Surface cleaning device comprising a cassette holder, and method for operating a surface cleaning device

Abstract

The invention relates to a surface cleaning device, comprising a cleaning head (12) having a cleaning head body (14), at least one cleaning roller (32) which can be rotated about a rotational axis (96), a drive motor (200) for the at least one cleaning roller (32), and at least one cassette (92) with a holding device (94) for the at least one cleaning roller (32), wherein the at least one cleaning roller (32) is rotatably mounted on the holding device (94), and the at least one cassette (92) is removably fitted on the cleaning head (12). The surface cleaning device is characterized in that a cassette holder (98), on which the at least one cassette (92) is removably held, is movably mounted on the cleaning head body (14).

Description

[0001] Surface cleaning device with cassette holder and method for operating a surface cleaning device

[0002] The invention relates to a surface cleaning device, comprising a cleaning head with a cleaning head body, at least one cleaning roller rotatable about a rotation axis, a drive motor for the at least one cleaning roller, and at least one cassette with a holding device for the at least one cleaning roller, wherein the at least one cleaning roller is rotatably mounted on the holding device and the at least one cassette is removably mounted on the cleaning head.

[0003] The invention further relates to a method for operating a surface cleaning device.

[0004] DE 20 2021 106 339 Ul discloses an attachment for a household cleaning appliance for cleaning carpets, in particular for a vacuum cleaner or a robot vacuum cleaner with a spring-mounted brush arrangement.

[0005] EP 2 891 442 A2 discloses a robot cleaner having a main body on which a dust container is mounted, and a suction unit provided at a front part of the main body. The suction unit is movable relative to the main body.

[0006] WO 2023 / 152082 A1 discloses a floor cleaning device with a cassette in a holding device for a cleaning roller, wherein the cassette is removably mounted on a floor head.

[0007] CN 216907837 U discloses a cleaning mechanism with a roller assembly and a drive connected from one end of the roller assembly to an interior of the roller assembly. A drive connector is arranged at an inner end of the drive. A gear connector is positioned in the roller assembly, and the gear connector and the drive connector are detachably inserted.

[0008] Cleaning robots are described in WO 2022 / 117107 A1, the

[0009] US 2021 / 0228050 Al, EP 3 900 602 Al, DE 10 2017 126 414 Al, WO 2020 / 103835 Al, EP 4 088 638 Al, EP 3 925 504 Al.

[0010] CN 113679291 A discloses a cleaning device with an automatic lifting mechanism.

[0011] CN 112741538 A discloses a suction device.

[0012] The invention is based on the object of providing a surface cleaning device of the type mentioned above with which improved cleaning results can be achieved.

[0013] This object is achieved according to the invention in the surface cleaning device mentioned at the outset in that a cassette holder is movably arranged on the cleaning head body, on which the at least one cassette is removably held.

[0014] By providing a cassette with a holding device which holds the at least one cleaning roller, the at least one cleaning roller can be easily inserted into or removed from the surface cleaning device.

[0015] According to the invention, a cassette holder for the cassette is movably arranged. The mobility of the cassette holder also allows the at least one cleaning roller to move via the cassette. The mobility of the at least one cleaning roller relative to the cleaning head results in improved cleaning options. For example, it is possible to press the at least one cleaning roller against a surface to be cleaned with additional force.

[0016] Furthermore, a type of floating mounting of the at least one cleaning roller can be achieved in a simple manner in order, for example, to be able to avoid an obstacle on a surface to be cleaned by moving the at least one cleaning roller away (via the cassette holder).

[0017] The cassette holder's mobility also allows for optimal adaptation to the floor surface to be cleaned. For example, the at least one cleaning roller can be easily lifted off the surface to be cleaned if cleaning with at least one cleaning roller is not desired or not practical. For example, a cleaning roller for a hard floor can be lifted off when a textile floor needs to be cleaned.

[0018] The mobility of at least one cleaning roller over the cassette holder also allows for optimized coupling to a ground station, for example.

[0019] It can be provided that the cassette holder is mounted on the cleaning head body in a linearly movable manner.

[0020] It is particularly advantageous if the cassette holder is mounted on the cleaning head body on a pivot bearing device that can pivot about a pivot axis. This results in a structurally simple design with regard to the mounting and mobility of the cassette holder with the at least one cassette and the at least one cleaning roller.

[0021] In particular, it is advantageous if at least one of the following is provided: the pivot axis of the pivot bearing device is parallel to a mounting plane of the cleaning head for a surface to be cleaned; the pivot axis is parallel to the rotation axis of the at least one cleaning roller; the pivot axis is transverse and in particular perpendicular to a forward travel direction of the cleaning head; the pivot axis is parallel to an insertion direction of the at least one cassette on the cleaning head and / or to a removal direction of the at least one cassette from the cleaning head.

[0022] This allows for optimization of the cleaning results through structural design.

[0023] In particular, it is provided that, relative to a longitudinal axis of the cleaning head, the at least one cleaning roller is positioned between the pivot bearing device and a tank device for dirty fluid on the cleaning head. This results in optimized space utilization. The storage volume for the tank device for dirty fluid is not restricted by the provision of the pivot bearing device.

[0024] It is advantageous if a guide device is provided for guiding the at least one cassette in a removal direction and an insertion direction and for holding the at least one cassette on the cassette holder in a direction transverse to a removal direction and an insertion direction, wherein the guide device has a first part which is arranged in the cassette holder, and a second part which cooperates with the first part and is arranged on the at least one cassette. This allows the cassette to be easily inserted and removed from the cassette holder. A defined guide is provided so that, in particular, targeted guidance for fixing relative to an axial axis parallel to the insertion direction is also possible. The guide device further ensures that the at least one cassette is held on the cassette holder and thus on the cleaning head transversely to the insertion direction or removal direction.

[0025] In a structurally advantageous embodiment, the first part of the guide device is arranged and formed on a wall of the cassette holder, and a part of the pivot bearing device is located on the wall.

[0026] This results in a compact design for the cassette holder. It can be designed and installed in a space-saving manner on the cleaning head.

[0027] Furthermore, it is advantageous if at least one web is arranged on a wall of the cassette holder, which protrudes transversely from the wall, and if a first part of a pivot bearing device is located on the at least one web. This makes it easy to achieve a pivotable mounting of the cassette holder on the cleaning head. In particular, this makes it possible to arrange the pivot bearing device outside a receptacle for the cleaning roller (which may be loaded with dirt).

[0028] In particular, a second part of the pivot bearing device, which cooperates with the first part, is then arranged on the cleaning head body. The first part and the second part together form the pivot bearing device. This allows the cassette holder to be pivotally mounted on the cleaning head body.

[0029] It is further advantageous if the cassette holder is movably positioned in a receptacle of the cleaning head for the at least one cleaning roller, the receptacle has a receptacle wall, and the at least one web extends through an opening in the receptacle wall. The receptacle of the cleaning head is generally exposed to dirt. By arranging the pivot bearing device outside the receptacle, exposure to dirt on the pivot bearing device can be minimized. The at least one opening in the receptacle wall allows a pivot bearing to be arranged outside the receptacle, with the cassette holder being pivotable in the receptacle.

[0030] In one embodiment, a fixing device is provided for releasably fixing the at least one cassette to the cassette holder in a removal direction and in an insertion direction. The fixing device comprises a first part, which is seated on the cassette holder, and a second part, which cooperates with the first part and is seated on the at least one cassette. This fixing device allows the cassette to be fixed axially (parallel to the insertion direction or removal direction) to the cleaning head via the cassette holder.

[0031] The fixing device has, in particular, a push-to-release mechanism and is preferably designed as a snap-action device, and the second part has at least one tab. This allows the fixing to be achieved and released in a simple manner. If the second part has at least one tab, the removable cassette can be designed in a simple manner. The remainder of the snap-action device is then, in particular, non-removably positioned on the cleaning head.

[0032] It is also advantageous if the cassette holder is assigned a spring device which is arranged and designed such that a spring force of the spring device strives to press the cassette holder with the at least one cleaning roller in the direction of a surface to be cleaned. This makes it easy to achieve a type of floating bearing. Alternatively or additionally, the at least one cleaning roller can be pressed against a surface to be cleaned via the cassette holder. This makes it possible to achieve a contact force for the at least one cleaning roller which exceeds the weight of the cleaning head. This can improve the cleaning result. Furthermore, the spring loading of the cassette holder also makes it easy to provide a restoring force for the cassette holder.If, for example, it has been lifted and needs to be returned to a cleaning position, the spring force of the spring device ensures the corresponding return.

[0033] In a structurally simple embodiment, which is also space-saving, the spring device is arranged on a pivot bearing device.

[0034] In one embodiment, the spring device is designed such that the at least one cleaning roller presses against a surface to be cleaned with a force in the range between 7 N and 20 N. This results in an improved cleaning effect. The force is designed such that the cleaning head does not lift off and the cleaning head remains in contact with the surface to be cleaned.

[0035] It is advantageous to provide a lifting device that allows the cassette holder to be raised so that there is no longer any contact between the at least one cleaning roller and the surface to be cleaned. This allows the at least one cleaning roller to be deactivated for cleaning operations. This can be done, for example, when wet cleaning via the at least one cleaning roller is not desired, such as with a textile surface.

[0036] In a structurally advantageous embodiment, a cable pull device is provided for lifting the movable cassette holder away from a mounting plane of the cleaning head for a surface to be cleaned, particularly by overcoming the spring force of a spring device that tends to push the cassette holder toward the surface. The cable pull device can be designed to save space. A motor or gear of the cable pull device can be positioned relatively far away from the cassette holder. This results in optimized use of space on the cleaning head.

[0037] In one embodiment, the cable pull device has a motor and preferably a gearbox, in particular with at least one of the following: the motor and / or the gearbox is positioned at a front region of the cleaning head, which is remote from a rear region on which the at least one cleaning roller is positioned; the motor and / or the gearbox is positioned on the same side of the cleaning head body as a blower device and / or a drive device for a brush roller; the motor and / or the gearbox is positioned in the region of a battery device on the cleaning head body.

