Mobile floor-cleaning device

Abstract

The invention relates to a mobile floor-cleaning device, comprising a chassis (110) for moving on a floor surface (108), a cleaning device (114) having at least one cleaning tool (116) for cleaning the floor surface (108), preferably a storage container (112) for a cleaning liquid, which can be applied to the floor surface (108), a dirty liquid container (130) having a container interior (132), and a dirt-receiving device (124) for receiving dirty cleaning liquid from the floor surface (108), the dirt-receiving device comprising a suction unit (126), a suction strip (122), and a hose device (128), wherein negative pressure can be applied to the container interior (132) by means of the suction unit (126), and the container interior is fluidically connected directly or indirectly to the suction strip (122) via the hose device (128). The aim of the invention is to provide such a floor-cleaning device which has improved handling. According to the invention, this is achieved in that a passage opening (148) for the hose device (128) is formed in an inner wall (134) of the dirty liquid container (130); an edge (154) of the passage opening (148) comprises or forms a contact element (158) for the hose device (128); the hose device (128) comprises or forms a support element (176) which bears against the contact element (158) from the container interior (132) side; and the hose device (128) runs through the passage opening (148) and is directly or indirectly connected to a connection element (152) on the suction strip (122).

Description

[0001] 39997. Nuclear power plant. P110PC

[0002] November 28, 2025

[0003] MOBILE FLOOR CLEANING DEVICE

[0004] The present invention relates to a mobile floor cleaning device comprising a chassis for movement on a floor surface, a cleaning device with at least one cleaning tool for cleaning the floor surface, preferably a reservoir for cleaning fluid that can be applied to the floor surface, a dirt fluid container with a container interior, and a dirt collection device for collecting contaminated cleaning fluid from the floor surface, comprising a suction unit, a suction bar, and a hose device, wherein the container interior can be pressurized by means of the suction unit and is in direct or indirect flow communication with the suction bar via the hose device.

[0005] In such a floor cleaning device, the cleaning fluid (for example, water, to which a cleaning chemical may be added) is preferably carried along with the device and applied to the floor surface. Using at least one cleaning tool, dirt is loosened from the floor surface with the additional action of the cleaning fluid. The mixture of dirt and cleaning fluid, the dirty fluid, is sucked into the dirty fluid container. For this purpose, the interior of the container is pressurized. This creates a suction flow through the hose assembly to the suction bar, which picks up the dirty fluid from the floor surface.

[0006] Various designs of the hose assembly exist in the prior art. For example, in US 6,047,437 A, a suction hose is inserted from the outside through a wall into the dirty liquid container. Further floor cleaning devices with a dirt collection device and dirty liquid container are disclosed, for example, in CN 114158989 B, DE 295 14554 U1, and EP 0726057 B1.

[0007] The object of the present invention is to further develop a generic floor cleaning device that has improved handling.

[0008] This problem is solved in a floor cleaning device of the type mentioned above according to the invention by forming a through-opening for the hose assembly in an inner wall of the dirty liquid container.39997. AKW. P110PC

[0009] November 28, 2025

[0010] - 2 -is and an edge of the through-opening includes or forms a fitting element for the hose assembly, that the hose assembly includes or forms a support element which is supported on the fitting element from the side of the interior of the container, and that the hose assembly passes through the through-opening and is directly or indirectly connected to a connecting element on the suction bar.

[0011] In the floor cleaning device according to the invention, the hose assembly can be mounted from inside the container. The hose assembly is guided through the opening and can be supported by the support element on the mounting element at the edge of the opening. The opposite end of the hose assembly can be connected directly or indirectly to the connection element of the suction bar. Assembly and disassembly of the hose assembly are simple and therefore user-friendly.

[0012] By routing the hose assembly directly from the interior of the container through the through-opening, any particle accumulation at a through-opening or suction channel of the dirty liquid container, as in the prior art (especially in the case of manufacture from a plastic material), which results from manufacturing tolerances (e.g., remaining burrs, unwanted undercuts or the like), can be avoided.

