Surface cleaning device with fixing device, and method for removing a cassette

Abstract

The invention relates to a surface cleaning device, comprising a cleaning head (12) with a cleaning head body (14); at least one cleaning roller (32) which can be rotated about a rotational axis (92); a drive motor (200) for the at least one cleaning roller (32); 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 supported on the cleaning head body (14); and a receiving area (84) which is designed for the at least one cassette (92) and is provided on the cleaning head body (14) and which is closed towards a first lateral side (80) of the cleaning head body (14) by means of a transverse wall (86) and open towards a second lateral side (82) of the cleaning head body (14) by means of an opening (88), said second lateral side lying opposite the first lateral side (80). The at least one cassette (92) can be removed from the cleaning head body (14) in a removal direction (186) and can be inserted into the cleaning head body (14) in an insertion direction (184) on the second lateral side (82) at the opening (88), and a fixing device (192) is provided, by means of which the at least one cassette (92) can be fixed to the cleaning head body (14) in the region of the transverse wall (86) with respect to the removal direction (186) and the insertion direction (184).

Description

[0001] Surface cleaning device with fixing device and method for removing a cassette

[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 rotational axis, a drive motor for the at least one cleaning roller, 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 seated on the cleaning head body, a receptacle for the at least one cassette, which is arranged on the cleaning head body and which is closed towards a first lateral side of the cleaning head body by a transverse wall and is open towards a second lateral side of the cleaning head body opposite the first lateral side through an opening,wherein the at least one cassette on the second lateral side at the opening is removable from the cleaning head body in a removal direction and is insertable onto the cleaning head body in an insertion direction.

[0003] The invention further relates to a method for removing a cassette.

[0004] US 2017 / 0055791 Al discloses a surface cleaning device.

[0005] DE 10 2012 207 356 A1 discloses a nozzle for a floor cleaning device.

[0006] CN 2 16 907 837 U discloses a cleaning mechanism and a cleaning robot.

[0007] WO 2023 / 152082 A1 discloses a surface cleaning device comprising a cleaning head, at least one cleaning roller, and a drive motor with at least one drive shaft for the at least one cleaning roller. The drive motor and the at least one drive shaft are arranged on the cleaning head, and the at least one drive shaft rotates about a rotational axis during operation of the surface cleaning device. The at least one cassette is removably positioned on the cleaning head with a holding device for the at least one cleaning roller.The holding device has at least two spaced-apart stops for the at least one cleaning roller, by means of which the at least one cleaning roller is removably held on the at least one cassette when at least one cassette is removed from the cleaning head, and when at least one cassette is arranged on the cleaning head, the at least one cleaning roller is coupled to the at least one drive shaft in a torque-effective manner.

[0008] EP 3 245 927 A1 discloses a cleaning device.

[0009] DE 10 2016 111 808 Al discloses a wet cleaning device.

[0010] The invention is based on the object of providing a surface cleaning device of the type mentioned above, in which the at least one cassette can be fixed to the cleaning head in a space-saving manner.

[0011] This object is achieved according to the invention in the surface cleaning device mentioned at the outset in that a fixing device is provided by which the at least one cassette can be fixed to the cleaning head body in the region of the transverse wall with respect to the removal direction and the insertion direction.

[0012] In the solution according to the invention, the at least one cassette is secured to the cleaning head by the securing device, which is located, so to speak, inside the cleaning head. This eliminates the need for a securing device in the area of ​​the opening on the second lateral side. This, in turn, results in optimized space utilization of the surface cleaning device, for example, for a tank for cleaning fluid, and the cleaning head can be designed with a low height.

[0013] The fixing device is located in the area of ​​the transverse wall. It is arranged in particular in front of the transverse wall or on the transverse wall and at one end of a receptacle for the at least one cassette.

[0014] The solution according to the invention also makes it possible to easily implement a "push-to-release" mechanism for releasing the at least one cassette.

[0015] It is particularly advantageous if the fixing device is designed as a snap-action pressure device, in which the connection between the at least one cassette and the cleaning head can be released by applying pressure in a direction parallel to the insertion direction. This allows for a "push-to-release" device. By applying pressure to the at least one cleaning roller or the at least one cassette, the fixing device located "inside the cleaning head" can be influenced in such a way that the fixing is released.

[0016] In particular, the fixing device is designed such that, when at least one cassette is positioned on the cleaning head in the receptacle and secured by the fixing device, the fixing to the fixing device is released by exerting pressure on the at least one cassette in a direction parallel to the insertion direction. This results in simple operation.

[0017] Furthermore, it is advantageous if at least one of the following is provided: the fixation can be released by exerting pressure on the at least one cassette in the region of the opening of the receptacle; upon release of the fixation, the fixing device causes the at least one cassette to advance in a direction parallel to the removal direction, wherein in particular the advance is at least 0.5 mm and in particular at least 1 mm.

[0018] An operator can easily release the locking mechanism of the fixing device by applying pressure to the at least one cassette or the at least one cleaning roller in the area of ​​the opening. If the fixing device causes a feed, this can facilitate the removal of the at least one cassette from a corresponding receptacle.

