Floor cleaning machine with base module and cleaning module

Abstract

The invention relates to a floor cleaning machine, comprising a floor head (12), at least one cleaning roller unit (24), a dirty fluid tank device (30) and a supporting device (100) for supporting the floor head (12) on a floor (14) to be cleaned, wherein the supporting device (100) and the at least one cleaning roller unit (24) provide a set-down plane (96) for the floor head (12) on the floor (14) to be cleaned, characterised in that: the floor head (12) has a base module (16) and a cleaning module (18), with the cleaning module (18) being detachably connected to the base module (16) via a coupling device (20); the at least one cleaning roller unit (24), a rotary bearing device (23) for rotatably mounting the at least one cleaning roller unit (24) and the dirty fluid tank device (30) are arranged on the cleaning module (18); and the support device (110) is arranged at least partially on the base module (16).

Description

[0001] Floor cleaning machine with base module and cleaning module

[0002] The invention relates to a floor cleaning machine comprising a floor head, at least one cleaning roller unit, a dirt fluid tank device and a support device for supporting the floor head on a floor to be cleaned, wherein the support device and the at least one cleaning roller define a mounting plane for the floor head on the floor to be cleaned.

[0003] EP 3 750 464 A1 relates to a floor cleaning robot with an autonomously movable housing and a unit which is removably fixed to the housing, the unit comprising a brush chamber, a dirt receptacle and a storage tank for a cleaning liquid.

[0004] EP 3 750 466 A1 discloses an autonomous floor cleaning device.

[0005] DE 10 2018 000 083 A1 discloses a cleaning robot comprising a chassis and a drive for moving the cleaning robot over a surface to be cleaned, at least one sensor for detecting obstacles and / or stairs, a navigation system, and a cleaning device. The cleaning device is formed by at least two cleaning modules, each of which is alternatively and optionally detachably connected to the chassis in a non-destructive manner and can be exchanged for the other cleaning module.

[0006] Further cleaning devices are described in US 2020 / 0337513 Al, the

[0007] CN 211381147 U, EP 3 714 754 A1, WO 2020 / 0125774 A1 or

[0008] EP 2 842 472 Bl discloses.

[0009] US 2017 / 0055791 A1 discloses a vacuum cleaner. EP 3 695 767 A1 discloses a floor cleaning device with a collection container and a microfiber brush roller. A housing is provided that is movable along a surface to be cleaned. A battery is mounted on the housing and electrically connected to a drive motor.

[0010] WO 2021 / 112354 A1 discloses a vacuum cleaner.

[0011] 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. Further cleaning devices are disclosed in US 2006 / 0064828 A or WO 01 / 41618 A1.

[0012] CN 108478109 A and CN 209489960 U disclose robots for cleaning photovoltaic modules.

[0013] DE 10 2015 104 749 Al discloses a hand-operated or autonomous floor cleaner, as does DE 10 2015 104 750 Al.

[0014] Floor cleaning devices are, for example, covered by EP 3 750 464 Al, the

[0015] EP 3 884 834 A1, US 2021 / 018620 A1 or KR 2012 06900U.

[0016] WO 2018 / 162092 A1 discloses a floor cleaning device with which an autonomous cleaning of a floor surface can be carried out.

[0017] 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.

[0018] DE 20 2015 101 302 Ul discloses a cleaning device in the form of a vacuum cleaner.

[0019] From WO 2016 / 058901 Al, WO 2016 / 058856 Al, WO 2017 / 063663 Al,

[0020] Surface cleaning machines are known from WO 2016 / 058879 A1 and WO 2016 / 058956 A1. A surface cleaning machine is also known from WO 2016 / 058907 A1.

[0021] From US 4,875,246 a portable floor cleaning device is known which has a roller driven by an electric motor.

[0022] From DE 20 2009 013 434 Ul a device for wet cleaning floors with a brush which can be rotated about a rotation axis is known.

[0023] A cleaning machine is known from CN 201 197 698 Y.

[0024] US 6,026,529 discloses a device for cleaning floors or other hard surfaces.

[0025] A surface cleaning machine with rotating brushes is known from WO 2010 / 041185 A1.

[0026] A cleaning head for a floor cleaning machine is known from US 7,665,174 B2.

[0027] From US 4,173,054 a floor cleaner is known which comprises a handle, a main body, a roller mechanism with a roller with a cleaning belt, a scraper and a dirt fluid receptacle.

[0028] WO 2013 / 106762 A2 discloses a surface cleaning machine with a cleaning roller and a drive unit for driving the cleaning roller. A dirt tray is provided into which the cleaning roller sweeps dirt during rotation. The dirt tray can be opened. US Pat. No. 7,921,497 B2 discloses a manually operated floor scrubber comprising a drive roller coupled to a scrubbing roller.

[0029] Another floor cleaning machine is known from WO 2015 / 086083 Al.

[0030] A hard floor cleaning device is known from US 3,789,449.

[0031] From DE 103 57 637 A1 a self-propelled sweeper with a sweeping brush and an associated dirt collection chamber is known.

[0032] A household floor cleaning device with a wiping roller is known from DE 10 2007 054 500 Al.

[0033] From US 2006 / 0272120 A1 a floor cleaning device with a housing, a hose arrangement and a cleaning head is known.

[0034] From DE 10 2017 120 723 A1 a cleaning machine station for a cleaning machine is known, wherein the cleaning machine station has a receiving chamber for a cleaning head of the cleaning machine.

[0035] From WO 2005 / 087075 A1 a floor cleaning machine is known with a handle which is pivotably arranged on a base.

[0036] CN 107007215 A discloses a floor cleaning robot.

[0037] DE 20 2018 104 772 Ul discloses a dirty water collection mechanism and dirty water detection mechanism and a cleaning device.

[0038] Cleaning machines are also from AU 2017101723 A4, the

[0039] CN 206687671 U, DE 20 2016 105 300 Ul, US 9,622,637 Bl, CN 205359367 U, US 2017 / 0119225 Al, CN 205181250 U, the

[0040] CN 205181251 U, CN 205181256 U, DE 20 2016 105 299 U, WO 2017 / 059602 Al, WO 2017 / 059600 Al, WO 2017 / 059601 Al, WO 2017 / 059603 Al or DE 20 2016 105 301 Ul.

[0041] The unpublished DE 10 2022 102 924.7 discloses a floor cleaning device comprising a floor head and at least one cleaning roller, which rotates about a rotational axis during operation of the floor cleaning device. The at least one cleaning roller is held at least partially on the floor head by a holding device, the holding device being removable from the floor head together with the at least one cleaning roller. This document is incorporated herein by reference.

[0042] Further floor cleaning devices are available in the unpublished

[0043] DE 10 2022 102 937.9 and DE 10 2022 102 918.2, which are incorporated herein by reference.

[0044] Further floor cleaning devices are disclosed in CN 207850637 U and WO 21248591 A1.

[0045] The invention is based on the object of providing a floor cleaning machine of the type mentioned above which can be cleaned in a simple manner.

[0046] This object is achieved according to the invention in the floor cleaning machine mentioned above in that the floor head has a base module and a cleaning module, wherein the cleaning module is detachably connected to the base module via a coupling device, the at least one cleaning roller unit, a pivot bearing device for rotatably supporting the at least one cleaning roller unit, and the dirty fluid tank device are arranged on the cleaning module, and the support device is at least partially arranged on the base module. In the solution according to the invention, the floor head is divided into a base module and a cleaning module.

[0047] The cleaning module is a module through which liquid is applied to the floor to be cleaned.

[0048] The solution according to the invention allows for a separation, and in particular, the majority of contaminated fluid can be kept away from the base module. This allows, as mentioned, a separation into a basic electrical component and the cleaning module.

[0049] The at least one cleaning roller unit and the rotary bearing device are positioned on the cleaning module.

[0050] The pivot bearing device can form the complete pivot bearing for the at least one cleaning roller unit and in particular the cleaning roller unit with the cleaning module can then be removed from the base module.

[0051] The rotary bearing device on the cleaning module can also form only a part of the overall rotary bearing for the at least one cleaning roller unit.

