Surface cleaning device comprising a holding device and method for operating a surface cleaning device

Abstract

The invention relates to a surface cleaning device, comprising a cleaning head (12), at least one cleaning roller (32) which can be rotated about an axis of rotation (96), a drive motor (200) for the at least one cleaning roller (32), and a holding device (94) on which the at least one cleaning roller (32) is rotatably mounted and which holds the at least one cleaning roller (32) on the cleaning head (12), characterised in that the holding device (94) has at least one pivotable flap (144) which is assigned a spring device (156), wherein the at least one cleaning roller (32) is held in a clamping manner on the holding device (94) by the at least one flap (144), and in that a wiper device (166) for wiping dirty fluid from the at least one cleaning roller (32) is seated on the at least one flap (144).

Description

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

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

[0003] The invention further relates to a method for operating a surface cleaning device which comprises a cleaning head, at least one cleaning roller rotatable about a rotation axis, a drive motor for the at least one cleaning roller and a holding device for the at least one cleaning roller.

[0004] 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.

[0005] The invention is based on the object of providing a surface cleaning device of the type mentioned above, in which the at least one cleaning roller can be inserted or removed in a simple manner.

[0006] This object is achieved according to the invention in the surface cleaning device mentioned at the outset in that the holding device has at least one pivotable flap to which a spring device is assigned, wherein the at least one cleaning roller is held clamped on the holding device by the at least one flap, and in that a wiper device for wiping dirty fluid from the at least one cleaning roller is located on the at least one flap.

[0007] The at least one flap allows the at least one cleaning roller to be held to the holding device (when at least one flap is closed) via a positive fit and the clamping force exerted by the at least one flap on the at least one cassette. The rotatability of the at least one cleaning roller around the rotation axis is ensured.

[0008] By opening the flap (against the force of the spring device) at least one cleaning roller can be easily removed.

[0009] This makes it easy to replace the rollers on the holding device.

[0010] The at least one flap has a function before and after operation of the surface cleaning device for removing and inserting the at least one cleaning roller onto the holding device. During operation of the surface cleaning device, it holds the at least one cleaning roller onto the holding device, which holding device is then in turn held onto the cleaning head. By integrating the at least one wiper device into the at least one flap, dirty fluid can be effectively removed from the at least one cleaning roller even during operation of the surface cleaning device. Due to the spring loading of the at least one flap, the wiper device is also spring-loaded and is pressed against a facing and in particular into the facing of the at least one cleaning roller. This results in effective dirt removal.

[0011] The spring-loaded scraper device also allows for manufacturing tolerances and wear on the at least one cleaning roller. This results in an optimized cleaning result with the at least one cleaning roller over its entire service life, even if its diameter decreases due to wear.

[0012] It is advantageous if at least one of the following is provided: a clamping force exerted by the at least one flap on the at least one cleaning roller is oriented transversely and in particular perpendicularly to the rotational axis of the at least one cleaning roller; a clamping force exerted by the at least one flap on the at least one cleaning roller acts in the direction of a partial region of a peripheral wall of the holding device.

[0013] The at least one flap, in particular, ensures a positive locking of the at least one cleaning roller to the holding device along its circumference. The flap exerts an additional clamping force, which in turn ensures optimized positioning of the wiper device on the at least one cleaning roller. By removing the clamping force, the flap can be opened when the cleaning head is in the holding device, and the at least one cleaning roller can be easily removed from the holding device.

[0014] If the clamping force acts in the direction of a mounting plane of the cleaning head for a surface to be cleaned, the cleaning head is designed to be advantageous.

[0015] Furthermore, it is advantageous if a pivot axis of a pivot bearing device of the at least one flap is oriented parallel to or at an acute angle of no more than 30° to the rotation axis of the at least one cleaning roller. This results in a space-saving design. This results in optimized mounting of the at least one cleaning roller on the holding device.

[0016] It is advantageous if at least one of the following is provided: the cleaning head is assigned a mounting plane to a surface to be cleaned, wherein the rotation axis of the at least one rotating roller is oriented parallel to the mounting plane; the rotation axis of the at least one cleaning roller is oriented transversely and in particular perpendicularly to a forward travel direction of the cleaning head.

[0017] This allows for effective surface cleaning, especially with a cleaning robot.

[0018] In one embodiment, the holding device has a peripheral wall for the at least one cleaning roller, which covers a partial area of ​​a circumference of the at least one cleaning roller. This allows a type of dirt protection wall to be provided. The peripheral wall can itself hold structural elements of the cleaning head, such as a nozzle device and a connection of a moistening device for supplying cleaning fluid to the at least one cleaning roller. By covering a partial area, an optimized hold of the at least one cleaning roller on the holding device can be achieved.

[0019] It is furthermore advantageous if at least one of the following is provided: the circumferential wall has a first region on which a second region is seated, wherein the second region is formed by the at least one flap; the circumferential wall is closed and / or continuous; the circumferential wall has a first circumferential extent when the at least one flap is open, wherein the first circumferential extent has an angular range of less than 180° and in particular less than 150°, and wherein in particular the first circumferential extent is formed by means of a first region of the circumferential wall;the circumferential wall has a second circumferential extension when at least one flap is closed, wherein the at least one closed flap exerts the clamping force on the at least one cleaning roller, and the second circumferential extension has an angular range of greater than 180°, wherein the second circumferential extension is formed in particular by a first region and a second region of the circumferential wall together;

[0020] The peripheral wall has the first region and the second region, the second region being formed by the at least one flap. When the at least one flap is closed, a "unitary" peripheral wall is formed for holding the at least one cleaning roller with the first region and the second region.

[0021] If the peripheral wall is closed or continuous, structural elements can be optimally positioned along it. Furthermore, a dirt protection wall is also provided.