[0019] Furthermore, it is advantageous if at least one of the following is provided: the cleaning head is assigned a mounting plane for a surface to be cleaned, and the rotational axis of the at least one cleaning roller is parallel to the mounting plane; the rotational axis of the at least one cleaning roller is transverse and in particular perpendicular to a forward direction of travel of the cleaning head; the removal direction and the insertion direction are anti-parallel to one another; the rotational axis of the at least one cleaning roller and the insertion direction and / or removal direction are parallel to one another or lie at an acute angle of at most 30° to one another; a direction of pressure exerted on the at least one cassette to release the fixation on the fixing device is parallel to the rotational axis of the at least one cleaning roller or lies at an acute angle of at most 30° to the rotational axis. This results in an optimized, space-saving design.

[0020] It is advantageous if the fixing device has a first part which is assigned to the cleaning head body, and a second part which is seated on the at least one cassette, in particular with at least one of the following: the second part comprises at least one lug which is arranged on the at least one cassette and cooperates with the first part, wherein the at least one lug is detachable from the first part; the first part has at least one receptacle for holding at least one lug of the second part; the first part comprises a spring device for exerting a feed force on the at least one cassette; the first part is seated directly on the transverse wall or on an end face of a cassette holder, wherein the end face of the cassette holder faces the transverse wall.

[0021] The first part, which is assigned to the cleaning head body, is fixedly or movably mounted on the cleaning head body and is not removable from the cleaning head body. The second part is, in particular, fixedly mounted on the at least one cassette and is removable from the cleaning head together with the cassette.

[0022] In a structurally simple embodiment, the second part comprises a lug and, in particular, a plurality of lugs. These can be easily implemented on the at least one cassette. In particular, the first part of the fixing device, which is assigned to the cleaning head body, is the part that contains the essential mechanical components for fixing. This allows for a space-saving design. In particular, the space provided by the receptacle at an end region in front of the transverse wall can be used to accommodate this first part.

[0023] If the first part includes a spring device, then the cassette can be fed forward when a fixing device is released.

[0024] It is possible that the first part is located, for example, directly on the transverse wall, or in front of the transverse wall and, in one embodiment, is located on a cassette holder (which is in particular movable) and the front side of the cassette holder faces the first part of the transverse wall.

[0025] It is advantageous if the at least one cassette has a bearing side and a bearing drive side, wherein the bearing side is opposite the bearing drive side, and wherein, when at least one cassette is inserted in the holder, the bearing side is in the region of the opening of the holder and the bearing drive side is in the region of the transverse wall of the cleaning head body. An active torque coupling to effect the rotation of the at least one cleaning roller on the cassette takes place via the bearing drive side. The at least one cleaning roller is passively rotatably mounted via the bearing side. A space-saving design results if the bearing drive side is positioned in the region of the transverse wall of the cleaning head body. For example, the drive motor can be positioned in the holder, onto which the cleaning roller (which is held on the cassette) can then be placed.

[0026] It is particularly advantageous if the fixing device is arranged and configured such that the fixing of the at least one cassette takes place on the bearing drive side, and in particular, facing away from the bearing side. As a result, no elements for fixing the cassette need to be provided on the second lateral side. This results in optimized space utilization. When the cassette is arranged on the cleaning head, the bearing drive side faces the transverse wall. This makes it possible to arrange the fixing device on the cleaning head body in a space-saving manner.

[0027] In one embodiment, the at least one cleaning roller is assigned a feed device which, when the fixation of the at least one cassette is released from the transverse wall, imparts an additional feed in a direction parallel to the removal direction, wherein in particular a length of the additional feed of the feed device is at least 0.5 cm and in particular at least 1 cm and in particular at least 2 cm. This feed by the feed device can be the only feed imparted to the cassette, or can be an additional feed to the feed of the fixing device when the fixation on the fixing device is released. The feed device allows the at least one cleaning roller to be displaced in the direction of the second lateral side and in particular beyond the second lateral side.This makes removal easier for an operator, as he or she has easier access to at least one cassette.

[0028] It is advantageous if the at least one cleaning roller has a sleeve with an interior, with a filler on the sleeve, and the feed device is positioned in the interior of the sleeve. This results in a space-saving design.

[0029] In one embodiment, with at least one cassette positioned on the cleaning head, a drive shaft or the drive motor, which is located on the cleaning head, is positioned in the sleeve, and the feed device has a first part, which is arranged or supported on a drive shaft or the drive motor, and has a second part, which is located or supported on the at least one cleaning roller. Thus, upon release of the fixing device, a feed for the at least one cleaning roller can be achieved in a simple manner, which then also causes a feed for the at least one cassette due to the holding of the at least one cleaning roller on the at least one cassette.

[0030] In a structurally advantageous embodiment, a spring device is provided for the feed device, which is supported on the first part and on the second part at least when at least one cassette is fixed via the fixing device, and which is compressed when pressure is exerted on the at least one cassette in the direction of the transverse wall, wherein a spring force of the spring device causes the at least one cassette to move away from the transverse wall with the effect of additional feed. In particular, it is provided that the spring device is compressed when the cassette is fixed via the fixing device. When this fixation is released, the compressed spring device causes a feed force when it is released.

[0031] It is particularly advantageous if the at least one cassette, when fixed to the cleaning head body and the fixation is released, experiences a feed in a direction parallel to the removal direction, wherein the overall feed of the at least one cassette is adjusted such that the at least one cassette extends through the opening beyond the second lateral side. An operator then has easy access to the at least one cassette and can remove it. The feed is effected by the fixation device and / or by a feed device separate from the fixation device.

