-supported movable element 156 (see Figures 12 to 15 ), and the movable element can be connected to the floor head 22 outside the cover 144 in a detachable snap connection manner.

[0339] Figure 13 and Figure 14 The fixed state is shown in FIG. 5, in which the fixation is achieved by form-fitting via the respective movable element 156. In an alternative embodiment, a force-fitting connection is provided, such as a magnet connection.

[0340] When the cover 144 is fixed to the floor head 22, the cover forms part of the first flank 76 (see, for example, Figure 2 ).

[0341] Relative to the second intermediate plane 112, the floor head 22 is constructed asymmetrically in the region of the cleaning roller 66. The floor head 22 includes a bridging member 158 at the first chamber 90, which bridging member 158 houses the torque transmission device 118. The width of the bridging member 158 in the second width direction 72 is greater than the width of the cover 144 in the second width direction 72.

[0342] The driven element 122 projects from the bridging member 158 (see, for example, Figure 4 ).

[0343] When the cleaning roller 66 is placed on the floor head 22, the receiving cylinder 126 is bounded by the bridging member 158 towards the second flank 78. Towards the first flank 76, it is bounded by the cover 144.

[0344] Towards the rear side 44, it is bounded by the dirty fluid tank 160.

[0345] Towards the upper part, it is bounded by the wall of the third chamber 94.

[0346] The receiving cylinder 126 is open downwards towards the placement plane 60. The cleaning roller 66 projects from the receiving cylinder 126 in this direction so that floor cleaning can be achieved exactly.

[0347] In one embodiment, the receiving cylinder 126 is also open towards the front side 56. The cleaning roller 66 projects forward from this open area so that, for example, cleaning near the edge can be achieved.

[0348] The cleaning roller 66 can be removed from the receiving cylinder 126 in the opposite direction 162 to the direction 152 (see Figure 4 ), and thus removed from the floor head 22. In order to remove the cleaning roller 66 from the floor head 22, the movable element 156 is actuated so as to, in particular, release the form-fitting connection. Then the cover 144 can be removed (see Figure 4 ).

[0349] In principle, it is possible here to first remove the cover 144 and remove it from the floor head 22 and the cleaning roller 66. Then, the cleaning roller 66 can be removed from the receiving cylinder 126 in the opposite direction 162.

[0350] However, it is also possible to remove the cover 144 together with the cleaning roller 66 fixed thereto in the opposite direction 162, and thereby pull the cleaning roller 66 out of the receiving cylinder 126 in the opposite direction 162.

[0351] In principle, it is possible here to pull the cleaning roller 66 out of the receiving cylinder 126 only by grasping the cover 144, so that for example the operator does not have to grasp the contaminated cleaning roller 66.

[0352] The fixing of the cleaning roller 66 to the floor head 22 is realized accordingly. For this purpose, first (assuming there is a cover 144), the cleaning roller 66 is pushed into the receiving cylinder 126 and pushed until the cleaning roller 66 is pushed onto the driven element 122 at the first end side 140. Then, the cover is inserted in the direction 152, and thereby the second rotary bearing 138 is also pushed onto the cleaning roller 66.

[0353] Alternatively, the cleaning roller 66 can be pushed onto the second rotary bearing 138 of the cover 144, and then the cleaning roller 66 is moved into the receiving cylinder 126 with this combination, and then moved until the cover 144 is latched via the fixing device 154.

[0354] The cover 144 can be removed from the cleaning roller 66. The cover 144 is part of the floor head 22 and is not integrated into the cleaning roller 66. The cleaning roller 66 can be self-cleaned, for example, in a cleaning machine (after being removed from the cover 144).

[0355] In the first chamber 90, a drive motor 104 and a torque transmission device 118 are arranged. The first chamber 90 also houses the cleaning roller 66. The first chamber 90 is closed relative to the placement plane 60 via the bottom 96. Due to the positioning of the cleaning roller 66, the first chamber is open towards the front side 56.

[0356] The first chamber 90 has a receiving chamber 164 for the dirty fluid tank 160. This will be explained in more detail below.

[0357] In one embodiment, a partition wall 168 is arranged between the receiving chamber 164 for the dirty fluid tank 160 and the receiving space 166 in which the drive motor 104 is arranged. The partition wall is oriented at least approximately parallel to the height direction 74 and is oriented transversely and in particular perpendicularly to the partition portion 86.

[0358] In principle, at least the receiving chamber 164 will be loaded with dirt, dirty fluid or liquid.

[0359] It is provided that the drive motor 104 and also the torque transmission device 108 are arranged in a protected manner in the first chamber 90.

[0360] In one embodiment, the bottom 96 (see Figure 17 ) is configured such that it is open in the region of the dirty fluid tank 160 when the dirty fluid tank 160 is placed on the floor head 22.

[0361] The second chamber 92 has a receiving space 170 which is sealed in a fluid-tight manner upwards (away from the partition wall portion 86) by a first cover 172. The first cover 172 is permanently connected to the floor head 22. It is not provided that the cover 172 is opened during normal operation of the floor cleaning device 20.

[0362] In the closed chamber 90, components of the cleaning device 10 that are sensitive to liquid and dirty fluid are arranged.

[0363] In particular, electronic components are arranged in the second chamber 92. In particular, these electronic components are all provided with fluid-tight encapsulations. The circuit 174 is located in the second chamber 92, and the circuit particularly includes a control device.

