Floor cleaning machine

Abstract

Floor cleaning machine, in particular a hand-guided and / or hand-held floor cleaning machine, comprising a carrier device (12), at least one cleaning roller (36) which is arranged on the carrier device (12), is rotatably driven and is provided with a covering (58), a blower device (40) for generating a suction flow, and a suction channel device (42) for the suction flow, which provides at least one suction channel (60) with a fluid-effective connection between the blower device (40) and the at least one cleaning roller (36), wherein the at least one suction channel (60) has at least one opening (72) towards the at least one cleaning roller (36), and the at least one opening (72) has a first opening wall (74) and a spaced-apart second opening wall (76), between which an opening opening (78) is formed,wherein the first mouth wall (74) and / or the second mouth wall (76) rests against the facing (58) of the at least one cleaning roller (36) or projects into it, the cleaning roller (36) comprises a hollow roller (54) with an interior space (56), and a drive for the cleaning roller (36) is positioned in the interior space (56) of the cleaning roller (36).

Description

[0001] This application is a divisional application of European patent application No. 23 150 816.9 of 12 December 2013, to which reference is made in its entirety.

[0002] The invention relates to a floor cleaning machine, in particular a hand-guided and / or hand-held floor cleaning machine, comprising a carrier device, at least one cleaning roller which is arranged on the carrier device, can be driven in rotation and is provided with a covering, a blower device for generating a suction flow, and a suction channel device for the suction flow, which provides at least one suction channel with a fluid-effective connection between the blower device and the at least one cleaning roller, wherein the at least one suction channel has at least one mouth towards the at least one cleaning roller and the at least one mouth has a first mouth wall and a spaced-apart second mouth wall, between which a mouth opening is formed.

[0003] From WO 2010 / 140967 A1 an arrangement for cleaning a dirty surface is known.

[0004] EP 2 177 128 A1 discloses a brush arrangement for a floor cleaning device.

[0005] A cylindrical brush is known from FR 2 797 895 A1.

[0006] From US 2002 / 0194692 A1 a floor cleaning machine with a dispenser for cleaning fluid is known.

[0007] From CH 607 578 a brush device which can be connected to a water pipe is known, in which a brush roller which is permeable to water in the casing area is rotatably mounted on a perforated hollow shaft which can be fed with water.

[0008] From DE 41 17 957 A1 a device for processing a surface is known which has a wiping device with a rag-like wiping element that can be guided over the surface to be cleaned, a moistening device for moistening the wiping element and a suction device for suctioning the wiping element.

[0009] The invention is based on the object of providing a floor cleaning machine of the type mentioned above which delivers an optimized cleaning result while being easy to handle.

[0010] This object is achieved according to the invention in that the first mouth wall and / or the second mouth wall rests against the trim of the at least one cleaning roller or projects into it, that the cleaning roller comprises a hollow roller with an interior space, and that a drive for the cleaning roller is positioned in the interior space of the cleaning roller.

[0011] The fact that at least one outlet wall rests against the bristles of the at least one cleaning roller or protrudes into it (i.e., is immersed in it) results in an optimized suction result. The at least one cleaning roller is guided past the at least one outlet, where a vacuum is applied, i.e., a suction flow is generated, and dirt is sucked in.

[0012] In particular, when at least one cleaning roller is placed on a floor to be cleaned, the first mouth wall is positioned above the second mouth wall with respect to the direction of gravity.

[0013] In particular, an end face of the first mouth wall and / or an end face of the second mouth wall is at least approximately parallel to a rotational axis of the at least one cleaning roller. This results in effective suction. A wiping function with suction can be realized.

[0014] In principle, the first mouth wall can abut against the facing or protrude into it, and the second mouth wall can abut against the facing of the at least one cleaning roller, or be spaced apart from it, or protrude into it. If the second mouth wall abuts against the facing or protrudes into it, the first mouth wall can abut against the facing or protrude into it, or be spaced apart. In particular, the first mouth wall abuts against the facing or protrudes into it, and a direction of rotation of the at least one cleaning roller is such that a specific point of the at least one cleaning roller is first guided past the second mouth wall and then past the first mouth wall.If the second mouth wall rests against the trimmings or projects into them, in particular a direction of rotation is such that a specific point of the at least one cleaning roller is first guided past the first mouth wall and then past the second mouth wall.

[0015] In one embodiment, a contact element is arranged at the mouth, which contact element rests against the facing or projects into it, and which projects transversely away from the first mouth wall or the second mouth wall, wherein a fluid seal is present between the contact element and the corresponding mouth wall. The contact element enlarges the area of ​​contact or projection into the facing and achieves greater fluid tightness, which in turn improves suction. The contact element forms (in cross-section) a type of beak, which projects away from the first mouth wall or the second mouth wall. The at least one cleaning roller is guided past the contact element during rotation.

[0016] In one embodiment, the contact element is located on the first outlet wall. This allows for an improved suction effect to be achieved in a simple manner. A fluid seal between the contact element and the outlet can be easily achieved.

[0017] It is advantageous if the contact element facing the at least one cleaning roller has a curved contour that is adapted to the at least one cleaning roller. In particular, the contour has a circular contour that is adapted, at least with respect to one envelope, to a corresponding circular contour of the at least one cleaning roller. This minimizes the frictional resistance caused by the at least one cleaning roller rotating past the contact element.

[0018] The contact element has a first end spaced from the mouth and a second end positioned at the mouth. The contact element is advantageously designed such that a resulting negative pressure is smaller at the first end than at the second end. This reduces the risk of a "fluid short circuit," through which fluid, and in particular liquid, could be sucked out in the region of the first end. This improves the cleaning result.

[0019] For example, a design for reducing the negative pressure that occurs at the first end compared to the second end can be such that the contact element is made sufficiently long, which then provides an increased friction surface. In one embodiment, the contact element has a first region with the first end and a second region with the second end, wherein a distance of the contact element at the first region to a rotational axis of the at least one cleaning roller is greater than at the second region. As a result, the negative pressure that occurs in the region of the first end can be reduced compared to the region at the second end and the risk of a liquid short circuit is reduced. This design can be achieved in a simple manner by a corresponding surface design of the contact element facing the at least one cleaning roller.For example, the contact element is designed in a step-like manner on the corresponding surface, with the step in particular having a smooth course (without sharp edges).

[0020] It is advantageous if the second outlet wall is arranged in front of the first outlet wall with respect to a direction of rotation of the at least one cleaning roller. A specific area of ​​the cleaning roller is then guided past the second outlet wall and then the first outlet wall as the cleaning roller rotates. This results in effective suction and ease of use. This embodiment results in a short path for supplying dirt particles adhering to the flooring to the outlet. Furthermore, this direction of rotation is advantageous when cleaning from within a room using the corresponding floor cleaning machine.

[0021] In one embodiment, a distance between an end face of the first mouth wall and a rotational axis of the at least one cleaning roller is smaller than a distance between an end face of the second mouth wall and the rotational axis.

[0022] It is advantageous if the opening of at least one outlet has at least an approximately rectangular cross-section. This allows the cleaning roller to be vacuumed from the outside over a large area, resulting in effective dirt extraction.