[0038] This results in a space-optimized arrangement of the engine and / or transmission.

[0039] In particular, the cable pull device comprises a pull cable that is attached to the cassette holder via at least one fastening element. This allows the cassette holder to be easily lifted.

[0040] Furthermore, it is advantageous if at least one of the following is provided: exactly one fastening element is provided; the at least one fastening element is located in a central

[0041] Area of ​​the cassette holder with respect to opposite front ends of the cassette holder; the at least one fastening element is located on an upper area of ​​the cassette holder, which faces away from a mounting plane of the cleaning head for a surface to be cleaned.

[0042] This makes it easy to implement a lifting function for the cassette holder. The cable pull device can be positioned on the cleaning head to save space.

[0043] Optimized use of space is achieved when a pull rope of the cable pulling device is guided laterally past a holder for a dirt collection container.

[0044] In one embodiment, the cable pulley device comprises a pulley element. This reduces the force required by a motor to lift the cassette holder.

[0045] In particular, the pulley element is arranged between a receptacle for a dirt collection container and the at least one cassette holder. This results in optimized space utilization.

[0046] In one embodiment, the pulley element comprises a displacement element that is guided for displacement, in particular for linear displacement. A first traction cable with a loop is guided on the displacement element, and a second traction cable is fixed in a displacement-resistant manner with respect to the displacement element. Driven by a motor, the displacement element can then be displaced via the first traction cable. The displacement element then, in turn, takes the second traction cable with it, and this can cause the cassette holder to be lifted. In one embodiment, the first traction cable is connected to a motor, and the second traction cable is connected to the cassette holder. This results in a space-saving arrangement.

[0047] It is advantageous if a spring device is arranged on the pulley element, which ensures tension in the rope, particularly in the first pull rope. This prevents the pull rope from sagging.

[0048] The drive motor drives the rotation of the at least one cleaning roller around the rotational axis. The drive motor can be arranged outside the receptacle or on or in the receptacle. In one embodiment, the drive motor for the at least one cleaning roller is positioned in a receptacle for the holding device, onto which the at least one cleaning roller is placed during operation of the surface cleaning device. This provides an internal motor for the cleaning roller. This results in a space-saving arrangement.

[0049] It is advantageous if at least one of the following is provided: the at least one cleaning roller has a textile covering and in particular a microfiber covering; the at least one cleaning roller is designed as a wet wiping roller; the at least one cleaning roller is designed as a cleaning roller for a hard floor.

[0050] In this way, a wet cleaning process (mop cleaning process) can be carried out, in particular on a hard floor. It is also possible in principle for the at least one cleaning roller to have a bristle trim, although a combination of textile trim and bristle trim can also be provided. In principle, the surface cleaning device according to the invention can be designed as a (hand-)guided surface cleaning device or as a self-propelled and self-steering surface cleaning device. In one embodiment, the surface cleaning device according to the invention is designed as a vacuum robot or as a mop robot or as a vacuum-mop robot, which has a vacuum function with a brush roller and a mop function with the at least one cleaning roller.

[0051] It is advantageous if at least one of the following is provided: the at least one cleaning roller is assigned a tank device for dirt fluid, which is in particular removably mounted on the cleaning head;

[0052] Dirty fluid is conveyed from the at least one cleaning roller to a tank device either without a fan or via a fan device; a moistening device is provided which applies cleaning fluid to the at least one cleaning roller and / or a surface to be cleaned; a scraper device for scraping dirt fluid from the at least one cleaning roller is assigned to the at least one cleaning roller.

[0053] By providing a tank facility for dirty fluid, a dirty fleet can be accommodated.

[0054] Dirt fluid is injected into the dirt fluid tank either without a fan or via a fan device. A humidification device allows cleaning fluid (fresh water, possibly with a surfactant additive) to be applied directly to the at least one cleaning roller. This allows a wet wiping process to be performed on the at least one cleaning roller.

[0055] A scraper device allows dirty fluid to be scraped off and guided from at least one cleaning roller and then coupled into a tank device for dirty fluid.

[0056] Furthermore, it is advantageous if at least one of the following is provided: at least one rotatable brush roller is mounted on the cleaning head in addition to the at least one cleaning roller, and a blower device for generating a suction flow is assigned to the at least one brush roller; a dirt collection container is assigned to the at least one brush roller, which is removably mounted on the cleaning head and which serves in particular to collect dry dirt.

[0057] If, in addition to the at least one cleaning roller, at least one rotatable brush roller is provided, and a blower device for generating a suction flow is assigned to this, a suction operation of the surface cleaning device can be achieved, for example, for textile surfaces. This also makes it possible, in particular, to set a pure suction operation, particularly for a textile surface, or a combination of suction and wiping operation, via a user setting or automatically via a floor detection function.

[0058] According to the invention, a method for operating a surface cleaning device is provided, which has a cleaning head with a cleaning head body, at least one cleaning roller rotatable about a rotation axis, a drive motor for the at least one cleaning roller and at least one cassette with a holding device for the at least one cleaning roller, in which the at least one cassette is removably positioned on a movable cassette holder and the at least one cleaning roller is pressed against a surface to be cleaned via the movable cassette holder by a spring device.

[0059] The method according to the invention has the advantages already explained in connection with the surface cleaning device according to the invention.

[0060] In particular, the method according to the invention can be carried out on the surface cleaning device according to the invention or the surface cleaning device according to the invention can be operated with the method according to the invention.

[0061] It is advantageous if a cable-operated device lifts the at least one cleaning roller above the cassette holder relative to the installation plane of the cleaning head for a surface to be cleaned. This allows the at least one cleaning roller to be deactivated by lifting it, for example, during floor detection.

[0062] The following description of preferred embodiments, taken in conjunction with the drawings, serves to further explain the invention. They show:

[0063] Figure 1 is a perspective view of an embodiment of a surface cleaning device according to the invention in the form of a self-propelled and self-steering floor cleaning machine (cleaning robot);

[0064] Figure 2 shows a bottom view of the surface cleaning device according to Figure 1 in the direction A according to Figure 1; Figure 3 shows a further perspective view of the surface cleaning device according to Figure 1 with the housing parts removed;

[0065] Figure 4 shows a partial view of the surface cleaning device according to

[0066] Figure 1 in area B according to Figure 1, wherein a receptacle for a cleaning roller is closed;

[0067] Figure 5 is the same view as Figure 4, with a cover on the receptacle open;

[0068] Figure 6 is the same view as Figure 5, with a cassette with a cleaning roller half removed and half inserted;

[0069] Figure 7 shows an embodiment of a cassette with a cleaning roller held thereon, wherein the cleaning roller is held clamped to the cassette by a closed cover;

[0070] Figure 8 shows a further view of the cassette with cleaning roller according to Figure 7;

[0071] Figure 9 shows the cassette according to Figure 7, with the flap open;

[0072] Figure 10 is a side view of the cassette with cleaning roller according to Figure 7 in the direction C according to Figure 7 (with the flap closed);

[0073] Figure 11 is a view similar to Figure 10, but with the flap open (corresponding to the plan view in direction D according to Figure 9); Figure 12 is a schematic sectional view of the cassette with

[0074] Cleaning roller with closed flap (corresponding to the view in Figure 10);

[0075] Figure 13 is a schematic sectional view of the cassette with

[0076] Cleaning roller with the flap open (according to Figure 11);

[0077] Figure 14 is a similar view of the cassette as in Figure 8 with the cleaning roller removed;

[0078] Figure 15 is a further view of the cassette according to Figure 14 without the cleaning roller;

[0079] Figure 16 is a sectional view of the surface cleaning device in the

[0080] Level E according to Figure 4 or 5;

[0081] Figure 17 shows a detailed view of a sectional view of a

[0082] Cassette with retained cleaning roller;

[0083] Figure 18 is a partial sectional view of the surface cleaning device in plane F according to Figure 5;

[0084] Figure 19 is a partial sectional view of another embodiment of a surface cleaning device;

[0085] Figure 20 is a perspective view of a cassette holder with a cassette held thereon, the cassette in turn holding a cleaning roller;

[0086] Figure 21 shows another view of the cassette holder (without

[0087] cassette and cleaning roller); Figure 22 shows a further view of the cassette holder according to Figure 20 (without cassette and cleaning roller);

[0088] Figure 23 is a sectional view of the surface cleaning device in the region of a cleaning roller in a plane parallel to the plane F according to Figure 5, wherein a cleaning roller is placed on a surface to be cleaned;

[0089] Figure 24 shows a further sectional view with the cleaning roller raised relative to a surface to be cleaned;

[0090] Figure 25 is a detailed view of area G according to Figure 3 with a pulley element;

[0091] Figure 26(a) is a detailed view of an embodiment of a surface cleaning device in which a receptacle for the cleaning roller is closed;

[0092] Figure 26(b) is the same view as Figure 26(a) with the cover removed;

[0093] Figure 27 shows a further embodiment of a cassette with a lid arranged thereon;

[0094] Figure 28(a) and (b) detail views of a cover on a receptacle in a further embodiment; and

[0095] Figures 29(a) and (b) show further detailed views of another embodiment of a surface cleaning device in the region of a receptacle. One embodiment of a surface cleaning device is a floor cleaning device in the form of a self-propelled and self-steering floor cleaning device (Figures 1 to 9). In particular, the surface cleaning device is a vacuum-mopping robot suitable for cleaning textile floors and hard floors.

[0096] The surface cleaning device 10 comprises a cleaning head 12, which comprises a self-propelled and self-steering cleaning head body 14 (driving body).

[0097] A (ground) station may be provided, in particular for charging a battery device and, if necessary, for cleaning the cleaning head 12 (not shown in the drawings).

[0098] In a cleaning operation, the surface cleaning device 10 with the cleaning head 12 is placed on a surface 16 to be cleaned, such as a floor (see, for example, Figure 10).

[0099] A drive 18 is arranged on the cleaning head body 14. This drives wheels 20 (Figure 2). In one embodiment, a first wheel 20a and a second wheel 20b are provided, which share a common wheel axle 22. The wheels 20 are driven by the drive 18 to rotate about the wheel axle 22.