[0052] For example, the cleaning module is designed so that it can be cleaned under a water jet with the cleaning roller unit and / or dirty fluid tank device attached to it, or when these components are removed.

[0053] By arranging the pivot bearing device on the cleaning module, which can be removed from the base module, components of the pivot bearing device that are exposed to contaminating fluid can also be easily cleaned, for example, under a water jet. In particular, the pivot bearing device is an integral part of the cleaning module and remains attached to the cleaning module after the removal of the at least one cleaning roller unit. This makes it possible, for example, to wash a cleaning roller of the at least one cleaning roller unit in a washing machine.

[0054] This also makes it easy to empty the dirty fluid tank by removing the cleaning module from the base module.

[0055] It is advantageous if the cleaning module follows the base module in a longitudinal direction of the floor head, with a rotational axis of the at least one cleaning roller unit oriented transversely and in particular perpendicular to the longitudinal axis. This results in a compact design. The cleaning module can be easily inserted into or removed from the base module. Mechanical coupling and, for example, fluid coupling between the cleaning module and the base module can be easily implemented.

[0056] It is advantageous if at least one of the following is provided: a forward movement direction of the floor head on the floor to be cleaned is parallel to the longitudinal direction; a forward movement direction of the floor head on the floor to be cleaned is transverse and in particular perpendicular to the rotation axis of the at least one cleaning roller unit; a removal direction of the cleaning module from the base module is (i) parallel or (ii) transverse and in particular perpendicular to the longitudinal direction. This results in a structurally simple and compact design of the floor head.

[0057] Furthermore, it is advantageous if at least one of the following is provided: in a cleaning operation, a liquid-containing action on the floor to be cleaned and a liquid-containing dirty fluid coupling at the floor head only takes place at the cleaning module; in a cleaning operation, a liquid-containing dirty fluid flow only takes place at the cleaning module; in a cleaning operation, a liquid-containing protective fluid impingement on the floor head essentially only takes place at the cleaning module.

[0058] This allows the majority of the dirt to be concentrated on the cleaning module. The corresponding "load" on the base module can be kept to a minimum. This allows for an effective separation into, for example, an electrical base module (the base module) and a "dirt module" (the cleaning module).

[0059] In particular, the cleaning module is subjected to a corresponding exposure to a liquid-containing dirt fluid. It can generally be provided that, for example, a sweeping unit for sweeping dry dirt is provided on the base module, or that a sweeping module with, for example, a sweeping roller is located on the base module, facing away from the cleaning module.

[0060] It is particularly advantageous if the cleaning module (including "open" components of the pivot bearing device) is designed so that it can be cleaned under a water jet after being removed from the base module. For example, the cleaning module can then be cleaned with the dirty fluid tank device and cleaning roller unit, or, if these components are removed from the cleaning module, at a sink under a water jet. This, in turn, allows the entire device to be cleaned simply and effectively. Open (contaminated) components of the pivot bearing device (such as the holder for the at least one cleaning roller unit) can be rinsed directly. Generally, a superficial wipe is sufficient to clean the base module, since the base module is only exposed to splashes at most.

[0061] Advantageously, the cleaning module comprises at least one of the following: a first holder for the at least one cleaning roller unit, wherein the at least one cleaning roller unit is in particular removable from the first holder; a second holder for the dirty fluid tank device, wherein in particular the dirty fluid tank device is removable from the second holder; a housing; a scraper device for scraping dirty fluid from the at least one cleaning roller unit; a hair comb device for collecting hair from the at least one cleaning roller unit; a sweeping device for supplying coarse dirt to the at least one cleaning roller unit; at least a partial region of a torque transmission device for rotatingly driving the at least one cleaning roller unit; a partial region of the coupling device;a nozzle device for applying cleaning fluid to the at least one cleaning roller unit and / or the floor to be cleaned; a portion of a suction path;

[0062] This allows dirt and fluid, including contaminated fluid, to be concentrated on the cleaning module. The first holder contains or is the pivot bearing device.

[0063] In principle, the floor cleaning machine can be operated without a fan or with a fan device that generates a suction flow, with the suction flow or a portion of the suction flow acting on the at least one cleaning roller unit. In this case, it is advantageous if the fan device is located on the base module or, for example, on a support rod device, which in turn is fixed to the base module. In particular, a first portion of a suction path is arranged on the base module, and a second portion of a suction path is arranged on the cleaning module.When the cleaning module is properly seated on the base module, the first part of the suction path and the second part of the suction path provide a fluid-effective connection between an outlet device on the cleaning roller unit and the blower device in order to obtain a corresponding suction flow at the at least one cleaning roller unit during operation of the floor cleaning machine.

[0064] It is furthermore advantageous if at least one of the following is arranged on the base module: a housing; an electrical circuit device; a fluid-tight capsule, in particular for an electrical circuit device; a drive motor for a rotational drive of the at least one cleaning roller unit; at least a partial area of ​​a torque transmission device for transmitting a torque from a drive motor to the at least one cleaning roller unit; an electrical connection for the electrical power supply; a battery device; at least one sensor unit, in particular for self-propelled and self-steering operation of the floor head; a partial area of ​​the coupling device; a steering device and / or drive device for a travel movement of the floor head; a cleaning fluid tank device; a blower device; at least one pump which is fluidly connected to a cleaning fluid tank device;a valve such as a solenoid valve; a portion of a suction path.;

[0065] In particular, electrical components or components that require a power supply can be arranged on the base module. This allows, for example, the electrical wiring to be easily designed.

[0066] It is particularly advantageous if the coupling device provides a releasable mechanical fixation of the cleaning module to the base module. This allows for a mechanical fixation of the cleaning module to the base module in addition to other connection types.

[0067] It is advantageous if at least one of the following is provided: the coupling device is designed such that it provides an electrical connection between the base module and the cleaning module, which is in particular detachable; the coupling device is designed such that it provides a fluid connection for cleaning fluid between the base module and the cleaning module, which is in particular detachable; the coupling device is designed such that it provides a torque transmission between the base module and the cleaning module for rotationally driving the at least one cleaning roller unit, which is in particular detachable; the coupling device is designed such that it provides an air flow connection between the base module and the cleaning module for providing a suction flow to the cleaning module, which air flow connection is in particular detachable.

[0068] An electrical connection between the base module and the cleaning module can be provided as needed. For example, sensors can be arranged on the cleaning module to determine the condition of the floor to be cleaned or to detect the floor, or a lighting device can be arranged on the cleaning module to illuminate the floor to be cleaned.

[0069] It can also be advantageous if a fluid connection for cleaning fluid is established through the coupling device. The cleaning module can then be supplied with cleaning fluid via the base head. A corresponding cleaning fluid tank can be arranged on the base head or a support rod device. However, it is also possible in principle for a cleaning fluid tank to be arranged on the cleaning module.

[0070] By means of a torque connection on the coupling device, a torque of a drive motor can be transmitted to the cleaning module in order to be able to drive the at least one cleaning roller unit in a rotational movement.

[0071] In principle, it is possible for the corresponding floor cleaning machine to be operated without a fan, and in particular for the dirty fluid to be detached from the at least one cleaning roller unit via a scraper device and, in a sense, thrown into the dirty fluid tank device. It is also possible for the floor cleaning machine to be equipped with a fan unit that provides a suction flow. This suction flow acts in particular on the at least one cleaning roller unit. It can also act additionally on a floor to be cleaned and ensures that the dirty fluid is conveyed into the dirty fluid tank device. In this case, it is then particularly provided that the coupling device also ensures a coupling of a suction path between the base module and the cleaning module.

[0072] In one embodiment, the coupling device has a first sub-region located on the base module and a second sub-region located on the cleaning module. Upon interaction of the first sub-region with the second sub-region, a coupling is established between the base module and the cleaning module. The coupling is, in particular, a mechanical coupling for holding the cleaning module to the base module. Additionally, a torque coupling and / or a fluid coupling and, if appropriate, also an electrical connection coupling may be present.