[0032] In one embodiment, a cassette holder for the at least one cassette is seated on the cleaning head body, wherein the at least one cassette is releasably seated on the cassette holder and wherein a guide device is provided, via which the at least one cassette is guided on the cassette holder in a direction parallel to the insertion direction and is held transversely to the insertion direction. A defined linear guide for the at least one cassette can be specified via the cassette holder. This easily aligns a first part and a second part of the fixing device to effect fixing when the at least one cassette is inserted. Furthermore, this easily allows a defined feed to be achieved when the fixing is released. In this case, it is fundamentally possible for the cassette holder to be integrated, for example, into a wall of a receptacle for the at least one cleaning roller.

[0033] In one embodiment, part of the fixing device is arranged on the cassette holder. This is particularly provided when the cassette holder is movable.

[0034] In one embodiment, the cassette holder is mounted so as to be movable and, in particular, pivotable relative to the cleaning head body. This allows the at least one cleaning roller to be vertically movable relative to the corresponding installation level. This allows, for example, the at least one cleaning roller to be deactivated during a cleaning process by lifting it off the surface to be cleaned. This can be advantageous, for example, if cleaning is set for a purely textile surface (floor surface) or if a floor detection sensor detects that a transition is being made from a hard floor to a textile surface. The mobility of the cassette holder can also be used, particularly if additional spring support is provided, to press the at least one cleaning roller against the surface to be cleaned in order to achieve increased contact force and thus an improved cleaning result.This also makes it possible, for example, if an area of ​​increased contamination on the surface to be cleaned is detected by a corresponding sensor on the surface cleaning device, to temporarily increase the contact pressure when driving over such an area.

[0035] It is advantageous if the receptacle is provided with a cover for closing the receptacle on the second lateral side. This provides protection for the moving mechanical parts within the receptacle (which rotates at least one cleaning roller). Furthermore, when closed, the cover prevents the locking mechanism from being accidentally released.

[0036] It is advantageous if at least one of the following is provided: the cover is spaced from the at least one cassette when the at least one cassette is positioned in the receptacle and is fixed by the fixing device; the cover is pivotally mounted on the cleaning head body; a pivot axis of the pivotability of the cover is oriented transversely and in particular perpendicularly to a mounting plane; a pivot axis of the pivotability of the cover is oriented transversely and in particular perpendicularly to the rotation axis; a pivot direction for opening the cover points away from one end of the cleaning head body.

[0037] In a structurally advantageous embodiment, the cover is pivotably mounted on the cleaning head body and is thus arranged in a captive manner.

[0038] It is also possible that the lid is removable as a whole.

[0039] In one embodiment, the cover is connected to the at least one cassette and positioned on the at least one cassette in such a way that pressure is exerted on the at least one cassette to release the fixation on a fixation device by moving the cover relative to the cleaning head body and / or to the at least one cassette. For example, a linear movement or pivoting movement of the cover relative to the cleaning head body or to the cassette can generate a compressive force parallel to the insertion direction, which in turn releases the fixation by the fixation device.

[0040] In particular, the lid is arranged to be movable in such a way that it has no movement component parallel to a direction of pressure application, in order to effectively prevent accidental release of the fixing device.

[0041] In one embodiment, a transfer mechanism is arranged on the at least one cassette and / or the cover, which transfers a movement of the cover relative to the cleaning head body or the cassette such that pressure is exerted on the at least one cassette at least approximately parallel to the direction in which the at least one cassette is inserted into the receptacle. Activated by the movement of the cover, the transfer mechanism can then act on the at least one cassette such that, in a "push-to-release" mechanism, the at least one cassette is released from the fixation by the fixation device.

[0042] In one embodiment, the drive motor for the at least one cleaning roller is positioned in the receptacle, onto which the at least one cleaning roller, which is held on the holding device of the at least one cassette, is mounted during operation of the surface cleaning device. This creates an internal drive motor for the at least one cleaning roller. The corresponding cleaning head can thus be designed in a space-saving manner. The space already available through the receptacle is also used to accommodate the drive motor.

[0043] 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.

[0044] This makes it possible to provide at least one cleaning roller that enables a wet wiping function. It is also possible for the at least one cleaning roller to have a bristle covering, or to have a combination of bristle covering and textile covering.

[0045] The surface cleaning device according to the invention can be implemented, for example, as a hand-held surface cleaning device, which in particular has a rod device and is guided by an operator standing on the surface to be cleaned. In one embodiment, the surface cleaning device is self-propelled and self-steering and is designed, in particular, as a vacuum robot or a mop robot or a vacuum-mop robot.

[0046] 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;

[0047] 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.

[0048] If at least one cleaning roller is assigned a tank device for dirty fluid, then the dirty water can be collected.

[0049] The humidification device allows a wet wiping process with improved dirt removal function.

[0050] The scraper device allows dirty fluid to be effectively removed from at least one cleaning roller and fed to a tank device for dirty fluid.

[0051] 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.

[0052] This allows a suction process to be carried out.

[0053] According to the invention, a method is provided in which a compressive force is exerted on the at least one cassette, when positioned in the receptacle and secured to the cleaning head via the securing device, in the direction of the transverse wall, thereby releasing the securing via the securing device. The method according to the invention has already been explained in the context of the surface cleaning device according to the invention.

[0054] It is advantageous if, in addition to releasing the fixation of at least one cassette, a feed in a direction parallel to the removal direction is also provided via the fixing device. This provides improved access for an operator, who can then more easily remove the cassette from the cleaning head.