[0022] If the peripheral wall has a first circumferential extension with the flap open, which covers an angular range of less than 180°, then the at least one cleaning roller can be easily inserted into the holding device. If the peripheral wall has a second circumferential extension with at least one flap closed, which is greater than 180°, then the cleaning roller, which is circular in cross-section, is overlapped by the peripheral wall, resulting in a positive locking fixation. This is further supported by the clamping force of the at least one flap. This results in a secure hold on the holding device, wherein the cleaning roller can be easily inserted or removed when at least one flap is open.

[0023] In particular, the cleaning head is assigned a mounting plane for a surface to be cleaned, and the mounting plane is assigned a vertical axis oriented perpendicular to the mounting plane. The holding device has an upper region at which the holding device is at a maximum distance from the mounting plane in the vertical axis. A pivot bearing device for the at least one flap is positioned in the upper region facing away from the mounting plane. This results in optimal accommodation of the pivot bearing device on the cleaning head. The pivot bearing device can be arranged in a space-saving manner. Furthermore, a "circumferential clamping" of the at least one cleaning roller on the holding device can be easily achieved via the at least one flap.It is further advantageous if a first circumferential extension of a circumferential wall of the holding device extends from an underside of the circumferential wall, which faces the installation plane, to a pivot bearing device. When the flap is open, the first circumferential extension is present, and the at least one cleaning roller can be easily inserted into or removed from the circumferential wall.

[0024] If a second circumferential extension of a circumferential wall of the holding device extends from the pivot bearing device to a front end of the at least one flap, wherein the front end faces the installation plane when at least one flap is closed and exerts a clamping force on the at least one cleaning roller, then a "circumferential clamping" of the at least one cleaning roller on the holding device can be achieved in a simple manner.

[0025] If the pivot axis of the pivot bearing device is located above the rotation axis with respect to the height axis and the pivot axis and the rotation axis intersect the same height axis or are offset from each other by no more than 3 cm in a transverse direction, then a space-optimized arrangement of the pivot bearing device results.

[0026] In one embodiment, exactly one flap is provided, which is in particular assigned to a pivot bearing device with a plurality of spaced-apart pivot bearings. This allows for reliable opening and closing of the at least one flap with a structurally simple design of the holding device, enabling a low-maintenance implementation.

[0027] It is particularly advantageous if an outlet device for discharging the stripped contaminated fluid and coupling the stripped contaminated fluid into a tank device for the contaminated fluid is arranged on the at least one flap. This allows the stripped contaminated fluid to be coupled into the tank device via the flap while minimizing the transport path.

[0028] In one embodiment, the at least one flap has a first end and an opposite second end, and the wiper device has at least one wiper strip, which can be inserted into a facing of the at least one cleaning roller and which is positioned between the first end and the second end on the at least one flap, and is in particular spaced apart from a first end and spaced apart from the second end. This results in an optimized "circumferential clamping" function of the at least one flap, and also in an optimized positioning of the at least one wiper strip for wiping contaminating fluid from the at least one cleaning roller.

[0029] It is advantageous if an outlet device for discharging dirty fluid from the at least one cleaning roller is positioned on the at least one wiper bar. In particular, the outlet device and the at least one wiper bar share a common edge. This allows for the effective discharge of dirty fluid and its coupling into the dirty fluid tank device.

[0030] For the same reason, it is advantageous if the mouth device is positioned between the first end face and the second end face and, in particular, is spaced apart from the first end face and spaced apart from the second end face.

[0031] In a structurally advantageous embodiment, at least one guide element for guiding and securing the holding device to the cleaning head is arranged on an outer side of a peripheral wall of the holding device, facing away from the at least one cleaning roller. The peripheral wall is then used to hold structural elements themselves. This results in a compact design and reduces the number of required components.

[0032] In one embodiment, the at least one cleaning roller is positioned between the at least one guide element and a tank device for the dirty fluid. This results in a space-saving, compact design.

[0033] It is advantageous if, relative to a circumferential direction of the at least one cleaning roller, the at least one guide element is positioned at an angle between 70° and 110°, and in particular 90°, relative to a pivot bearing device for the at least one flap. This results in a space-saving arrangement.

[0034] It is particularly advantageous if the holding device is a cassette or part of a cassette that is removably positioned on the cleaning head and, in particular, can be removed from a receptacle on the cleaning head in a removal direction at least approximately parallel to the rotational axis of the at least one cleaning roller and can be inserted into the receptacle on the cleaning head in a direction opposite to the removal direction. This allows for a simple roller replacement on the cleaning head.

[0035] In one embodiment, a pivot bearing for the at least one cleaning roller is positioned on the holding device. This results in a rotatable mounting of the at least one cleaning roller on the holding device.

[0036] In one embodiment, an edge flange is arranged on the front side of the holding device, which provides an axial contact surface for the at least one cleaning roller. This provides axial securing for the at least one cleaning roller on the holding device, particularly opposite a pivot bearing. At the corresponding end of the holding device, the edge flange prevents the at least one cleaning roller from "falling out." Furthermore, structural elements such as lugs of a fixing device can be arranged on the edge flange. The edge flange can be positioned on the at least one flap or on a peripheral wall of the holding device.

[0037] It is particularly advantageous if the edge flange is positioned on the holding device facing away from a pivot bearing. The pivot bearing itself provides an axial contact surface. The edge flange then also provides an axial contact surface in the opposite direction.

[0038] Furthermore, it is advantageous if a connection for a humidification device for cleaning fluid is arranged on the holding device on or in the area of ​​the edge flange. This automatically creates a fluid-effective connection with the remaining part of the humidification device on the cleaning head, especially when the holding device is positioned on the cleaning head.