[0364] Furthermore, valves such as the solenoid valve 176 (see Figure 17 ) are also provided in the second chamber 92. Alternatively, a pump can be provided.

[0365] The floor cleaning device 20 includes a conveying device 178 ( Figure 8 shows a partial area), and the cleaning liquid can be conveyed from the cleaning liquid tank 50 to the nozzle device 180 on the floor head via the conveying device. In particular, the nozzle device 180 is arranged and configured such that the cleaning liquid can be conveyed to the cleaning material 130 of the cleaning roller 66 via the nozzle device. Thereby, the cleaning material can be wetted. The wetted material in turn acts on the floor 30 to be cleaned, and the dirt can be loosened better.

[0366] In particular, the conveying device 178 includes one or more lines from the cleaning liquid tank 50 to the nozzle device 180.

[0367] The transportation of the cleaning liquid from the cleaning liquid tank 50 to the nozzle device 180 is driven by gravity. Alternatively, the above-mentioned pump or a similar device can also be provided.

[0368] The solenoid valve 176 is used to control or release the conveyance of the cleaning liquid to the nozzle device 180.

[0369] The electronic part of the solenoid valve 176 is arranged in the second chamber 92 and can then act on the conveying device 178 outside the first chamber 92 accordingly.

[0370] In one embodiment, it is provided that the dividing wall portion 86 or the downward portion 82 of the structural carrier 80 has a first recess or bulge or depression 182. Thereby, the accommodation volume of the accommodation space 170 is increased.

[0371] The circuit 174 is arranged in the first recess 182.

[0372] In one embodiment, a second recess 184 is provided, and an accommodation portion 186 for the battery device is arranged on the second recess.

[0373] Furthermore, a third recess 188 is provided, and the magnet valve 176 is arranged in the third recess (for this, see Figure 10 ).

[0374] An opening 190 is positioned on the first recess 182, and a cable (with a corresponding sealing device) passes through the opening and leads to the drive motor 104.

[0375] On the dividing wall portion 86, another bulge 192 is arranged (see Figure 8 ), and the bulge increases the accommodation volume of the first chamber 90. The bulge 192 points upward to the upper portion 84 and is arranged in the region of the drive motor 104 so that the drive motor can be installed in a space-saving manner.

[0376] In principle, a corresponding bulge can also be provided for the torque transmission device 118.

[0377] Through the recesses 182, 184, 188, 192, the space on the floor head 22 can be optimally utilized so that the overall height of the floor head 22 in the height direction 74 can be kept low and thus good travelability under furniture or the like can be achieved.

[0378] The second chamber 92 is spatially separated from the third chamber 94 by a dividing wall portion 194 (see plus Figure 15 and Figure 17 ). The dividing wall portion 194 is positioned on the dividing wall portion 86 or is a part of the dividing wall portion. Thereby, in terms of fluid protection, there is a first region formed by the dividing wall portion 86, and the first region is oriented transversely to the height direction 74. There is a second region having a wall portion 194, and the second region is at least substantially parallel to the height direction 74.

[0379] An accommodation portion 186 for the battery device 196 is arranged on the second chamber 92, and the accommodation portion 186 for the battery device 196 is open toward the rear side 44. The battery device 196 can be inserted into or removed from the accommodation portion 186 via the rear side 44. The accommodation portion 186 extends parallel to the first width direction 70.

[0380] The insertion or removal direction 198 of the battery device 196 on the receiving part 186 is parallel to the first width direction 70 (or at most at an acute angle of 30° to this first width direction). It is transverse to and in particular perpendicular to the second width direction 70.

[0381] The insertion / removal direction 198 is transverse to and in particular perpendicular to the axis of rotation 134.

[0382] This insertion / removal direction is transverse to and in particular perpendicular to the direction 152 / opposite direction 162 for inserting / removing the cleaning roller 66 from / to the floor head 22.

[0383] The receiving part 186 with the battery device 196 is positioned in the first region 114a (see Figure 5 ), and is thus arranged on a different side of the drive motor 104 on the floor head 22 relative to the second intermediate plane 112. In addition, the opening 200 of the receiving part 186 faces the rear side 44 and thus away from the cleaning roller 66. This provides splash water protection.

[0384] In one embodiment, the receiving part 186 is constructed in the region of the rear side 44 such that the operator can reach the battery device 196 in order to be able to insert or remove the battery device in the insertion / removal direction 198 and can directly access the battery device.

[0385] The second chamber 92 is constructed such that it (on the lower part 82) extends beyond the receiving chamber 164 for the dirty fluid tank 160. In particular, the receiving part 186 for the battery device 196 extends beyond the receiving chamber 164 (see also for example Figure 5 ).

[0386] Away from the opening 200, the receiving part 186 has an end 202. If the dirty fluid tank 160 is arranged on the floor head 22, a partial region of the receiving part 186 (and thus also the battery device 196) extends beyond the dirty fluid tank 160; the end 202 falls onto the dirty fluid tank 160 in its projection in the direction of the placement plane 60 in the height direction 74.

[0387] This results in an optimized use of space.

[0388] In the floor cleaning device 20, when the battery device 196 is inserted on the receiving part 186, the battery device is positioned at the upper part 84 on the floor head 22 and is thus (relative to the height direction 74) in particular positioned above the dirty fluid tank 160.