[0100] Furthermore, a support roller 24 is arranged on the cleaning head body 14 at a distance from the wheels 20. The support roller 24 has a rotation axis. It can pivot about a steering axis that is perpendicular to this rotation axis. It is fundamentally possible for the support roller 24 to be a passive steering roller that is not driven (and in particular not driven for rotation about the corresponding rotation axis and in a pivoting movement about the steering axis). A change in direction of the cleaning head 12 occurs by appropriate control of the wheels 20a, 20b by a control device positioned on the cleaning head body 14. A change in direction occurs in particular by rotating the wheels 20a, 20b at different speeds.

[0101] In an alternative embodiment, it is provided that the support roller 24 is an active steering roller for controlling the direction of the cleaning head 14. The control is carried out accordingly by a control device.

[0102] The surface cleaning device 10 has a main direction of travel 26. This main direction of travel 26 is a forward direction of travel. When the cleaning head 12 travels in the main direction of travel 26, the rotation axis of the support roller 24 is aligned parallel to the wheel axle 22.

[0103] The cleaning head 12 is assigned a support plane 28 (see, for example, Figure 10). The support plane 28 is defined by the wheels 20 and the support roller 24. On a flat surface 16, the cleaning head 12 rests on the surface when positioned above the support plane 28 on the surface 16.

[0104] The surface cleaning device 10 comprises (at least) one brush roller 30 for suction operation. It further comprises a further cleaning roller 32, by means of which, in particular, wet-wiping cleaning can be carried out.

[0105] During cleaning operation of the surface cleaning device 10, the brush roller 30 and / or the cleaning roller 32 are located on the installation plane 28 and act on the surface 16 to be cleaned. (It is fundamentally possible for both the brush roller 30 and the cleaning roller 32 to act on the surface 16 to be cleaned during cleaning operation, or for only the brush roller 30 to act on the surface 16 to be cleaned. In a further exemplary embodiment, it can also be provided that only the cleaning roller 32 acts on the surface 16 to be cleaned.) A navigation device 34 is arranged on the cleaning head body 14. The navigation device 34 is a sensor device and comprises at least one sensor element. The navigation device 34 is connected in a signal-effective manner to the control device for controlling the movement of the surface cleaning device 10.The navigation device 34 comprises, for example, one or more optical sensors, one or more wheel sensors, one or more IR sensors and / or one or more ultrasonic sensors.

[0106] The cleaning head body 14 has a front end 36 and a rear end 38 relative to the main direction of travel 26 (forward direction of travel 26). A longitudinal axis 40 is assigned to the cleaning head 12, which runs between the front end 36 and the rear end 38 and is parallel to the main direction of travel 26.

[0107] In the area of ​​the rear end 38, in particular a tank device 42 for dirty fluid and a tank device 44 for cleaning fluid are positioned (see, for example, Figure 24).

[0108] In one embodiment, the tank device 42 and the tank device 44 are combined and can be removed from the cleaning head 12 or inserted thereon as a combination.

[0109] Dirt fluid is defined as a fluid that is essentially flowable. It can be composed of dirt particles or a mixture of dirt particles and a liquid (especially water, possibly with a surfactant cleaning agent added).

[0110] The cleaning head body 14 has a bottom side 46 facing the installation plane 28. It has a top side 48 opposite the bottom side 46. The wheels 20 and the support roller 24 are arranged on the bottom side 46. The navigation device 34 is positioned at least partially on the top side 48.

[0111] A bumper 50 is arranged on the cleaning head body 14 in the region of the front end 36, which can be used to tactilely detect collisions of the surface cleaning device 10 with obstacles. The bumper 50 is or includes one or more tactile sensor elements that are connected to the control device for signal transmission.

[0112] 46 cliff sensors 52 (see Figure 2) are arranged on the underside of the cleaning head body 14 and are connected to the control unit for signaling purposes. These cliff sensors 52 serve to prevent the surface cleaning device 10 from falling, for example, in the area of ​​stairs, by detecting "cliffs" accordingly.

[0113] The cleaning head body 14 includes a rear portion 54. The tank devices 42, 44 and the cleaning roller 32 are positioned at the rear portion 54. The rear end 38 is located at the rear portion 54. The cleaning head body 14 further includes a front portion 56, which is connected to the rear portion 54. The front end 36 is located at the front portion 56.

[0114] A receptacle 58 for a dirt collection container (not shown in Figure 3) is arranged on the front region 56, adjacent to the rear region 54. The dirt collection container in the receptacle 58 serves in particular for collecting dry dirt and is assigned to the brush roller 30.

[0115] A connection 60 is arranged on the receptacle 58, via which the corresponding dirt collection container is connected to a blower device 62. The blower device 62 is positioned at the front area 56. It generates a suction flow. The suction flow acts on a receptacle area 64 (see Figure 2), in which the brush roller 30 is positioned. The brush roller 30 is mounted for rotation about a rotation axis 66. A drive motor 68 is arranged at the front area 56, which drives the rotation of the brush roller 30 about the rotation axis 66 during cleaning operation.

[0116] The blower device applies the suction flow to the receiving area 64 and in particular dry dirt is sucked in and collected in the dirt collecting container (not shown in the drawings) in the receptacle 58.

[0117] The dirt collection container can be removed from the holder 58 for emptying and cleaning.

[0118] In one embodiment, the receptacle 64 is positioned between the receiving area 64 with the brush roller 30 and the tank device 42 or 44 (relative to the longitudinal axis 40) on the cleaning head body 14. The receptacle 58 is positioned between the cleaning roller 32 and the brush roller 30 on the cleaning head body 14.

[0119] Following the receiving area 64 with the brush roller 30 in the longitudinal axis 40, a rechargeable battery device 70 is located on the front area 56 of the cleaning head body 14.

[0120] In the embodiment shown, the receiving area 64 with the brush roller 30 is located with respect to the longitudinal axis 40 between the battery device 70 and the receptacle 58 for the dirt collection container.

[0121] In the area of ​​the front end 36, contact elements 72 (see Figure 2) are arranged on the underside 56 of the cleaning head body 14, which, in cooperation with a station (ground station), enable recharging of the battery device 70. The rotation axis 66 of the brush roller 30 is oriented transversely and, in particular, perpendicularly to the longitudinal axis 40.

[0122] The rotation axis 66 is oriented parallel to the installation plane 28.

[0123] In particular, the receiving area 64 with the brush roller 30 is positioned between the first wheel 20a and the second wheel 20b (see Figure 2).

[0124] At the front end 56 of the cleaning head 12, side brushes 74a, 74b are also located. These brushes extend beyond a periphery of the cleaning head body 14.

[0125] In one embodiment, a first side brush 74a and a second side brush 74b are assigned. Respective drive motors 76 for the side brushes 74a, 74b are located on the front region 56 of the cleaning head body 14. The side brushes 74a, 74b are rotatable about a rotation axis that is transverse and, in particular, perpendicular to the installation plane 28 or at a small, acute angle, in particular less than 10°, to the installation plane 28.

[0126] In one embodiment, the battery device 70 is positioned between the drive motors 76 for the side brushes 74a, 74b, and in particular, the battery device 70 and the drive motors 76 lie on a line (see Figure 3) oriented perpendicular to the longitudinal axis 40. This line 78 is in particular parallel to the rotation axis 66.

[0127] In one embodiment, the blower device 62 is located on one side of the cleaning head body 14, and, for example, the drive motor 68 for the brush roller 30 is located on another side. In particular, between the blower device 62 and the drive motor 68 lies a center plane of the cleaning head body 14, on which the longitudinal axis 40 lies and which is perpendicular to the installation plane 28. In one embodiment, the blower device 62 is located on one side of the receptacle 58, with a fluid-effective connection of the dirt collection container being established by the blower device 62 via the corresponding side of the receptacle 58, and the drive motor 68 is located on an opposite side of the receptacle 58.

[0128] An openable and, in particular, hinged cover 78 (see Figure 1) is arranged on the top side 48 of the cleaning head body 14. This cover is not shown in the partial illustration according to Figure 3. The cover 78 covers the tank devices 42 and 44 on the top side 48. It also covers the receptacle 58 for the dirt collection container. In order to remove the dirt collection container from the receptacle 58, the cover 78 must be opened.

[0129] The cleaning head body 14 has a first lateral side 80 and an opposite second lateral side 82. The first lateral side 80 and the second lateral side 82 are in particular mirror-symmetrical to the center plane on the longitudinal axis 40.

[0130] The first lateral side 80 and the second lateral side 82 may be flat or curved.

[0131] A receptacle 84 for the cleaning roller 32 is arranged on the cleaning head body 14 between the first lateral side 80 and the second lateral side 82. The receptacle 84 is, in particular, a receiving shaft. The receptacle 84 is open toward the underside 46 and thus toward the installation plane 28, so that the cleaning roller 32 positioned in the receptacle 84 can act on the surface 16 to be cleaned.

[0132] The receptacle 84 is on the rear portion 54 of the cleaning head body

[0133] 14. It is spaced from the rear end 38 of the cleaning head body 14. The receptacle 84 is closed on the first lateral side 80 by a transverse wall 86. The transverse wall 86 is, in particular, fixedly arranged on the cleaning head body 14 or is an integral part of the cleaning head body 14.

[0134] On the second lateral side 82, the receptacle 84 is open via an opening 88. A cover 90 is associated with the opening 88, by means of which the opening 88 on the second lateral side 82 can be closed.

[0135] Figure 4 shows a portion of the cleaning head 12 with the cover 90 closed. In Figures 5 and 6, the cover 90 is open for removing or inserting the cleaning roller 32 into the receptacle 84.

[0136] A cassette 92 is provided for positioning the cleaning roller 32 in the receptacle 84 (see Figures 7 to 24). The cassette 92 includes a holding device 94 for the cleaning roller 32. When the cassette 92 is properly positioned in the receptacle 84 of the cleaning head 12, the cleaning roller 32 is rotatably driven about a rotation axis 96 by the holding device 94.