[0039] Furthermore, it is advantageous if parts of a fixing device for fixing the holding device in a receptacle of the cleaning head relative to an insertion direction and a removal direction are arranged on the edge flange, and in particular at least one lug of the fixing device is arranged. This results in a structurally simple design. A snap-action device can be implemented in a simple manner.

[0040] In one embodiment, the drive motor for the at least one cleaning roller is positioned in a receptacle for the holding device, onto which the at least one cleaning roller, which is held on the holding device, is placed during operation of the surface cleaning device. This results in optimized use of space. The space already available in the receptacle is also used to position the drive motor. In one embodiment, a cassette holder for at least one cassette with the holding device is positioned on the cleaning head body, wherein the at least one cassette is detachably seated in the cassette holder and wherein a guide device is provided, via which at least one cassette is guided on the cassette holder in a direction parallel to an insertion direction and is held transversely to the insertion direction.This results in simple and defined guidance of the at least one cassette on the cleaning head. This also makes axial locking easy when inserting the at least one cassette. Furthermore, removal is simple.

[0041] 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.

[0042] In principle, it is also possible for the at least one cleaning roller to have a bristle covering and, for example, to be provided only with bristle bundles, or for both bristle bundles and textile areas to be present.

[0043] In principle, the surface cleaning device according to the invention can be implemented, for example, as a hand-held surface cleaning device with a rod device. An operator, who stands behind the cleaning head on a surface to be cleaned, guides the surface cleaning device with the cleaning head over the surface to be cleaned while standing. In one embodiment, a self-propelled and self-steering design is provided, and in particular, a design as a vacuum robot, a mop robot, or a vacuum-mop robot.

[0044] 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;

[0045] 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.

[0046] The tank facility for dirty fluid allows you to hold a dirty water solution.

[0047] By moistening the surface to be cleaned, particularly via at least one cleaning roller, dirt can be removed more effectively from a hard floor surface.

[0048] The scraper device allows dirt fluid to be effectively scraped off and removed from at least one cleaning roller.

[0049] 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.

[0050] The at least one rotatable brush roller with the associated blower device enables suction operation for the surface cleaning device, for example to also be able to clean textile floor surfaces.

[0051] According to the invention, a method of the type mentioned at the outset is provided, in which at least one spring-loaded flap is located on the holding device, via which the at least one cleaning roller is held clamped on the holding device, and in which a scraper device is located on the at least one flap, which is positioned by the at least one flap on the at least one cleaning roller.

[0052] The method according to the invention has the advantages already explained in connection with the surface cleaning device according to the invention.

[0053] In particular, the method according to the invention can be carried out on the surface cleaning device according to the invention or the surface cleaning device according to the invention can be operated with the method according to the invention.

[0054] The following description of preferred embodiments, taken in conjunction with the drawings, serves to further explain the invention. Figure 1 shows 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);

[0055] Figure 2 shows a bottom view of the surface cleaning device according to

[0056] Figure 1 in the direction A according to Figure 1;

[0057] Figure 3 shows a further perspective view of the surface cleaning device according to Figure 1 with the housing parts removed;

[0058] Figure 4 shows a partial view of the surface cleaning device according to

[0059] Figure 1 in area B according to Figure 1, wherein a receptacle for a cleaning roller is closed;

[0060] Figure 5 is the same view as Figure 4, with a cover on the receptacle open;

[0061] Figure 6 is the same view as Figure 5, with a cassette with a cleaning roller half removed and half inserted;

[0062] 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;

[0063] Figure 8 shows a further view of the cassette with cleaning roller according to Figure 7; Figure 9 shows the cassette according to Figure 7 with the flap open;

[0064] 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);

[0065] 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);

[0066] Figure 12 is a schematic sectional view of the cassette with

[0067] Cleaning roller with closed flap (corresponding to the view in Figure 10);

[0068] Figure 13 is a schematic sectional view of the cassette with

[0069] Cleaning roller with the flap open (according to Figure 11);

[0070] Figure 14 is a similar view of the cassette as in Figure 8 with the cleaning roller removed;

[0071] Figure 15 is a further view of the cassette according to Figure 14 without the cleaning roller;

[0072] Figure 16 is a sectional view of the surface cleaning device in the

[0073] Level E according to Figure 4 or 5;

[0074] Figure 17 shows a detailed view of a sectional view of a

[0075] Cassette with retained cleaning roller;

[0076] Figure 18 is a partial sectional view of the surface cleaning device in plane F according to Figure 5; Figure 19 is a partial sectional view of another embodiment of a surface cleaning device;

[0077] Figure 20 is a perspective view of a cassette holder with a cassette held thereon, the cassette in turn holding a cleaning roller;

[0078] Figure 21 shows another view of the cassette holder (without cassette and cleaning roller);

[0079] Figure 22 shows a further view of the cassette holder according to Figure 20 (without cassette and cleaning roller);

[0080] Figure 23 is a sectional view of the surface cleaning device in the region of a cleaning roller in a plane parallel to the plane F according to Figure 5, wherein a cleaning roller is placed on a surface to be cleaned;

[0081] Figure 24 shows a further sectional view with the cleaning roller raised relative to a surface to be cleaned;

[0082] Figure 25 is a detailed view of area G according to Figure 3 with a pulley element;

[0083] Figure 26(a) is a detailed view of an embodiment of a surface cleaning device in which a receptacle for the cleaning roller is closed;

[0084] Figure 26(b) is the same view as Figure 26(a) with the cover removed; Figure 27 is another embodiment of a cassette with the cover attached;

[0085] Figure 28(a) and (b) detail views of a cover on a receptacle in a further embodiment; and

[0086] Figure 29(a) and (b) further detailed views of another embodiment of a surface cleaning device in the region of a receptacle.