[0055] The following description of preferred embodiments, taken in conjunction with the drawings, serves to further explain the invention. They show:

[0056] 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);

[0057] Figure 2 shows a bottom view of the surface cleaning device according to

[0058] Figure 1 in the direction A according to Figure 1;

[0059] Figure 3 shows a further perspective view of the surface cleaning device according to Figure 1 with the housing parts removed;

[0060] Figure 4 shows a partial view of the surface cleaning device according to

[0061] Figure 1 in area B according to Figure 1, wherein a receptacle for a cleaning roller is closed;

[0062] Figure 5 is the same view as Figure 4, with a cover on the receptacle open; Figure 6 is the same view as Figure 5, with a cassette with a cleaning roller half-removed and half-inserted;

[0063] 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;

[0064] Figure 8 shows a further view of the cassette with cleaning roller according to Figure 7;

[0065] Figure 9 shows the cassette according to Figure 7, with the flap open;

[0066] 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);

[0067] 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);

[0068] Figure 12 is a schematic sectional view of the cassette with

[0069] Cleaning roller with closed flap (corresponding to the view in Figure 10);

[0070] Figure 13 is a schematic sectional view of the cassette with

[0071] Cleaning roller with the flap open (according to Figure 11);

[0072] Figure 14 is a similar view of the cassette as in Figure 8 with the cleaning roller removed; Figure 15 is a further view of the cassette according to Figure 14 without the cleaning roller;

[0073] Figure 16 is a sectional view of the surface cleaning device in the

[0074] Level E according to Figure 4 or 5;

[0075] Figure 17 shows a detailed view of a sectional view of a

[0076] Cassette with retained cleaning roller;

[0077] Figure 18 is a partial sectional view of the surface cleaning device in plane F according to Figure 5;

[0078] Figure 19 is a partial sectional view of another embodiment of a surface cleaning device;

[0079] Figure 20 is a perspective view of a cassette holder with a cassette held thereon, the cassette in turn holding a cleaning roller;

[0080] Figure 21 shows another view of the cassette holder (without

[0081] cassette and cleaning roller);

[0082] Figure 22 shows another view of the cassette holder according to Figure

[0083] 20 (without cassette and cleaning roller);

[0084] Figure 23 a sectional view of the surface cleaning device in

[0085] Area 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;

[0086] Figure 24 shows a further sectional view with the cleaning roller raised relative to a surface to be cleaned; Figure 25 shows a detailed view of the area G according to Figure 3 with a pulley element;

[0087] Figure 26(a) is a detailed view of an embodiment of a

[0088] Surface cleaning device in which a holder for the cleaning roller is closed;

[0089] Figure 26(b) is the same view as Figure 26(a) with the cover removed;

[0090] Figure 27 shows a further embodiment of a cassette with a lid arranged thereon;

[0091] Figure 28(a) and (b) detail views of a cover on a receptacle in a further embodiment; and

[0092] Figure 29(a) and (b) further detailed views of another embodiment of a surface cleaning device in the region of a receptacle.

[0093] 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-mop robot suitable for cleaning textile and hard floors.

[0094] The surface cleaning device 10 comprises a cleaning head 12, which includes a self-propelled and self-steering cleaning head body 14 (carriage body). 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).

[0095] 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).

[0096] 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.

[0097] 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 rotational axis. It is pivotable about a steering axis that is perpendicular to this rotational 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 rotational axis and in a pivoting movement about the steering axis). A change in direction of the cleaning head 12 occurs by appropriately controlling 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.

[0098] 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.

[0099] The surface cleaning device 10 has a main direction of travel 26. This

[0100] The 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.

[0101] 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.

[0102] 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.

[0103] 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 embodiment, it can also be provided that only the cleaning roller 32 acts on the surface 16 to be cleaned.)

[0104] 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.

[0105] 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.

[0106] 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).

[0107] 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.

[0108] 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).

[0109] 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.

[0110] 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.

[0111] On the underside of the cleaning head body 14 there are 46 cliff sensors

[0112] 52 (see Figure 2) are arranged, which are connected to the control device 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 receptacle 58 for emptying and cleaning. 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.

[0118] 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.

[0119] 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.

[0120] 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.

[0121] 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 extend beyond a circumference of the cleaning head body 14. 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 at 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.

[0125] 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.

[0126] 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 the other side. In particular, a center plane of the cleaning head body 14 lies between the blower device 62 and the drive motor 68, on which the longitudinal axis 40 lies and which is perpendicular to the installation plane 28.

[0127] In one embodiment, the blower device 62 is located on one side of the receptacle 58, wherein a fluid-effective connection of the dirt collection container is 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. 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 arranged, in particular, mirror-symmetrically to the center plane on the longitudinal axis 40.

[0129] The first lateral side 80 and the second lateral side 82 may be flat or curved.

[0130] 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.

[0131] The receptacle 84 is positioned at the rear portion 54 of the cleaning head body 14. It is spaced from the rear end 38 of the cleaning head body 14.

[0132] 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.

[0133] 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.

[0134] 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. A cassette 92 is provided for positioning the cleaning roller 32 in the receptacle 84 (see Figures 7 to 24). The cassette 92 comprises 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 driven to rotate about a rotation axis 96 by the holding device 94.

[0135] 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.

[0136] 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.

[0137] 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.

[0138] 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. 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.

[0139] 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.

[0140] 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.

[0141] The peripheral wall 106 has a first region 118 and a second region 120.

[0142] The second region 120 is movably arranged on the first region 118.

[0143] 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 at 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.