[0013] It is advantageous if the hose assembly includes a connector and a flexible hose, for example made of PVC, with the connector integrating the support element and being fluidically connected to the hose. The hose is connected to the connector on the side facing away from the interior of the container and is directly or indirectly connected to the suction bar. This allows for optimization of the hose's functions: the connector rests against the edge of the through-opening and / or engages with it, and the hose reliably guides the suction airflow carrying the dirty liquid.

[0014] The connector is attached to the hose, for example, by force-fit, form-fit and / or material-fit.

[0015] The connector is preferably permanently attached to the hose assembly. This connection is preferably made at the factory before the hose assembly is installed. 39997. AKW. P110PC

[0016] November 28, 2025

[0017] - 3 - For example, the hose is connected to the connector by gluing.

[0018] In a preferred embodiment of the invention, the hose can, for example, be overmolded in an injection mold to form the connector. Accordingly, the connector can be molded onto the hose.

[0019] The hose is preferably inserted into the connector on the side facing away from the interior of the container. In this case, this could mean, for example, that the connector is slipped over the hose.

[0020] It is understood that the hose and the connector should preferably engage with each other in a form-fitting manner.

[0021] The connecting piece is preferably made of a crushable and / or elastically deformable material. When the connecting piece engages in the through-opening, a seal can preferably be achieved between the connecting piece and the through-opening. For this purpose, at least one sealing element is arranged on the connecting piece and is preferably integrally formed, for example, the outer ring mentioned below.

[0022] Alternatively, the connecting piece may be made of a rigid material. In this case, a separate and preferably elastic sealing element may be provided to ensure a seal at the through-opening, for example a lamellar seal and / or the outer ring mentioned below.

[0023] The support element extends along the edge of the through-opening in its circumferential direction, preferably over at least one continuous edge line, so that the hose assembly, in particular the connector, can reliably rest against the support element. Advantageously, the support element is formed by an annular shoulder at the edge.

[0024] The support element is advantageously a shoulder of the hose assembly, and in particular of the connector, which extends circumferentially around the through-opening over a continuous edge. In this way, the hose assembly can be reliably supported at the edge. 39997. AKW. P110PC

[0025] November 28, 2025

[0026] - 4 -

[0027] Advantageously, the step is a ring-shaped step. Alternatively, a step with one or more interruptions in the circumferential direction can be provided.

[0028] The hose assembly, in particular the connector, is preferably inserted into the through-opening in a form-fitting manner.

[0029] It is advantageous if the hose assembly is held in the through-opening or at its edge, particularly by means of a press fit. This ensures that the hose assembly is reliably attached to the wastewater container and preferably seals against the through-opening.

[0030] For example, the hose assembly, in particular the connector, can overlap an edge of the through-opening. For example, the connector rests against the edge of the through-opening along its outer circumference.

[0031] It is advantageous if the press fit can be released manually and / or without tools by a user and the hose assembly can be pulled out of the through-opening. This allows for easy disassembly, for example for maintenance and / or cleaning purposes. In particular, a maintenance hatch for removing and / or inserting the hose assembly can be eliminated.

[0032] The hose assembly, in particular the connector, may preferably comprise at least one outer ring which preferably seals against an inner circumferential surface of the through-opening. The outer ring is formed, for example, by a lamella, a lip, or a rib on the outer circumference of the hose assembly. Preferably, a plurality of outer rings are provided.

[0033] The outer ring can be formed integrally with the connector. Alternatively, separate manufacturing is conceivable. For example, with a rigid connector, an elastic outer ring is provided as a sealing element.