[0073] In a structurally simple embodiment, the coupling device has only one coupling point between the cleaning module and the base module. It can also be provided that the coupling device has a plurality of spaced-apart coupling points. This can, for example, separate the torque coupling from the mechanical fixation, or secure mechanical holding can be achieved via multiple coupling points.

[0074] In one embodiment, the dirty fluid tank device is arranged on the cleaning head in a receiving chamber and is, in particular, arranged so that it can be removed. This allows the cleaning tank to be easily removed. However, it can also be arranged in a floating manner, for example.

[0075] In particular, at least one of the following is provided: the receiving chamber has an openable lid, wherein, when the lid is open, access to a receiving space of the receiving chamber is provided; the dirty fluid tank device can be removed from the receiving chamber in a direction transverse and in particular perpendicular to a rotation axis of the at least one cleaning roller unit from the cleaning module; the dirty fluid tank device can be removed from the cleaning module upwards or downwards relative to a mounting plane side of the at least one cleaning roller unit.

[0076] This allows for easy removal and insertion of the dirty fluid tank assembly on the cleaning module, particularly for emptying and cleaning the dirty fluid tank assembly itself. Furthermore, the dirty fluid tank assembly has a large capacity for dirty fluid.

[0077] Alternatively, at least one of the following may be provided: the receiving chamber is designed as a receiving shaft; the dirty fluid tank device is removable from the cleaning module in a direction parallel to a rotation axis of the at least one cleaning roller unit.

[0078] For example, it is easy to provide a relatively long cleaning roller with an effective cleaning effect.

[0079] In one embodiment, a web is arranged on the base module, on which a portion of the coupling device is arranged, wherein at least part of a torque transmission device is arranged on the web. A drive element for the at least one cleaning roller unit can be easily provided on the base module via the web. The torque transmission device allows a torque to be easily transmitted from this drive element to the at least one cleaning roller unit. In this way, a floor head with a cleaning roller unit having a great length can be realized.

[0080] It is particularly advantageous if the coupling device comprises a sliding guide device along which the cleaning module can be slid toward the web. This allows the cleaning module to be easily secured to the base module, and a torque coupling can be easily achieved by sliding it toward the web.

[0081] In one embodiment, the coupling device comprises a pivot bearing. This allows, for example, a relatively long cleaning roller to be used.

[0082] In one embodiment, an electronics module with a fluid-tight enclosure is arranged on the base module. The fluid-tight enclosure for the electronics module can be provided by the base module itself, or there can be an additional enclosure. In particular, water-sensitive electronic or electrical elements of the base head are integrated into the electronics module.

[0083] In one embodiment, an openable cover or flap is arranged on the base module, with the encapsulation being located on the cover or forming the cover. In particular, the cover or flap is pivotably mounted on the base module. This allows for easy integration of an electronic module while still being protected.

[0084] In one embodiment, a holding rod device is provided, which is arranged on the floor head and by means of which an operator can guide the floor cleaning machine in an upright position over the floor to be cleaned. This allows floor cleaning, in particular of a hard floor, to be carried out easily by hand. It is advantageous if at least one of the following is provided: the holding rod device is pivotable about at least one pivot axis relative to the floor head, wherein in particular the pivot axis is oriented parallel to a rotation axis of the at least one cleaning roller unit; at least one of the following is arranged on the holding rod device: a battery device; a cleaning fluid tank device; a portion of a supply device for supplying cleaning fluid to the cleaning module; an operator panel device; a blower device for generating a suction flow.

[0085] This allows for effective floor cleaning.

[0086] Alternatively, it is possible for the floor cleaning machine to be self-propelled and self-steering ("cleaning robot", especially with a wiping function).

[0087] It is advantageous if at least two spaced-apart support elements are arranged on the base module. This results in an effective installation plane. The support elements are in particular support rollers or support skids. For example, a steering roller can also be part of the support device. It is advantageous if the dirty fluid tank device is designed such that it is arranged on the cleaning module in relation to the at least one cleaning roller unit such that dirty fluid detached from the at least one cleaning roller unit is coupled into the dirty fluid tank device without the need for a fan during cleaning operation. This results in a structurally simple design. A fan device can also be provided which generates a suction flow. This suction flow acts on the at least one cleaning roller unit during operation of the floor cleaning machine and ensures that dirty fluid is pumped into the dirty fluid tank device.In particular, a separator is provided which separates an air stream from a liquid stream to prevent liquid from being applied to the blower device. The separator is preferably arranged on the dirty fluid tank device and, in particular, integrated into it.

[0088] The following description of preferred embodiments, taken in conjunction with the drawings, serves to further explain the invention. They show:

[0089] Figure 1 is a schematic view of a first embodiment of a floor head of a floor cleaning machine according to the invention;

[0090] Figures 2(a), (b), (c), (d) show various variants for the arrangement of a cleaning module and a base module as well as for the arrangement of the dirt fluid tank device and the cleaning roller unit on a cleaning module;

[0091] Figure 3 is a perspective view of an embodiment of a hand-held floor cleaning machine with a holding rod device; Figure 4 is a perspective view of a floor head of the floor cleaning machine according to Figure 3;

[0092] Figure 5 shows the floor head according to Figure 4, wherein a cleaning module is removed from a base module;

[0093] Figure 6 is a similar view to Figure 5, with the

[0094] Cleaning module cleaning rollers are removed, a cover is opened and the dirty fluid tank device is removed;

[0095] Figure 7 is a perspective view of another

[0096] Embodiment of a floor head (with support rod device removed);

[0097] Figure 8 shows the floor head according to Figure 7 with the cleaning module separated from a base module;

[0098] Figure 9 shows the bottom head according to Figure 7 with partially

[0099] Cleaning module inserted into the base module;

[0100] Figure 10 shows a further embodiment of a floor head with the holding rod device removed;

[0101] Figure 11 shows the floor head according to Figure 10, with a cleaning module removed from a base module;

[0102] Figure 12 is a similar view to Figure 11, with the cleaning rollers, the dirty fluid tank device, and the cover removed from the cleaning module; and Figure 13 is a schematic view of another embodiment of a floor cleaning machine according to the invention.

[0103] A first embodiment of a floor cleaning machine according to the invention, which is shown schematically in Figure 1 and designated by 10, comprises a floor head 12. During operation of the floor cleaning machine 10, the floor head 12 rests on a floor 14 to be cleaned by means of a support device. This will be explained in more detail below using specific embodiments.

[0104] The floor head 12 can be part of a floor cleaning machine 10, which is guided over the floor via a holding rod device by an operator who himself stands on the floor 14 to be cleaned (see Figure 3).

[0105] The floor head 12 can itself also form a self-propelled and self-steering floor cleaning machine ("cleaning robot").

[0106] The floor head 12 comprises a base module 16 and a cleaning module 18. The cleaning module 18 is detachably connected to the base module 16 via a coupling device 20.

[0107] The cleaning module 18 has a first holder 22 on which a cleaning roller unit 24 is mounted for rotation about a rotation axis 26. The first holder 22 includes a pivot bearing device 23 for the cleaning roller unit 24, which ensures rotation about the rotation axis 26.

[0108] The cleaning module 18 further includes a second holder 28. A dirty fluid tank device 30 is arranged on the second holder. Due to the removability of the cleaning module 18 (with pivot bearing device 23) from the base module 16, the pivot bearing device 23, the cleaning roller unit 24, and the dirty fluid tank device 30 can be removed from the base module 16 via the cleaning module 18 and can also be installed on the base module.

[0109] The floor head 12 is assigned a longitudinal direction 32. The floor head 12 has a rear end 34 and a front end 36. When the cleaning module 18 is fixed to the base module 16 at the coupling device 20, the at least one cleaning roller unit 24 is located closer to the front end 36 than to the rear end 34.

[0110] Figure 1 shows an embodiment in which the cleaning roller unit 24 is located at the front end 36.

[0111] The longitudinal direction 32 runs between the rear end 34 and the front end 36.

[0112] The rotation axis 26 of the cleaning roller unit 24 lies transversely and in particular perpendicular to the longitudinal direction 32.

[0113] The cleaning module 18 follows the base module 16 in the longitudinal direction 32. With respect to the longitudinal direction 32, the cleaning module 18 is arranged in front of the base module 16.