[0144] 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°. This allows the cleaning roller 32 to be positioned in the first region 118 without jamming.

[0145] 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.

[0146] 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.

[0147] The second part 104 of the guide device 100 is located on the outer side 134.

[0148] 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 retention with respect to directions transverse to the axis 108 or transverse to the rotation axis 96 of the cleaning roller 32.

[0149] 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 on the first region 118. Via the connection 138, a fluid-effective connection is established to that part of the humidification device 140 which is positioned on the cleaning head 14 outside the cassette 92.

[0150] 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.

[0151] 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.

[0152] In one embodiment, the pivot bearing assembly 156 includes a plurality of spaced pivot bearings 150 aligned along the pivot axis 148.

[0153] In the embodiment shown (see Figure 7), three pivot bearings 150 are provided.

[0154] In one embodiment, a pivot bearing 150 comprises shaft elements 152, which are arranged on the first region 118, and receptacles 154 for one shaft element each, which are arranged on the second region 120 and are formed, for example, in one piece.

[0155] The second region 120 is designed as a flap 144. A spring device 156 is associated with the pivot bearing device 146, with a spring force of the spring device 156 tending to press the flap 144 against the cleaning roller 32 and thereby clamp it to the holding device 94.

[0156] 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.

[0157] 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.

[0158] 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.

[0159] In the closed position 158 of the flap 144, the second end 162 faces the installation plane 28 (see, for example, Figure 10).

[0160] 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 12).

[0161] 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.

[0162] This positive locking can be released by moving the flap 144 away (Figures 9, 11, 13). A scraper device 166 for the cleaning roller 32 is arranged on the flap.

[0163] The cleaning roller 32 is designed, in particular, as a wiping roller or wet cleaning roller. It has a sleeve 168 (see Figure 13), which in particular has an open interior 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.

[0164] 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.

[0165] 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.

[0166] 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.

[0167] 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.

[0168] 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.

[0169] 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).

[0170] The scraper bar 176 is arranged and designed such that it leads to the mouth device 174 in a funnel shape.

[0171] 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.

[0172] 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.

[0173] 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).

[0174] 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.

[0175] 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.

[0176] 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.

[0177] 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.

[0178] The insertion direction 184 is at least approximately parallel to the rotation axis 96.

[0179] The combination of cassette 92 with cleaning roller 32 fixed to it is inserted into the holder 84.

[0180] To remove the cassette 92 with the cleaning roller 32, the cover 90 is opened and the axial fixation is then released. This is described in more detail below.

[0181] 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.

[0182] A removal direction 186 (Figure 5) is opposite to the insertion direction 184 and antiparallel to it.

[0183] The removal takes place at the opening 88 facing away from the transverse wall 86.

[0184] The cleaning roller 32 can then be removed from the cassette 92 and cleaned, for example, in a washing machine. When the cassette 92 with the cleaning roller 32 is inserted in the insertion direction 184 until axial fixation is achieved, an automatic fluid-effective connection of the connection 138 on the cassette to 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.

[0185] 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 mouth device 174 is automatically uncoupled from the fluid-effective coupling to the tank device 42.

[0186] 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 is located on this bearing drive side 190. The bearing drive side 190 couples the cleaning roller 32 to a drive motor for rotation about the rotation axis 96.

[0187] 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.

[0188] 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 with respect to the insertion direction 184 and the removal direction 186. The guide device 100 fixes it in all transverse directions thereto. The fixing device 192 has a first part 194, which is arranged outside the cassette 92 and is assigned to 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, in particular 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.

[0189] 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).

[0190] In an alternative embodiment, in particular when the cassette holder 98 is fixed (immovably) 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 thereby on an inner side towards the receptacle 84.

[0191] A second part 196 of the fixing device 192, which corresponds to the first part 194, is arranged on the cassette 92.

[0192] 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.

[0193] 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.

[0194] 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.

[0195] 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.

[0196] There is a connection to the control device via control lines and an electrical connection to the battery device 70.

[0197] 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 therewith.

[0198] 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.

[0199] 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.

[0200] A motor driver 202 is provided, which is positioned in the interior 170 of the sleeve 168 when the cleaning roller 32 is placed on the drive motor 200. The motor driver 202 is rotationally fixedly coupled to the cleaning roller 32. In a variant of an embodiment (Figure 19), a drive motor 204 is provided, which is located externally with respect to the sleeve 168 of the cleaning roller 32. A driver 206 is rotationally fixedly coupled to the drive motor 204 and projects into the sleeve 168 of the corresponding cleaning roller 32.

[0201] 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.

[0202] 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.

[0203] 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. Snap-action devices are known per se and are used, for example, in furniture construction.

[0204] 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.

[0205] It can be provided that a spring device is arranged on the housing 210, which, when the connection of the cassette 92 is released, provides a feed and, in a sense, "ejects" it.

[0206] The snap-action device 208 can be formed 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.

[0207] 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.

[0208] 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.

[0209] 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.

[0210] In one embodiment, the cover 90 is fixedly (captively) connected to the cleaning head body 14. A corresponding hinge 214 with a pivot axis 216 is provided for this purpose. 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.

[0211] In particular, the cover is arranged laterally via the hinge 214 and is arranged, for example, on the side on which the cassette holder 98 is also oriented on the cleaning head body 14.

[0212] When the cover 90 is opened (Figures 5, 6), the cover 90 is pivoted from the rear end 38 to the front end 36.