[0034] The hose assembly preferably comprises a head section projecting from the support element into the interior of the container, which is free from contact with the inner wall. This decouples the head section from the inner wall in terms of vibration. This is advantageous for quiet operation of the floor cleaning device. 39997. AKW. P110PC

[0035] November 28, 2025

[0036] - 5 -

[0037] The support element and / or the mounting element are preferably planar. For example, one plane of the support element and the mounting element is oriented perpendicular to an axis of the passage opening.

[0038] The hose assembly, in particular the hose line, is preferably detachably connected to the connection element of the suction bar. For example, the hose line is detached from the connection element and can then be removed from the side of the container interior.

[0039] The wastewater container preferably comprises or forms a hollow body in which a channel is formed. This channel opens into the interior of the container via a through-opening and includes an outlet opening on the opposite side from the through-opening. The hose assembly runs through the channel and exits at the outlet opening. The channel, for example, serves as a guide for the hose assembly, specifically its hose line. The hose line is protected from external access within the channel.

[0040] The wastewater container can be manufactured, for example, using a rotational sintering process to shape the channel.

[0041] Advantageously, the channel is aligned with the outlet opening on the connection element, allowing the hose to run towards the suction bar with as few bends as possible. This is beneficial for the flow characteristics within the hose assembly.

[0042] It may be stipulated that, for example, at least 30%, at least 40%, at least 50% or 60% or more of the hose system runs through the channel.

[0043] The hose assembly can be conveniently pulled out of the channel by the user through the opening and can therefore be removed in a user-friendly manner.

[0044] The floor cleaning device preferably includes a collection container for coarse dirt with perforations inside the container, which is connected to the hose system via the flow path. Dirty liquid that is sucked in via the hose system. 39997. AKW. P110PC

[0045] November 28, 2025

[0046] - 6 - is collected in the collection container, where coarse dirt is retained, while liquid can flow out through the openings.

[0047] The collection container is advantageously engaged with the hose assembly, particularly the connector. For example, the collection container engages with an opening in the hose assembly via a connector element, or vice versa. The collection container preferably engages with the hose assembly in a form-fitting manner.

[0048] The hose assembly, in particular the connector, and the collection container preferably comprise abutting system elements. The collection container preferably rests on the hose assembly.

[0049] The respective system elements are preferably aligned planarly and define, for example, a plane perpendicular to an axis of the passage openings.

[0050] For example, the collection container can be easily mounted by hanging it in a retaining projection on the inner wall.

[0051] It is understood that the collection container is preferably detachably connected to the hose assembly and / or detachably to the inner wall. To remove the hose assembly, the collection container must first be detached, preferably manually and / or without tools. The hose assembly can then be removed, for example, as described above. Alternatively, it is conceivable that the collection container and the hose assembly can be removed while connected.

[0052] The following description of a preferred embodiment of the invention, in conjunction with the drawing, serves to explain the invention in more detail. The drawing shows:

[0053] Figure 1: a side view of the floor cleaning device according to the invention in a preferred embodiment;

[0054] Figure 2: a perspective view of the floor cleaning device with an open dirt liquid container;

[0055] Figure 3: a sectional view along line 3-3 in Figure 1; 39997. Nuclear power plant. P110PC

[0056] November 28, 2025

[0057] - 7 -

[0058] Figure 4: an enlarged view of detail A in Figure 3;

[0059] Figure 4a: a representation similar to Figure 4 in a variant of the floor cleaning device;

[0060] Figure 5: a sectional view along line 5-5 in Figure 4 in an exploded view;

[0061] and

[0062] Figure 6: a side view of a hose assembly, a collection container and a suction bar of the floor cleaning device from Figure 1.

[0063] The drawing shows a floor cleaning device according to the invention, designated by reference numeral 100, in a preferred embodiment. The floor cleaning device 100 is configured here as a scrubber-dryer 102. The scrubber-dryer 102 can be user-operated. A user, not shown in the drawing, can control the floor cleaning device 100 via a control unit 104. The floor cleaning device 100 is a ride-on device with a seat 106 for the user.