[0137] The rotation axis 96 is parallel to the installation plane 28. It is transverse and, in particular, perpendicular to the main direction of travel 26 (forward direction of travel 26). It is transverse and, in particular, perpendicular to the longitudinal axis 40. It is at least approximately parallel to the rotation axis 66 of the brush roller 30.

[0138] A cassette holder 98 is positioned in the receptacle 84 on the cleaning head body 14 for holding the cassette 92 and thus, in turn, indirectly for holding the cleaning roller 32 in the receptacle 84. The cassette holder 98 (see in particular Figures 16 and 20 to 24) is a non-removable component of the cleaning head 12. It can be fixedly positioned on the cleaning head 12 (on the cleaning head body 14) or, in an embodiment that will be explained in more detail below, can be movable and, in particular, pivotable on the cleaning head body 14.

[0139] A guide device 100 is provided which serves to guide the cassette 92 on the cassette holder 98 and to hold it in position in the receptacle 84.

[0140] The guide device 100 comprises a first part 102, which is arranged or formed on the cassette holder 98 (see, for example, Figures 22 and 23), and a second part 104, which is arranged or formed on the cassette 92. The first part 102 and the second part 104 cooperate with each other.

[0141] The holding device 94 (the cassette 92) has a peripheral wall 106. The peripheral wall 106 extends in an axial direction 108 between a first end face 110 and an opposite second end face 112. The rotation axis 96 is parallel to the rotation axis 96 of the cleaning roller 32 when the cassette 92 is properly positioned in the receptacle 84.

[0142] The axis 108 is an axial axis. The cleaning roller 32 has a cylindrical outer shape with an axial axis parallel to the rotation axis 96.

[0143] The cassette 92 can thus be assigned a circumferential direction 114 (see Figure 12) and a radial direction 116. The axial axis 108 is perpendicular to the plane of the drawing in the illustration according to Figure 12. The circumferential direction 114, the radial direction 116, and the axial axis 108 define polar coordinates.

[0144] The peripheral wall 106 has a first region 118 and a second region 120.

[0145] The second region 120 is movably arranged on the first region 118. The first region 118 extends in the circumferential direction 114 from a bottom side 122 of the circumferential wall 106, which faces the installation plane 28, to an end region 124. The end region 124 lies on an upper region 126 (see Figure 12) of the cassette 92 when the cassette 92 is properly seated on the cleaning head 12. At the upper region 126, the circumferential wall 106 has a maximum distance from the installation plane 28 relative to a height axis 128, which is perpendicular to the installation plane 28.

[0146] A first circumferential extent of the first region 118 between the front region 124 and the underside 122 is an angular range 130 which is less than 180° and in particular less than 150°.

[0147] This allows the cleaning roller 32 to be positioned in the first area 118 without jamming.

[0148] In one embodiment, the peripheral wall 106 is closed at the first region 118, that is, it is formed continuously without openings and the like.

[0149] The peripheral wall 106 has an inner side 132 which faces the cleaning roller 32 and an outer side 134 which faces away from the cleaning roller 32.

[0150] The second part 104 of the guide device 100 is located on the outer side 134.

[0151] In particular, the second part 104 of the guide device 100 is designed as a guide element in the manner of a guide block, and the first part 102 is a counter-element thereto. The second part 104 is designed in cooperation with the first part 102 such that a guide direction of the guide device 100 for the cassette 92 on the cassette holder 98 is parallel to the axis 108 or parallel to the rotation axis 96. Corresponding undercut surfaces 136 ensure that the cleaning roller 32 is held in position in directions transverse to the axis 108 or transverse to the rotation axis 96.

[0152] In one embodiment, a connection 138 of a humidification device 140 is arranged on the first region 118 of the peripheral wall 106 in the region of the second end face 112. By means of the humidification device 140, cleaning fluid from the tank device 44 can be applied to the surface 16 to be cleaned directly and, in particular, indirectly via the cleaning roller 32. In an advantageous embodiment, it is provided that, during operation of the surface cleaning device 10, cleaning fluid is applied to the cleaning roller 32 by means of a nozzle device 142, which is located on the peripheral wall 106 and there at the first region 118.

[0153] The connection 138 provides a fluid-effective connection to that part of the humidification device 140 which is positioned on the cleaning head 14 outside the cassette 92.

[0154] The second region 120 is designed as a flap 144 (see, for example, Figures 7 to 13), which is movably mounted on the first region 118 of the peripheral wall 106 via a pivot bearing device 146.

[0155] A pivot axis 148 of the pivot bearing device 146 is oriented parallel to the axis 108 and thus also parallel to the rotation axis 96.

[0156] In one embodiment, the pivot bearing assembly 156 includes a plurality of spaced pivot bearings 150 aligned along the pivot axis 148.

[0157] In the illustrated embodiment (see Figure 7), three pivot bearings 150 are provided. In one embodiment, a pivot bearing 150 comprises shaft elements 152, which are arranged on the first region 118, and receptacles 154 for each shaft element, which are arranged on the second region 120 and are formed, for example, in one piece.

[0158] The second region 120 is designed as a flap 144. A spring device 156 is associated with the pivot bearing device 146, wherein a spring force of the spring device 156 tends to press the flap 144 against the cleaning roller 32 and thereby hold it clamped to the holding device 94.

[0159] The flap 144 (the second region 120) has a closed position 158 (Figures 7, 10, 12) in which the flap 144 clamps the cleaning roller 32 to the cassette 92. The spring device 156 has a clamping force perpendicular to the rotation axis 96 (perpendicular to the axis 108) for clamping.

[0160] In an open position of the flap 144, which can be achieved by overcoming the spring force of the spring device 156, particularly by manual operation of an operator, the cleaning roller 32 can be removed from the cassette 92 (when the cassette 92 is removed from the cleaning head 12). This open position is shown in Figures 9, 11, and 13.

[0161] The flap 144 has a first end 160 and an opposite second end 162. In the region of the first end 160, the flap 144 is hinged to the first region 118 of the peripheral wall 106 via the pivot bearing device 146.

[0162] In the closed position 158 of the flap 144, the second end 162 faces the installation plane 28 (see, for example, Figure 10). In the closed position 158 of the flap 144, the peripheral wall 106 with the first region 118 and the second region 120 (of the flap 44) has a second circumferential extent with an angular range 164 which is greater than 180° and, for example, greater than 200° (see Figure

[0163] 12).

[0164] As a result, in the closed position 158, the cleaning roller 32 cannot fall off the cassette 92 in a direction transverse to the rotation axis 96 (transverse to the axis 108). In the closed position 158, with respect to these directions transverse to the rotation axis 96, a positive fit of the cleaning roller 32 to the holding device 94 via the peripheral wall 106 with its first region 118 and its second region 120 is achieved. The cleaning roller 32 is held on the cassette 92 in this respect.

[0165] By moving the flap 144 away, this form fit can be canceled (Figures 9, 11, 13).

[0166] A scraper device 166 for the cleaning roller 32 is arranged on the flap.

[0167] The cleaning roller 32 is designed in particular as a wiping roller or damp cleaning roller. It has a sleeve 168 (see Figure

[0168] 13), which in particular has an open interior space 170. A facing 172, in particular made of a textile material and, for example, a microfiber material, is seated on the sleeve 168. During cleaning operation of the surface cleaning device 10, the facing 172 is moistened with cleaning fluid (pure water or pure water with a surfactant-based cleaning agent) by the moistening device 140. By acting on the surface 16 to be cleaned, dirt can be loosened and carried along with the facing 172 of the cleaning roller 32.

[0169] It is also possible in principle for the cleaning roller 32 to be a bristle roller and accordingly to be provided with bristle bundles, or for the cleaning roller 32 to have a hybrid covering with textile areas and bristle areas.

[0170] During operation of the surface cleaning device 10 with the closed position 158 of the flap 144, the scraper device 166 is pressed onto the cleaning roller 32 and thereby onto the trim 172 towards the cleaning roller 32.

[0171] The scraper device 166 is arranged and configured such that dirty fluid is separated from the coating 172 of the cleaning roller 32 and directed to an outlet device 174. The scraper device 166 has both a separation function for dirty fluid and a conducting function.

[0172] The wiper device 166 and the outlet device 174 are located on the flap 144. The wiper device 166 comprises at least one wiper bar 176 (see Figure 13), which, during operation of the surface cleaning device 10, penetrates into the lining 172 of the cleaning roller 32 when the flap 144 is in the closed position 158 (and the cassette 92 is properly inserted on the cleaning head 12). This is indicated in Figure 13 by the reference numeral 178. The penetrating wiper bar 176 allows dirty fluid to be released from the lining 172 and drained away.

[0173] The wiper strip 176 is positioned in particular on the flap 144 between the first end 160 and the second end 162 and is spaced apart from the latter.

[0174] In particular, it extends substantially over the entire length of the cleaning roller 32 (with the direction of the rotation axis 96 as the longitudinal axis).

[0175] The wiper bar 176 is arranged and configured such that it extends in a funnel shape to the outlet device 174. The spring force of the spring device 156 presses the flap 144 against the facing 172 of the cleaning roller 32, and the wiper bar 176 is pressed to penetrate 178 into the facing 172. A spring-loaded wiper device 176 is present.

[0176] As a result, for example, manufacturing tolerances with regard to the cleaning roller or wear of the cleaning roller 32 can be compensated, since the spring-loaded pivot bearing device 146 automatically ensures correct positioning of the wiper bar 176 on the cleaning roller 32 in the function of removing and removing dirt.

[0177] When the cassette 92 is properly positioned on the cleaning head 12, the outlet device 174 (with the flap 144 in the closed position 158) is positioned such that dirty fluid is introduced directly into the dirty fluid tank device 42 via it. In particular, the dirty fluid is conveyed from the cleaning roller 32 into the tank device 42 without the use of a fan by direct coupling with a direct transport path 180 from the cassette 92 and thereby from the outlet device 174 on the flap 144 of the cassette 92 into the tank device 42 (see, for example, Figure 23).