[0087] 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.

[0088] The surface cleaning device 10 comprises a cleaning head 12, which comprises a self-propelled and self-steering cleaning head body 14 (driving body).

[0089] 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).

[0090] 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).

[0091] A travel 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 have a common wheel axle 22. The wheels 20 are driven by the travel drive 18 to rotate about the wheel axle 22. 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 an axis of rotation. It is pivotable about a steering axis that is perpendicular to this axis of rotation. It is fundamentally possible for the support roller 24 to be a passive steering roller that is not driven (and in particular not driven to rotate about the corresponding axis of rotation and in a pivoting movement about the steering axis). A change in direction of the cleaning head 12 is achieved by appropriately controlling the wheels 20a, 20b by a control device positioned on the cleaning head body 14.A change of direction occurs in particular by rotating the wheels 20a, 20b at different speeds.

[0092] 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.

[0093] The surface cleaning device 10 has a main direction of travel 26. This main direction of travel 26 is a forward direction of travel. When the cleaning head 12 travels in the main direction of travel 26, the rotation axis of the support roller 24 is aligned parallel to the wheel axle 22.

[0094] 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.

[0095] The surface cleaning device 10 comprises (at least) one brush roller 30 for suction operation. It further comprises another cleaning roller 32, by means of which, in particular, wet-wipe cleaning can be carried out. 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.)

[0096] 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.

[0097] 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.

[0098] 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).

[0099] In one embodiment, the tank device 42 and the tank device 44 are combined and can be removed from the cleaning head 12 as a combination or inserted therein. Dirt fluid is understood to be a fluid that is generally flowable. It can be composed of dirt particles or it can be a mixture of dirt particles and a liquid (in particular, water, possibly with a surfactant cleaning agent additive).

[0100] 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.

[0101] 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.

[0102] 46 cliff sensors 52 (see Figure 2) are arranged on the underside of the cleaning head body 14 and are connected to the control unit for signaling purposes. These cliff sensors 52 serve to prevent the surface cleaning device 10 from falling, for example, in the area of ​​stairs, by detecting "cliffs" accordingly.

[0103] 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.

[0104] At the front area 56, adjacent to the rear area 54, there is a

[0105] A receptacle 58 for a dirt collection container (not shown in Figure 3) is arranged. The dirt collection container in the receptacle 58 serves in particular for collecting dry dirt and is assigned to the brush roller 30.

[0106] 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.

[0107] 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.

[0108] The dirt collection container can be removed from the holder 58 for emptying and cleaning.

[0109] 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.

[0110] A rechargeable battery device 70 is located on the front region 56 of the cleaning head body 14, following the receiving area 64 with the brush roller 30 in the longitudinal axis 40. In the embodiment shown, the receiving area 64 with the brush roller 30 is located between the battery device 70 and the receptacle 58 for the dirt collection container with respect to the longitudinal axis 40.

[0111] 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.

[0112] The rotation axis 66 of the brush roller 30 is oriented transversely and in particular perpendicularly to the longitudinal axis 40.

[0113] The rotation axis 66 is oriented parallel to the installation plane 28.

[0114] 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).

[0115] At the front end 56 of the cleaning head 12, side brushes 74a, 74b are also located. These brushes extend beyond a periphery of the cleaning head body 14.

[0116] In one embodiment, a first side brush 74a and a second side brush 74b are assigned. Respective drive motors 76 for the side brushes 74a, 74b are located on the front region 56 of the cleaning head body 14. The side brushes 74a, 74b are rotatable about a rotation axis that is transverse and, in particular, perpendicular to the installation plane 28 or at a small, acute angle, in particular less than 10°, to the installation plane 28.

[0117] 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.

[0118] 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.

[0119] 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.

[0120] 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.

[0121] The cleaning head body 14 has a first lateral side 80 and an opposite second lateral side 82. The first lateral side 80 and the second lateral side 82 are in particular mirror-symmetrical to the center plane on the longitudinal axis 40.

[0122] The first lateral side 80 and the second lateral side 82 can be flat or curved. 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.

[0123] 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.

[0124] 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.

[0125] 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.

[0126] 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.

[0127] A cassette 92 is provided for positioning the cleaning roller 32 in the receptacle 84 (see Figures 7 to 24). The cassette 92 includes a holding device 94 for the cleaning roller 32. When the cassette 92 is properly positioned in the receptacle 84 of the cleaning head 12, the cleaning roller 32 is rotatably driven about a rotation axis 96 by the holding device 94.

[0128] 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.

[0129] 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.

[0130] 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.

[0131] 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.

[0132] 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.

[0133] 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. The cassette 92 can thus be assigned a circumferential direction 114 (see Figure 12) and a radial direction 116. In the illustration according to Figure 12, the axial axis 108 is perpendicular to the plane of the drawing. The circumferential direction 114, the radial direction 116, and the axial axis 108 define polar coordinates.

[0134] The peripheral wall 106 has a first region 118 and a second region 120.

[0135] The second region 120 is movably arranged on the first region 118.

[0136] 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.

[0137] 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°.

[0138] This allows the cleaning roller 32 to be positioned in the first area 118 without jamming.

[0139] In one embodiment, the peripheral wall 106 is closed at the first region 118, i.e., it is formed continuously without openings or the like. 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.

[0140] The second part 104 of the guide device 100 is located on the outer side 134.

[0141] In particular, the second part 104 of the guide device 100 is designed as a guide element in the manner of a guide block, and the first part 102 is a counter-element thereto. The second part 104 is designed in cooperation with the first part 102 such that a guide direction of the guide device 100 for the cassette 92 on the cassette holder 98 is parallel to the axis 108 or parallel to the rotation axis 96. Corresponding undercut surfaces 136 ensure that the cleaning roller 32 is held in position in directions transverse to the axis 108 or transverse to the rotation axis 96.