[0023] It is therefore advantageous if the at least one suction channel is designed to taper towards a separator device. This provides a type of funnel on the suction channel to enable effective dirt extraction from the cleaning roller. A large cross-sectional area can be provided at the mouth and along the further course of the at least one suction channel up to the taper, which is advantageous in terms of flow. The taper near the separator device allows the flow velocity to be increased.

[0024] It is advantageous if at least one cleaning fluid container is provided, which is in fluid communication with the at least one cleaning roller, wherein cleaning fluid is provided on the at least one cleaning roller, in particular via an interior space of the at least one cleaning roller. This allows the cleaning roller and in particular its bristles to be moistened, and a wiping function can be implemented with the floor cleaning machine. Appropriate cleaning fluid is provided via the cleaning fluid container. The cleaning fluid container is arranged on the floor cleaning machine, in particular in a removable manner.

[0025] In one embodiment, the at least one cleaning fluid container is arranged on a user support unit. It can thus be effectively positioned on the floor cleaning machine and positioned above the at least one cleaning roller with respect to the direction of gravity.

[0026] It is advantageous if the blower device is arranged on the support device and / or the suction duct device is arranged on the support device. This results in a simple structural design.

[0027] In one embodiment, the suction channel device comprises a housing in which the at least one suction channel is arranged or formed. The housing can be used, for example, to accommodate a dirty liquid container and / or a separator device. It can also be used, for example, to accommodate a battery device, in particular a rechargeable battery device.

[0028] It is advantageous if an elastic device is provided by which the suction channel device is elastically pressed against the at least one cleaning roller, wherein the elastic device is or comprises, in particular, a spring device. This makes it easy to ensure that the first and / or second outlet wall rests against the lining of the at least one cleaning roller or is pressed into it. This corresponding functionality is ensured even in the event of abrasion of the lining, at least up to a certain threshold.

[0029] In one embodiment, the elastic device is supported on the support device via a first side. The support device then forms a mounting surface for the elastic device.

[0030] It is also possible for the elastic device to be supported on a first side by the blower device or a separator device. The blower device or separator device then forms a mounting surface for the elastic device.

[0031] In one embodiment, the elastic device is supported on the suction channel device via a second side. This exerts a corresponding preload force directly on the suction channel device, which presses it with the first outlet wall against the trim.

[0032] It is also possible for the elastic device to be supported on a second side by the blower device or the separator device, with the blower device or the separator device being connected to the suction duct device, the connection being either a direct connection or a frictional connection. The suction duct device is then pressed against the furring either directly or via frictional connection via the blower device or the separator device.

[0033] It is advantageous to provide a dirty fluid container associated with a separator. This allows the collection of contaminated cleaning fluid. At the separator, air is separated from liquid and solid components in a suction stream.

[0034] It is advantageous if the dirty fluid container is located on the suction duct system. This results in a compact design and minimizes flow paths.

[0035] It is also advantageous if a user holding unit is arranged on the support device, which is pivotally mounted, in particular, on a joint. This allows an operator to easily operate the floor cleaning machine, for example, with one hand. They can push or pull it, thus cleaning a larger floor area while minimizing relocation.

[0036] For example, a pivot axis of the joint is parallel to a rotation axis of the at least one cleaning roller. This results in easy operation.

[0037] In one embodiment, the user holding unit comprises a rod device, for example, with a rod on which a handle is located. This results in a compact design with easy operation.

[0038] It is advantageous if, during a cleaning process, the floor cleaning machine is supported on the floor only by the at least one cleaning roller and is particularly characterized by a design without support wheels. This results in a compact structure. The entire weight of the floor cleaning machine can be supported by the at least one cleaning roller. This design without support wheels prevents abrasion marks on the floor being cleaned.

[0039] It is advantageous if the rotation direction of the at least one cleaning roller is from a line of contact with the floor to be cleaned toward the second outlet wall and then toward the first outlet wall, and in particular, the rotation direction is clockwise when the at least one cleaning roller is placed on the floor. This allows for effective operation, in which the floor cleaning machine is guided out of a room to be cleaned.

[0040] It is particularly advantageous if the at least one cleaning roller is provided with grooves for generating air pulses in a suction stream. Grooves, and in particular spaced-apart grooves, which are rotated through the opening where the suction stream is present, allow short air pulses to be generated. These allow dirt adhering to the trim, and in particular the textile trim, of the cleaning roller to be carried along. This allows an effective cleaning effect to be achieved.

[0041] A groove is formed, in particular, by a region free of or with reduced amounts of debris to create corresponding air pulses in the suction flow. A groove can, in principle, have any shape, such as a slot or a cylinder.

[0042] In particular, a plurality of spaced-apart grooves are provided, which are spaced apart in an axial direction of the at least one cleaning roller and a circumferential direction of the at least one cleaning roller. By appropriately arranging them, dead zones on the at least one cleaning roller can be prevented, and adhering dirt particles are effectively entrained across substantially the entire effective surface of the at least one cleaning roller. A groove can, for example, have a rectangular cross-section or a circular cross-section. Other groove shapes are also possible.

[0043] For example, a groove (particularly with a rectangular cross-section) has a length that is at most 10% of an axial length of the at least one cleaning roller.

[0044] Furthermore, it is advantageous, for example, if a groove (particularly in the case of a rectangular cross-section) has a width which is at most 5% of a circumferential length of the at least one cleaning roller.

[0045] In one embodiment, at least one sweeping lip is arranged on the suction channel device. The at least one sweeping lip allows a sweeping function to be implemented in addition to the wiping function of the floor cleaning machine. By arranging it on the suction channel device, coarse dirt on the floor, for example, which cannot be directly captured by the wiping function of the at least one cleaning roller, can be collected in an area between the at least one sweeping lip and the at least one cleaning roller by the at least one cleaning roller and fed to the outlet with the suction flow.

[0046] In particular, the at least one sweeping lip is arranged and configured such that coarse dirt between the at least one sweeping lip and the at least one cleaning roller is entrained by the at least one cleaning roller and fed to the at least one outlet. This allows additional coarse dirt to be vacuumed away.

[0047] Advantageously, the at least one sweeping lip separates a space behind the at least one cleaning roller and below the suction channel device toward the floor to be cleaned from the at least one cleaning roller when the at least one cleaning roller is placed on the floor. This allows a sweeping function to be implemented and coarse dirt to be removed.

[0048] It is advantageous if the at least one sweeping lip is arranged and / or designed to be movable, and in particular, is designed to be elastic. This allows it to be effectively placed on the floor to be cleaned, removing coarse dirt.

[0049] It is particularly advantageous if an air supply device is provided, which provides fresh air to the at least one cleaning roller. Especially if a sweeping lip is present, the suction power may no longer be sufficient due to insufficient air supply to the outlet. The air supply device ensures that there is sufficient air supply to enable effective extraction even with a sweeping lip.

[0050] The supply air device comprises at least one duct with an outlet-side opening for supply air, which is directed toward the at least one cleaning roller. In particular, the at least one supply air duct is arranged or formed on the suction duct device. Supply air is thus supplied to the outlet for the suction flow in a relatively direct manner to enable effective suction.

[0051] In particular, the at least one outlet-side outlet for supply air is arranged between the at least one outlet for the suction flow and the at least one sweeping lip. This results in effective extraction even when a sweeping function is implemented.