[0178] The receptacle 84, the cassette 92 and the tank device 42 as well as their arrangement are designed such that when the cassette 92 is correctly inserted into the receptacle 84, a fluid-effective coupling of the mouth device 174 of the cassette 92 to the tank device 42 is automatically achieved for filling the tank device 42 with dirty fluid.

[0179] An edge flange 180 is arranged on the holding device 94 (of the cassette 92) at the front end 112. This edge flange 180 (see, for example, Figure 8) forms a contact surface for the cleaning roller 32 relative to the axial axis 108. When the cleaning roller 180 rests against the peripheral wall 106, it cannot fall out of the cassette 92 in the direction 108 due to the edge flange 180.

[0180] The cassette 92 (the holding device 94) has a pivot bearing 182 at the first end 110 (see Figure 15). The cleaning roller 32 can be non-rotatably mounted on this pivot bearing 182 for rotation about the rotation axis 96. This pivot bearing 192 is an integral part of the cassette 92 and faces away from the edge flange 180.

[0181] To secure it to the cassette 92, the cleaning roller 32 is first placed onto the pivot bearing 182 with the flap 144 open and then pressed against the peripheral wall 106, thereby pushing it against the first region 118 of the peripheral wall 106. It is thereby pushed over the edge flange 180, which provides an axial contact surface. The flap 144 is then closed, i.e., brought into the closed position 158 (see, for example, Figure 10). This secures the cleaning roller 32 to the cassette 92. The cassette 92 can then be pushed into the receptacle 84. With the cover 90 open (see Figures 5 and 6), it is inserted into the cassette holder 98 and pushed into the receptacle 84 in an insertion direction 184 until it is secured relative to the axial axis 108. This will be described in more detail below. The insertion takes place on the second lateral side 82 or via the second lateral side 82.

[0182] The insertion direction 184 is at least approximately parallel to the rotation axis 96.

[0183] The combination of cassette 92 with the attached cleaning roller 32 is inserted into the receptacle 84. To remove the cassette 92 with the cleaning roller 32, the cover 90 is opened and then the axial fixation is released. This is described in more detail below.

[0184] In particular, when the axial fixation is released, the cassette 92 with the cleaning roller 32 is advanced so that it protrudes beyond the second lateral side 82. The cassette 92 with the cleaning roller 32 can then be completely removed.

[0185] A removal direction 186 (Figure 5) is opposite to the insertion direction 184 and antiparallel to it.

[0186] The removal takes place at the opening 88 facing away from the transverse wall 86.

[0187] The cleaning roller 32 can then be removed from the cassette 92 and cleaned, for example, in a washing machine.

[0188] When inserting the cassette 92 with the cleaning roller 32 in the insertion direction 184 until axial fixation is achieved, an automatic fluid-effective connection of the connector 138 on the cassette with the remainder of the moistening device 140 on the cleaning head 12 occurs. The cleaning roller 32 is automatically torque-effectively coupled to a drive. The outlet device 174 is automatically aligned for fluid-effective coupling to the tank device 42 for dirty fluid.

[0189] When the cassette 92 with the cleaning roller 32 is removed and the axial fixation is released accordingly, the connection 138 is automatically uncoupled from the rest of the moistening device 140, the cleaning roller 32 is removed from a torque transmission device, and the outlet device 174 is automatically released from the fluid-effective coupling to the tank device 42. The cassette 92 has a bearing side 188 on the first end face 110 with the pivot bearing 182. Opposite, it has a bearing drive side 190. The edge flange 180 lies on this bearing drive side 190. Via the bearing drive side 190, the cleaning roller 32 is torque-coupled to a drive motor for rotation about the rotation axis 96.

[0190] The edge flange 180 and the peripheral wall 106 are designed such that the cleaning roller 32 on the cassette 92 can be driven to rotate about the rotation axis 96 even when the flap 144 is in the closed position 158.

[0191] In one embodiment, the connection 138 is located on or near the edge flange 180. For axially fixing the cassette 92 in the receptacle 84, a fixing device 192 is provided, which fixes the cassette 92 in the receptacle 84 relative to the insertion direction 184 and the removal direction 186. The guide device 100 fixes it in all transverse directions.

[0192] The fixing device 192 has a first part 194, which is arranged outside the cassette 92 and is associated with the transverse wall 86. The first part 194 of the fixing device 192 is fixedly arranged on the cleaning head body 14 in the sense that it cannot be removed from the cleaning head body 14. In embodiments, particularly with a movable cassette holder, the first part 194 itself can be movable, or it can be positioned immovably as a whole on the cleaning head body 14.

[0193] In the embodiment shown, this first part 194 of the fixing device 192 is arranged on the cassette holder 98 (see, for example, Figure 20).

[0194] In an alternative embodiment, particularly when the cassette holder 98 is fixedly (immovably) mounted on the cleaning head body 14, the first part 194 of the fixing device 192 can also be positioned directly on the transverse wall 86 and on an inner side toward the receptacle 84. A second part 196 of the fixing device 192, which corresponds to the first part 194, is arranged on the cassette 92.

[0195] In one embodiment, the second part 196 of the fixing device 192 comprises lugs 198, and in particular a plurality of lugs 198, which are seated on the edge flange 180 and in particular extend outwardly away from the edge flange 180.

[0196] The surface cleaning device 10 comprises a drive motor 200 (see Figure 16) for the rotational drive of the cleaning roller 32 rotating around the rotation axis 96.

[0197] In one embodiment (not shown in the drawings), this drive motor 200 is arranged on the cleaning head body 14, and in particular on the front region 56. Torque is transmitted from the drive motor 200 to the cleaning roller 32 via a transmission device, which, for example, comprises a belt drive and, in particular, also includes a reduction gear. With the cassette 92 fixed to the cleaning head 12, the torque is coupled to the bearing drive side 190 via a corresponding drive bearing element, onto which the cleaning roller 32 is mounted in a rotationally fixed manner with the sleeve 168.

[0198] In the illustrated embodiment, the drive motor 200 is an internal motor relative to the cleaning roller 32. The drive motor 200 is an integral part of the cleaning head 12 and is arranged at the rear region 54.

[0199] There is a connection to the control device via control lines and an electrical connection to the battery device 70. It is particularly provided that, when the cassette holder 98 is movable (as described in more detail below), the drive motor 200 is fixedly connected to the cassette holder 98 and is movable with it.

[0200] If the cassette holder 98 is not movable, the drive motor 200 is arranged, for example, on the transverse wall 86 and in particular is directly or indirectly connected thereto.

[0201] The drive motor 200 is positioned in the receptacle 84 and extends over a certain area relative to a longitudinal axis parallel to the rotation axis 96.

[0202] A motor driver 202 is provided, which is positioned in the interior 170 of the sleeve 168 when the cleaning roller 32 is mounted on the drive motor 200. The motor driver 202 is rotationally fixedly coupled to the cleaning roller 32.

[0203] In a variant of an embodiment (Figure 19), a drive motor 204 is provided, which is located externally relative to the sleeve 168 of the cleaning roller 32. A driver 206 is coupled to the drive motor 204 in a rotationally fixed manner and projects into the sleeve 168 of the corresponding cleaning roller 32.

[0204] The fixing device 192 ensures the axial fixing of the cassette 92 to the cleaning head body 14, away from the second lateral side 82. As a result, no space needs to be provided, particularly above the opening 88, for a fixing device for the cassette 92 to the cleaning head body 14. This space can then be used, for example, for the tank 44, or the cleaning head 12 can be realized with a lower height parallel to the height axis 128.

[0205] In one embodiment, the fixing device 192 is designed as a push-to-release touch latch 208. The push-to-release touch latch 208 (also referred to as a "push-to-release" touch latch), which is positioned in the region of the transverse wall 86, provides a "push-to-release" mechanism. Axial fixing can be achieved, and the axial fixing (for removing the cassette 92 from the receptacle 84) can be released by applying pressure to the cassette 92, with this pressure being applied in a direction that is at least approximately parallel to the insertion direction 184. Furthermore, the pressure can be applied to the cassette 92 in the region of the opening 88, i.e., at a "large" distance from the fixing device 192.

[0206] A fixing area, with which the cassette 92 is fixed axially (relative to the axis 108) with respect to the cleaning head 14, is positioned in particular at a front end of the receptacle 84 and thereby in the receptacle 84 or in an extension of the receptacle 84 in front of the transverse wall 86. The space already provided by the receptacle 84 is then used in an optimized manner for positioning the fixing device 192.

[0207] Snap-on devices are well known and are used, for example, in furniture construction.

[0208] In one embodiment, the pressure snap device 208 comprises a housing 210 on the first part 194. The housing 210 has receptacles for the lugs 198 facing the receptacle 84. The lugs can be brought into the receptacle of the housing 210 in the manner of a snap connection, achieving axial fixation. This connection can be released by applying pressure in a direction parallel to the insertion device 194.

[0209] It may be provided that a spring device is also arranged on the housing 210, which, when the connection is released, provides a feed to the cassette 92 and, in a sense, "ejects" it. The pressure snap device 208 can be designed with relatively small dimensions in a direction parallel to the axis 108, so that it can be positioned at the end of the receptacle 84 as described.

[0210] The feed rate through the snap-action pressure device 208 is in particular at least 0.5 mm and preferably at least 1 mm. The greater the feed rate, the more favorable.

[0211] As will be explained below, an additional feed device 212 may be provided which, in addition to the feed of the pressure snap device 208, causes a further feed in order to eject the cassette 92 "even further" upon release of the fixation of the fixation device 192 and in particular to eject it through the opening 88.

[0212] The lid 90 serves to close the receptacle 84 at the opening 88. It is also the function of this lid 90 to prevent accidental release of the cassette 92. For example, with the "push-to-release" mechanism of the snap-action device 208, there is a fundamental possibility that impacting an object in the area of ​​the opening 88 could generate a compressive force on the cassette 92 in the direction of the transverse wall 86, thereby releasing the cassette 92. This risk does not exist when the lid 90 is closed.