[0142] 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.

[0143] The connection 138 provides a fluid-effective connection to that part of the humidification device 140 which is positioned on the cleaning head 14 outside the cassette 92.

[0144] 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. 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.

[0145] In one embodiment, the pivot bearing assembly 156 includes a plurality of spaced pivot bearings 150 aligned along the pivot axis 148.

[0146] In the embodiment shown (see Figure 7), three pivot bearings 150 are provided.

[0147] 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.

[0148] 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.

[0149] 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.

[0150] 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.

[0151] 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.

[0152] In the closed position 158 of the flap 144, the second end 162 faces the installation plane 28 (see, for example, Figure 10).

[0153] 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).

[0154] 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.

[0155] By moving the flap 144 away, this form fit can be canceled (Figures 9, 11, 13).

[0156] A scraper device 166 for the cleaning roller 32 is arranged on the flap.

[0157] 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.

[0158] 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.

[0159] 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.

[0160] 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.

[0161] 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, when the surface cleaning device 10 is in the closed position 158 of the flap 144 (and the cassette 92 is properly inserted on the cleaning head 12), penetrates into the lining 172 of the cleaning roller 32. 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. The wiper bar 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.

[0162] 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).

[0163] The scraper bar 176 is arranged and designed such that it leads to the mouth device 174 in a funnel shape.

[0164] 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.

[0165] 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.

[0166] 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). 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.

[0167] 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.

[0168] 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.

[0169] 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.The insertion direction 184 is at least approximately parallel to the rotation axis 96.

[0170] The combination of cassette 92 with cleaning roller 32 fixed to it is inserted into the holder 84.

[0171] 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.

[0172] 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.

[0173] A removal direction 186 (Figure 5) is opposite to the insertion direction 184 and antiparallel to it.

[0174] The removal takes place at the opening 88 facing away from the transverse wall 86.

[0175] The cleaning roller 32 can then be removed from the cassette 92 and cleaned, for example, in a washing machine.

[0176] When inserting the cassette 92 with the cleaning roller 32 in the insertion direction 184 until axial fixation is achieved, an automatic fluid-effective connection of the connection 138 on the cassette with the remainder of the moistening device 140 on the cleaning head 12 takes place. An automatic torque-effective coupling of the cleaning roller 32 to a drive takes place. The orifice device 174 is automatically aligned for fluid-effective coupling to the tank device 42 for dirty fluid. When removing the cassette 92 with the cleaning roller 32 and the corresponding release of the axial fixation, the connection 138 is automatically uncoupled from the remainder of the moistening device 140, the cleaning roller 32 is removed from a torque transmission device, and the orifice device 174 is automatically released from the fluid-effective coupling to the tank device 42.

[0177] 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.

[0178] 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.

[0179] In one embodiment, the connection 138 is located on or near the edge flange 180. For axially fixing the cassette 92 in the receptacle 84, a fixing device 192 is provided, which fixes the cassette 92 in the receptacle 84 relative to the insertion direction 184 and the removal direction 186. The guide device 100 fixes it in all transverse directions.

[0180] The fixing device 192 has a first part 194, which is arranged outside the cassette 92 and is associated with the transverse wall 86. The first part 194 of the fixing device 192 is fixedly arranged on the cleaning head body 14 in the sense that it cannot be removed from the cleaning head body 14. In embodiments, particularly with a movable cassette holder, the first part 194 itself can be movable, or it can be positioned immovably as a whole on the cleaning head body 14. 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).

[0181] 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.

[0182] A second part 196 of the fixing device 192, which corresponds to the first part 194, is arranged on the cassette 92.

[0183] 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.

[0184] 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.

[0185] 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.

[0186] 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.

[0187] There is a connection to the control device via control lines and an electrical connection to the battery device 70.

[0188] 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.

[0189] 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.

[0190] 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.

[0191] A motor driver 202 is provided, which is positioned in the interior 170 of the sleeve 168 when the cleaning roller 32 is mounted on the drive motor 200. The motor driver 202 is rotationally fixedly coupled to the cleaning roller 32.

[0192] In a variant of an embodiment (Figure 19), a drive motor 204 is provided, which is located externally relative to the sleeve 168 of the cleaning roller 32. A driver 206 is coupled to the drive motor 204 in a rotationally fixed manner and projects into the sleeve 168 of the corresponding cleaning roller 32.

[0193] 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

[0194] 44 can be used, or the cleaning head 12 can be realized with a lower height parallel to the height axis 128.

[0195] 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.

[0196] 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.

[0197] Snap-on devices are well known and are used, for example, in furniture construction.

[0198] 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 exerting pressure in a direction parallel to the insertion device 194. It can be provided that a spring device is also arranged on the housing 210, which, when the connection is released, imparts a feed to the cassette 92 and, in a sense, "ejects" it.

[0199] 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.

[0200] 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.

[0201] 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.

[0202] 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.

[0203] 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.

[0204] 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.

[0205] When the cover 90 is opened (Figures 5, 6), the cover 90 is pivoted from the rear end 38 to the front end 36.

[0206] The hinge 214 is, for example, spring-loaded to ensure good closure of the opening 88 on the second lateral side 82.

[0207] It is particularly provided that when the lid 90 is closed (Figure 4), the lid 90 is spaced apart from the cassette 92 and thereby from the second end face 112, so that no pressure force (which could trigger the "push-to-release" mechanism of the fixing device 192) acts on the cassette 92.