[0389] The first lid 172 that closes the second chamber 92 forms the upper side of the floor head 22 and has a recess 204 in the form of a depression. The recess 204 lies in the second intermediate plane 112 and provides a recessed area through the recess 204.

[0390] The receiving part 186 for the battery device 196 is located beside this recess 204.

[0391] The receiving part 186 for the battery device 196 is closer to the first side 76 here than to the second side 78.

[0392] At the recess 204 and especially therein is located a hinge device 26 which serves as a holder for the grip device 24 (see for example Figure 6 ).

[0393] By having the recess 204 as a recessed area, a small maximum swing angle of the swing range 58 of the grip device 24 relative to the floor head 22 is obtained. Thereby, good travelability below is obtained again.

[0394] Furthermore, a holder 206 for the cleaning roller 66 is also mounted on the recess 204, and the cleaning roller can be inserted into the holder via its carrier 128 for storage or drying (see Figure 1 ).

[0395] In particular, the holder 206 is arranged closer to the rear side 44 than the hinge device 26.

[0396] In one embodiment, the hinge device is at least approximately (with a spacing of at most 5 cm) from the first intermediate plane 110.

[0397] In one embodiment, the recess 204 opens towards the rear side 44 (see Figure 6 ).

[0398] Thereby, for example, water or the like accumulating in the recess 204 can be drained backwards (towards the rear side 44).

[0399] The third chamber 94 is closed by a second lid 208. This lid 208 (see Figure 2 ) is held on the floor head 22 in a removable manner (by the operator).

[0400] In one embodiment, a hairpin device 214 is arranged in the third chamber 94 and is used for receiving hair.

[0401] The hairpin device 214 is positioned in the third chamber 94 in a removable manner.

[0402] For cleaning the floor head 22, the operator can remove the second lid 208 and take out the hairpin device 214 in order to clean this floor head.

[0403] The third chamber 94 is positioned above the cleaning roller 66 in a partial region 216 with respect to the height direction 74, such that the hairpin device 214 can act on the cleaning roller 66.

[0404] The receiving chamber 164 for the dirty fluid tank 160 is arranged at or within the first chamber 90 on the lower part 82 of the floor head 22. The receiving chamber is arranged directly adjacent to the receiving cylinder 126 of the cleaning roller 66 in the first width direction 70. The dirty fluid is stripped from the cleaning roller 66 (from its cleaning material 130) via a scraping device 210 having at least one scraping strip 212. The dirty fluid can be directly coupled into the dirty fluid tank via a corresponding porting device 218 on the dirty fluid tank 160.

[0405] In one embodiment, it is provided that the scraping device 210 is mounted on the hairpin device 214 and is positioned thereat the porting device 218 (see Figure 3 ).

[0406] The dirty fluid tank 160 extends in a first tank width direction 220 and a second tank width direction 222, the second tank width direction 222 being transverse and especially perpendicular to the first tank width direction 220 (see Figure 10 ). When the dirty fluid tank 160 is mounted on the floor head 22, the first tank width direction 220 is parallel to the first width direction 70, and the second tank width direction 222 is parallel to the second width direction 72. Thus, hereinafter, when the dirty fluid tank is mounted on the floor head 22, the directions refer to the first width directions 70, 72.

[0407] The dirty fluid tank 160 has a first region 224 and a second region 226 (e.g. see Figure 5 ).

[0408] The porting device 218 is located at the second region 226, and the dirty fluid is coupled from the cleaning roller 66 into the dirty fluid tank 160 via the second region 226.

[0409] The second region 226 of the dirty fluid tank 160 has a greater width in the second width direction 72 than the first region 224 of the dirty fluid tank 160. The width of the second region 226 in the second width direction 72 is substantially equivalent to the corresponding length of the cleaning roller 66 along the rotation axis 134.

[0410] The dirty fluid tank 160 has an L-shaped configuration (see Figure 5 ), which configuration has a first arm 228 and a second arm 230. The first arm 228 is formed by the second region 226. The second arm 230 is formed by the first region 224. The second arm 230 is transverse and especially perpendicular to the first arm 228.

[0411] There is a free space 232 between the second region 226 and the first region 224.

[0412] When the dirty fluid tank 160 is positioned in the receiving chamber 164 of the floor head 22, the free space 232 is bounded in the first width direction 70 by the second region 226 and in the second width direction 72 by the first region 224.

[0413] The free space 232 is part of the space in the first chamber 90, which is no longer part of the receiving chamber 164 and is located in particular behind the partition wall 168 (see Figure 10 ). The drive motor 104 is positioned in the free space 232.

[0414] The first end side 106 of the drive motor 104 (when the dirty fluid tank 160 is positioned on the floor head 22) faces the first region 224 of the dirty fluid tank 160. A partial region of the second region 226 (relative to the first width direction 70) is arranged between the drive motor 104 and the cleaning roller 66.

[0415] The first region 224 and the second region 226 of the dirty fluid tank 160 are connected to each other and are in particular integrally connected to each other and form a common receiving volume. The first region 224 and the second region 226 are geometric regions on the dirty fluid tank 160.

[0416] Via the second region 226, the dirty fluid tank 160 has in part finger-like elements which, when positioned in the receiving chamber 164, can sink into the space between the drive motor 104 and the cleaning roller 66 (see Figure 10 ).

[0417] This results in an optimized space utilization and enables the coupling-in of the dirty fluid on the cleaning roller into the through-port device 218 over a relatively large length range at the second region 226.