[0213] In one embodiment, the cover 90 is fixedly (captively) connected to the cleaning head body 14. For this purpose, a corresponding hinge 214 with a pivot axis 216 is provided. In one embodiment, the pivot axis 216 is oriented transversely and in particular perpendicularly to the installation plane 28. It is oriented transversely and in particular perpendicularly to the insertion device 184 or removal direction 186. It is oriented transversely and in particular perpendicularly to the rotation axis 96. It is oriented transversely and in particular perpendicularly to the main travel direction 26. In particular, the cover is arranged laterally via the hinge 214 and, for example, is arranged on the side on which the cassette holder 98 is also oriented on the cleaning head body 14.

[0214] When the cover 90 is opened (Figures 5, 6), the cover 90 is pivoted from the rear end 38 to the front end 36.

[0215] The hinge 214 is, for example, spring-loaded to ensure good closure of the opening 88 on the second lateral side 82.

[0216] It is particularly provided that when the lid 90 is closed (Figure 4), the lid 90 is spaced apart from the cassette 92 and thereby from the second end face 112, so that no pressure force (which could trigger the "push-to-release" mechanism of the fixing device 192) acts on the cassette 92.

[0217] To fix the cassette 92 (with the cleaning roller 32) to the receptacle 84, the cassette 92 is moved into the receptacle 94 in the insertion direction 184 with the cover 90 open. The cassette 92 is aligned such that the first part 102 and the second part 104 of the guide device 100 engage with each other.

[0218] The cassette 92 is displaced in the insertion direction 184 until the first part 194 and the second part 196 of the fixing device 192 (the pressure snap device 208) correspond to each other and an axial fixing is achieved.

[0219] This can be indicated acoustically, for example, by a clicking sound.

[0220] To remove the cassette 92, starting from the closed cover 90 (Figure 4), the cover 90 is opened. The cassette 92 is then pressed in the area of ​​the opening 88 in a direction of pressure at least approximately parallel to the insertion direction 184. This releases the fixation at the fixing device 192 and the connection between the first part 194 and the second part 196. The cassette 92 detaches from the cleaning head body 14. In the illustrated embodiment, the cassette 92 detaches from the cassette holder 98 with respect to the axial direction 108.

[0221] In one embodiment, the fixing device 192 is also designed such that the cassette 92 is fed in a direction parallel to the removal direction 186 when the fixing is released.

[0222] In one embodiment, a feed device 218 is additionally or alternatively assigned to the cleaning roller 32. In one embodiment (Figure 16), the feed device 218 is positioned in the interior space 170 of the sleeve 168.

[0223] The feed device 218 has a spring device 220, which is supported both on the cleaning roller 32 (within the sleeve 168) and on the drive motor 200, and at the front end on the drive motor 200. When the cassette 92 is properly positioned on the cleaning head 12, the spring device 220 is under tension. It is compressed, for example, during insertion. When the cassette 92 is released from the fixing device 192, the spring device 220 relaxes, and the cassette 92 is imparted a feed, and in particular an additional feed, by acting on the cleaning roller 32.

[0224] This feed is in particular at least 0.5 cm and preferably at least 1 cm and in particular at least 2 cm.

[0225] The drive motor 200 is non-removably mounted on the cleaning head 12. It provides a support surface for the spring device 220, which ensures movement or additional movement of the cassette 92 in the removal direction 186 upon release of the fixation by the fixation device 192. It is particularly provided that the overall advance of the cassette 92 upon release of the fixation by the fixation device 192, and in particular by the "push-to-release" mechanism, is such that the cassette 92 is pushed through the opening 88 beyond the second lateral side 82. This allows an operator to more easily grasp the cassette 92 and then pull it completely out of the receptacle 84 in the removal direction 186.

[0226] Depending on the design, the total feed is generated solely by the pressure snap device 208, solely by the feed device 218 or as a total feed of individual feeds of the pressure snap device 208 and the feed device 202.

[0227] As an alternative to a pivotable cover 90, it is also possible to provide a cover 222 (Figure 26(a)) that can be completely removed from the cleaning head body 14 (Figure 26(b)). In particular, the cover 222 is held to the cleaning head body 14 via pin elements on the cover or on the cleaning head body 14.

[0228] In a further embodiment (Figures 27 to 29(b)), a cover 224 is fixedly arranged on the cassette 92.

[0229] The cover 224 is arranged and designed such that it does not exert any compressive force on the cassette 92 (which could lead to an unintentional release of the fixing device 192). For example, the cover 222 is pivotally mounted on the cassette 92 (see Figures 28(a) and 28(b)). A conversion mechanism is provided (not shown in the drawing) which causes pivoting of the cover 222 (according to Figure 28(b)) to exert pressure on the cassette 92 parallel to the insertion direction 184. This then allows the cassette 92 to be released with the cover 224. In a further embodiment (Figures 29(a) and (b)), a cover 226 is provided which is mounted on the cassette 92 in a linearly movable manner.By a linear movement of the lid 226 (Figure 29(b)), a compressive force parallel to the insertion direction 184 is then generated via a transfer mechanism, which in turn leads to a release of the fixation on the fixing device 192 and possibly a feed in the removal direction 186.

[0230] The cassette 92 with cover 224 or 226 can be removed.

[0231] A receiving wall 228 (see, for example, Figures 23 and 24) is located on the cleaning head body 14, through which the receptacle 84 is formed. It is fundamentally possible for the cassette holder 98 to be formed via the receiving wall 228 and, in particular, for the first part of the guide device 100 to be arranged on the receiving wall 228 or to be formed by it.

[0232] In one embodiment, the cassette holder 98 is separate from the receiving wall 228 and movably positioned within the receptacle 84.

[0233] A pivot bearing device 230 is provided, by which the cassette holder 98 is pivotally mounted on the cleaning head 14.

[0234] A pivot axis 232 (see Figure 21) is parallel to the axis 108 or parallel to the rotation axis 96. It is transverse and in particular perpendicular to the insertion direction 184 or the removal direction 186. It is transverse and in particular perpendicular to the main travel direction 26.

[0235] The pivot axis 232 is parallel to the installation plane 28.

[0236] The cassette holder 98 has a wall 234 (see Figures 21, 23), with the first part 102 of the guide device 100 formed on an inner side of the wall 234. A transverse region 236 (see Figures 21, 22) is located on the wall 234. This transverse region 236 holds the first part 194 of the fixing device 192. The transverse region 236 also holds the drive motor 200 via a corresponding holder 238.

[0237] In an alternative embodiment, in which the drive motor is located outside the receptacle 84 on the cleaning head body 14, a torque coupling to a gear is effected via the transverse region 236.

[0238] Spaced-apart webs 242 are arranged on an outer side 240 of the wall 234. These webs protrude outwardly from the wall 234 and away from the receptacle 84.

[0239] In one embodiment (see Figure 21), the webs 242 are bow-shaped. The pivot bearing device 230 is formed by the webs 242, and in particular the part that sits on the cassette holder 98. This part cooperates with another part that sits on the cleaning head body 14.

[0240] The receiving wall 228 has openings 244 that cooperate with the webs 242. A web 242 (or a web combination in the case of the bracket shape) extends through each opening 244. The counterpart 246 to a web 242, by means of which the pivot bearing device 230 is then formed, is, as mentioned above, fixedly positioned outside the receptacle 84 on the cleaning head body 14.

[0241] The receptacle 84 is thus positioned between the pivot bearing device 230 and the rear end 38 of the cleaning head 12. When the cassette 92 with the cleaning roller 32 is seated on the cleaning head 12, it is positioned between the pivot bearing device 230 and the tank device 42. The counterpart 246 of the pivot bearing device 230 is seated, in particular, on the front region 56 of the cleaning head body 14.

[0242] In the embodiment shown, two counterparts 246 are provided for cooperation with two webs or web combinations 242.

[0243] A spring device 248 is assigned to the pivot bearing device 230. In particular, each pivot bearing of the pivot bearing device 230, which is formed by a counterpart 256 and an associated web or web combination 242, is assigned (at least) one spring, such as a spiral spring.

[0244] The spring device 248 is arranged and designed such that it exerts a spring force which tends to press the cassette holder 98 against the mounting plane 28.

[0245] Basically, the force with which the cleaning roller 32 is pressed against the surface 16 to be cleaned during cleaning operation, particularly in the case of a floor, is determined by the weight of the cleaning head 12. The movable cassette holder 98 with the pivot bearing device 230 and the spring device 248 allows the cleaning roller 32 to be pressed against the surface 16 to be cleaned with an additional force provided by the spring device 248. This allows an improved cleaning result to be achieved.

[0246] In one embodiment, this additional force is in the range between 7 N and 17 N.

[0247] The movable and resilient mounting of the cleaning roller 32 via the cassette holder 98 also allows a type of floating mounting of the cleaning roller 32 on the cleaning head 12. This makes it possible for the cleaning roller 32 to avoid obstacles (through movement of the cassette holder 98) by briefly lifting itself away from the surface 16 (lifting itself upwards) (via the cassette holder 98).

[0248] The spring force of the spring device 248 causes such a lift to remain for a short time and, as soon as the obstacle has been removed, the cassette holder 98 is moved again in the direction of the installation plane 28 and the cleaning roller 32 is pressed against the surface to be cleaned.

[0249] In principle, it is possible for the spring device 248 to be adapted to the specific application. The spring force should not be so high that the cleaning head body 14 lifts off; that is, the mounting plane 28 must be maintained. For example, it is generally possible that a smaller spring force is sufficient for a floating mounting than if a stronger pressure of the cleaning roller 32 against the surface 16 to be cleaned is desired.

[0250] The installation plane 28 is defined by the wheels 20 and the support roller 24. The brush roller 30 is located on the installation plane 28. When the cassette holder 98 is immobile, the cleaning roller 32 is also located on the installation plane 28.