[0052] It is also advantageous if the at least one duct has at least one inlet for supply air, through which supply air can be coupled in. This supply air is taken, for example, from the environment or is process exhaust air or exhaust air from the blower device.

[0053] In one embodiment, the at least one inlet-side opening is arranged on an underside of the suction duct device and, in particular, is arranged at or near an end of the suction duct device associated with the at least one cleaning roller. This allows for a supply of fresh air with a simple design.

[0054] In a further embodiment, the at least one duct is routed along the extraction duct device. This allows supply air to be provided, for example, by the blower device.

[0055] In particular, the at least one duct is then routed to the blower device. For example, exhaust air from the blower device or cooling air from the blower device can then be used as supply air.

[0056] The following description of preferred embodiments, in conjunction with the drawings, serves to further explain the invention. They show: Figure 1 shows a perspective view of an embodiment of a floor cleaning machine according to the invention; Figure 2 shows another perspective view of the floor cleaning machine according to Figure 1 ; Figure 3 a partial side view of the floor cleaning machine according to Figure 1 in the direction A; Figure 4 a sectional view in a plane parallel to the plane of the drawing according to Figure 3 ; Figure 5(a) an enlarged view of an area on a cleaning roller according to Figure 3; Figure 5(b) a schematic representation of a contact pressure of the cleaning roller on a floor to be cleaned as a function of a rotation angle; Figure 6 a schematic representation of a first embodiment of an elastic device; Figure 7 a schematic representation of a second embodiment of an elastic device; Figure 8 a schematic representation of a third embodiment of an elastic device; Figure 9 an enlarged representation of an area on the cleaning roller according to Figure 4 ; Figure 10 a variant of a floor cleaning machine in a partial representation similar to Figure 9 ; Figure 11 a view similar to Figure 5(a) in a further embodiment; Figure 12 a plan view of a part of the floor cleaning machine according to Figure 1 in the direction B; Figure 13 a sectional view along the line 13-13 according to Figure 12 ; Figure 14 an enlarged view of area C according to Figure 9in a variant of an embodiment; Figure 15 a similar representation as in Figure 14 in another variant; and Figure 16 a similar representation as Figure 16 in another variant.

[0057] An embodiment of a floor cleaning machine as it is in the Figures 1 and 2 Shown in an overall view and designated therein by 10, is a hand-guided and hand-held floor cleaning machine. This comprises a support device 12. The support device 12 is designed as a frame 14.

[0058] This frame 14 has a first frame rod 16 and a second frame rod 18. The second frame rod 18 is oriented transversely and in particular perpendicularly to the first frame rod 16 and is fixed to the first frame rod 16.

[0059] The first frame rod 16 and the second frame rod 18 span a plane. An element 20 is attached to the first frame rod 16 and extends beyond this plane. The element 20 supports a joint 22, on which a rod device 24 is attached. In the illustrated embodiment, the rod device 24 comprises a single rod.

[0060] The rod device 24 is pivotably mounted on the support device 12 via the joint 22 about a pivot axis 26. The pivot axis 26 is at least approximately parallel to the first frame rod 16.

[0061] At one end of the rod device 24, which is opposite the end by which the rod device 24 is fixed to the joint 22, there is a handle 28. In one embodiment, the handle 28 comprises a closed bracket 30. It further comprises a grip element 32 at a distance from the bracket 30.

[0062] On the handle 28 there are one or more switches 34 for switching on or off a cleaning operation of the floor cleaning machine 10.

[0063] The rod device 24 with the handle 28 forms a user holding unit, via which a user can hold and guide the floor cleaning machine 10. The rod device 24 is of such a length that a standing user, standing on the floor to be cleaned, can guide and operate the floor cleaning machine 10 without having to bend down.

[0064] In one embodiment, the rod device 24 is designed such that its length and, in particular, the distance between the handle 28 and the joint 22 is lockably adjustable. This allows adaptation to different users.

[0065] A cleaning roller 36 is mounted on the second articulated rod 18 in the region of a front end of the support device 12. The cleaning roller 36 can be driven to rotate about a rotation axis 38. For this purpose, for example, a drive is provided which is positioned in an interior of the cleaning roller 36.

[0066] The rotation axis 38 is in particular parallel to the pivot axis 26.

[0067] A blower device 40 is also located on the support device 12. The blower device 40 generates a suction flow. A suction channel device 42 is arranged on the support device 12 between the blower device 40 and the cleaning roller 36. The suction channel device 42 provides a fluid connection between the cleaning roller 36 and the blower device 40 in order to be able to discharge the suction flow generated by the blower device 40 away from the cleaning roller 36.

[0068] The blower device 40 is assigned a drive 44, in particular an electric motor drive 44. This is also positioned on the support device 12.

[0069] The blower device 40 is associated with a separator device 46, which separates an air portion from a residual portion (liquid with dirt particles) in the suction flow. The separator device 46 is located upstream of the blower device 40 in the suction flow. It is positioned, in particular, on the suction duct device 42.

[0070] The separator device 46, in turn, is assigned a dirty liquid container 48, in which dirty liquid can be received. The dirty liquid container 48 is arranged, in particular, in a removably manner on the support device 12 and, in particular, on the suction channel device 42, so that it can be easily emptied and / or cleaned.

[0071] To clean a floor 50, the cleaning roller 36 is moistened. The floor cleaning machine 10 includes a cleaning fluid container 52. In one embodiment, the cleaning fluid container 52 is arranged on the rod device 24 and is particularly removable for refilling. One or more fluid lines 53 lead from the cleaning container 52 to the cleaning roller 36.

[0072] The suction duct device 42 is the "intermediary" unit between the blower device 40 and the cleaning roller 36. The suction flow is passed through it to carry out a separation in the separator device 46 and to separate an air portion from a residual portion. The suction flow generally contains air as the "carrier medium," with the corresponding vacuum flow being generated by the blower device 40, as well as a liquid portion and a solid portion. Cleaning fluid (especially water, possibly with additives) from the cleaning container 52 moistens the cleaning roller 36, as explained in more detail below. This allows cleaning fluid to be applied to the floor 50 to be cleaned, and dirt adhering to the floor can be softened.Liquid and dissolved dirt or undissolved dirt particles are sucked in and fed through the suction channel device 42 to the separator device 46.

[0073] The cleaning roller 36 comprises (see for example Figure 9 ) a hollow roller 54 with an interior 56. On the hollow roller 54 there is a trimming 58, in particular made of a textile material.

[0074] In one embodiment, the cleaning roller 36 is moistened internally.

[0075] Cleaning fluid is supplied to the interior 56 of the hollow roller 44 via line 53. The hollow roller 54 is provided with corresponding openings leading to the facing 58. This allows cleaning fluid to escape and moisten the facing 58, which in turn can be applied to the floor 50.

[0076] Furthermore, the cleaning roller 52 can be placed and, in particular, slid onto a rotating shaft mounted on the support device 12 via the hollow roller 54 with the interior space 56. The cleaning roller 36 can be fixed to this shaft in a rotationally fixed manner.

[0077] The suction channel device 42 comprises at least one suction channel 60 (cf. Figure 9 ). This suction channel 60 is arranged in the suction channel device 42 and leads from the cleaning roller 36 to the blower device 40.