[0213] The hinge 214 is, for example, spring-loaded to ensure good closure of the opening 88 on the second lateral side 82.

[0214] In particular, it is provided that when the cover 90 is closed (Figure 4), the cover 90 is spaced apart from the cassette 92 and thereby from the second end face 112, so that no compressive force (which could trigger the "push-to-release" mechanism of the fixing device 192) acts on the cassette 92. To fix the cassette 92 (with the cleaning roller 32) to the receptacle 84, with the cover 90 open, the cassette 92 is moved into the receptacle 94 in the insertion direction 184. The cassette 92 is aligned such that the first part 102 and the second part 104 of the guide device 100 engage with one another.

[0215] 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.

[0216] This can be indicated acoustically, for example, by a clicking sound.

[0217] 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.

[0218] 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.

[0219] 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.

[0220] 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.

[0221] This feed is in particular at least 0.5 cm and preferably at least 1 cm and in particular at least 2 cm.

[0222] 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.

[0223] In particular, it is 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.

[0224] 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.

[0225] As an alternative to a pivotable cover 90, it is also possible to provide a cover 222 (Figure 26(a)) that is completely removable 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. In a further embodiment (Figures 27 to 29(b)), a cover 224 is fixedly arranged on the cassette 92.

[0226] The cover 224 is arranged and configured 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 with the cover 224 to be released.

[0227] 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. A linear movement of the cover 226 (Figure 29(b)) then generates a compressive force parallel to the insertion direction 184 via a transfer mechanism, which in turn leads to a release of the fixation on the fixing device 192 and, if necessary, a feed in the removal direction 186.

[0228] The cassette 92 with cover 224 or 226 can be removed.

[0229] 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.

[0230] In one embodiment, the cassette holder 98 is positioned separately from the receiving wall 228 and movably within the receptacle 84. A pivot bearing device 230 is provided, by which the

[0231] Cassette holder 98 is pivotally mounted on the cleaning head 14.

[0232] 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.

[0233] The pivot axis 232 is parallel to the installation plane 28.

[0234] The cassette holder 98 has a wall 234 (see Figures 21, 23), wherein the first part 102 of the guide device 100 is formed on an inner side of the wall 234.

[0235] 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.

[0236] 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.

[0237] 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.

[0238] In one embodiment (see Figure 21), the webs 242 are bow-shaped. The pivot bearing device 230 is formed by the webs 242, and this is the part that sits on the cassette holder 98.

[0239] This part cooperates with another part located on the cleaning head body 14. The receiving wall 228 has openings 244 that cooperate with the webs 242. A web 242 (or a combination of webs in 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.

[0240] 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.

[0241] The counterpart 246 of the pivot bearing device 230 is located 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 level 28 is determined by the wheels 20 and the support roller 24.

[0251] 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. In the inventive solution with a movable cassette holder 98, the cleaning roller 32 is generally only located on the installation 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 downwards beyond the installation plane until an end 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 provides space-saving access.

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

[0257] 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.

[0258] The motor 260 is positioned in particular near the blower device 62.

[0259] 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 holds this position 252. It is specifically provided that the position 252 is also maintained when the motor 260 is not operating (not supplied with electrical power). 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 the lifting direction, and the spring device 248 then causes the lowering.

[0264] In one embodiment, the cable pulling device 254 comprises a pulley element 268. The pulley element 268 is arranged, for example, on the first region 262 of the pull rope 256.

[0265] 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 pull cable 274 is firmly connected at one end 278 (possibly using a spring device) to the cleaning head body 14 and, for example, to the rear portion 54. At another end 280, this first pull cable 274 is connected to the motor 260. (The motor 260 is indicated in Figure 25, but its actual position is shown in Figure 3.)

[0271] Loop 276 lies between ends 278 and 280.

[0272] 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.

[0273] 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.

[0274] The pulley element 268 allows the necessary motor power to be halved, resulting in a doubling of the travel distance.

[0275] 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.

[0276] 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.

[0277] 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.

[0278] The surface cleaning device 10 according to the invention functions as follows:

[0279] 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.

[0280] The flap 144 holds the cleaning roller 32 to the cassette 92.

[0281] 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 facing 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. This creates a floating bearing. The contact pressure can be increased to improve the cleaning effect.

[0288] 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).

[0289] 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.

[0290] 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 lid 90. By exerting pressure on 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. In addition to releasing the fixing of a fixing device 192, a feed action occurs, which can be amplified by the feed device 212. In particular, the cassette 92 with the cleaning roller 32 is then pushed slightly out of the opening 88 to enable easier removal.

[0291] An operator can then remove the cassette 92 with the dirty cleaning roller (see, for example, Figure 7). By folding up the

[0292] Using flap 144, he can remove the cleaning roller 32 from the cassette 92.