[0251] In the inventive solution with movable cassette holder 98, the cleaning roller 32 is generally only positioned on the support plane 28 when the cleaning head 12 is properly positioned on the surface 16. When the cleaning head 12 is lifted, the spring force of the spring device causes the cleaning roller 32 to be pushed downward beyond the support plane until a stop is reached.

[0252] The surface cleaning device 10 comprises an active lifting device 250 (see Figure 3) for lifting the cassette holder 98 in a direction away from the installation plane 28, so that, in particular, the cleaning roller 32 is spaced from the installation plane 28 and, at the same time, spaced from the surface 16 (see Figure 24). In such a position 252 of the cleaning roller 32, it does not touch the surface 16. This can be useful, for example, if only carpet cleaning is to be carried out using the brush roller 30. The lifting device 250 can make the cleaning roller 32 inactive with respect to surface contact.

[0253] The corresponding position 252 can also be useful, for example, if cleaning of the surface cleaning device 10 and in particular of the cleaning roller 32 is to be carried out at a station (ground station).

[0254] In one embodiment, the lifting device is designed as a cable pulling device 254. It comprises a pulling cable 256. The pulling cable 256 is fixed to the cassette holder 98 at its end via a fastening element 258 (Figures 3, 21 to 23).

[0255] The fastening element 258 is located on the upper part of the wall 234. This allows for space-saving access.

[0256] The fastening element 258 is in particular arranged at least approximately centrally between opposite end faces of the cassette holder 98.

[0257] The cable pull device 254 further comprises a motor 260 with a gear. This motor 260 is arranged on the front region 56 of the cleaning head body 14 and, in particular, in the region of the battery device 70.

[0258] In one embodiment, the motor 260 is positioned relative to the longitudinal axis 40 between the receptacle 58 for the dirt collection container and the front end 36 of the cleaning head body 14.

[0259] The motor 260 is positioned in particular near the blower device 62. In one embodiment, it is further provided that the motor 260 is arranged on the same side as the blower device 62.

[0260] The traction cable 256 is guided along the receptacle 58 in a first region 262. A change of direction then occurs at a second region 264. The second region 264 is guided, in particular, above the blower device 62.

[0261] At a third area 266, a further change of direction occurs and a coupling to the motor 260 occurs.

[0262] By activating the motor 260 and exerting a corresponding pulling force on the pull cable 256, the cassette holder 98 with the cassette 92 and the cleaning roller 32 can be lifted. It is pulled upward (Figure 24) to reach the position 252.

[0263] The motor 260 maintains this position 252. In particular, it is intended that the position 252 is also maintained when the motor 260 is not operating (not supplied with electrical energy).

[0264] It is further specifically provided that activation of the motor 260 is necessary to move the cassette holder 98 out of position 252 and thereby lower it. The motor 260 then effectively cancels the tension by rotating in a direction opposite to a lifting direction, and the spring device 248 then causes the lowering.

[0265] In one embodiment, the cable pull device 254 comprises a pulley element 268. The pulley element 268 is arranged, for example, on the first region 262 of the pull cable 256. In one embodiment, the pulley element 268 is arranged on the rear region 54 of the cleaning head body 14.

[0266] In particular, it is arranged closest to the receptacle 58 (see Figure 3).

[0267] The pulley element 268 has a displacement element 270 that is displaceably mounted. In one embodiment, a displacement direction 272 is oriented parallel to the rotation axis 96.

[0268] The displacement direction 272 is in particular a linear direction.

[0269] A first traction cable 274 is guided in a loop 276 on the displacement element 270. The displacement element 270 acts as a kind of pulley for the first traction cable 274.

[0270] The first traction cable 274 is fixedly connected at one end 278 (possibly using a spring device) to the cleaning head body 14 and, for example, to the rear region 54.

[0271] At another end 280, this first pull cable 274 is connected to the motor 260. (In Figure 25, the motor 260 is indicated, but its actual position is shown in Figure 3.)

[0272] Loop 276 lies between ends 278 and 280.

[0273] A second traction cable 282 is fixedly connected to the displacement element 270 at a corresponding end 284. At another end, it is connected to the fastening element 258.

[0274] By activating the motor 260, the displacement element 270 is displaced in the displacement direction 272. This drives the second pull cable 282, i.e., tension is exerted, allowing the cassette holder 98 to be raised. A corresponding reset occurs.

[0275] The pulley element 268 allows the necessary motor power to be halved, resulting in a doubling of the travel distance.

[0276] The first pull cable 274 and the second pull cable 282 form the pull cable 256. The first region 262 of the pull cable 256 comprises the second pull cable 282 and a part of the first pull cable 274. The second region 264 and the third region 266 are formed on the first pull cable 274.

[0277] In one embodiment, the first pull cable 274 is fixed to the cleaning head body 14 via a spring device 286. The spring device 286 ensures that the first pull cable 274 is constantly under tension.

[0278] The surface cleaning device 10 was described above as a self-propelled and self-steering floor cleaning machine. The inventive solutions, in particular the flap 144, the push-to-release fixing device 192, and the movable and particularly spring-supported mounting of the cassette holder 98, can also be used alone or in combination with other types of surface cleaning devices, such as surface cleaning devices that are manually guided by a standing operator via a handle.

[0279] The surface cleaning device 10 according to the invention functions as follows:

[0280] For a cleaning operation, the cleaning roller 32 is inserted into the cassette 92, which is located outside the cleaning head 12. To do this, the flap 144 is opened, and then the cleaning roller 32 is inserted into the cassette 92. The state shown in Figure 7 is then achieved.

[0281] The flap 144 holds the cleaning roller 32 to the cassette 92. Furthermore, the wiper device 166 and the outlet device 174 are also integrated into the flap 144. During operation of the surface cleaning device 10, the at least one wiper bar 176 is pressed against or, in particular, into the lining 172 of the cleaning roller 32.

[0282] After fixing the cleaning roller 32 to the cassette 92, an operator pushes the cassette 92 with the cleaning roller 32 into the receptacle 84. To do so, the cover 90 is opened and the cassette 92 is pushed in. It is pushed in such a way that the second part 104 and the first part 102 of the guide device 100 engage.

[0283] The cassette 92 is displaced in the insertion direction 184 toward the transverse wall 86 until the fixing device 192 can engage. The first part 194 of the fixing device 192 is connected to the second part 196 on the cassette 92.

[0284] The cassette 92 is thereby fixed in the receptacle 84 relative to the axis 108. At the same time, a fluid-effective connection of the moistening device 140 to the cassette 92 is established, the outlet device 174 is aligned with the tank device 42, and the drive motor 200 is rotationally coupled to the cleaning roller 32.

[0285] The cover 90 is closed.

[0286] A cleaning operation can then be carried out.

[0287] The movable cassette holder, supported by the spring device 248, allows the cleaning roller 32 to be pressed against the surface 16 to be cleaned during cleaning operation. This creates a floating bearing. The contact pressure can be increased to improve the cleaning effect. The cleaning roller 32 can be lifted via the cable pull device 254. This renders it inactive with regard to the cleaning effect (see Figure 24).

[0288] If, for example, a cleaning process is to be carried out only on a textile surface, the cleaning roller 32 is deactivated accordingly. An operator sets this accordingly and the control device activates the cable pull device 254, or a sensor detects the type of surface (such as floor type) and upon detection of a textile floor, the cable pull device 254 is automatically and independently activated in order to reach the position 252 of the cleaning roller 32.

[0289] After completing a cleaning process, an operator can remove the cleaning roller 32, for example, to wash it in a washing machine. To do so, they open the cover 90. By applying pressure to the cassette 92 or the cleaning roller 32 in the area of ​​the opening 88 at a corresponding end 288 (see Figure 5), they release the fixing device 192. The pressure snap device 208 provides a "push-to-release" mechanism.

[0290] In addition to the solution of the fixation of a fixing device 192, a feed takes place, which can be amplified by the feed device 212.

[0291] In particular, the cassette 92 with the cleaning roller 32 is then pushed slightly out of the opening 88 to enable easier removal.

[0292] An operator can then remove the cassette 92 containing the dirty cleaning roller (see, for example, Figure 7). By lifting the flap 144, the operator can remove the cleaning roller 32 from the cassette 92.

[0293] Surface cleaning device

[0294] cleaning head

[0295] Cleaning head body

[0296] Area (ground)

[0297] Drive

[0298] Wheels a First wheel b Second wheel

[0299] wheel axle

[0300] Support roller

[0301] Main direction of travel (forward direction)

[0302] Installation level

[0303] Brush roller

[0304] cleaning roller

[0305] Navigation device

[0306] Front end

[0307] Rear end

[0308] Longitudinal axis

[0309] Tank facility for dirty fluid

[0310] Tank facility for cleaning fluid

[0311] bottom

[0312] Top

[0313] Impact body

[0314] Cliff sensor

[0315] Rear area

[0316] Front area

[0317] Recording

[0318] Connection

[0319] Blower device

[0320] Recording area rotation axis

[0321] drive motor

[0322] Battery setup

[0323] Contact elementa side brush b side brush

[0324] drive motor

[0325] Lid

[0326] First lateral page

[0327] Second lateral side

[0328] Recording

[0329] Transverse wall

[0330] opening

[0331] Lid

[0332] cassette

[0333] Holding device

[0334] rotation axis

[0335] Cassette holder 0 Guide device2 First part 4 Second part 6 Circumferential wall8 Axis (axial axis)0 First end face 2 Second end face4 Circumferential direction 6 Radial direction 8 First area 0 Second area 2 Bottom 4 End face 6 Upper area 8 Height axis Angle area Inside Outside Undercut surface Connection

[0336] Humidification device Nozzle device Flap

[0337] Pivot bearing device Pivot axis Pivot bearing Shaft element Receptacle Spring device Closed position First end Second end Angular range

[0338] Stripper device sleeve

[0339] Interior trimmings mouth device scraper bar "penetration" edge flange pivot bearing insertion direction removal direction bearing side

[0340] Bearing drive side Fixing device First part Second part

[0341] Nose

[0342] drive motor

[0343] Motor driver

[0344] drive motor

[0345] Driver

[0346] Snap-action housing

[0347] Feed device hinge

[0348] Swivel axis

[0349] Feed device spring device cover

[0350] Lid

[0351] Lid

[0352] Receiving wall swivel bearing device swivel axis

[0353] wall

[0354] transverse area

[0355] holder

[0356] outside

[0357] web

[0358] opening

[0359] Counterpart spring device lifting device position

[0360] Cable pull device pull rope

[0361] Fastening element engine, gearbox first area

[0362] Second area

[0363] Third area

[0364] Pulley element

[0365] Displacement element

[0366] Direction of displacement

[0367] First pull rope

[0368] loop

[0369] End

[0370] End

[0371] Second pull rope

[0372] End

[0373] Spring device

[0374] End

Claims

Patent claims 1. Surface cleaning device, comprising a cleaning head (12) with a cleaning head body (14), at least one cleaning roller (32) rotatable about a rotation axis (96), a drive motor (200) for the at least one cleaning roller (32), and at least one cassette (92) with a holding device (94) for the at least one cleaning roller (32), wherein the at least one cleaning roller (32) is rotatably mounted on the holding device (94) and the at least one cassette (92) is removably seated on the cleaning head (12), characterized in that a cassette holder (98) is movably arranged on the cleaning head body (14), on which cassette holder the at least one cassette (92) is removably held.