[0064] Alternatively or additionally, the floor cleaning device 100 can be designed to be self-steering and self-driving in order to carry out autonomous cleaning.

[0065] The floor cleaning device 100 is used to clean a floor surface 108. The floor cleaning device 100 can be moved on the floor surface 108 via a chassis 110 with a drive.

[0066] The floor cleaning device 100 includes a reservoir 112 for a cleaning fluid, in particular water. The cleaning fluid can be applied to the floor surface 108 to wet it and loosen dirt.

[0067] For cleaning away dirt, the floor cleaning device 100 includes a cleaning unit 114 with at least one cleaning tool 116. In this case, disc brushes 118 are provided as cleaning tools 116. Alternatively, for example, at least one roller brush can be used.

[0068] With respect to a straight-ahead direction 120, a suction bar 122 is arranged behind the cleaning device 114. The suction bar 122 is part of a 39997. AKW. P110PC

[0069] November 28, 2025

[0070] - 8 - Dirt collection device 124, which further comprises a suction unit 126 and a hose assembly 128. The design of the hose assembly 128 is described in detail below.

[0071] The mixture of dirt and cleaning fluid, the dirty fluid, can be collected from the floor surface 108 by means of the dirt collection device 124. A vacuum is applied to the interior of the dirty fluid container 130 via the suction unit 126. The interior of the container 132 is connected to the suction bar 122 via the hose assembly 128. During cleaning operation, the suction bar 122 is lowered onto the floor surface 108. This creates a suction flow from the suction bar 122 through the hose assembly 128 into the interior of the container 132.

[0072] The dirty liquid container 130 comprises a wall with an inner wall 134, which limits the interior of the container 132.

[0073] The dirty liquid container 130 further comprises a lid 136. The lid 136 can assume an open position in which a container opening 138 is exposed (Figures 2 and 5). The lid 136 can assume a closed position in which the container opening 138 is closed (Figures 1, 3 and 4).

[0074] In the open position, a user can access the interior of container 132.

[0075] The wastewater container 130 forms a hollow body 140. A channel 142 is formed within the hollow body 140. The channel 142 extends from a bottom surface 144 of the wastewater container 130 to its top surface 146 and opens into the interior of the container 132 via a through-opening 148 (Figure 3). On the side opposite the through-opening 148 in the direction of the channel 142's path, the channel 142 includes an outlet opening 150. In the direction of the outlet opening 150, the channel 142 is aligned with a connection element 152 of the suction bar 122. The connection element 152 is, in this case, a connection nozzle.

[0076] As can be seen particularly from Figures 4 and 5, the through-opening 148 comprises a rim 154 and an inner circumferential surface 156. The rim 154 surrounds the free cross-section of the through-opening 148. Along a continuous rim line in the circumferential direction of the through-opening 148, the rim 154 forms a mounting element 158.39997. AKW. P110PC

[0077] November 28, 2025

[0078] - 9 - The installation element 158 ​​is ring-shaped, so that a ring shoulder 160 is formed at the edge 154.

[0079] The hose assembly 128 is designed in two parts in the present example. It comprises a connector 162 and a hose 164. The connector 162 is made of an elastically deformable, crushable material. The hose 164 is, for example, made of PVC and is flexible.

[0080] The hose 164 is connected to the fitting 162. It engages the fitting 162 from a side facing away from the interior of the container 132, forming a positive connection. The connection is permanent. The hose assembly 128 can therefore be considered quasi-integral.

[0081] The hose 164 can be connected to the connector 162, for example by gluing.

[0082] Figure 4a shows a variant of the preferred embodiment of the floor cleaning device 100 according to the invention, corresponding to Figure 4. Here, the connecting piece 162 is formed by injection molding onto the hose 164. For this purpose, the hose 164 is overmolded in an injection mold during manufacturing.