[0114] During cleaning operation of the floor cleaning machine 10, the floor head 12 has a forward movement direction 38. The rotation axis 26 lies transversely and in particular perpendicular to this forward movement direction 38. The longitudinal direction 32 is in particular parallel to the forward movement direction 38. Figure 1 shows a forward movement direction 38 which runs in the direction from the base module 16 to the cleaning module 18. In principle, however, the forward movement direction can also be opposite to the direction 38 shown in Figure 1, so that in this case the forward movement direction runs from the cleaning module 18 to the base module 16.

[0115] On the cleaning module 18, the dirty fluid tank device 30 is arranged in relation to the cleaning roller unit 24 such that dirty fluid can be conveyed from the cleaning roller unit 24 directly and in particular without a fan into the dirty fluid tank device 30.

[0116] Dirt fluid is understood to mean flowable dirt, which in particular contains liquid.

[0117] In one embodiment, the cleaning roller unit 24 comprises a textile lining, such as a microfiber lining. A scraper device is arranged on the cleaning module 18, which scrapes dirt fluid from the textile lining and thereby ensures its coupling into the dirt fluid tank device 30.

[0118] A nozzle device 40 is arranged on the cleaning module 18. The nozzle device 40 is connected to a cleaning fluid tank via a supply device (this will be described in more detail below using specific exemplary embodiments). Cleaning fluid (pure water or pure water provided with a cleaning agent, in particular a surfactant-containing cleaning agent) can be supplied to the cleaning roller unit 24 via the nozzle device 40, in particular for moistening a textile covering and / or directly to the floor 14 to be cleaned. The floor cleaning machine 10 thus allows wet cleaning, in particular of a hard floor, to be carried out. Wet cleaning results in improved dirt removal properties from the floor 14 to be cleaned. During operation of the floor cleaning machine 10, the cleaning roller unit 24 acts mechanically on the floor to be cleaned.Furthermore, the floor 14 to be cleaned is exposed to liquid via the nozzle device 40 directly and / or via the moistened cleaning roller unit 24. The cleaning roller unit 24 receives, in particular, liquid-containing dirt fluid, which is scraped off via the scraper device and coupled into the dirt fluid tank device 30 on the cleaning module 18.

[0119] In the embodiment shown, the cleaning roller unit 24 is formed in two parts with a first cleaning roller 42 and a second cleaning roller 44. These are located on corresponding shafts and have the common rotation axis 26.

[0120] A torque transmission device 46 is provided, which is in torque-effective connection with a drive motor 48 and acts in particular on the pivot bearing device 23. For example, the pivot bearing device 23 comprises one or more driven holding elements for the cleaning roller unit 24.

[0121] The drive motor 48 is arranged in the base module 16. The torque transmission device 46 is arranged with a first portion 50 on the base module 16 and is directly coupled to the drive motor 48. A second portion 50 is arranged on the cleaning module 18.

[0122] In the embodiment indicated in Figure 1, the cleaning roller unit 24 is centrally driven on the cleaning module 18 as it rotates about the rotation axis 26. The floor head 12 has a first lateral side 54 and a second lateral side 56 between the front side 36 and the rear side 34. The rotating roller unit 24 is driven centrally between the first lateral side 54 and the second lateral side 56, i.e., a torque is coupled centrally into the cleaning roller unit 24 via the torque transmission device 46. The torque transmission device 46 comprises, for example, a belt drive or toothed drive.

[0123] The cleaning module 18 is releasably mechanically fixed to the base module 16 via the coupling device 20. Furthermore, the torque transmission from the first sub-area 50 to the second sub-area 52 of the torque transmission device 46 takes place via the coupling device. The torque transmission device 46 is correspondingly releasably connected by the coupling device 20.

[0124] Furthermore, the coupling device comprises a fluid line so that cleaning fluid can be supplied from the cleaning fluid tank to the nozzle device 40.

[0125] The coupling device 20 is designed such that when the cleaning module 18 is coupled to the base module 16, both the mechanical connection for securing it and the torque transmission connection and the fluid connection for supplying cleaning fluid to the nozzle device 40 are established. Accordingly, when the cleaning module 18 is removed from the base module 16, the mechanical securing connection, the mechanical torque transmission connection, and the fluid connection are released.

[0126] The drive motor 48 is arranged in a protected manner on the base module 16. An electrical circuit arrangement 58 is also arranged on the base module 16. Additional components such as a pump for supplying cleaning fluid from the cleaning fluid tank to the nozzle device 40, a solenoid valve, a battery device, etc., may be arranged on the base module 16.

[0127] In principle, the floor head 12 is designed such that, during cleaning operation of the floor cleaning machine 10, the floor head 12 is subjected to a significant amount of dirty fluid only at the cleaning module 18. The significant amount of dirty fluid exposure is considered to be the removal of dirty fluid from the floor 14 to be cleaned. In principle, the base module 16 can also experience dirty fluid splashes or the like, although this is not considered a significant amount of dirty fluid exposure.

[0128] During cleaning, cleaning fluid is applied to the floor 14 to be cleaned via the cleaning module 18. Dirty fluid is removed from the floor 14 to be cleaned via the cleaning module 18 and collected in the dirty fluid tank device 30 on the cleaning module 18. The significant dirty fluid load on the floor head 12 is thus concentrated on the cleaning module 18.

[0129] In principle, the soil head 12 is exposed to a liquid-laden dirty fluid at the cleaning module 18, and relevant dirty fluid flows are present only at the cleaning module 18. Furthermore, the soil head 12's action in conjunction with the dirty fluid on the floor 14 to be cleaned occurs only at the cleaning module 18.

[0130] The solution according to the invention with the base module 16, which is essentially not contaminated with contaminants, and the cleaning module 18, which is contaminated with contaminants, allows for a "contaminant exposure" separation.

[0131] The cleaning module 18 can be removed and cleaned, for example, under a water jet (under a faucet). For example, the cleaning roller unit 24 and the dirty fluid tank device 30 do not have to be removed individually from the floor head 12. Instead, the basic dirty fluid-containing device, namely the cleaning module 18, can be removed as a whole and cleaned, for example, under a water jet at a sink. In one embodiment, the cleaning fluid tank is also arranged on the cleaning module 18.

[0132] In principle, it is not necessary to provide an electrical connection for the cleaning module 18 on the floor cleaning machine 10.

[0133] However, it is also possible for the coupling device to comprise a detachable electrical connection. This can be advantageous, for example, if sensor elements are arranged on the cleaning module 18, or if, for example, a cleaning fluid tank and a pump for supplying cleaning fluid to the nozzle device 40 are arranged on the cleaning module 18.

[0134] Electrical components including drive motor 48, electrical circuitry 58, etc. can be arranged in a protected manner on the base module 16 without significant exposure to dirty fluid.

[0135] The floor head 12 is divided into the electrical device unit, base module 16, and the mechanical cleaning unit, cleaning module 18. All components sensitive to liquid (and also dirt) can be positioned and protected on the base module 16.

[0136] The floor cleaning machine 10 is supported on the floor 14 to be cleaned via a support device 60. The support device 60 comprises support elements 62 arranged on the base module 16. These support elements 62 are, for example, support rollers and, in the example of a self-propelled and self-steering floor cleaning machine, can also comprise a steering roller and / or drive wheels.

[0137] The support device 60 further comprises at least one support element which is arranged on the cleaning module 18. In particular, the cleaning roller unit 24 is such a support element on the cleaning module 18. (Additionally, further support elements can also be arranged on the cleaning module

[0138] 18 may be provided.)

[0139] The support device 60 is thus designed such that, during a cleaning operation, the floor head 12 is supported on both the cleaning module 18 and the base module 16 on the floor to be cleaned.

[0140] In one embodiment, it is provided that the dirty fluid is coupled into the dirty fluid tank device 30 at the cleaning module 18 without the use of a fan. Alternatively, it is also possible to provide a fan device 61 that generates a suction flow. The fan device 61 is arranged, in particular, on the base head 12 (or a support rod device located on the base head 12). A suction path 63 leads from the fan device 61 to the cleaning module 18 and, in turn, to the dirty fluid tank device 30. In particular, the suction path 63 extends through the coupling device 20.