[0208] To fix the cassette 92 (with the cleaning roller 32) to the receptacle 84, the cassette 92 is moved into the receptacle 94 in the insertion direction 184 with the cover 90 open. The cassette 92 is aligned such that the first part 102 and the second part 104 of the guide device 100 engage with each other.

[0209] The cassette 92 is displaced in the insertion direction 184 until the first part 194 and the second part 196 of the fixation device 192 (the snap-action device 208) correspond to each other and axial fixation is achieved. This can be indicated acoustically, for example, by a clicking sound.

[0210] 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.

[0211] 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.

[0212] 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.

[0213] 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.

[0214] This advance is in particular at least 0.5 cm, and preferably at least 1 cm, and in particular at least 2 cm. 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.

[0215] 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.

[0216] 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.

[0217] As an alternative to a pivotable cover 90, it is also possible to provide a cover 222 (Figure 26(a)) that can be completely removed from the cleaning head body 14 (Figure 26(b)). In particular, the cover 222 is held to the cleaning head body 14 via pin elements on the cover or on the cleaning head body 14.

[0218] In a further embodiment (Figures 27 to 29(b)), a cover 224 is fixedly arranged on the cassette 92.

[0219] 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.

[0220] 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.

[0221] The cassette 92 with cover 224 or 226 can be removed.

[0222] 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.

[0223] In one embodiment, the cassette holder 98 is separate from the receiving wall 228 and movably positioned within the receptacle 84.

[0224] A pivot bearing device 230 is provided, by which the cassette holder 98 is pivotally mounted on the cleaning head 14.

[0225] 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.

[0226] The pivot axis 232 is parallel to the installation plane 28. 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.

[0227] 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.

[0228] 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.

[0229] 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.

[0230] In one embodiment (see Figure 21), the webs 242 are bow-shaped. The pivot bearing device 230 is formed by the webs 242, and in particular the part that sits on the cassette holder 98. This part cooperates with another part that sits on the cleaning head body 14.

[0231] The receiving wall 228 has openings 244 that cooperate with the webs 242. A web 242 (or a web combination in the case of the bracket shape) extends through each opening 244. The counterpart 246 to a web 242, by means of which the pivot bearing device 230 is then formed, is, as mentioned above, fixedly positioned outside the receptacle 84 on the cleaning head body 14.

[0232] 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.

[0233] The counterpart 246 of the pivot bearing device 230 is located in particular on the front region 56 of the cleaning head body 14.

[0234] In the embodiment shown, two counterparts 246 are provided for cooperation with two webs or web combinations 242.

[0235] 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.

[0236] 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.

[0237] 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.

[0238] In one embodiment, this additional force is provided in the range between 7 N and 17 N. 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 to be achieved. 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).

[0239] 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.

[0240] 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.

[0241] The installation plane 28 is defined by the wheels 20 and the support roller 24. The brush roller 30 is located on the installation plane 28. When the cassette holder 98 is immobile, the cleaning roller 32 is also located on the installation plane 28.

[0242] In the inventive solution with 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 downward beyond the installation plane until an end stop is reached. The surface cleaning device 10 comprises an active lifting device 250 (see Figure 3) to lift 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 is also 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 pure 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.

[0243] 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).

[0244] 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).

[0245] The fastening element 258 is located on the upper part of the wall 234. This provides space-saving access.

[0246] The fastening element 258 is in particular arranged at least approximately centrally between opposite end faces of the cassette holder 98.

[0247] The cable pull device 254 further comprises a motor 260 with a gear mechanism. This motor 260 is arranged at the front region 56 of the cleaning head body 14 and, in particular, in the region of the battery device 70. Relative to the longitudinal axis 40, the motor 260 is positioned, in one embodiment, between the receptacle 58 for the dirt collection container and the front end 36 of the cleaning head body 14.

[0248] The motor 260 is positioned in particular near the blower device 62.

[0249] In one embodiment, it is further provided that the motor 260 is arranged on the same side as the blower device 62.

[0250] 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.

[0251] At a third area 266, a further change of direction occurs and a coupling to the motor 260 occurs.

[0252] 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.

[0253] The motor 260 maintains this position 252. In particular, it is intended that the position 252 is also maintained when the motor 260 is not operating (not supplied with electrical energy).

[0254] It is further provided, in particular, that activation of the motor 260 is necessary for moving the cassette holder 98 out of position 252 and thereby lowering it. The motor 260 then effectively cancels the pull by rotating in a direction opposite to the lifting direction, and the spring device 248 then causes the lowering. In one embodiment, the cable pull device 254 comprises a pulley element 268. The pulley element 268 is arranged, for example, on the first region 262 of the pull cable 256.

[0255] In one embodiment, the pulley element 268 is arranged on the rear region 54 of the cleaning head body 14.

[0256] In particular, it is arranged closest to the receptacle 58 (see Figure 3).

[0257] 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.

[0258] The displacement direction 272 is in particular a linear direction.

[0259] 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.

[0260] The first traction cable 274 is fixedly connected at one end 278 (possibly using a spring device) to the cleaning head body 14 and, for example, to the rear region 54.

[0261] At another end 280, this first pull cable 274 is connected to the motor 260. (In Figure 25, the motor 260 is indicated, but its actual position is shown in Figure 3.)

[0262] The loop 276 lies between the ends 278 and 280. A second pull 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.

[0263] 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.

[0264] The pulley element 268 allows the necessary motor power to be halved, resulting in a doubling of the travel distance.

[0265] 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.

[0266] 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.

[0267] 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.

[0268] The surface cleaning device 10 according to the invention functions as follows: 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.

[0269] The flap 144 holds the cleaning roller 32 to the cassette 92.

[0270] 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.

[0271] 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.

[0272] 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.

[0273] 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.

[0274] The cover 90 is closed.