[0293] List of reference symbols

[0294] Surface cleaning device

[0295] cleaning head

[0296] Cleaning head body

[0297] Area (ground)

[0298] Drive

[0299] Wheels a First wheel b Second wheel

[0300] wheel axle

[0301] Support roller

[0302] Main direction of travel (forward direction)

[0303] Installation level

[0304] Brush roller

[0305] cleaning roller

[0306] Navigation device

[0307] Front end

[0308] Rear end

[0309] Longitudinal axis

[0310] Tank facility for dirty fluid

[0311] Tank facility for cleaning fluid

[0312] bottom

[0313] Top

[0314] Impact body

[0315] Cliff sensor

[0316] Rear area

[0317] Front area

[0318] Recording

[0319] Connection

[0320] Blower device

[0321] Recording area rotation axis

[0322] drive motor

[0323] Battery setup

[0324] Contact elementa side brush b side brush

[0325] drive motor

[0326] Lid

[0327] First lateral page

[0328] Second lateral side

[0329] Recording

[0330] Transverse wall

[0331] opening

[0332] Lid

[0333] cassette

[0334] Holding device

[0335] rotation axis

[0336] 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

[0337] Humidification device Nozzle device Flap

[0338] Pivot bearing device Pivot axis Pivot bearing Shaft element Receptacle Spring device Closed position First end Second end Angular range

[0339] Stripper device sleeve

[0340] Interior trimmings outlet device scraper bar "penetration" edge flange pivot bearing insertion direction removal direction bearing side

[0341] Bearing drive side Fixing device First part Second part

[0342] Nose

[0343] drive motor

[0344] Motor driver

[0345] drive motor

[0346] Driver

[0347] Snap-in device housing

[0348] Feed device hinge

[0349] Swivel axis

[0350] Feed device spring device cover

[0351] Lid

[0352] Lid

[0353] Receiving wall swivel bearing device swivel axis

[0354] wall

[0355] transverse area

[0356] holder

[0357] outside

[0358] web

[0359] opening

[0360] Counterpart spring device lifting device position

[0361] Cable pull device pull rope

[0362] Fastening element engine, gearbox first area

[0363] Second area

[0364] Third area

[0365] Pulley element

[0366] Displacement element

[0367] Direction of displacement

[0368] First pull rope

[0369] loop

[0370] End

[0371] End

[0372] Second pull rope

[0373] End

[0374] Spring device

[0375] End

Claims

Patent claims 1. A 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 (92), a drive motor (200) for the at least one cleaning roller (32), 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 body (14), a receptacle (84) for the at least one cassette (92), which is arranged on the cleaning head body (14) and which is closed towards a first lateral side (80) of the cleaning head body (14) by a transverse wall (86) and is open towards a second lateral side (82) of the cleaning head body (14) opposite the first lateral side (80) through an opening (88),wherein the at least one cassette (92) on the second lateral side (82) at the opening (88) is removable from the cleaning head body (14) in a removal direction (186) and is insertable onto the cleaning head body (14) in an insertion direction (184), characterized by a fixing device (192) by means of which the at least one cassette (92) is fixable to the cleaning head body (14) in the region of the transverse wall (86) relative to the removal direction (186) and the insertion direction (184).

2. Surface cleaning device according to claim 1, characterized in that the fixing device (192) is designed as a pressure snap device (208), in which a connection of the at least one cassette (92) to the cleaning head body (14) can be released by exerting pressure in a direction parallel to the insertion direction (184).

3. Surface cleaning device according to claim 2, characterized in that the fixing device (192) is designed such that when at least one cassette (92) is positioned on the cleaning head (12) in the receptacle (84) and fixed via the fixing device (192), the fixing to the fixing device (192) is released by exerting pressure on the at least one cassette (92) in a direction parallel to the insertion direction (184).

4. Surface cleaning device according to claim 3, characterized by at least one of the following: - the fixation can be released by exerting pressure on the at least one cassette (92) in the region of the opening (88) of the receptacle (84); - when the fixing is released, the fixing device (192) causes the at least one cassette (92) to advance in a direction parallel to the removal direction (186), wherein in particular the advance is at least 0.5 mm and in particular at least 1 mm.

5. Surface cleaning device according to one of the preceding claims, characterized by at least one of the following: - the cleaning head (12) is assigned a mounting plane (28) for a surface (16) to be cleaned and the rotation axis (96) of the at least one cleaning roller (32) is parallel to the mounting plane (28); - the axis of rotation (96) of the at least one cleaning roller (32) lies transversely and in particular perpendicular to a forward travel direction (26) of the cleaning head (12); - the removal direction (186) and the insertion direction (184) are antiparallel to each other; - the rotation axis (96) of the at least one cleaning roller (32) and the insertion direction (184) and / or removal direction (186) are parallel to one another or lie at an acute angle of at most 30° to one another; - a direction of pressure exerted on the at least one cassette (92) to release the fixation on the fixing device (192) is parallel to the rotation axis (32) of the at least one cleaning roller (32) or lies at an acute angle of at most 30° to the rotation axis.

6. Surface cleaning device according to one of the preceding claims, characterized in that the fixing device (192) has a first part (194) which is assigned to the cleaning head body (14) and a second part (196) which is seated on the at least one cassette (92), in particular with at least one of the following: - the second part (196) comprises at least one lug (198) which is arranged on the at least one cassette (92) and cooperates with the first part (194), wherein the at least one lug (198) is detachable from the first part (194); - the first part (194) has at least one receptacle for holding at least one lug (198) of the second part (196); - the first part (194) comprises a spring device for exerting a feed force on the at least one cassette (92); - the first part (194) is seated directly on the transverse wall (86) or on an end face of a cassette holder (98), the end face of the cassette holder (98) facing the transverse wall (86).

7. Surface cleaning device according to one of the preceding claims, characterized in that the at least one cassette (92) has a bearing side (188) and a bearing drive side (190), wherein the bearing side (188) is opposite the bearing drive side (190), and wherein when at least one cassette (92) is inserted in the receptacle (84), the bearing side (188) lies in the region of the opening (88) of the receptacle (84) and the bearing drive side (190) lies in the region of the transverse wall (86) of the cleaning head body (14).