[0141] If the cleaning module 18 is used on the base module 16, then an automatic air flow connection to the suction path 63 for the corresponding negative pressure application to the cleaning roller unit 24 is preferably also effected via the coupling device 20.

[0142] In particular, the suction path 63 is then arranged such that a negative pressure is applied to a corresponding mouth wall towards the cleaning roller unit 24.

[0143] When a blower device 61 is provided, a separator is provided, in particular, which ensures air-liquid separation and prevents liquid from reaching the blower device 61. In particular, the separator (indicated in Figure 1 by reference numeral 65) is then arranged on the dirty fluid tank device 30 and, in particular, integrated therein. Figure 2 shows different examples of the arrangement of the base module 16 relative to the cleaning module 18 (with respect to the longitudinal direction 32) and different arrangements within the cleaning module 18.

[0144] The arrangement according to Figure 2(b) corresponds to the arrangement described in connection with Figure 1. The cleaning module 18 follows the base module 16 in the longitudinal direction 32 toward the front end 36.

[0145] In this embodiment, the rotating roller unit 24 rotates on the floor 14 to be cleaned toward the base module 16. In a side view in the direction 64 according to Figure 2(b), this corresponds to a counterclockwise rotation (noted by c).

[0146] This results in a drive in direction 66 (which has the same direction as the forward movement direction 38).

[0147] In the embodiment shown in Figure 2(a), the corresponding cleaning module 18' follows the corresponding base module 16', again in the longitudinal direction 32. The dirty fluid tank device 30' is located at the corresponding front end 36. The cleaning roller unit 24', which is located on the cleaning module 18', is arranged between the dirty fluid tank device 30' and the base module 16'.

[0148] In this case, the cleaning roller unit 24 rotates such that the direction of rotation on the floor 14 to be cleaned points in the forward movement direction 38.

[0149] Relative to a view in direction 64, the rotation is clockwise (indicated by u).

[0150] A drive, which is indicated by the direction 68, is thus opposite to the forward movement direction 38. In this embodiment, an operator must then overcome the counterforce or a further drive must be provided, which is then located in particular in the base module 16'.

[0151] In the embodiments shown in Figures 2(c) and 2(d), a front end 70 is formed on the corresponding base module 72. A cleaning module 74 follows the base module 72 in the longitudinal direction 32, wherein the cleaning module 74 is arranged behind the base module 72 with respect to the front end 70.

[0152] In the cleaning module 74 according to Figure 2(c), the cleaning roller unit is arranged at a rear end 76, and the dirty fluid tank device 78 is located accordingly between the cleaning roller unit and the base module 72. In this case, a clockwise rotation of the cleaning roller unit is provided with respect to the direction 64, and the corresponding drive is opposite to the forward movement direction 38.

[0153] In the embodiment shown in Figure 2(d), the cleaning roller unit is arranged between the dirty fluid tank device 78 and the base module 72. Relative to the direction 64, the cleaning roller unit rotates counterclockwise. The corresponding drive is then parallel to the forward movement direction 38.

[0154] In the embodiments shown in Figures 2(a) to (d) with corresponding directions of rotation of the cleaning roller units, the path traversed by the dirty fluid collected from the floor 14 to be cleaned up to the dirty fluid tank device and in particular an outlet device of the dirty fluid tank device is minimized.

[0155] In principle, the opposite direction can also be provided in all of the described embodiments, in which case a type of transfer of the dirt fluid (with an extended path) takes place. A specific embodiment of a floor cleaning machine according to the invention, which is shown in Figures 3 to 6 and designated by 80, comprises a floor head 82 with a base module 84 and a cleaning module 86.

[0156] A support rod device 90 is arranged on the cleaning module 86 and can pivot about a pivot axis 88. The pivot axis 88 is parallel to a rotation axis 92 of a cleaning roller unit 94, which is mounted on the cleaning module 86.

[0157] The support rod device 90 is pivotally connected distally to the base head 82 via the pivot axis 88 and is articulated there to the base module 84. In addition to the pivot axis 88, a further pivot axis may also be present transversely thereto.

[0158] By pivoting about the pivot axis 88, the height of the floor cleaning machine 80 can be adjusted by an operator between a setup level 96 and a proximal end of the support rod device 90. This allows for height adjustment to the height of an operator. Furthermore, it also ensures that the machine can be driven under furniture, for example.

[0159] A bow handle 98 is located at the distal end of the support rod device 90. An operator panel device 100 is arranged at the distal end of the support rod device 90 in the region of the bow handle or on the bow handle.

[0160] A cleaning fluid tank 102, which holds cleaning fluid, is detachably mounted on the holding rod device 90.

[0161] In one embodiment, a battery device 104, which supplies the floor cleaning machine 80 with electrical energy, is also located on the support rod device 90. The base module 84 comprises a housing 106. Support wheels 108 of a support device 110 are arranged on the housing 106. The support device 110 defines the installation plane 96, wherein (with the cleaning module 86 located on the base module 84) the cleaning roller unit 94 is part of the support device 110 and provides appropriate support via the installation plane 96 on the floor 14 to be cleaned.

[0162] A drive motor (not shown in the drawings) is arranged in the housing 106. This drive motor acts on the cleaning roller unit 94 via a corresponding torque transmission device when the cleaning module 86 is attached to the base module 84.

[0163] Furthermore, a circuit device is arranged in the housing 106.

[0164] It may also be provided that a pump for supplying cleaning fluid to the cleaning module 86 is arranged in the housing 106. Furthermore, in one embodiment, a valve such as a solenoid valve for this supply device is arranged in the housing 106.

[0165] The arrangement is water-protected and, in particular, encapsulated.

[0166] The cleaning module 86 comprises a base 112. A receiving chamber 114 for a dirty fluid tank device 116 is formed on the base 112. The receiving chamber 114 comprises a receiving space 118 with sub-spaces 118a and 118b. A sub-section 120 of a torque transmission device extends between the sub-spaces 118a, 118b. This sub-section 120 is arranged on the cleaning module 86.

[0167] It comprises a drive element 122, on which shaft stubs 124 are located on both sides. The drive element 122 is rotatable. A cleaning roller 126 can be mounted on each of the shaft stubs 124 in a rotationally fixed manner. This forms a pivot bearing device 124. The shaft stubs 124 form a first holder 128 on the cleaning module 86 for holding the respective cleaning roller 126 and thus the cleaning roller unit 94.

[0168] The cleaning rollers 126 rotate around the same rotation axis 92.

[0169] The dirty fluid tank device 116 comprises a container 130 with a first region 132 and a second region 134. The first region 132 can be inserted into the subspace 118a, and the second region 134 can be inserted into the subspace 118b. A bridge 136 of the dirty fluid tank device 116, which connects the first region 132 and the second region 134, is positioned over the subsection 120 of the torque transmission device when the dirty fluid tank device 116 is positioned in the receiving chamber 114.

[0170] Relative to an installation level side 138 of the cleaning module 86, the dirty fluid tank device 116 can be inserted into the receiving chamber 114 from above.

[0171] The cleaning module 86 comprises a cover 140. The cover 140 allows the receiving space 118 and thus the receiving chamber 114 to be closed upwards.

[0172] In particular, the cover 140 is removable as a whole. However, it can also be pivotably attached to the cleaning module 86, for example.

[0173] To remove the dirty fluid tank assembly 116 from the receiving chamber 114, the cover 140 is removed. The dirty fluid tank assembly 116 can then be removed upward from the receiving chamber 118.

[0174] A scraper device 142 is arranged on the dirty fluid tank device 116. The scraper device 142 is located at an outlet device 144 of the dirty fluid tank device 116, via which the dirty fluid separated from the cleaning roller unit 96 by the scraper device 142 can be coupled directly into an interior of the dirty fluid tank device 116.

[0175] The scraper device 142 is arranged such that it rests against a trim of the cleaning rollers 126 or, in particular, is immersed in it when the dirty fluid tank device 116 and the cleaning rollers 126 are positioned on the cleaning module 86.