[0083] This eliminates, for example, the need for a reduction in cross-section at the transition from the hose 164 to the connector 162 (center of Figure 4a). This is advantageous because it prevents the adhesion of dirt particles that are carried along by the suction flow.

[0084] It is advantageous if the hose assembly 128 is free from any reduction in cross-section in the direction of the suction flow from the connection element 152 to the connection piece 162 and preferably over its entire length.

[0085] The connecting piece 162 comprises a head section 166 and an engagement section 168. The head section 166 is wider relative to the engagement section 168, with a larger diameter. 39997. Nuclear power plant. P110PC

[0086] November 28, 2025

[0087] - 10- The engagement section 168 engages positively in the free cross-section of the through-opening 148. At least one outer ring 170 is arranged on the engagement section 168, which projects relative to an outer circumferential surface 172. The outer ring 170 is, for example, a lip, a lamella, or a strip. In this case, three outer rings 170 are provided.

[0088] The through-opening 148 can be sealed via the engagement section 168. Furthermore, the connecting piece 162, and thus the hose assembly 128, is reliably fixed in the through-opening 148 by means of a press fit.

[0089] The head section 166 comprises a shoulder 174 facing the edge 154, which extends circumferentially around the through-opening 148 over a continuous edge line. In this case, the shoulder 174 is annular. The shoulder 174 forms a support element 176, over which the connecting piece 162, and thus the hose assembly 128, can be supported against the edge 154.

[0090] The system element 158 ​​and the support element 176 are each designed planarly and define a plane that is oriented perpendicular to an axis 178 of the passage opening 148.

[0091] The head section 166 is free from contact with the inner wall 134 (except for the support element 176). This means that the head section 166 is vibration-isolated, which is advantageous for low noise emission.

[0092] To install the hose assembly 128, a user can insert the hose line 164 through the through-opening 148 into the channel 142. The hose assembly 128 is then pushed in until the support element 176 rests against the mounting element 158. Shortly before this point, the engagement section 168 must be pressed into the through-opening 148.

[0093] The hose 162 is guided and received in the channel 142 for approximately half its length (Figure 3). The lower section of the hose 162 runs with minimal deflections towards the connection element 152. The lower end of the hose 162 can be connected to the connection element 152 manually and without tools. 39997. AKW. P110PC

[0094] November 28, 2025

[0095] - 11 - Disassembly can be carried out in reverse order. First, the hose assembly 164 is detached from the connection element 152. The user can manually and without tools release the connection piece 162 with the through-opening 148 and remove the hose assembly 164 upwards.

[0096] As can be seen particularly from Figures 4 to 6, the floor cleaning device 100 includes a collection container 180 for coarse dirt. The collection container 180 is designed in the form of a basket with openings 182. In the present example, the openings 182 are slot-shaped.

[0097] The collection container 180 includes a retaining section 184. The retaining section 184 is dimensioned such that it engages positively in an opening 186 of the connecting piece 162. In particular, a tight flow connection exists.

[0098] The connecting piece 162 and the retaining section 184 comprise corresponding system elements 188 and 190, respectively. In this case, the system elements 188 and 190 are planar and define a plane perpendicular to the axis 178. This allows the collection container 180 to be supported on the top side of the connecting piece 162.

[0099] Furthermore, a retaining projection 192 is formed on the inner wall 134. The collection container 180 overlaps the retaining projection 192 and is thereby suspended in it.

[0100] The suctioned dirty liquid flows from the suction bar 122 through the hose assembly 128 and enters the collection container 180. Coarse dirt is retained therein, and liquid can pass through the openings 182 and be collected in the dirty liquid container 130.