[0275] A cleaning operation can then be performed. 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 a cleaning operation. This creates a floating bearing. The contact pressure can be increased to improve the cleaning effect.

[0276] 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).

[0277] 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.

[0278] After completing a cleaning process, an operator can remove the cleaning roller 32, for example, to wash it in a washing machine. To do so, they open the cover 90. By applying pressure to the cassette 92 or the cleaning roller 32 in the area of ​​the opening 88 at a corresponding end 288 (see Figure 5), they release the fixing device 192. The pressure snap device 208 provides a "push-to-release" mechanism.

[0279] In addition to releasing the fixation 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 allow easier removal. An operator can then remove the cassette 92 with the contaminated cleaning roller (see, for example, Figure 7). By folding up the flap 144, the operator can remove the cleaning roller 32 from the cassette 92.

[0280] List of reference symbols

[0281] Surface cleaning device

[0282] cleaning head

[0283] Cleaning head body

[0284] Area (ground)

[0285] Drive

[0286] Wheels a First wheel b Second wheel

[0287] wheel axle

[0288] Support roller

[0289] Main direction of travel (forward direction)

[0290] Installation level

[0291] Brush roller

[0292] cleaning roller

[0293] Navigation device

[0294] Front end

[0295] Rear end

[0296] Longitudinal axis

[0297] Tank facility for dirty fluid

[0298] Tank facility for cleaning fluid

[0299] bottom

[0300] Top

[0301] Impact body

[0302] Cliff sensor

[0303] Rear area

[0304] Front area

[0305] Recording

[0306] Connection

[0307] Blower device

[0308] Pick-up area Rotation axis Drive motor Battery device Contact elementa Side brush b Side brush Drive motor Cover

[0309] First lateral side Second lateral side Image Transverse wall Opening

[0310] Cover Cassette Holding device Rotation axis 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 Underside 4 End face 6 Upper area 8 Height axis Angle area Inside Outside Undercut surface Connection Humidification device Nozzle device Flap

[0311] Pivot bearing device Pivot axis Pivot bearing Shaft element Receptacle Spring device Closed position First end Second end Angular range

[0312] Stripper device sleeve

[0313] Interior trimmings outlet device scraper bar "penetration" edge flange pivot bearing insertion direction removal direction bearing side

[0314] Bearing drive side Fixing device First part Second part

[0315] Nose

[0316] drive motor

[0317] Motor driver

[0318] drive motor

[0319] Driver

[0320] Snap-action housing

[0321] Feed device hinge

[0322] Swivel axis

[0323] Feed device spring device cover

[0324] Lid

[0325] Lid

[0326] Receiving wall swivel bearing device swivel axis

[0327] wall

[0328] transverse area

[0329] holder

[0330] outside

[0331] web

[0332] opening

[0333] Counterpart spring device lifting device position

[0334] Cable pull device pull rope

[0335] Fastening element engine, gearbox first area

[0336] Second area

[0337] Third area

[0338] Pulley element

[0339] Displacement element

[0340] Direction of displacement

[0341] First pull rope

[0342] loop

[0343] End

[0344] End

[0345] Second pull rope

[0346] End

[0347] Spring device

[0348] End

Claims

Patent claims 1. Surface cleaning device, comprising a cleaning head (12), at least one cleaning roller (32) rotatable about a rotation axis (96), a drive motor (200) for the at least one cleaning roller (32), and a holding device (94) on which the at least one cleaning roller (32) is rotatably mounted and which holds the at least one cleaning roller (32) to the cleaning head (12), characterized in that the holding device (94) has at least one pivotable flap (144) to which a spring device (156) is assigned, wherein the at least one cleaning roller (32) is held clamped to the holding device (94) by the at least one flap (144), and in that a wiper device (166) for wiper off dirty fluid from the at least one cleaning roller (32) is seated on the at least one flap (144).

2. Surface cleaning device according to claim 1, characterized by at least one of the following: a clamping force exerted by the at least one flap (144) on the at least one cleaning roller (32) is oriented transversely and in particular perpendicularly to the rotational axis (96) of the at least one cleaning roller (32); a clamping force exerted by the at least one flap (144) on the at least one cleaning roller (32) acts in the direction of a partial region of a peripheral wall (106) of the holding device (94).

3. Surface cleaning device according to claim 1 or 2, characterized in that a pivot axis (148) of a pivoting device (146) of the at least one flap (144) is oriented parallel or at an acute angle of at most 30° to the rotation axis (96) of the at least one cleaning roller (32).

4. 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) to a surface (16) to be cleaned, wherein the rotation axis (96) of the at least one rotating roller (32) is oriented parallel to the mounting plane (28); the rotation axis (96) of the at least one cleaning roller (32) is oriented transversely and in particular perpendicularly to a forward travel direction (26) of the cleaning head (12).

5. Surface cleaning device according to one of the preceding claims, characterized in that the holding device (94) has a peripheral wall (106) for the at least one cleaning roller (32), which covers a partial area of a circumference of the at least one cleaning roller (32).

6. Surface cleaning device according to claim 5, characterized by at least one of the following: the peripheral wall (106) has a first region (118) on which a second region (120) is located, wherein the second region (120) is formed by the at least one flap (144); the peripheral wall (106) is closed and / or continuous; the circumferential wall (106) has a first circumferential extent when at least one flap (144) is open, wherein the first circumferential extent has an angular range (130) of less than 180° and in particular less than 150°, and wherein in particular the first circumferential extent is formed by means of a first region (118) of the circumferential wall (106); the circumferential wall (106) has a second circumferential extent when at least one flap (144) is closed, wherein the at least one closed flap (144) exerts the clamping force on the at least one cleaning roller (32), and the second circumferential extent has an angular range (164) of greater than 180°, wherein the second circumferential extent is formed in particular by a first region (118) and a second region (120) of the circumferential wall (106) together.