[0176] In particular, a fan-free coupling of dirty fluid, which is detached from the cleaning roller unit 96 via the scraper device 142, takes place at the outlet device 144 into the dirty fluid tank device 116.

[0177] A coupling device 146 is provided by which the cleaning module 86 can be detachably coupled to the base module 84 (see Figures 3 and 4).

[0178] The coupling device 146 comprises a first portion 148, which is located on the base module 84, and a second portion 150, which is located on the cleaning module 86.

[0179] In the embodiment shown, the first portion 148 comprises an opening 152. The second portion 150 comprises an immersion element 154 in this opening.

[0180] A fixing element 156 can be provided for the coupling device 146, which forms a securing element and is a separate part. For example, if the immersion element 154 is immersed in the opening 152, the fixing element 156 can be placed on the base module 84 over the first sub-region 148 to ensure mechanical fixation of the cleaning module 86 to the base module 84. A mechanical coupling is integrated into the immersion element 154, which ensures a torque connection between the sub-region 120 of the torque transmission device and the sub-region of the torque transmission device on the base module 84 that is directly connected to the drive motor.

[0181] Furthermore, a fluid connection 158 is integrated, which is arranged in particular on the cleaning module 86 on the immersion element 154. For this fluid connection 148, a counter-connection 160 is provided on the base module 84, which in particular comprises an opening into which the fluid connection 158 can be immersed.

[0182] If the base module 84 and the cleaning module 86 are mechanically connected to one another via the coupling device 146, so that there is a mechanical fixation of the cleaning module 86 to the base module 84 and also a torque coupling, then a fluid-effective connection is also achieved, so that cleaning fluid can flow from the cleaning fluid tank 102, so to speak, mediated via the base module 84 to a nozzle device 162 on the cleaning module 86.

[0183] The nozzle device 162 is arranged, for example, on the cover 140 or integrated into it.

[0184] For example, it is also possible for the nozzle device 162 to be arranged on the dirty fluid tank device 116 or on the receiving chamber 114.

[0185] The floor cleaning machine 80 is designed for operation by a standing operator thanks to the support rod device 90. It functions fundamentally the same as described above. The cleaning module 86, with the dirt fluid tank device 116, pivot bearing device 127, and cleaning roller unit 94, is removable from the base module 84 and can be cleaned, in particular, under a water jet. The shaft stubs 124 can also be cleaned under a water jet.

[0186] A further embodiment of a floor cleaning machine, which is shown in Figures 7 to 9 and designated by 164, comprises a floor head 166 with a base module 168 and a cleaning module 170.

[0187] In one embodiment, a holding rod device is located on the base module 168, which is not shown in Figures 7 to 9.

[0188] It is also possible, in principle, for the floor cleaning machine 184 to be designed as a self-steering and self-propelled floor cleaning machine. A corresponding drive and steering system are then arranged on the base module 168.

[0189] A flap 172 is located on the base module 168. This flap is connected to the base module 168 via a pivot joint 174. A pivot axis 176 of the pivot joint 174 for pivoting the flap 172 on the base module 168 is parallel to a rotation axis of a corresponding cleaning roller unit 94. (The same reference numerals are used for the same elements as in the floor cleaning machine 80.)

[0190] A coupling device 146' is provided, which is basically designed in the same way as described above with reference to the coupling device 146, with a first partial area 148 and a second partial area 150. The second partial area 150 is arranged on the cleaning module 170 and the first partial area 148 on the base module 168.

[0191] When the flap 172 (as shown in Figure 8) is folded back and is thereby folded away from the first partial area 148 of the coupling device 146, the cleaning module 170 with its second partial area

[0192] 150 onto the base module 168.

[0193] When the flap 172 is closed and folded onto the cleaning module 170 (Figure 7), the flap 172 forms a fixing element similar to the fixing element 156, but the fixing element of the floor cleaning machine 164 is integrated into the flap 172. The corresponding fixing element 178 on the flap 172 is indicated in Figures 8 and 9.

[0194] In an embodiment in which the floor cleaning machine 164 is self-steering and self-propelled, one or more sensor units 180 are arranged on the flap 172 and are arranged in an encapsulation and are thereby protected from dirty fluid and generally from liquid.

[0195] This results in a space-saving, integrated arrangement and design of the base head 166.

[0196] The at least one sensor unit 180 comprises, for example, sensors for position detection in the room or for distance detection.

[0197] A further embodiment of a floor cleaning machine according to the invention, which is shown in Figures 10 to 12 and designated by 182, comprises a floor head 184 with a base module 186 and a cleaning module 188.

[0198] In one embodiment, the floor cleaning machine 182 is designed as a self-steering and self-propelled floor cleaning machine, and a corresponding sensor unit 190 for spatial orientation is arranged on the base module 186. The cleaning module 188 holds a cleaning roller unit 192 via a first holder.

[0199] In the embodiment shown, the cleaning roller unit 192 comprises two (partial) cleaning rollers.

[0200] The cleaning module 188 has a base 194. A first holder 196 for the cleaning roller unit 92 and the corresponding sub-rollers is located on the base 194. A pivot bearing device 197 is formed on the cleaning module 188 via the holder 196.

[0201] A portion 198 of a torque transmission device is also located on the base 194.

[0202] A dirty fluid tank device 200 is provided. The dirty fluid tank device 200 is releasably secured to the cleaning module 188 via a second holder 202.

[0203] A sweeping device 204 is located on the dirty fluid tank device 200. The sweeping device 204 points in the direction of the floor 14 to be cleaned and is at a short distance from the installation plane 96 or touches it.

[0204] The sweeping device 204 serves to collect coarse dirt and make it available to the cleaning roller unit 192 for collection.

[0205] On the dirty fluid tank device 200, an outlet device 206 is provided, on which in turn a scraper device 208 is located.

[0206] In one embodiment, a hair comb device 210 is arranged on the base 194. This device has a plurality of pins that act on the cleaning roller unit 192 and, in particular, rest against it and penetrate it. Hair can be collected by the pins. In one embodiment, the base 194 has spaced-apart chambers 212 that are located above the cleaning roller unit 192 and, in particular, above the partial rollers.

[0207] These are closed by respective covers 214, which covers are removable.

[0208] For example, a part of the hair comb device 210 is arranged on the cover 214, and the base 194 has a corresponding through opening 216 so that the corresponding pins of the hair chamber device 210 can act on the cleaning roller unit 192.

[0209] A coupling device is provided, which is fundamentally designed identically to the coupling device 146. This ensures mechanical fixation of the cleaning module 188 to the base module 186 with a fluid connection (for the passage of cleaning fluid) and a torque transmission coupling.

[0210] Otherwise, the floor cleaning machine 182 works as described above.

[0211] A further embodiment of a floor cleaning machine according to the invention, which is shown schematically in Figure 13 and designated by 220, comprises a floor head 222 with a base module 224 and a cleaning module 226.

[0212] A web 228 is arranged on the base module 224. A drive motor 230 is located on the base module 224.

[0213] A drive element 232 is located on the web 228 and is torque-effectively coupled to the drive motor 230 via a torque transmission device 234. A portion of the torque transmission device 234 is located on the web 228. The drive element 232 also forms a pivot bearing for a cleaning roller unit 236.

[0214] The drive element 232 is also part of a coupling device 238 for the torque-effective coupling (and also mechanical fixation) of the cleaning module 226 to the base module 224.

[0215] The cleaning module 226 has a further pivot bearing 240, which is spaced apart from the drive element 232 with respect to a rotation axis 242 of the cleaning roller unit 236 and serves as a counterbearing for the drive element 232. A pivot bearing device 233 on the cleaning module 226 is formed by the further pivot bearing 240. The drive element 232 (which also includes a pivot bearing) is located on the base module 224.

[0216] The cleaning roller unit 236 is suspended or clamped between corresponding pivot bearings via the drive element 232 and the pivot bearing 240 and is rotatably mounted on the cleaning module 226 and the base module 224.

[0217] In particular, the cleaning roller unit 236 is formed by a single cleaning roller.