[0078] In one embodiment, the blower device 40 with drive 44 is fixedly mounted on the support device 12 and in particular on the first frame rod 16. A drive 62 for the cleaning roller 36 is fixedly attached to the second articulated rod 18. In particular, a gear for transmitting torque to the shaft for the cleaning roller 36 is arranged in the second articulated rod 18.

[0079] In this embodiment, the drive 62 and the blower device 40 with drive motor 44 form a unit which is firmly attached to the carrier device 12.

[0080] From the suction duct device 42, a pipe 64 leads from an air side of the separator device 46 from a connection 66 on the suction duct device 42 to a corresponding connection of the blower device 40. Pipe bends 68a and 68b are located on the pipe 64. The pipe 64 and the pipe bends 68a, 68b are arranged outside the suction duct device 42 and the blower device 40. They are arranged, for example, on a side opposite the drive 62.

[0081] In one embodiment, the suction channel device 42 is designed as a housing 70. The at least one suction channel 60 can be arranged in a protected manner within this housing 70. Furthermore, the dirty liquid container 48 and the separator device 46 can be positioned in a protected manner within the housing.

[0082] The suction channel 60 has an opening 72 (see, for example, the Figures 4 and 9), which is open towards the cleaning roller 36. Via this mouth 72, the cleaning roller 36 is vacuumed on an outer side, and the suction flow is coupled into the suction channel 60 and thus into the suction channel device 42. The mouth 72 comprises a first mouth wall 74 and a second mouth wall 76. A mouth opening 78 is formed between the first mouth wall 74 and the second mouth wall 76. The first mouth wall 74 is an upper mouth wall with respect to the second mouth wall 76. When the cleaning roller 36 is placed on the floor 50 to be cleaned for a cleaning process, the first mouth wall 74 lies above the second mouth wall 76 with respect to the direction of gravity.

[0083] Between the first mouth wall 74 and the second mouth wall 76 there are spaced transverse walls 75a, 75b.

[0084] The first mouth wall 74 has a front side 80a. The second mouth wall has a front side 80b (cf. Figure 9 ). The end faces 80a and 80b are at least approximately straight and parallel to each other. In particular, the end faces 80a and 80b are parallel to the rotation axis 38.

[0085] The mouth opening 78 has a rectangular cross-section and preferably extends over the entire length of the cleaning roller 36, on which a trim 58 is arranged. A height of the mouth opening 78 (the distance between the first mouth wall 74 and the second mouth wall 76 at the mouth opening 78) is smaller than a diameter of the cleaning roller 36 and is, for example, at most 10% of the diameter of the cleaning roller 36.

[0086] The mouth opening 78 is arranged in a fourth quadrant 82 with respect to the cleaning roller 36 when the floor cleaning machine 10 is placed on the floor 50 in an operative mode and is supported by the cleaning roller 36, and a coordinate system is accordingly defined which has axes parallel and perpendicular to the floor 50 and in which the center point runs through the point of intersection of the rotation axis 38.

[0087] The first mouth wall 74 rests against the facing 58 of the cleaning roller 36 or projects into it. Figures 3 and 9 an embodiment is shown in which the first mouth wall 74 projects into the trim 58.

[0088] The end face 80a of the first mouth wall 74 lies on the trim 58 or is immersed in the trim 58 ( Figures 4 and 9 ).

[0089] In the illustrated embodiment, the second mouth wall 76 rests against the facing 58; the end face 80b touches the facing 58 without protruding into it. Alternatively, it is also fundamentally possible for the mouth opening 78 to be set back relative to the end face 80b relative to the cleaning roller 36 with the facing 58, i.e., the end face 80b is spaced from the facing 58 or protrudes into the facing 58.

[0090] The suction channel 60 leads from the mouth 72 to the connection 66.

[0091] In one embodiment ( Figures 14 to 16 ), a contact element 200 is arranged at the mouth 72. In one embodiment, this contact element 200 is arranged on the first mouth wall 74, whereby a fluid seal is established between the first mouth wall 74 and the contact element 200. The contact element 200 points transversely away from the first mouth wall 74.

[0092] The contact element 200 projects into the facing 58 of the cleaning roller 36. It dips into the facing 58 with a lower region.

[0093] In the system element 200, the immersion area is a sub-area of ​​the system element 200.

[0094] A contour 202 of the contact element 200 is adapted to the cleaning roller 36. In particular, the contour 202 facing the cleaning roller 36 is curved with the same curvature as the cleaning roller 36.

[0095] The contact element 200 ensures improved fluid coupling into the orifice 72.

[0096] In another embodiment ( Figure 15) a contact element 204 is provided, which is seated on the first mouth wall 74 and projects transversely therefrom. This contact element 204 has a first end 206, which is spaced apart from the first mouth wall 74. It also has a second end 208, which lies on the mouth 72 and thus on the mouth wall 74. The contact element 204 extends between the first end 206 and the second end 208.

[0097] The contact element 204 is not uniformly high (in cross-section) between the first end 206 and the second end 208. It has a first region 210, at which the first end 206 is located. This first region 210 transitions into a second region 212 and, in particular, transitions continuously, with the second end 208 being located in the second region 212. An underside 214 of the contact element 204 is at a greater distance from the rotational axis 38 of the cleaning roller 36 in the first region 210 than in the second region 212.

[0098] Essentially, a negative pressure is present at the contact element 200 or 204. Due to the design with the first region 210 and the second region 212, the negative pressure in the region of the first end 206 is reduced compared to the negative pressure in the region of the second end 208. This improves the suction effect, since, in particular, the risk of a fluid short circuit (the drawing out of fluid in the region of the first end 206) is reduced.

[0099] Advantageously, the contact element 200 or the contact element 204 have a length (between the first end 206 and the second end 208) which is greater than a corresponding opening length of the mouth 72.

[0100] In a further embodiment, which is shown in Figure 16 As shown schematically, a contact element 216 is arranged on the first mouth wall 74. This is completely immersed in the trim 58 of the cleaning roller 36.

[0101] This contact element 216 has a first region 220 at a first end 218 and a second end 222 at the first mouth wall 74, which is formed in a second region 224. In the first region 220, the contact element 216, facing the cleaning roller 36, is at a greater distance from the rotation axis 38 than in the second region 224.

[0102] In this embodiment, both the first region 220 and the second region 224 are completely immersed in the trim 58.

[0103] The suction channel 60 tapers in a region toward the separator device 46. This forms a type of funnel 83 on the separator device 46, in order to, on the one hand, achieve effective suction over the entire length of the cleaning roller 36 and, on the other hand, to increase the flow velocity for entry into the separator device.

[0104] In one embodiment, the cleaning roller 36 is driven in rotation with a rotation direction 84. The rotation of the cleaning roller 36 and the operation of the blower device 40 are simultaneously switched via the switch 34. The corresponding drive 62 for the rotation of the cleaning roller 36 and the drive 44 receive their drive energy, for example, from a rechargeable battery device, which is arranged, for example, in the housing 70 of the suction channel device 42 (not shown in the figures), or from mains power.