7. Surface cleaning device according to one of the preceding claims, characterized in that the cleaning head (12) is assigned a support plane (28) for a surface (16) to be cleaned and the support plane (28) is assigned a height axis (128) oriented perpendicular to the support plane (28), and in that the holding device (94) has an upper region (126) at which the holding device (94) has a maximum distance from the support plane (28) in the height axis (128), and in that a pivot bearing device (146) for the at least one flap (144) is seated on the upper region (126) facing away from the support plane (28).

8. Surface cleaning device according to claim 7, characterized in that a first circumferential extension of a circumferential wall (106) of the holding device (94) extends from an underside (122) of the circumferential wall (106), which faces the installation plane (28), to the pivot bearing device (146).

9. Surface cleaning device according to claim 7 or 8, characterized in that a second circumferential extension of a circumferential wall (106) of the holding device (94) extends from the pivot bearing device (146) to a front end (162) of the at least one flap (144), wherein the front end (162) faces the installation plane (28) when at least one flap (144) is closed and exerts a clamping force on the at least one cleaning roller (32).

10. Surface cleaning device according to one of claims 7 to 9, characterized in that the pivot axis (148) of the pivot bearing device (146) lies above the rotation axis (96) with respect to the height axis (128) and the pivot axis (148) and the rotation axis (96) intersect the same height axis (128) or are offset by at most 3 cm in a transverse direction.

11. Surface cleaning device according to one of the preceding claims, characterized in that exactly one flap (144) is provided, to which in particular a pivot bearing device (146) with a plurality of spaced pivot bearings (150) is assigned.

12. Surface cleaning device according to one of the preceding claims, characterized in that an outlet device (174) for discharging stripped-off dirty fluid and coupling stripped-off dirty fluid into a tank device (42) for dirty fluid is arranged on the at least one flap (144).

13. Surface cleaning device according to one of the preceding claims, characterized in that the at least one flap (144) has a first end face (160) and an opposite second end face (162), and in that the wiper device (166) has at least one wiper strip (176) which can penetrate into a facing (172) of the at least one cleaning roller (32) and which is positioned between the first end face (160) and the second end face (162) on the at least one flap (144) and is in particular spaced apart from the first end face (160) and spaced apart from the second end face (162).

14. Surface cleaning device according to claim 13, characterized in that an outlet device (174) for discharging dirty fluid from the at least one cleaning roller (32) is positioned on the at least one wiper bar (176).

15. Surface cleaning device according to claim 14, characterized in that the mouth device (174) is positioned between the first end face (160) and the second end face (162) and in particular is spaced apart from the first end face (160) and spaced apart from the second end face (162).

16. Surface cleaning device according to one of the preceding claims, characterized in that at least one guide element (104) for guiding and fixing the holding device (94) to the cleaning head (12) is located on an outer side of a peripheral wall (106) of the holding device (94) facing away from the at least one cleaning roller (32).

17. Surface cleaning device according to claim 16, characterized in that the at least one cleaning roller (32) is positioned between the at least one guide element (104) and a tank device (42) for dirty fluid.

18. Surface cleaning device according to claim 16 or 17, characterized in that, with respect to a circumferential direction of the at least one cleaning roller (32), the at least one guide element (104) is positioned in an angular range between 70° and 110° and in particular 90° to a pivot bearing device (146) for the at least one flap (144).

19. Surface cleaning device according to one of the preceding claims, characterized in that the holding device (94) is a cassette (96) or part of a cassette (96) which is removably positioned on the cleaning head (12) and in particular can be removed from a receptacle (84) on the cleaning head (12) in a removal direction (186) at least approximately parallel to the axis of rotation (96) of the at least one cleaning roller (32) and can be inserted into the receptacle (84) on the cleaning head (12) in a direction opposite to the removal direction (186).

20. Surface cleaning device according to one of the preceding claims, characterized in that a pivot bearing (182) for the at least one cleaning roller (32) is positioned on the holding device (94).

21. Surface cleaning device according to one of the preceding claims, characterized in that an edge flange (180) is arranged on the end face of the holding device (94), which provides an axial contact surface for the at least one cleaning roller (32).

22. Surface cleaning device according to claim 21, characterized in that the edge flange (180) is seated on the holding device (94) facing away from a pivot bearing (182).

23. Surface cleaning device according to claim 21 or 22, characterized in that a connection (138) for a moistening device (140) for cleaning liquid is arranged on the holding device (94) on or in the region of the edge flange (180).

24. Surface cleaning device according to one of claims 21 to 23, characterized in that parts (198) of a fixing device (192) for fixing the holding device (94) in a receptacle (84) of the cleaning head (12) with respect to an insertion direction (184) and a removal direction (186) are arranged on the edge flange (180) and in particular at least one nose (198) of the fixing device (192) is arranged.

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

26. Surface cleaning device according to one of the preceding claims, characterized in that a cassette holder (98) for at least one cassette (92) with the holding device (94) 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 an insertion direction (184) and is held transversely to the insertion direction (184).

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

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

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

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

31. Method for operating a surface cleaning device which comprises a cleaning head (12), at least one cleaning roller (32) which can be rotated about an axis of rotation (96), a drive motor (200) for the at least one cleaning roller (32) and a holding device (94) for the at least one cleaning roller (32), in which at least one spring-loaded flap (144) is seated on the holding device (94), by means of which flap the at least one cleaning roller (32) is held clamped on the holding device (94), and in which a wiper device (166) is seated on the at least one flap (144), which wiper device is positioned on the at least one cleaning roller (32) by the at least one flap (144).

Images