[0218] A removable dirt fluid tank device 244 is also positioned on the cleaning module 226, associated with the cleaning roller unit 236.

[0219] A sliding guide 246 is provided, via which the cleaning module 226 can be fed onto the drive element 232 in a direction transverse to a longitudinal axis 248 of the floor head 222. The sliding guide 246 is part of the coupling device 238.

[0220] The cleaning module 226 is removably positioned in a free space 250 formed between the web 228 and a front end 252 of the base module 224. The sliding guide 246 is located in the region of the front end 252.

[0221] As mentioned, an insertion direction 254 of the cleaning module 226 is transverse and in particular perpendicular to the longitudinal axis 248 and at least approximately parallel to the rotation axis 242.

[0222] The cleaning module 226 can be inserted into the base module 224 via the sliding guide 246 and guided onto the drive element 232. When a corresponding end position is reached, the cleaning roller unit 236 is coupled to the drive element 232 in a rotationally fixed manner and can be driven by the latter in rotation about the rotation axis 242 during a cleaning operation.

[0223] A type of receiving shaft is formed in the free space 250, via which the cleaning module 226 can be inserted in the insertion direction 254 and can be removed in the opposite direction to the insertion direction 254.

[0224] In the embodiments according to Figures 1 to 12, an insertion direction or removal direction of the corresponding cleaning module 18, 86, 170 from the associated base module 16, 84, 168, 186 is parallel to the longitudinal direction 32.

[0225] In the floor cleaning machine 220, the insertion direction 254 is transverse and in particular perpendicular to the longitudinal axis 248.

[0226] The floor cleaning machine 220 is shown with a hinged lid 256, on which (at least) one encapsulated sensor unit 258 is mounted. This allows a self-propelled and self-steering floor cleaning machine 220 to be easily realized, with corresponding electrical components encapsulated to protect against the effects of liquids. Figure 13 shows possible forward movement directions 38', 38", depending on the design or application. In the forward movement direction 38', the cleaning module 226 follows the base module 224 in this direction. If the forward movement direction is 38", then the base module 224 follows the cleaning module 226 in this direction.

[0227] Embodiments have been described above in which fan-free operation of the floor cleaning machine is provided. In principle, it is also possible for the corresponding floor cleaning machine according to the invention to be provided with a fan device, which is positioned on the base module or a support rod device (which is then located on the base module). The fan device ensures a suction flow. By providing a corresponding suction path, the suction flow acts on the at least one cleaning roller unit during operation of the floor cleaning machine. In particular, direct suction takes place at the cleaning roller unit. (Floor suction can also be provided additionally.)) A corresponding suction channel connection is provided between the blower device and the cleaning module, wherein the suction channel connection in particular comprises a suction path on the base module and a suction path in the cleaning module, wherein in turn by coupling the cleaning module to the base module a fluid-effective connection is automatically provided between the blower device and the cleaning module, which connection is in particular established automatically (and fluid-tight) when the cleaning module is coupled to the base module.

[0228] List of reference symbols

[0229] Floor cleaning machine (first embodiment)

[0230] Floor head to be cleaned

[0231] Basic module

[0232] Cleaning module

[0233] Coupling device first holder

[0234] Pivot bearing device

[0235] Cleaning roller unit

[0236] Rotation axis second holder, 30' dirty fluid tank device

[0237] Longitudinal direction

[0238] Rear end

[0239] Front end, 38', 38" Forward movement direction

[0240] Nozzle device first cleaning roller second cleaning roller

[0241] Torque transmission device

[0242] Drive motor first sub-area second sub-area first lateral side second lateral side electrical circuit arrangement

[0243] Support device

[0244] Blower device

[0245] Support element suction path

[0246] Direction

[0247] separator

[0248] Direction

[0249] Direction

[0250] front end

[0251] Basic module

[0252] Cleaning module

[0253] Rear end

[0254] Dirty fluid tank facility

[0255] Floor cleaning machine

[0256] Ground head

[0257] Basic module

[0258] Cleaning module

[0259] Swivel axis

[0260] Holding rod device

[0261] axis of rotation

[0262] Cleaning roller unit

[0263] Installation level

[0264] bag handle

[0265] Operator panel setup

[0266] Cleaning fluid tank

[0267] Battery setup

[0268] Housing

[0269] Support wheels

[0270] Support device

[0271] base

[0272] Recording chamber

[0273] Dirty fluid tank facility

[0274] Recording room a sub-room b sub-room

[0275] Partial area drive element shaft stub cleaning roller pivot bearing device first holder

[0276] Container first area second area bridge installation level side lid

[0277] Scraper device Mouth device , 146' Coupling device first section second section Opening

[0278] Immersion element Fixing element Fluid connection Counter connection Nozzle device Floor cleaning machine

[0279] Basic module cleaning module flap

[0280] Swivel joint Swivel axis Fixing element Sensor element Floor cleaning machine Floor head

[0281] Basic module cleaning module

[0282] Sensor unit

[0283] Cleaning roller unit

[0284] Basis first holder

[0285] Pivot bearing device

[0286] Sub-area

[0287] Dirty fluid tank device second holder

[0288] Sweeping device

[0289] Mouth device

[0290] Scraper device

[0291] Hair comb device

[0292] chamber

[0293] Lid

[0294] opening

[0295] Floor cleaning machine

[0296] Ground head

[0297] Basic module

[0298] Cleaning module

[0299] web

[0300] drive motor

[0301] drive element

[0302] Pivot bearing device

[0303] Torque transmission device

[0304] Cleaning roller unit

[0305] Coupling device

[0306] Pivot bearing

[0307] axis of rotation

[0308] Dirty fluid tank facility

[0309] Sliding guide

[0310] Longitudinal axis

[0311] Free space front end

[0312] Insertion direction

[0313] Lid

[0314] Sensor unit

Claims

Patent claims 1. Floor cleaning machine, comprising a floor head (12; 82; 184; 222), at least one cleaning roller unit (24; 94; 192; 236), a dirty fluid tank device (30; 30'; 78; 116; 200; 244) and a support device (110) for supporting the floor head (12; 82; 184; 222) on a floor (14) to be cleaned, wherein the support device (110) and the at least one cleaning roller define a mounting plane (96) for the floor head (12; 82; 184; 222) on the floor (14) to be cleaned, characterized in that the floor head (12; 82; 184; 222) has a base module (16; 84; 166; 186; 224) and a cleaning module (18; 86; 170; 226), wherein the cleaning module (18; 86; 170; 226) is detachably connected to the base module (16; 84; 166; 186; 224) via a coupling device (20; 146; 146'; 238), that on the cleaning module (18; 86; 170; 226) the at least one cleaning roller unit (24; 94; 192; 236), a pivot bearing device (23; 127; 197; 233) for rotatably supporting the at least one cleaning roller unit (24; 94; 192; 236) and the dirty fluid tank device (30; 30'; 78; 116; 200; 244), and that the support device (110) is at least partially arranged on the base module (16; 84; 166; 186; 224).

2. Floor cleaning machine according to claim 1, characterized in that the cleaning module (18; 86; 170; 226) follows the base module (16; 84; 166; 186; 224) in a longitudinal direction (32) of the floor head (12; 82; 184; 222), wherein a rotation axis (26) of the at least one cleaning roller unit (24; 94; 192; 236) is oriented transversely and in particular perpendicularly to the longitudinal direction (32).

3. Floor cleaning machine according to claim 2, characterized by at least one of the following: a forward movement direction (38; 38'; 38") of the floor head (12; 82; 184; 222) on the floor (14) to be cleaned is parallel to the longitudinal direction (32); a forward movement direction (38; 38'; 38") of the floor head (12; 82; 184; 222) on the floor (14) to be cleaned is transverse and in particular perpendicular to the rotation axis (26) of the at least one cleaning roller unit (24; 94; 192; 236); a removal direction of the cleaning module (18; 86; 170; 226) from the base module (16; 84; 166; 186; 224) is (i) parallel or (ii) transverse and in particular perpendicular to the longitudinal direction (26).