[0105] The direction of rotation 84 is such that a contact line 86 ( Figure 5(a) ) of the cleaning roller 36 on the floor 50 rotates away from the floor 50 toward the mouth 72. The direction of rotation 84 is such that, with respect to this, the second mouth wall 76 lies in front of the first mouth wall 74.

[0106] The direction of rotation 84, when the cleaning roller 36 is placed on the floor 50 during proper operation, is a clockwise rotation for a user who is standing on the floor 50.

[0107] By arranging the orifice 72 in the fourth quadrant 82, dirt carried from the floor 50 is passed through the third quadrant 88 and fed to the orifice 72 in the fourth quadrant 82.

[0108] In an alternative embodiment, the direction of rotation is opposite to the direction of rotation 84, i.e., the rotation is counterclockwise. In this embodiment, the second mouth wall 76 abuts the facing 58 or protrudes into it. The first mouth wall 74 can then abut the facing 58, be spaced apart from it, or protrude into it. In this embodiment, dirt is picked up, the cleaning roller 36 then rotates from the second quadrant into the first quadrant and from there into the fourth quadrant, and suction takes place at the mouth 72.

[0109] The rotation speed of the cleaning roller 36 is preferably in the range between approximately 200 and 400 revolutions per minute. The contact pressure on the cleaning roller 36 is, for example, in the order of approximately 6 kg.

[0110] In Figure 5(b)The diagram shows the pressure force curve for a cleaning roller 36 with textile trim 58 as a function of a rotational position. The angle of rotation 0 refers to the line 86, as shown in Figure 5(a) is shown. At a rotation angle of 0, it touches the floor 50. This is where the greatest contact pressure is present. This causes a high line pressure and thus also the highest water concentration. Accordingly, dirt on the floor 50 is softened. If the cleaning roller 36 is rotated further, the contact pressure and thus also the water concentration decreases. The floor 50 can then be further dried by the cleaning roller 36.

[0111] This makes it possible to operate the cleaning roller 36 at a relatively low speed. This enhances the cleaning performance and keeps residual moisture on the floor to a minimum. The floor 50 is protected even when there is a lack of cleaning fluid, thus reducing the risk of burning.

[0112] The suction channel device 42 with the mouth 72 is connected via an elastic device 90 ( Figure 6 ) is pressed against the cleaning roller 36 and is thus kept pre-tensioned. Figure 6This is shown schematically. The elastic device 90 is supported on the carrier device 12 via a first side 92 and on the separator device 46 via a second side 94. In the corresponding exemplary embodiment, the separator device 46 and the suction channel device 42 form a unit. The separator device 46 and the suction channel device 42 are directly connected to one another. As a result, the suction channel device 42, supported on the carrier device 12 by the elastic device 90, is pressed against the cleaning roller 36.

[0113] These in Figure 6 The arrangement shown schematically corresponds to the arrangement in the floor cleaning machine 10 according to the Figures 1 and 2 .

[0114] The elastic device 90 is formed by a spring device, for example, with one or more coil springs or leaf springs. The corresponding elastic device 90 is supported by the blower device 40.

[0115] In an alternative embodiment ( Figure 7), the separator device 46 and the suction duct device 42 are separate. The elastic device 90, with one or more springs, is supported on the blower device 40 via the first side 92. It is supported on the separator device 46 via the second side 94 and presses it towards the cleaning roller 36 via a corresponding preload. The separator device 46 and the suction duct device 42 are connected to one another; however, the connection is not direct, but rather a frictional connection. The separator device 46 therefore acts with a corresponding contact force on the suction duct device 42 and presses it against the cleaning roller 36.

[0116] In another embodiment ( Figure 8) the elastic device 90 is supported via the first side 92 on the carrier device 12 (or the blower device 40 or the separator device 46) and via the second side 94 it is supported directly on the suction channel device 42 and presses this directly against the cleaning roller 36 in order to generate the corresponding pretension.

[0117] In one embodiment (in particular Figures 9 to 11 ) the cleaning roller 36 is assigned (at least) one sweeping lip 96. The sweeping lip 96 is seated in a receptacle 98 ( Figures 9 and 10 (The sweeping lip is not shown in these figures). The floor cleaning machine 10 has a front end 100 on the cleaning roller 36. The sweeping lip 96 is arranged behind the cleaning roller 36 relative to this front end 100. It is fixed to an underside of the suction duct device 42.

[0118] The sweeping lip 96 closes off a space 102 between a bottom side 104 of the suction channel device 42, which is opposite the first mouth wall 74, and the cleaning roller 36.

[0119] A normal operating mode of the floor cleaning machine 10 is that it is pushed, i.e. pushed forward. The corresponding direction is shown in Figure 1 shown by the arrow with reference number 106. The sweeping lip 96 is designed such that it rests on the floor 50, thereby sweeping up coarse dirt. This coarse dirt in a space 108 between the sweeping lip 96 and the cleaning roller 36 is carried along by the cleaning roller 36 with its direction of rotation 84 and fed to the opening 72, where it can be vacuumed away. Coarse dirt can also be vacuumed away through the sweeping lip 96.

[0120] The sweeping lip 96 is in particular arranged and / or designed to be movable. This is shown in Figure 11indicated by the arrow with the reference numeral 110. The movable configuration is achieved, for example, by a rubber configuration with a correspondingly elastic rubber material. Alternatively or additionally, the sweeping lip 96 can also be arranged in a movable manner, such as pivotably, and in particular can be arranged movably on the suction channel device 42. For example, the sweeping lip 96 is then made of a correspondingly hard rubber material.

[0121] In order to obtain an optimized suction at the mouth 72 even in the presence of a sweeping lip 96, the floor cleaning machine 10 has an air supply device 112 (see Figures 9 and 10 ). The air supply device 112 provides additional air supply to the cleaning roller 36 at or near the opening 72 in order to enable optimized suction.

[0122] In one embodiment ( Figure 9), the supply air device comprises (at least) one duct 114, which is arranged in the extraction duct device 42. This duct 114 has an inlet opening 116 for coupling in supply air and an outlet opening 118 for coupling out supply air that was coupled in via the inlet opening 116.

[0123] The inlet-side opening 118 is arranged on the underside 104 of the suction channel device 42 at a distance from the cleaning roller 36. The outlet-side opening 118 points toward the cleaning roller 36. Relative to the direction of rotation 84, the outlet-side opening 118 is arranged in front of the opening 72.

[0124] The outlet-side orifice 118 is located in particular in the fourth quadrant 82. It is located near the orifice 72.

[0125] In one embodiment, the end face 80b of the second mouth wall 76 also forms an end face of a wall in which a mouth opening of the outlet-side mouth 118 is located.

[0126] Supply air can then be coupled in from the room 102 and fed to the cleaning roller 36.

[0127] In another embodiment ( Figure 10 ), the supply air device 112 has (at least) one duct 120, which is connected on the inlet side with a corresponding opening (in Figure 10 not shown) is coupled to the blower device 40. For example, cooling air or exhaust air from the blower device 40 is used as supply air and then supplied by the blower device 40 through the channel 120 to the cleaning roller 36. The channel 120 then runs in particular along the suction channel device 42.

[0128] An outlet-side orifice 118 is basically arranged as described above with reference to the embodiment according to Figure 9 described.