[0101] The collection container 180 is connected manually and without tools to the hose assembly 128 and the inner wall 134. During assembly, after inserting the hose assembly 128, the collection container 180 is inserted into the opening 186 using the retaining section 184 and hooked onto the retaining projection 192. Disassembly can be carried out in reverse order. The collection container 180 is removed before the hose assembly 128 is removed. Alternatively, it is conceivable that the collection container 180 and the hose assembly 128 can be removed together while connected. 39997. AKW. P110PC

[0102] November 28, 2025

[0103] - 12 - List of reference symbols

[0104] 100 floor cleaning device

[0105] 102 scrubber-dryer

[0106] 104 Control unit

[0107] 106 seats

[0108] 108 floor area

[0109] 110 chassis

[0110] 112 storage containers

[0111] 114 Cleaning equipment

[0112] 116 Cleaning tool

[0113] 118 plate brush

[0114] 120 direction of travel

[0115] 122 Suction strip

[0116] 124 Dirt collection device

[0117] 126 Suction unit

[0118] 128 Hose assembly

[0119] 130 dirty water containers

[0120] 132 Container interior

[0121] 134 Inner wall

[0122] 136 lids

[0123] 138 Container opening

[0124] 140 hollow bodies

[0125] Channel 142

[0126] 144 Underside

[0127] 146 Top

[0128] 148 Passage opening

[0129] 150 Exit opening

[0130] 152 Connection element

[0131] 154 Rand

[0132] 156 Inner circumference area

[0133] 158 Plant element

[0134] 160 Ring shoulder

[0135] 162 Connector

[0136] 164 Hose line

[0137] 166 Head section 39997. Nuclear power plant. P110PC

[0138] November 28, 2025

[0139] - 13 - 168 Intervention section

[0140] 170 outer ring

[0141] 172 external perimeter area

[0142] Paragraph 174

[0143] 176 Support element

[0144] 178 axle

[0145] 180 collection containers

[0146] 182 Passage opening

[0147] 184 Stop section

[0148] 186 Opening

[0149] 188 Plant element

[0150] 190 plant element

[0151] 192 Holding lead

Claims

39997. Nuclear power plant. P110PC November 28, 2025 - 14- PATENT CLAIMS 1. Mobile floor cleaning machine, comprehensive a chassis (110) for movement on a ground surface (108), a cleaning device (114) with at least one cleaning tool (116) for cleaning the floor surface (108), preferably a reservoir (112) for cleaning fluid that can be applied to the floor surface (108), a dirt liquid container (130) with a container interior (132), and a dirt collection device (124) for collecting contaminated cleaning liquid from the floor surface (108), which includes a suction unit (126), a suction bar (122) and a hose device (128), wherein the container interior (132) can be pressurized by means of the suction unit (126) and is in direct or indirect flow communication with the suction bar (122) via the hose device (128), characterized by the fact that in an inner wall (134) of the wastewater container (130) a passage opening (148) for the hose assembly (128) is formed and an edge (154) of the passage opening (148) comprises or forms a fitting element (158) for the hose assembly (128), that the hose assembly (128) includes or forms a support element (176) which is supported on the system element (158) from the side of the interior of the container (132). and that the hose assembly (128) passes through the through-opening (148) and is connected directly or indirectly to a connecting element (152) on the suction bar (122).

2. Mobile floor cleaning device according to claim 1, characterized by the fact that The hose assembly (128) comprises a connector (162) and a flexible hose line (164), wherein the connector (162) includes the support element (176) and is fluid-connected to the hose line (164), and wherein the hose line (164) is connected to the connector (164) on the side facing away from the interior of the container (132) and is directly or indirectly connected to the suction bar (122). 39997. AKW. P110PC November 28, 2025 - 15- 3. Mobile floor cleaning device according to claim 2, characterized by the fact that the connector (162) is permanently connected to the hose line (164).

4. Mobile floor cleaning device according to claim 2 or 3, characterized by the fact that the hose (164) is inserted into the connector (162).

5. Mobile floor cleaning device according to one of claims 2 to 4, characterized by the fact that the connecting piece (162) is made of a crushable and / or elastically deformable material or that the connecting piece (162) is made of a rigid material.