[0418] Furthermore, this also results in a higher receiving volume for the dirty fluid in the dirty fluid tank 160 with optimized space utilization.

[0419] The dirty fluid tank 160 has a basin region 234 and a lid region 236 (see Figure 15 ).

[0420] When the dirty fluid tank 160 is removed from the floor head 22, the lid region 236 can be removed from the basin region 234.

[0421] The basin region 234 has the above-described L-shape with the first region 224 and the second region 226.

[0422] The lid region 236 can be formed as a one-piece or multi-piece structure. For example, in a one-piece configuration, the lid region follows the L-shape of the bottom region 234 and can be removed as a whole.

[0423] For example, in a multi-piece configuration, the lid region includes a part fixedly connected to the bottom region 234 and another removable part.

[0424] With the removable part, the dirty fluid can be removed from the dirty fluid tank via the lid region 236, and the dirty fluid tank 160 can be cleaned.

[0425] In one embodiment, the first region 224 has a width in the first width direction 70 (up to the second region 226), which is greater than the width of the second region 226 in the first width direction 70 (see, for example Figure 10 ). In particular, the maximum width of the dirty fluid tank 160 in the second width direction 72 corresponds to the maximum width of the second region 226 in the second width direction 72.

[0426] The maximum width of the dirty fluid tank in the first width direction 70 corresponds to the sum of the widths of the first region 224 and the second region 226 in the first width direction 70.

[0427] In particular, it is provided that the width of the second region 226 in the second width direction 72 is at least 60%, especially 70%, and preferably at least 80% of the total width of the floor head 22 in the second width direction 72. This results in a higher accommodation volume for the dirty fluid.

[0428] Furthermore, it is advantageously provided that the width of the second region 226 in the second width direction 72 is at least 1.5 times, especially at least 2 times, and especially at least 2.5 times the width of the first region 224 in the second width direction 72. This results in a compact structure of the floor head 22 and a higher accommodation volume of the dirty fluid tank in the case of a space-saving structure.

[0429] When the dirty fluid tank 160 is held in the receiving chamber 164 on the floor head 22, the drive motor 104 is positioned between the torque transmission device 118 and the first region 224 of the dirty fluid tank 160.

[0430] The free space 232 has a shape that is at least approximately hollow cuboid.

[0431] The receiving part 186 for the battery device 196 extends beyond the first region 224 of the dirty fluid tank 160.

[0432] The length of the access device 218 in the second width direction 72 is preferably at least 80% of the length of the cleaning roller 66 in the second width direction 72 and preferably extends over its entire length in order to enable optimized coupling-in.

[0433] A diagonal plane 250 (see Figure 5 ) can be assigned to the floor head 22. This diagonal plane 250 is a diagonal plane with respect to the first intermediate plane 110 and the second intermediate plane 112; the diagonal plane 250 forms an angle of 45° with the above-mentioned intermediate planes 110 and 112 respectively (see Figure 5 ).

[0434] The diagonal plane 250 passes through the intersection line of the above-mentioned intermediate planes 110, 112.

[0435] In one embodiment (see Figure 5 ), the receiving part 186 for the battery device 196 and the battery device 196 are located on this diagonal plane 250. In addition, the region of the torque transmission device 118 in which the driven element 122 is arranged is located on this diagonal plane 250.

[0436] In addition, the drive motor 104 is located on this diagonal plane 250. Thus, an optimized weight distribution on the floor head 22 is obtained.

[0437] The receiving chamber 184 is configured such that the dirty fluid tank 160 can be pushed into and removed from the receiving chamber in a drawer-like manner and is thus also held.

[0438] The dirty fluid tank 160 can be removed or inserted at the first side 76. The receiving chamber 164 has an opening 238 for the dirty fluid tank 160 towards the first side 76 (for example see Figure 17 or Figure 3 ).

[0439] The insertion / removal direction 240 of the dirty fluid tank 160 in the receiving chamber 164 and thus on the floor head 22 (for example see Figure 3 ) is oriented transversely to the first width direction and in particular perpendicular to the first width direction. The insertion / removal direction 240 is oriented at least approximately parallel to the second width direction 72.

[0440] It is positioned transversely to and in particular perpendicular to the insertion / removal direction 198 for the battery device 196.

[0441] The insertion / removal direction 240 is at least approximately parallel to the direction 152 / opposite direction 162 in which the cleaning roller is inserted or removed on the receiving cylinder 126.

[0442] The cleaning roller 66 and the dirty fluid tank 160 can be removed towards the same first side 76.

[0443] It is provided that the dirty fluid tank 160 and the cleaning roller 66 can be inserted and removed independently of each other. Thus, for example, it is not necessary to first remove the cleaning roller 66 in order to remove the dirty fluid tank, or vice versa.

[0444] A housing element 242 is arranged on the dirty fluid tank 160. When the dirty fluid tank is inserted onto the housing of the floor head 22 on the first side 76, the housing element ensures a flush transition.

[0445] In one embodiment, a handle element 244 is arranged on the housing element 242 so that the operator can reach it.

[0446] Furthermore, a fixing device 246 is also arranged on the housing element 242. Via this fixing device, the dirty fluid tank can be fixed to the receiving chamber 164 relative to the insertion / removal direction 240. For example, the fixing device 246 is configured as a form-fitting device or a snap connection.

[0447] In one embodiment, a cleaning device 248 is arranged on the dirty fluid tank 160. The cleaning device is particularly arranged in the second region 226 and extends along the second width direction 72.