[0129] In one embodiment ( Figures 12 and 13 ), the cleaning roller 36 is provided with grooves 122. Such a groove is formed in the facing 58. A groove 122 is formed, for example, by being a recess in the facing 58, at which no facing is arranged or at which a height of the facing 58 above the hollow roller 54 is lower than outside the corresponding groove 122.

[0130] In the exemplary embodiment, the groove is shown with a rectangular cross-section. The corresponding groove, as a recess in the facing 58, can also have a different shape. For example, it can have a circular cross-section or another cross-sectional shape.

[0131] Such a groove 122 then has a space 124.

[0132] The cleaning roller 36 has a plurality of grooves 122 which are spaced apart in an axial direction 126 (which is parallel to the rotation axis 38) and spaced apart in the circumferential direction 128.

[0133] The cleaning roller 36 is structured by the grooves 122. As the cleaning roller 36 rotates, a short air pulse is generated at each of the individual grooves 122 as the suction stream passes through the opening 72. This air pulse can entrain contaminants that have become entangled in the bristles 58.

[0134] In particular, the grooves 122 are evenly distributed on the cleaning roller 36 with respect to the circumferential direction 128 and the axial direction 126 in order to largely prevent dead zones with regard to the entrainment of contaminants.

[0135] For example, with a rectangular cross-section of a groove 122, a length of a groove 122 in the axial direction 126 is at most 10% of the length of the cleaning roller 36 with trim 58 in this axial direction 126.

[0136] Furthermore, it is advantageous if, with a rectangular cross-section of a groove 122, a width of a groove 122 in the circumferential direction 128 is at most 5% of a total circumference of the cleaning roller 36 on a surface of the facing 58.

[0137] During operation, the floor cleaning machine 10 rests only on the cleaning roller 36. In particular, the floor cleaning machine 10 is designed without support wheels. This prevents abrasion marks caused by support wheels.

[0138] The floor cleaning machine 10 functions as follows: During a cleaning process, the floor cleaning machine 10 is operated in such a way that a rotation of the cleaning roller 36 in the rotation direction 84 is driven by a corresponding drive. The blower device 40 ensures a corresponding negative pressure to provide a suction flow.

[0139] The cleaning roller 36 is moistened from the inside with cleaning fluid from the cleaning fluid container 52, moistening the filling 58. Suction occurs at the opening 72 through the suction channel device 42 on an outer side of the cleaning roller 36.

[0140] The speed of the cleaning roller 36 is set so that water droplets are largely prevented from being thrown off the cleaning roller 36.

[0141] The direction of rotation 84 is preferably directed toward an operator holding the floor cleaning machine 10 by the user holding unit. This allows for effective normal operation, in which cleaning is carried out from a room to be cleaned.

[0142] The suction channel device 42 with the opening 72 is pressed against the cleaning roller 36 by the elastic device 90 and, in particular, by spring force, so that effective suction occurs. In particular, the first opening wall 74 rests against the trimming 58 or penetrates it.

[0143] The sweeping lip 96 provides a sweeping function for particles that are not directly picked up by the cleaning roller 36. The cleaning roller 36 is a wiping roller. The sweeping lip 96 ensures that even coarse dirt reaches the outlet 72 by being carried along by the cleaning roller 36.

[0144] Generally, if the sweeping lip 96 rests against the floor 50 to be cleaned, it impedes the air supply to the outlet 72. The air supply device 112 ensures a sufficient air supply. Air can then be supplied from the environment, or process exhaust air or blower exhaust air can be supplied. This, in turn, enables good coarse dirt collection with sufficient residual moisture content.

[0145] The cleaning roller 36 rests on the floor 50. The highest contact pressure prevails at a contact line, and the largest amount of cleaning fluid is delivered there, which in turn can soften dirt on the floor 50. The contact pressure outside this contact line 86 is correspondingly lower, and the cleaning fluid concentration is therefore also lower. The cleaning roller 36 can then dry the floor 50 further.

[0146] During a cleaning process, the entire weight of the device rests on the cleaning roller 36.

[0147] The cleaning roller 36 is structured by the grooves 122. This creates short air pulses as the suction stream passes through the orifice 72, allowing for the removal of contaminants caught on the bristles 58.

[0148] A first embodiment is a floor cleaning machine, in particular a hand-guided and / or hand-held floor cleaning machine, comprising a carrier device (12), at least one cleaning roller (36) which is arranged on the carrier device (12), is rotatably driven and is provided with a covering (58), a blower device (40) for generating a suction flow, and a suction channel device (42) for the suction flow, which provides at least one suction channel (60) with a fluid-effective connection between the blower device (40) and the at least one cleaning roller (36), wherein the at least one suction channel (60) has at least one opening (72) towards the at least one cleaning roller (36), and the at least one opening (72) has a first opening wall (74) and a spaced-apart second opening wall (76), between which an opening opening (78) is formed,wherein, when at least one cleaning roller (36) is placed on a floor (50) to be cleaned, the first mouth wall (74) is positioned above the second mouth wall (76) with respect to the direction of gravity (g), characterized in that the first mouth wall (74) and / or the second mouth wall (76) rests against the facing (58) of the at least one cleaning roller (36) or projects into it.

[0149] In a second embodiment of the floor cleaning machine of the first embodiment, an end face (80a) of the first mouth wall (74) and / or an end face (80b) of the second mouth wall (76) is at least approximately parallel to a rotation axis (38) of the at least one cleaning roller (36).

[0150] In a third embodiment of the floor cleaning machine of the first or second embodiment, the first mouth wall (74) rests against the trim (58) or projects into it and the second mouth wall (76) rests against the trim (56) of the at least one cleaning roller (36) or is spaced from it or projects into it or the second mouth wall (76) rests against the trim (56) or projects into it and the first mouth wall lies (74) rests against the trim (56), is spaced from it or projects into it.

[0151] In a fourth embodiment of the floor cleaning machine according to one of the above embodiments, a contact element (200; 204; 216) is arranged on the mouth (72), which contact element rests against the trim (58) or projects into it, and which projects transversely away from the first mouth wall (74) or the second mouth wall (76), wherein a fluid seal is present between the contact element (200; 204; 216) and the corresponding mouth wall (74; 76).

[0152] In a fifth embodiment of the floor cleaning machine of the fourth embodiment, the contact element (200; 204; 216) is located on the first mouth wall (74).

[0153] In a sixth embodiment of the floor cleaning machine of the fourth or fifth embodiment, the contact element (200; 204; 216) facing the at least one cleaning roller (36) has a curved contour which is adapted to the at least one cleaning roller (36).

[0154] In a seventh embodiment of the floor cleaning machine of the fourth or sixth embodiment, the contact element (204; 216) has a first end (206; 218) which is spaced from the mouth (72) and has a second end (208; 222) which is positioned at the mouth (72), and the contact element (204; 216) is designed such that a resulting negative pressure at the first end (206; 218) is smaller than at the second end (208; 222).

[0155] In an eighth embodiment of the floor cleaning machine of the seventh embodiment, the contact element (204; 216) has a first region (210; 220) with the first end (206; 218) and a second region (212; 224) with the second end (208; 222), wherein a distance of the contact element (204; 216) at the first region (210; 220) to a rotation axis (38) of the at least one cleaning roller (36) is greater than at the second region (212; 224).