4. Floor cleaning machine according to one of the preceding claims, characterized by at least one of the following: in a cleaning operation, a liquid-laden action on the floor to be cleaned (14) and a liquid-laden dirty fluid coupling at the floor head (12; 82; 184; 222) takes place only at the cleaning module (18; 86; 170; 226); in a cleaning operation, a liquid-laden dirty fluid flow takes place only at the cleaning module (18; 86; 170; 226); in a cleaning operation, a liquid-laden dirty fluid impingement on the floor head (12; 82; 184; 222) takes place essentially only at the cleaning module (18; 86; 170; 226).

5. Floor cleaning machine according to one of the preceding claims, characterized in that the cleaning module (18; 86; 170; 226) is designed such that it can be cleaned under a water jet after removal from the base module (16; 84; 166; 186; 224).

6. Floor cleaning machine according to one of the preceding claims, characterized in that the cleaning module (18; 86; 170; 226) comprises at least one of the following: a first holder (22; 128; 196) for the at least one cleaning roller unit (24; 94; 192; 236), wherein the at least one cleaning roller unit (24; 94; 192; 236) is in particular removable from the first holder (22; 128; 196); a second holder (28; 202) for the dirty fluid tank device (30; 30'; 78; 116; 200; 244), wherein in particular the dirty fluid tank device (30; 30'; 78; 116; 200; 244) is removable from the second holder (28; 202); a housing; a scraper device (142) for scraping dirt fluid from the at least one cleaning roller unit (24; 94; 192; 236); a hair comb device (210) for picking up hair from the at least one cleaning roller unit (24; 94; 192; 236);a sweeping device (204) for supplying coarse dirt to the at least one cleaning roller unit (24; 94; 192; 236); at least one partial region of a torque transmission device (46; 234) for rotatingly driving the at least one cleaning roller unit (24; 94; 192; 236); a partial region of the coupling device (20; 146; 146'; 238); a nozzle device (162) for applying cleaning fluid to the at least one cleaning roller unit (24; 94; 192; 236) and / or the floor (14) to be cleaned; a partial region of a suction path (63).

7. Floor cleaning machine according to one of the preceding claims, characterized in that at least one of the following is arranged on the base module (16; 84; 166; 186; 224): a housing; an electrical circuit device (58); a fluid-tight capsule, in particular for an electrical circuit device (58); a drive motor (48) for a rotational drive of the at least one cleaning roller unit (24; 94; 192; 236); at least a partial region of a torque transmission device (46; 234) for transmitting a torque from a drive motor (48) to the at least one cleaning roller unit (24; 94; 192; 236); an electrical connection for the electrical power supply; a battery device; at least one sensor unit (258), in particular for self-propelled and self-steering operation of the ground head (12; 82; 184; 222); a partial region of the coupling device (20; 146; 146'; 238); a steering device and / or drive device for a travel movement of the floor head (12; 82; 184; 222); a cleaning fluid tank device (102); a blower device (61); at least one pump which is fluidly connected to a cleaning fluid tank device (102); a valve; a partial region of a suction path (63).

8. Floor cleaning machine according to one of the preceding claims, characterized in that the coupling device (20; 146; 146'; 238) effects a releasable mechanical fixation of the cleaning module (18; 86; 170; 226) to the base module (16; 84; 166; 186; 224). Floor cleaning machine according to claim 8, characterized by at least one of the following: the coupling device (20; 146; 146'; 238) is designed to provide an electrical connection between the base module (16; 84; 166; 186; 224) and the cleaning module (18; 86; 170; 226), which is in particular detachable; the coupling device (20; 146; 146'; 238) is designed to provide a fluid connection for cleaning fluid between the base module (16; 84; 166; 186; 224) and the cleaning module (18; 86; 170; 226), which is in particular detachable; the coupling device (20; 146; 146'; 238) is designed such that it provides a torque transmission between the base module (16; 84; 166; 186; 224) and the cleaning module (18; 86; 170; 226) for the rotational drive of the at least one cleaning roller unit (24; 94; 192; 236), which is in particular releasable; the coupling device (20; 146; 146';238) is designed such that it provides an air flow connection between the base module (16; 84; 166; 186; 224) and the cleaning module (18; 86; 170; 226) for providing a suction flow to the cleaning module (18; 86; 170; 226), which is in particular detachable.

10. Floor cleaning machine according to claim 8 or 9, characterized in that the coupling device (20; 146; 146'; 238) has a first partial area which is seated on the base module (16; 84; 166; 186; 224), and a second partial area which is seated on the cleaning module (18; 86; 170; 226), wherein upon interaction of the first partial area and the second partial area, a coupling is present between the base module (16; 84; 166; 186; 224) and the cleaning module (18; 86; 170; 226).

11. Floor cleaning machine according to one of the preceding claims, characterized in that the coupling has a plurality of spaced coupling points.

12. Floor cleaning machine according to one of the preceding claims, characterized in that the dirty fluid tank device (200) is arranged on the cleaning module (188) in a receiving chamber (212).

13. Floor cleaning machine according to claim 12, characterized by at least one of the following: the receiving chamber (212) has an openable lid (214), wherein, when the lid (214) is open, access to a receiving space of the receiving chamber (212) is provided; the dirty fluid tank device (200) can be removed from the receiving chamber (212) in a direction transverse and in particular perpendicular to a rotation axis (26) of the at least one cleaning roller unit (192) from the cleaning module (188); the dirty fluid tank device (200) can be removed from the cleaning module (188) upwards or downwards relative to a mounting plane side of the at least one cleaning roller unit (192).

14. Floor cleaning machine according to claim 12, characterized by at least one of the following: the receiving chamber is designed as a receiving shaft; the dirty fluid tank device (244) is removable from the cleaning module (226) in a direction parallel to a rotation axis (26) of the at least one cleaning roller unit (236).

15. Floor cleaning machine according to one of the preceding claims, characterized in that a web (228) is arranged on the base module (224), on which a partial region of the coupling device (238) is arranged, wherein at least part of a torque transmission device (234) is arranged on the web (228).

16. Floor cleaning machine according to claim 15, characterized in that the coupling device (238) comprises a sliding guide device (246) along which the cleaning module (226) can be pushed towards the web (228).

17. Floor cleaning machine according to one of the preceding claims, characterized in that the coupling device (238) comprises a rotary bearing (240).

18. Floor cleaning machine according to one of the preceding claims, characterized in that an electronic module is arranged on the base module (16; 84; 166; 186; 224), which has a fluid-tight encapsulation.

19. Floor cleaning machine according to claim 18, characterized in that an openable cover (214) is arranged on the base module (186), wherein the encapsulation sits on the cover (214) or forms the cover (214).

20. Floor cleaning machine according to one of the preceding claims, characterized by a holding rod device (90) which is arranged on the floor head (82), by means of which the floor cleaning machine can be guided by a standing operator over the floor (14) to be cleaned.

21. Floor cleaning machine according to claim 20, characterized by at least one of the following: the holding rod device (90) is pivotable about at least one pivot axis (88) relative to the floor head (82), wherein in particular the pivot axis (88) is oriented parallel to a rotation axis (92) of the at least one cleaning roller unit (94); at least one of the following is arranged on the holding rod device (90): a battery device; a cleaning fluid tank device (102); a portion of a supply device for supplying cleaning fluid to the cleaning module (86); an operator panel device (100); a blower device for generating a suction flow.

22. Floor cleaning machine according to one of claims 1 to 20, characterized by a self-propelled and self-steering design.

23. Floor cleaning machine according to one of the preceding claims, characterized in that at least two spaced support elements are arranged on the base module (16; 84; 166; 186; 224).

24. Floor cleaning machine according to one of the preceding claims, characterized in that the dirty fluid tank device (30; 30'; 78; 116; 200; 244) is designed and attached to the cleaning module (18; 86; 170; 226) is arranged in relation to the at least one cleaning roller unit (24; 94; 192; 236) such that, during cleaning operation, dirty fluid is coupled from the at least one cleaning roller unit (24; 94; 192; 236) into the dirty fluid tank device (30; 30'; 78; 116; 200; 244) without the need for a fan, or that a fan device (61) is provided.

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