6. Mobile floor cleaning device according to one of the preceding claims, characterized in that the installation element (158) extends along the edge (154) of the passage opening (148) in its circumferential direction over at least one continuous edge line, in particular that the installation element (158) is formed by an annular shoulder (160) at the edge (154).

7. Mobile floor cleaning device according to one of the preceding claims, characterized in that the support element (176) is a shoulder (174) of the hose assembly (128) and in particular on the connecting piece (162), which extends in the circumferential direction of the through-opening (148) over a continuous edge line, wherein the shoulder (174) is in particular an annular shoulder (174).

8. Mobile floor cleaning device according to one of the preceding claims, characterized in that at least one of the following applies: The hose assembly (128), in particular the connector (162), is preferably positively fitted into the through-opening (148); 39997. AKW. P110PC November 28, 2025 - 16- the hose assembly (128), in particular the connector (162), is held in the through-opening (148) or at the edge (154) of the through-opening (148) by means of a press fit; The hose assembly (128), in particular the connector (162), overlaps the edge (154) of the through-opening (148).

9. Mobile floor cleaning device according to claim 8, characterized by the fact that the press fit can be released manually and / or without tools by a user and the hose assembly (128) can be pulled out of the through-opening (148).

10. Mobile floor cleaning device according to claim 8 or 9, characterized by the fact that the hose assembly (148), in particular the connecting piece (162), comprises at least one outer ring (170) which preferably seals against an inner circumferential surface (156) of the through-opening (148), wherein preferably a plurality of outer rings (170) are provided.

11. Mobile floor cleaning device according to one of the preceding claims, characterized in that the hose line (164) includes a head section (166) projecting from the support element (176) into the interior of the container (132), which is free from contact with the inner wall (134).

12. Mobile floor cleaning device according to one of the preceding claims, characterized in that The plant element (158) and / or the support element (176) are designed planarly.

13. Mobile floor cleaning device according to one of the preceding claims, characterized in that the hose assembly (128), in particular the hose line (164), is detachably connected to the connection element (152) of the suction bar (122).

14. Mobile floor cleaning device according to one of the preceding claims, characterized in that 39997. AKW. P110PC November 28, 2025 - 17- the wastewater container (130) comprises or forms a hollow body (140) in which a channel (142) is formed which opens into the interior of the container (132) via the through-opening (148) and which includes an outlet opening (150) on one side opposite the through-opening (148) in the direction of travel, wherein the hose assembly (128) passes through the channel (142) and exits the channel (142) at the outlet opening (150).

15. Mobile floor cleaning device according to claim 14, characterized by the fact that the channel (142) is aligned in the direction of travel towards the outlet opening (150) on the connecting element (152).

16. Mobile floor cleaning device according to claim 14 or 15, characterized by the fact that the hose assembly (128) can be pulled out of the channel (142) by a user through the through-opening (148).

17. Mobile floor cleaning device according to one of the preceding claims, characterized in that The floor cleaning device (100) includes in the interior of the container (132) a collection container for coarse dirt with passage openings (182) which is connected to the hose device (128) by flow.

18. Mobile floor cleaning device according to claim 17, characterized by the fact that at least one of the following applies: The collection container (180) engages with the hose line (164), in particular the connecting piece (162), wherein preferably the collection container (180) engages in an opening of the hose device (128) via a connecting element (152) or vice versa; The hose line (164), in particular the connecting piece (162), and the collection container (180) comprise adjacent system elements (188, 190), wherein preferably the collection container (180) rests on the hose assembly (128).

19. Mobile floor cleaning device according to claim 17 or 18, 39997. AKW. P110PC November 28, 2025 - 18- characterized by the fact that the collection container (180) is suspended in a retaining projection (192) of the inner wall (134).

20. Mobile floor cleaning device according to one of claims 17 to 19, characterized in that the collection container (180) is detachably connected to the hose assembly (128) and / or detachably to the inner wall (134).

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