[0156] In a ninth embodiment of the floor cleaning machine according to one of the above embodiments, the second mouth wall (76) is arranged in front of the first mouth wall (74) with respect to a direction of rotation (84) of the at least one cleaning roller (36).

[0157] In a tenth embodiment of the floor cleaning machine according to one of the above embodiments, a distance between an end face (80a) of the first mouth wall (74) and a rotation axis (84) of the at least one cleaning roller (36) is smaller than a distance between an end face (80b) of the second mouth wall (76) and the rotation axis (84).

[0158] In an eleventh embodiment of the floor cleaning machine according to one of the above embodiments, the mouth opening (78) of the at least one mouth (72) has at least approximately a rectangular cross-section.

[0159] In a twelfth embodiment of the floor cleaning machine according to one of the above embodiments, the at least one suction channel (60) is designed to taper in cross section towards a separator device (46).

[0160] In a thirteenth embodiment of the floor cleaning machine according to one of the above embodiments, at least one cleaning liquid container (52) is provided, which is in fluid connection with the at least one cleaning roller (36), wherein cleaning liquid is provided on the at least one cleaning roller (36), in particular via an interior space (56) of the at least one cleaning roller (36).

[0161] In a fourteenth embodiment of the floor cleaning machine of the thirteenth embodiment, the at least one cleaning liquid container (52) is arranged on a user holding unit.

[0162] In a fifteenth embodiment of the floor cleaning machine according to one of the above embodiments, the blower device (40) is arranged on the carrier device (12) and / or the suction channel device (42) is arranged on the carrier device (12).

[0163] In a sixteenth embodiment of the floor cleaning machine according to one of the above embodiments, the suction channel device (42) comprises a housing (70) in which the at least one suction channel (60) is arranged or formed.

[0164] In a seventeenth embodiment of the floor cleaning machine according to one of the above embodiments, an elastic device (90) is provided, by means of which the suction channel device (42) is elastically pressed against the at least one cleaning roller (36), wherein the elastic device (90) is or comprises in particular a spring device.

[0165] In an eighteenth embodiment of the floor cleaning machine of the seventeenth embodiment, the elastic device (90) is supported on the carrier device (12) via a first side (92).

[0166] In a nineteenth embodiment of the floor cleaning machine of the seventeenth embodiment, the elastic device (90) is supported via a first side (12) on the blower device (40) or a separator device (46).

[0167] In a twentieth embodiment of the floor cleaning machine of the eighteenth or nineteenth embodiment, the elastic device (90) is supported on the suction channel device (42) via a second side (94).

[0168] In a twenty - first embodiment of the floor cleaning machine of the eighteenth embodiment, the elastic device (90) abuts on a second side (94) against the blower device (40) or the separator device (46), wherein the blower device (40) is connected to the suction channel device (42) or the separator device (46), and the connection is a direct connection or a frictional connection.

[0169] In a twenty - second embodiment of the floor cleaning machine according to one of the above embodiments, a dirty liquid container (48) is provided, which is assigned to a separator device (46).

[0170] In a thirty - third embodiment of the floor cleaning machine of the twenty - second embodiment, the dirty liquid container (48) is arranged on the suction channel device (42).

[0171] In a twenty-fourth embodiment of the floor cleaning machine according to one of the above embodiments, a user holding unit is arranged on the carrier device (12), which is arranged pivotably in particular on a joint (22).

[0172] In a twenty-fifth embodiment of the floor cleaning machine of the twenty-fourth embodiment, a pivot axis (26) of the joint (22) is oriented parallel to a rotation axis (38) of the at least one cleaning roller (36).

[0173] In a twenty-sixth embodiment of the floor cleaning machine of the twenty-fourth or twenty-fifth embodiment, the user holding unit comprises a rod device (24) on which a handle (28) is seated.

[0174] In a twenty-seventh embodiment of the floor cleaning machine according to one of the above embodiments, during a cleaning process the floor cleaning machine is supported on the floor (50) only via the at least one cleaning roller (36) and in particular a design without support wheels is provided.

[0175] In a twenty-eighth embodiment of the floor cleaning machine according to one of the above embodiments, a direction of rotation (84) of the at least one cleaning roller (36) is from a line of contact (86) with the floor (50) to be cleaned towards the second mouth wall (76) and then towards the first mouth wall (74) and in particular the direction of rotation (84) is clockwise when the at least one cleaning roller (36) is placed on the floor (50).

[0176] In a twenty-ninth embodiment of the floor cleaning machine according to one of the above embodiments, the at least one cleaning roller (36) is provided with grooves (122) for generating air pulses in a suction flow.

[0177] In a thirtieth embodiment of the floor cleaning machine of the twenty-ninth embodiment, a groove (122) is formed by a litter-free or litter-reduced area.

[0178] In a thirty-first embodiment of the floor cleaning machine of the twenty-ninth or thirtieth embodiment, a plurality of spaced grooves (122) are provided which are spaced apart in an axial direction (126) of the at least one cleaning roller (36) and in a circumferential direction (128) of the at least one cleaning roller (36).

[0179] In a thirty-second embodiment of the floor cleaning machine of the twenty-ninth to thirty-first embodiments, a groove (122) has a length which is at most 10% of an axial length of the at least one cleaning roller (36).

[0180] In a thirty-third embodiment of the floor cleaning machine of the twenty-ninth to thirty-second embodiments, a groove (122) has a width which is at most 5% of a circumferential length of the at least one cleaning roller (36).

[0181] In a thirty-fourth embodiment of the floor cleaning machine according to one of the above embodiments, at least one sweeping lip (96) is arranged on the suction channel device (42).

[0182] In a thirty-fifth embodiment of the floor cleaning machine of the thirty-fourth embodiment, the at least one sweeping lip (96) is arranged and designed such that coarse dirt between the at least one sweeping lip (96) and the at least one cleaning roller (36) is entrained by the at least one cleaning roller (36) and fed to the at least one opening (72).

[0183] In a thirty-sixth embodiment of the floor cleaning machine of the thirty-fourth or thirty-fifth embodiment, the at least one sweeping lip (96) separates a space (102) behind the at least one cleaning roller (36) and below the suction channel device (42) towards the floor (50) to be cleaned from the at least one cleaning roller (36) when the at least one cleaning roller (36) is placed on the floor (50).

[0184] In a thirty-seventh embodiment of the floor cleaning machine of the thirty-fourth to thirty-sixth embodiments, the at least one sweeping lip (96) is arranged and / or designed to be movable and, in particular, is designed to be elastic.

[0185] In a thirty-eighth embodiment of the floor cleaning machine of the thirty-fourth to thirty-seventh embodiments, an air supply device (112) is provided, by means of which air supply is provided to the at least one cleaning roller (36).

[0186] In a thirty-ninth embodiment of the floor cleaning machine of the thirty-eighth embodiment, the supply air device has at least one duct (114; 120) with at least one outlet-side opening (118) for supply air, which is directed towards the at least one cleaning roller (36), wherein in particular the at least one duct (114; 120) for supply air is arranged or formed on the suction duct device (42).