[0448] The task of the cleaning device 248 is to convey the coarse dirt on the floor 30 to be cleaned to the cleaning roller 66, so that the coarse dirt can be entrained and coupled into the dirty fluid tank 160.

[0449] The receiving chamber 164 for the dirty fluid tank 160 is at least partially open towards the placement plane 60. Thus, the cleaning device 248 in the dirty fluid tank 160 can act on the surface of the floor 30 to be cleaned.

[0450] In one embodiment, it is provided that the dirty fluid tank is held floating in the receiving chamber 164.

[0451] The floor cleaning device 20 operates as follows:

[0452] For the cleaning operation of the floor cleaning device 20, the floor cleaning device is removed from the floor station 64. In Figure 1 In the state shown, the cover 144 is removed, the cleaning roller 66 is placed in the receiving cylinder 126, and the cover 144 is closed. This is achieved by first placing the cleaning roller 46 in the receiving cylinder 126, then placing the cover 144 on the cleaning roller 66 and the floor head 22, or first placing the cleaning roller 66 on the second rotating bearing 128 (support) on the cover 144, and then pushing it in and ensuring that the cover 144 is fixed to the floor head.

[0453] When the dirty fluid tank is inserted, the cleaning process for the floor 30 to be cleaned can be performed.

[0454] The operator can accordingly adjust via the swinging position of the handle device 24 on the hinge device 26.

[0455] The cleaning liquid is conveyed from the cleaning liquid tank 50 to the nozzle device 180 via the guiding device 178 and wets the cleaning roller 66. Alternatively or additionally, the floor 30 to be cleaned can also be directly wetted.

[0456] The drive motor is supplied with electrical energy via the battery device 196. The drive motor drives the cleaning roller 66 to rotate about the rotation axis 134 via the driven element 122. This rotation mechanically acts on the floor 30 to be cleaned and loosens the dirt. The dirt is entrained and stripped via the scraping device 210 and coupled into the dirty fluid tank 160 via the through-port device 218. The hair is received via the hairpin device 214.

[0457] When the dirty fluid tank 160 is full (this situation is especially shown on the floor cleaning device 20) or when the cleaning process is finished, the dirty fluid tank 160 is removed and emptied and, if necessary, cleaned.

[0458] By opening the second cover 208, the hairpin device 214 (with the scraping device 210) can be accessed and removed and cleaned.

[0459] The cleaning roller 66 can be removed and inserted into the holder 206 when the floor cleaning device 20 is parked at the floor station 64.

[0460] The handle device 24 is placed in the parking position 62.

[0461] The floor cleaning device 20 is compact. The floor head is constructed in a space-saving manner. The L-shape of the dirty fluid tank 160 enables optimized space utilization while having a large accommodation volume, and in particular, the dirty fluid from the cleaning roller 66 can be coupled into the dirty fluid tank via the through-port device 218 without a blower.

[0462] Torque balance is achieved by arranging the drive motor 104 and the battery device 196 on one side and the other side of the second intermediate plane 112. Optimized splash protection is achieved by arranging the battery device above the accommodation part 186 (due to being arranged away from the cleaning roller 66) and due to being arranged on the partition wall part 86.

[0463] The partition wall part 86 enables a simple structure and optimizes the protection of moisture-sensitive areas such as the circuit 174 and the solenoid valve 176.

[0464] The cleaning roller 66 is supported on both sides via rotary bearing devices 132, i.e., via a first rotary bearing 136 and a second rotary bearing 138 spaced apart from each other in the second width direction 72. Thereby, the cleaning roller 66 can be configured with a relatively large length, and an optimized cleaning effect is obtained.

[0465] The second rotary bearing 138 serving as a support for the first rotary bearing 136 is arranged on the removable cover 144. Thereby, simple removability and insertability of the cleaning roller 66 are obtained.

[0466] The cover 144 is part of the floor head 22, and the cleaning roller 66 can be removed from the floor head.

[0467] The cleaning roller 66 (without the cover 144) can be cleaned especially in a cleaning machine.

[0468] The embodiments of the floor cleaning device 20 described above are manually guided, and in particular are manually guided by an operator standing by.

[0469] The floor cleaning device 20 described in this embodiment is blowerless. In principle, it is also possible to provide a blower device for sucking on the cleaning roller 66 (and, if necessary, also on the floor 30 to be cleaned). The blower device can be arranged on the handle device 24 or can be arranged on the floor head 22.

[0470] It is possible that the solution according to the invention (rotary bearing device having a first rotary bearing and a support, L-shaped dirty fluid tank, chamber structure having a partition part with splash protection, and other combinations or individual features) is also used in self-propelled and self-steering floor cleaning devices ("cleaning robots").

[0471] Here, the construction principle is the same as described above, except that there is no handle device 24, and corresponding sensor elements and devices for self-propulsion and self-steering still exist.

[0472] The self-propelled and self-steering floor cleaning device can be configured without a blower here, or a blower device can also be provided, and then the blower device is naturally arranged on the corresponding floor head.