8. Surface cleaning device according to claim 7, characterized in that the fixing device (192) is arranged and designed such that the fixing of the at least one cassette (92) takes place on the bearing drive side (190) and in particular takes place facing away from the bearing side (188).

9. Surface cleaning device according to one of the preceding claims, characterized in that the at least one cleaning roller (32) is assigned a feed device (218) which, when the fixation of the at least one cassette (92) away from the transverse wall (86) is released, imparts an additional feed in a direction parallel to the removal direction (186), wherein in particular a length of the additional feed of the feed device (218) is at least 0.5 cm and in particular at least 1 cm and in particular at least 2 cm.

10. Surface cleaning device according to claim 9, characterized in that the at least one cleaning roller (32) has a sleeve (168) with an interior space (170), wherein a trim (172) is seated on the sleeve (168), and that the feed device (218) is positioned in the interior space (170) of the sleeve (168).

11. Surface cleaning device according to claim 10, characterized in that when at least one cassette (92) is positioned on the cleaning head (12), a drive shaft or the drive motor (200) which is seated on the cleaning head (12) is positioned in the sleeve (168), and in that the feed device (218) has a first part which is arranged or supported on the drive shaft or the drive motor, and a second part which is seated or supported on the at least one cleaning roller (32).

12. Surface cleaning device according to claim 11, characterized in that the feed device (218) has a spring device (220) which is supported on the first part and the second part at least when at least one cassette (92) is fixed via the fixing device (192), and which is compressed when pressure is exerted on the at least one cassette (92) in the direction of the transverse wall (86), wherein a spring force of the spring device (220) causes the at least one cassette (92) to move away from the transverse wall (86) with the effect of the additional feed.

13. Surface cleaning device according to one of the preceding claims, characterized in that the at least one cassette (92), when it is fixed to the cleaning head body (14) and the fixation is released, experiences a feed in a direction parallel to the removal direction (186), and that a total feed of the at least one cassette (92) is set such that the at least one cassette (92) dips through the opening (88) beyond the second lateral side (82).

14. Surface cleaning device according to one of the preceding claims, characterized in that a cassette holder (98) for the at least one cassette (92) is positioned on the cleaning head body (14), wherein the at least one cassette (92) is detachably seated on the cassette holder (98) and wherein a guide device (100) is provided, via which the at least one cassette (92) is guided on the cassette holder (98) in a direction parallel to the insertion direction (184) and is held transversely to the insertion direction (184).

15. Surface cleaning device according to claim 14, characterized in that a part (102) of the fixing device (100) is seated on the cassette holder (98).

16. Surface cleaning device according to claim 14 or 15, characterized in that the cassette holder (98) is mounted movable and in particular pivotable relative to the cleaning head body (14).

17. Surface cleaning device according to one of the preceding claims, characterized in that the receptacle (84) is assigned a cover (90; 222; 224; 226) for closing the receptacle (84) on the second lateral side (82).

18. Surface cleaning device according to claim 17, characterized by at least one of the following: - the cover (90) is spaced from the at least one cassette (92) when the at least one cassette (92) is positioned in the receptacle (84) and is fixed by the fixing device (100); - the cover (90) is pivotally mounted on the cleaning head body (14); - a pivot axis (216) of the pivotability of the lid (90) is oriented transversely and in particular perpendicularly to a mounting plane (28); - a pivot axis (216) of the pivotability of the cover (90) is oriented transversely and in particular perpendicularly to the rotation axis (96); - a pivoting direction for opening the cover (90) points away from one end (38) of the cleaning head body (14).

19. Surface cleaning device according to claim 17 or 18, characterized in that the cover (222) is removable as a whole.

20. Surface cleaning device according to claim 17, characterized in that the cover (224; 226) is connected to the at least one cassette (92) and is seated on the at least one cassette (92) in such a way that pressure is exerted on the at least one cassette (92) to release the fixation on the fixing device (192) by movement of the cover (224; 226) relative to the cleaning head body (14).

21. Surface cleaning device according to claim 20, characterized in that the cover (224; 226) is arranged to be movable such that it has no movement components parallel to a direction of pressure application.

22. Surface cleaning device according to claim 20 or 21, characterized in that a conversion mechanism is arranged on the at least one cassette (92) and / or the cover (224; 226), which converts a movement of the cover (224; 226) relative to the cleaning head body (14) such that pressure is exerted on the at least one cassette (92) at least approximately parallel to the direction of insertion (184) of the at least one cassette (92) into the receptacle (84).

23. 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 the receptacle (84), on which the at least one cleaning roller (32), which is held on the holding device (94) of the at least one cassette (92), is placed during operation of the surface cleaning device.

24. 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.

25. 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.

26. 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 (14); - 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 (16) for scraping dirt fluid from the at least one cleaning roller (32).

27. 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 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).

28. Method for removing the at least one cassette (92) from the surface cleaning device according to one of the preceding claims, in which a compressive force is exerted on the at least one cassette (92) in the direction of the transverse wall (86) when it is positioned in the receptacle (84) and is fixed to the cleaning head body (14) via the fixing device (192), and the fixing via the fixing device (192) is thereby released.

29. Method according to claim 28, characterized in that in addition to releasing the fixation of the at least one cassette (92), a feed in a direction parallel to the removal direction (186) is given via the fixation device (192). * * *

Images