2. Surface cleaning device according to claim 1, characterized in that the cassette holder (98) is mounted on a pivot bearing device (230) on the cleaning head body (14) so as to be pivotable about a pivot axis (232).

3. Surface cleaning device according to claim 2, characterized by at least one of the following: the pivot axis (232) of the pivot bearing device (230) is parallel to a mounting plane (28) of the cleaning head (14) for a surface (16) to be cleaned; the pivot axis (232) is parallel to the rotation axis (98) of the at least one cleaning roller (32); the pivot axis (232) is transverse and in particular perpendicular to a forward travel direction (26) of the cleaning head (12); the pivot axis (232) is parallel to an insertion direction (184) of the at least one cassette on (92) the cleaning head (12) and / or to a removal direction (186) of the at least one cassette (92) from the cleaning head (12).

4. Surface cleaning device according to claim 2 or 3, characterized in that, with respect to a longitudinal axis (40) of the cleaning head (12), the at least one cleaning roller (32) is positioned between the pivot bearing device (230) and a tank device (42) for dirty fluid on the cleaning head (12).

5. Surface cleaning device according to one of the preceding claims, characterized by a guide device (100) for guiding the at least one cassette (92) in a removal direction (186) and insertion direction (184) and for holding the at least one cassette (92) on the cassette holder (98) in a direction transverse to the removal direction (186) and insertion direction (184), wherein the guide device (100) has a first part (102) which is arranged on the cassette holder (98), and a second part (104) which cooperates with the first part (102) and is arranged on the at least one cassette (92).

6. Surface cleaning device according to claim 5, characterized in that the first part (102) of the guide device (100) is arranged or formed on a wall (234) of the cassette holder (98), and that a part (242) of the pivot bearing device (230) is seated on the wall (234).

7. Surface cleaning device according to one of the preceding claims, characterized in that at least one web (242) is arranged on a wall (234) of the cassette holder, which web projects transversely from the wall (234), and in that a first part of a pivot bearing device (230) is seated on the at least one web (242).

8. Surface cleaning device according to claim 7, characterized in that a second part (246) of the pivot bearing device (230), which cooperates with the first part, is seated on the cleaning head body (14).

9. Surface cleaning device according to claim 7 or 8, characterized in that the cassette holder (98) is movably positioned in a receptacle (84) of the cleaning head (12) for the at least one cleaning roller (32), that the receptacle (84) has a receptacle wall (228), and that the at least one web (242) is penetrated through an opening (244) of the receptacle wall (228).

10. Surface cleaning device according to claim 9, characterized in that the pivot bearing device (230) is positioned on the cleaning head body (14) outside the receptacle (84).

11. Surface cleaning device according to one of the preceding claims, characterized in that a fixing device (192) is provided for releasably fixing the at least one cassette (92) to the cassette holder (98) in a removal direction (186) and an insertion direction (184), and in that the fixing device (192) has a first part (194) which is seated on the cassette holder (98), and a second part (196) which cooperates with the first part (194) and is seated on the at least one cassette (92).

12. Surface cleaning device according to claim 11, characterized in that the fixing device (192) is designed as a pressure snap device (208) and the second part (196) has at least one nose (198).

13. Surface cleaning device according to one of the preceding claims, characterized in that the cassette holder (98) is assigned a spring device (248) which is arranged and designed such that a spring force of the spring device (248) tends to press the cassette holder (98) with the at least one cleaning roller (32) in the direction of a surface (16) to be cleaned.

14. Surface cleaning device according to claim 13, characterized in that the spring device (248) is arranged on a pivot bearing device (230).

15. Surface cleaning device according to claim 13 or 14, characterized in that the spring device (248) is designed such that it presses the at least one cleaning roller (32) with a force in the range between 7 N and 20 N against a surface (16) to be cleaned.

16. Surface cleaning device according to one of the preceding claims, characterized by a cable pulling device (254) for lifting the movable cassette holder (98) away from a mounting plane (28) of the cleaning head (12) for a surface (16) to be cleaned, in particular by overcoming a spring force of a spring device (248) which tends to press the cassette holder (98) in the direction of the surface (16).

17. Surface cleaning device according to claim 16, characterized in that the cable pull device (254) has a motor (260) and preferably a gear, in particular with at least one of the following: the motor (260) and / or the gear is positioned in a front region (56) of the cleaning head (12), which is remote from a rear region (54) on which the at least one cleaning roller (32) is positioned; the motor (260) and / or the gear is positioned on the same side of the cleaning head body (14) as a blower device (62) and / or a drive device (68) for a brush roller (30); the motor (260) and / or the gear is positioned in the region of a battery device (70) on the cleaning head body (14).

18. Surface cleaning device according to claim 16 or 17, characterized in that the cable pulling device (254) has a pulling cable (256) which is fixed to the cassette holder (98) via at least one fastening element (258).

19. Surface cleaning device according to claim 18, characterized by at least one of the following: exactly one fastening element (258) is provided; the at least one fastening element (258) is seated in a central region of the cassette holder (98) with respect to opposite front ends of the cassette holder (98); the at least one fastening element (258) is seated in an upper region of the cassette holder (98), which faces away from a mounting plane (28) of the cleaning head (12) for a surface (16) to be cleaned.

20. Surface cleaning device according to one of claims 15 to 19, characterized in that a pulling cable (256) of the cable pulling device (254) is guided laterally past a receptacle (58) of a dirt collecting container.

21. Surface cleaning device according to one of claims 15 to 20, characterized in that the cable pulling device (254) comprises a pulley element (268).

22. Surface cleaning device according to claim 21, characterized in that the pulley element (268) is arranged between a receptacle (58) for a dirt collecting container and the at least one cassette holder (98).

23. Surface cleaning device according to claim 21 or 22, characterized in that the pulley element (268) has a displacement element (270) which is guided displaceably and in particular linearly displaceably, that a first traction cable (274) with a loop (276) is guided on the displacement element (270), and that a second traction cable (282) is fixed in a displacement-proof manner with respect to the displacement element (270).

24. Surface cleaning device according to claim 23, characterized in that the first pull cable (274) is connected to a motor (260) and the second pull cable (282) is connected to the cassette holder (98).

25. Surface cleaning device according to claim 23 or 24, characterized in that a spring device (286) is arranged on the pulley element (268), which spring device ensures a cable tension, in particular in the first pull cable (274).

26. Surface cleaning device according to one of the preceding claims, characterized in that the drive motor (200) for the at least one cleaning roller (32) is positioned in a receptacle (84) for the holding device (94), on which the at least one cleaning roller (32) is placed during operation of the surface cleaning device.

27. Surface cleaning device according to one of the preceding claims, characterized by at least one of the following: - the at least one cleaning roller (32) has a textile trim and in particular a microfiber trim; - the at least one cleaning roller (32) is designed as a wet wiping roller; - the at least one cleaning roller (32) is designed as a cleaning roller for a hard surface.

28. Surface cleaning device according to one of the preceding claims, characterized by a self-propelled and self-steering design and in particular by the design as a vacuum robot or as a mop robot or as a vacuum-mop robot.

29. Surface cleaning device according to one of the preceding claims, characterized by at least one of the following: - the at least one cleaning roller (32) is assigned a tank device (42) for dirty fluid, which is in particular removably mounted on the cleaning head (12); - Dirty fluid is conveyed from the at least one cleaning roller (32) to a tank device (42) without a blower or via a blower device; - a moistening device (140) is provided which applies cleaning fluid to the at least one cleaning roller (32) and / or a surface (16) to be cleaned; - the at least one cleaning roller (32) is assigned a scraper device (166) for scraping dirt fluid from the at least one cleaning roller (32).

30. Surface cleaning device according to one of the preceding claims, characterized by at least one of the following: - at least one rotatable brush roller (30) is located on the cleaning head (12) in addition to the at least one cleaning roller (32), and a blower device (62) for generating a suction flow is assigned to the at least one brush roller (30); - the at least one brush roller (30) is assigned a dirt collecting container which is removably mounted on the cleaning head (12) and which serves in particular to collect dry dirt.

31. Method for operating a surface cleaning device which has a cleaning head (12) with a cleaning head body (14), at least one cleaning roller (32) rotatable about a rotation axis (92), a drive motor (200) for the at least one cleaning roller (32) and at least one cassette (92) with a holding device (94) for the at least one cleaning roller (32), in which the at least one cassette (92) is removably positioned on a movable cassette holder (98) and the at least one cleaning roller (32) is pressed against a surface (16) to be cleaned via the movable cassette holder (98) by a spring device (248).

32. Method according to claim 31, characterized in that the at least one cleaning roller (32) can be lifted by a cable pulling device (254) above the cassette holder (98) relative to a mounting plane (28) of the cleaning head (12) for a surface (16) to be cleaned.

Images