[0473] List of reference signs

[0474] 20 Floor cleaning device

[0475] 22 Floor head

[0476] 24 Handle device

[0477] 26 Hinge device

[0478] 28 Swinging axis

[0479] Floor to be cleaned

[0480] Proximal end

[0481] Distal end

[0482] Bow

[0483] Operating element / display element

[0484] Rod

[0485] Longitudinal axis

[0486] Rear side

[0487] Forward direction

[0488] Machine body

[0489] Cleaning liquid tank

[0490] Cheek 52a

[0491] Cheek 52b

[0492] Recess

[0493] Front side

[0494] Swing range

[0495] Placement plane

[0496] Parking position

[0497] Floor station

[0498] Cleaning roller

[0499] Receiving part

[0500] First width direction

[0501] Second width direction

[0502] Height direction

[0503] First side

[0504] Second side

[0505] Structural carrier

[0506] Lower part

[0507] Upper part

[0508] Partition wall part

[0509] Intermediate plane

[0510] First chamber

[0511] 92 The second chamber

[0512] 94 The third chamber

[0513] 96 The bottom

[0514] 98 The wall

[0515] 100 The housing

[0516] 102 The support element

[0517] 104 The drive motor

[0518] 106 The first end side

[0519] 108 The second end side

[0520] 110 The first intermediate plane

[0521] 112 The second intermediate plane

[0522] 114a The first region

[0523] 114b The second region

[0524] 116 The drive shaft rotation axis

[0525] 118 The torque transmission device

[0526] 120 The distance

[0527] 122 The driven element

[0528] 124 The rotation axis

[0529] 126 The receiving cylinder

[0530] 128 The carrier

[0531] 129 The handle

[0532] 130 The cleaning material

[0533] 132 The rotating bearing device

[0534] 134 The rotation axis

[0535] 136 The first rotating bearing

[0536] 138 The second rotating bearing

[0537] 140 The first end side

[0538] 142 The second end side

[0539] 144 The cover

[0540] 146 The rolling bearing

[0541] 148 pin

[0542] 150 recess

[0543] 152 direction

[0544] 154 fixing device

[0545] 156 movable element

[0546] 158 jumper

[0547] 160 dirty fluid tank

[0548] 162 opposite direction

[0549] 164 receiving chamber

[0550] 166 receiving space

[0551] 168 partition wall

[0552] 170 receiving space

[0553] 172 first cover

[0554] 174 circuit

[0555] 176 solenoid valve

[0556] 178 conveying device

[0557] 180 nozzle device

[0558] 182 first recess

[0559] 184 second recess

[0560] 186 receiving part

[0561] 188 third recess

[0562] 190 opening

[0563] 192 bulging part

[0564] 194 wall part

[0565] 196 battery device

[0566] 198 insertion / removal direction

[0567] 200 opening

[0568] 202 end

[0569] 204 recess

[0570] 206 retainer

[0571] 208 second cover

[0572] 210 Scraper device

[0573] 212 Scraper bar

[0574] 214 Hairpin device

[0575] 216 Partial area

[0576] 218 Port device

[0577] 220 First can width direction

[0578] 222 Second can width direction

[0579] 224 First area

[0580] 226 Second area

[0581] 228 First arm

[0582] 230 Second arm

[0583] 232 Free space

[0584] 234 Basin area

[0585] 236 Lid area

[0586] 238 Opening

[0587] 240 Insertion / removal direction

[0588] 242 Housing element

[0589] 244 Handle element

[0590] 246 Fixing device

[0591] 248 Cleaning device

[0592] 250 Diagonal plane

Claims

1. A floor cleaning device, the floor cleaning device comprising a floor head (22), at least one cleaning roller (66) rotatable about a rotation axis (134), and a drive motor (104) for the at least one cleaning roller (66), characterized in that, The floor head (22) has a first chamber (90) and a second chamber (92), and is provided with a partition wall portion (86) that spatially separates the first chamber (90) and the second chamber (92) from each other. The drive motor (104) is arranged inside the first chamber (90), and the at least one cleaning roller (66) is arranged at or in the first chamber (90), and electronic components (174) and / or at least one valve (176) and / or a pump and / or a battery device (196) are arranged in the second chamber (92).

2. The floor cleaning device according to claim 1, wherein, During operation of the floor cleaning device, the internal space of the first chamber (90) is at least partially loaded with dirt and / or liquid, while the second chamber (92) is protected by the partition wall portion (86) from intrusion of dirt and liquid.

3. The floor cleaning device according to claim 1 or 2, characterized in that, The floor head (22) is assigned a placement plane (60) for placement on the floor (30) to be cleaned, and the placement plane has at least one of the following features: - The partition wall portion (86) between the first chamber (90) and the second chamber (92) is at least partially oriented transversely to the normal line (74) of the placement plane (60); - The second chamber (92) is arranged above the first chamber (90) with reference to the height direction (74) perpendicular to the placement plane (60).

4. The floor cleaning device according to claim 3, characterized in that It has at least one of the following features: - The second chamber (92) is closed; - The first chamber (90) is at least partially open, especially towards the at least one cleaning roller (66).

5. The floor cleaning device according to any one of the preceding claims, characterized in that It has at least one of the following features: - The first chamber (90) includes a receiving chamber (164) for the dirty fluid tank (160); - The first chamber (90) includes a receiving cylinder (126) for the at least one cleaning roller (66), and / or the receiving cylinder (126) is arranged at the first chamber (90).

6. The floor cleaning device according to any one of the preceding claims, characterized in that The second chamber (92) is closed by a first cover (172).