[0187] In a fortieth embodiment of the floor cleaning machine of the thirty-ninth embodiment, the at least one outlet-side opening (118) for supply air is arranged between the at least one opening (72) for the suction flow and the at least one sweeping lip (96).

[0188] In a forty-first embodiment of the floor cleaning machine of the thirty-ninth or fortieth embodiment, the at least one channel (114; 120) has at least one inlet-side opening (116) for supply air, via which supply air can be coupled in.

[0189] In a forty-second embodiment of the floor cleaning machine of the forty-first embodiment, the at least one inlet-side opening (116) is arranged on an underside (104) of the suction channel device (42) and is arranged in particular on or near an end of the suction channel device (42) associated with the at least one cleaning roller (36).

[0190] In a forty-third embodiment of the floor cleaning machine of the forty-first embodiment, the at least one channel (120) is guided along the suction channel device (42).

[0191] In a forty-fourth embodiment of the floor cleaning machine of the forty-first or forty-third embodiment, the at least one channel (120) is led to the blower device (40). List of reference symbols

[0192] 10Floor cleaning machine 12Support device 14Frame 16First frame rod 18Second frame rod 20Element 22Joint 24Rod device 26Pivot axis 28Handle 30Bail 32Handle element 34Switch 36Cleaning roller 38Rotation axis 40Blower device 42Suction duct device 44Drive 46Separator device 48Dirt-fluid container 50Floor 52Cleaning fluid container 54Hollow roller 56Interior 58Filling 60Suction duct 62Drive 64Pipe 66Connection 68aPipe bend 68bPipe bend 70Housing 72Mouth 74First mouth wall 75aCross wall 75bCross wall 76Second mouth wall 78 Outlet opening 80a Front side 80b Front side 82 Fourth quadrant 83 Funnel 84 Rotation direction 86 Contact line 88 Third quadrant 90 Elastic device 92 First side 94 Second side 96 Sweeping lip 98 Receptacle 100 Front end 102 Space 104 Bottom side 106 Arrow 108 Space 110 Arrow 112 Supply air device 114 Duct 116 Inlet side outlet 118 Outlet side outlet 120 Duct 122 Groove 124 Space 126 Axial direction128Circumferential direction 200Contact element 202Contour 204Contact element 206First end 208Second end 210First area 212Second area 214Bottom 216Contact element 218First end 220First area 222Second end 224Second area

Claims

1. A floor cleaning machine, in particular a hand-guided and / or hand-held floor cleaning machine, comprising a support device (12), at least one cleaning roller (36) which is arranged on the support device (12), is rotatably driven and is provided with a covering (58), a blower device (40) for generating a suction flow, and a suction channel device (42) for the suction flow, which provides at least one suction channel (60) with a fluid-effective connection between the blower device (40) and the at least one cleaning roller (36), wherein the at least one suction channel (60) has at least one opening (72) towards the at least one cleaning roller (36), and the at least one opening (72) has a first opening wall (74) and a spaced-apart second opening wall (76), between which an opening opening (78) is formed, characterized in that ​the first mouth wall (74) and / or the second mouth wall (76) rests against the facing (58) of the at least one cleaning roller (36) or projects into it, that the cleaning roller (36) comprises a hollow roller (54) with an interior space (56), and that a drive for the cleaning roller (36) is positioned in the interior space (56) of the cleaning roller (36).

2. Floor cleaning machine according to claim 1, characterized in that when at least one cleaning roller (36) is placed on a floor (50) to be cleaned, the first mouth wall (74) is positioned above the second mouth wall (76) with respect to the direction of gravity (g).

3. Floor cleaning machine according to claim 1 or 2, characterized in that an end face (80a) of the first mouth wall (74) and / or an end face (80b) of the second mouth wall (76) is at least approximately parallel to a rotation axis (38) of the at least one cleaning roller (36).

4. Floor cleaning machine according to one of the preceding claims, characterized in that the first mouth wall (74) rests against the facing (58) or projects into it and the second mouth wall (76) rests against the facing (56) of the at least one cleaning roller (36) or is spaced from it or projects into it or that the second mouth wall (76) rests against the facing (56) or projects into it and the first mouth wall (74) rests against the facing (56), is spaced from it or projects into it.

5. Floor cleaning machine according to one of the preceding claims, characterized in that the second mouth wall (76) is arranged in front of the first mouth wall (74) with respect to a direction of rotation (84) of the at least one cleaning roller (36).

6. Floor cleaning machine according to one of the preceding claims, characterized in thata distance of an end face (80a) of the first mouth wall (74) from a rotational axis (84) of the at least one cleaning roller (36) is smaller than a distance of an end face (80b) of the second mouth wall (76) from the rotational axis (84).

7. Floor cleaning machine according to one of the preceding claims, characterized in that the mouth opening (78) of the at least one mouth (72) has at least approximately a rectangular cross-section.

8. Floor cleaning machine according to one of the preceding claims, characterized in that the at least one suction channel (60) is tapered in cross-section towards a separator device (46).

9. Floor cleaning machine according to one of the preceding claims, characterized in thatat least one cleaning fluid container (52) which is in fluid communication with the at least one cleaning roller (36), wherein cleaning fluid is provided on the at least one cleaning roller (36), in particular via an interior space (56) of the at least one cleaning roller (36), and in particular ​ the at least one cleaning fluid container (52) is arranged on a user holding unit.

10. Floor cleaning machine according to one of the preceding claims, ​ the blower device (40) is arranged on the support device (12) and / or that the suction channel device (42) is arranged on the support device (12).

11. Floor cleaning machine according to one of the preceding claims, ​ a dirty liquid container (48) which is associated with a separator device (46), and in particular ​the dirty liquid container (48) is arranged on the suction channel device (42).

12. Floor cleaning machine according to one of the preceding claims, ​ a user holding unit is arranged on the support device (12), which is pivotally arranged in particular on a joint (22).

13. Floor cleaning machine according to claim 12, ​ a pivot axis (26) of the joint (22) is oriented parallel to a rotation axis (38) of the at least one cleaning roller (36).

14. Floor cleaning machine according to claim 12 or 13, ​ the user holding unit comprises a rod device (24) on which a handle (28) is located.

15. Floor cleaning machine according to one of the preceding claims, ​a direction of rotation (84) of the at least one cleaning roller (36) is from a line of contact (86) with the floor (50) to be cleaned towards the second mouth wall (76) and then towards the first mouth wall (74), and in particular the direction of rotation (84) is clockwise when the at least one cleaning roller (36) is placed on the floor (50).

16. Floor cleaning machine according to one of the preceding claims, ​ at least one sweeping lip (96) is arranged on the suction channel device (42), and in particular ​ the at least one sweeping lip (96) is arranged and designed such that coarse dirt between the at least one sweeping lip (96) and the at least one cleaning roller (36) is carried along by the at least one cleaning roller (36) and fed to the at least one opening (72).

17. Floor cleaning machine according to claim 18, ​the at least one sweeping lip (96) separates a space (102) behind the at least one cleaning roller (36) and below the suction channel device (42) towards the floor (50) to be cleaned from the at least one cleaning roller (36) when the at least one cleaning roller (36) is placed on the floor (50), and in particular ​ the at least one sweeping lip (96) is arranged and / or designed to be movable and is in particular designed to be elastic.

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