7. The floor cleaning device according to claim 6, characterized in that It has at least one of the following features: - The first cover (172) is permanently fixedly connected to the floor head (22); - The first cover (172) closes the second chamber (92) upwards with reference to the height direction (74); - The first cover (172) at least partially forms the upper side of the floor head (22); - The first cover (172) is configured to be multi-piece or has multiple regions.

8. The floor cleaning device according to any one of the preceding claims, characterized in that, The second chamber (92) and / or the first cover (172) of the second chamber (92) have a recess (204) or a bulging portion or a depression, and the recess or the bulging portion or the depression has a retracted area relative to the upper side of the floor head (22).

9. The floor cleaning device according to claim 8, characterized in that, At least one of the following is positioned at the retracted area: - At least one holder (206) for the cleaning roller (66); - A holder (206) for the grip device (24); - A hinge device (26) for the grip device (24), the grip device (24) being held via the hinge device so as to be swingable relative to the floor head (22).

10. The floor cleaning device according to claim 8 or 9, characterized in that, The floor head (22) has a first width direction (70) transverse to the rotation axis (134) and a second width direction (72) parallel to the rotation axis (134), and the floor cleaning device has at least one of the following features: - The recess (204) or bulge or depression extends along the first width direction (70) and has an extension in the second width direction (72); - The recess (204) or bulge or depression opens towards the front side (56) and / or the rear side (44) of the floor head (22); - A receiving portion (186) for the battery device (196) and / or the battery device (196) is arranged beside the recess (204) or bulge or depression with reference to the first width direction (70); - The at least one cleaning roller (66) is arranged in front of the recess (204) or bulge or depression with reference to the first width direction (70); - A scraping device (210) for scraping dirty fluid from the at least one cleaning roller (66) and / or a hairpin device (214) for receiving hair are arranged in front of the recess (204) or bulge or depression with reference to the first width direction (70); - A third chamber (94) is arranged in front of the recess (204) or bulge or depression with reference to the first width direction (70).

11. The floor cleaning device according to any one of the preceding claims, characterized in that, A third chamber (94) is arranged on the floor head (22), wherein the second chamber (92) is fluid-sealedly closed relative to the third chamber (94) by the partition wall portion (86) or another wall portion (194).

12. The floor cleaning device according to claim 11, wherein Having at least one of the following features: - The third chamber (94) is arranged in front of the second chamber (92) in the direction towards the at least one cleaning roller (66); - The third chamber (94) is arranged above at least one partial area of the at least one cleaning roller (66) with reference to the height direction (74); - A scraping device (210) for scraping dirty fluid from the at least one cleaning roller (66) and / or a hairpin device (214) are particularly removably positioned at the third chamber (94); - The third chamber (94) is closed by a removable second cover (208), and the second cover particularly has at least one of the following features: - The second cover (208) at least partially forms the upper side of the floor head (22); - The second cover (208) is flush with the first cover (172) of the second chamber (92); - The second cover (172) can be removed from the floor head (22) in a direction transverse to the rotation axis (134).

13. The floor cleaning device according to any one of the preceding claims, characterized in that, The partition wall portion (86) has a first region that separates the first chamber (90) from the second chamber (92) in a splash-proof manner.

14. The floor cleaning device according to claim 13, wherein, The partition wall part (86) has a second region or is provided with an additional partition wall part (194) that fluid-tightly separates the second chamber (92) from the third chamber (94), wherein in particular the second region or the additional partition wall part (194) is oriented transversely and in particular perpendicularly to the first region.

15. The floor cleaning device according to claim 13 or 14, characterized in that, The first region forms the bottom for the third chamber (94).

16. The floor cleaning device according to any one of the preceding claims, characterized in that The floor head (22) includes a structural carrier (80) on which the partition wall part (86) is formed or arranged, wherein the structural carrier (80) holds at least one of the following: - The drive motor (104); - A torque transmission device (118) that is used to transmit the torque of the drive motor (104) to the at least one cleaning roller (66); - A dirty fluid tank (160) that can in particular be removed from the floor head (22); - A battery device (196) or a receiving part (186) for the battery device (196); - A valve (176) and / or a pump; - Electronic components (174); - A grip device (24); - At least a part of the rotational bearing device (132) for the at least one cleaning roller (66); - A housing (100); - A support device for supporting the floor head (22) on the floor (30) to be cleaned; - A blower device.

17. The floor cleaning device according to claim 16, characterized in that, The structural carrier (80) is configured as a carrier plate or includes a carrier plate.

18. The floor cleaning device according to any one of the preceding claims, characterized in that, The partition wall part (86) has at least one recess (182; 184; 188) or at least one bulge or at least one depression on which functional components (174; 176) are arranged.

19. The floor cleaning device according to claim 18, characterized in that, The at least one recess (182; 184; 188) or at least one bulge or at least one depression is located outside the region where the dirty fluid tank (160) is located.

20. The floor cleaning device according to claim 18 or 19, characterized in that Has at least one of the following features: - The partition wall part (86) has a first recess (182) or a first bulge or a first depression, and at least a part of the electronic components (174) is arranged on the first recess or the first bulge or the first depression; - The partition wall part (86) has a second recess (184) or a second bulge or a second depression, and the battery device (196) and / or the receiving part (186) for the battery device (196) is arranged on the second recess or the second bulge or the second depression; - The partition wall part (86) has a third recess (188) or a third bulge or a third depression, and the solenoid valve (176) is arranged on the third recess or the third bulge or the third depression.

21. The floor cleaning device according to any one of claims 18 to 20, characterized in that Has at least one of the following features: - The at least one recess (186; 184; 188) or at least one bulge or at least one depression points to the first chamber (90) and increases the accommodation volume of the second chamber (92).

22. The floor cleaning device according to claim 20 or 21, characterized in that, The dirty fluid tank (160) is positioned between the first recess (182) or the first bulge or the first depression and the at least one cleaning roller (66) and / or between the second recess (184) or the second bulge or the second depression and the at least one cleaning roller (66).

23. The floor cleaning device according to any one of the preceding claims, characterized in that, The partition wall portion (86) has an additional recess (204) or an additional bulge, and the additional recess or the additional bulge is arranged above the drive motor (104) and / or the torque transmission device (118) with reference to the height direction (74).

24. The floor cleaning device according to any one of the preceding claims, characterized in that, The partition wall portion (86) extends from the rear end portion of the floor head (22) up to the at least one cleaning roller (66).

25. The floor cleaning device according to any one of the preceding claims, characterized in that, The partition wall portion (86) extends between the opposite lateral sides (76, 78) of the floor head (22).

26. The floor cleaning device according to any one of the preceding claims, characterized in that, The partition wall portion (86) has one or more openings between the second chamber (92) and the first chamber (90), wherein, in particular, the total area of the openings accounts for at most 5%, and in particular at most 3%, and in particular at most 2.5% of the total area of the partition wall portion (86), and wherein the total area of the partition wall portion (86) is based on the area of the partition wall portion (86) for the second chamber (92).

27. The floor cleaning device according to any one of the preceding claims, characterized in that There is a cleaning liquid tank (50) which supplies cleaning liquid to the at least one cleaning roller (66) and / or the floor (30) to be cleaned via a nozzle device (180).

28. The floor cleaning device according to claim 27, wherein It has at least one of the following features: - The cleaning liquid tank (50) is positioned on the floor head (22) or the grip device (24); - A conveying device (178) for the cleaning liquid is provided, and the cleaning liquid flows from the cleaning liquid tank (50) to the nozzle device (180) via the conveying device; - A magnet valve (176) is arranged on the cleaning liquid tank (50) or the conveying device (178) for the cleaning liquid leading to the nozzle device (180).

29. The floor cleaning device according to any one of the preceding claims, characterized in that, A dirty fluid tank (160) is positioned at or in the first chamber (90), and in particular, during the operation of the floor cleaning device, the dirty fluid is coupled into the dirty fluid tank (160) from the at least one cleaning roller (66) without a blower.

30. The floor cleaning device according to claim 29, wherein It has at least one of the following features: - The battery device (196) and / or the receiving portion (186) for the battery device (196) is arranged in a first partial region above the region on the floor head (22) where the dirty fluid tank (160) is arranged with reference to the height direction (74); - The battery device (196) and / or the receiving portion (186) for the battery device (196) projects beyond the dirty fluid tank (160); - The wall region (194) bounding the second chamber (92) is arranged above the region on which the dirty fluid tank (160) is arranged with reference to the height direction (74).

31. The floor cleaning device according to any one of the preceding claims, characterized in that, A torque transmission device (118) for torque transmission from the drive motor (104) to the at least one cleaning roller (66) is arranged at or in the first chamber (90).

32. The floor cleaning device according to any one of the preceding claims, characterized in that, A rotational bearing device (132) for the at least one cleaning roller (66) is at least partially arranged at or in the first chamber (90).

33. The floor cleaning device according to any one of the preceding claims, characterized in that, A partition wall (168) is arranged at the first chamber (90), which separates a first partial space from a second partial space, wherein the drive motor (104) and / or the torque transmission device (118) is arranged in the first partial space, and a dirty fluid tank (160) is positioned in the second partial space.

34. The floor cleaning device according to any one of the preceding claims, characterized in that, The dirty fluid tank (160), when positioned on the floor head (22), extends in a first width direction (70) transverse to the rotational axis (134) and in a second width direction (72) parallel to the rotational axis (134). The dirty fluid tank (160) has a first region (224) and a second region (226) connected to the first region (224), wherein the second region (226) has a greater width in the second width direction (72) compared to the first region (224), and the second region (226) is positioned between the drive motor (104) and the at least one cleaning roller (66), while the first region (224) is positioned in front of a first end side (106) of the drive motor (104) with reference to the second width direction (72).

35. The floor cleaning device according to any one of the preceding claims, characterized in that, A receiving cylinder (126) for the at least one cleaning roller (66) is arranged on the floor head (22). The rotational bearing device (132) includes a first rotational bearing (136) fixedly arranged on the floor head (22) and positioned on the receiving cylinder (126). The rotational bearing device (132) has a second rotational bearing (138) arranged on a cover (144) for the receiving cylinder (126), and the cover (144) is movable relative to the floor head (22). And during the operation of the floor cleaning device, the at least one cleaning roller (66) is rotatably supported on the first rotational bearing (136) and the second rotational bearing (138) as a support relative to the first rotational bearing, and the at least one cleaning roller (66) can be removed from the cover (144).

36. The floor cleaning device according to any one of the preceding claims, characterized in that There is a construction scheme of a floor cleaning device in the form of a hand-guided type, which has a grip device (24) swingably mounted on the floor head (22).

37. The floor cleaning device according to any one of claims 1 to 35, characterized in that There is a construction scheme of a floor cleaning device in the form of a self-propelled and self-steering type.

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