WO2006061044A1

WO2006061044A1 - Floor cleaning device

Info

Publication number: WO2006061044A1
Application number: PCT/EP2004/014132
Authority: WO
Inventors: Ralph Diehl; Günter RAUSCHER
Original assignee: Alfred Kärcher Gmbh & Co. Kg
Priority date: 2004-12-11
Filing date: 2004-12-11
Publication date: 2006-06-15
Also published as: EP1827192B1; ATE519410T1; CN101076276B; CN101076276A; EP1827192A1

Abstract

The invention relates to a floor cleaning device (10) comprising a housing (11) which is provided with a cleaning opening (36) which is arranged on the lower side thereof and an exchangeable cleaning roller (15) which is rotationally mounted in the housing (11) adjacent to the cleaning opening (36) and which is detachably connected to a rotationally driven driver (40) on a first front side (73) and can be brought into contact with the driver by means of the longitudinal axis (86) which is directed in a diagonal manner on the rotational axis (93) of the driver (40) and can be directed in a collinear manner on the rotational axis (83) of the driver (40). The aim of the invention is to further develop said floor cleaning device such that the cleaning roller (15) can be exchanged in a simple manner. According to the invention, the driver (40) and the cleaning roller (15) comprise linear-shaped gliding surfaces (55, 79) which are arranged on top of each other and which glide along each other when the cleaning roller (15) is exchanged.

Description

Floor cleaning device

The invention relates to a floor cleaning appliance having a housing having a cleaning opening on the underside and an exchangeable cleaning roller which is rotatably mounted adjacent to the cleaning opening in the housing and which is releasably engaged on a first end face with a rotatably driven driver and with obliquely aligned to the axis of rotation of the driver longitudinal axis engageable with the driver and co-linear with the axis of rotation of the driver is alignable.

Such floor cleaning devices are known for example in the form of sweeping devices, in which the cleaning roller is designed as a brush roller with a plurality of bristles for sweeping a bottom surface. The sweeping device usually comprises a dirt collecting container which can be detachably connected to the housing and which is connected to the housing via a dirt inlet opening, so that dirt which is picked up by the brush roller from the bottom surface can be transferred via the dirt inlet opening into the dirt collecting container. For emptying, the dirt collector can be separated from the housing.

To be able to replace the cleaning roller in the above-mentioned floor cleaning devices, DE 198 20 628 Cl proposes to provide a drive via a belt drive of an electric motor rotatably driven driver in the form of a gear on which the cleaning roller is placed on the front side, the teeth of Gear engage with corresponding inner grooves of the cleaning roller, so that the rotational movement of the gear is transferable to the cleaning roller. The cleaning roller can be inserted into the housing through the cleaning opening.

can be set, with it aligned with the axis of rotation of the gear aligned longitudinal axis with the gear engaged and then colinearly aligned with the axis of rotation of the driver. There is a surface contact between the teeth of the gear and the corresponding grooves of the driver by the surface of the teeth create a flat surface on the side surface of the grooves. The replacement of the cleaning roller on the cleaning opening has proved to be advantageous, because this gives the user the ability to clean different floor surfaces using the floor cleaning device, each one adapted to the nature of the respective floor surface cleaning roller can be used. In the known floor cleaning apparatus, however, the difficulty may arise that the teeth of the gear in the receiving grooves tilt, whereby the replacement of the cleaning roller is difficult.

Object of the present invention is to provide a floor cleaning device of the type mentioned in such a way that the cleaning roller can be replaced in a simpler way.

This object is achieved in a floor cleaning device of the generic type according to the invention that the driver and the cleaning roller linearly abutting sliding surfaces which slide when replacing the cleaning roller along each other.

By providing slide surfaces sliding along each other, the replacement of the cleaning roller is simplified. Both the cleaning roller and the driver each have at least one sliding surface, wherein A 4 177 c

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they do not form a two-dimensional contact, but only abut one another linearly. When inserting the cleaning roller it can be applied with its sliding surface to the corresponding sliding surface of the driver and in the subsequent alignment of the cleaning roller collinear to the axis of rotation of the driver slide the sliding surfaces with linear contact along each other. By providing a linear contact, a mechanical over-determination of the holder of the cleaning roller on the driver is avoided and this in turn has the consequence that the replacement of the cleaning roller is particularly simple. The contact line between the sliding surfaces of the driver and the cleaning roller may extend along a circumference, wherein the plane of the circumference is predetermined by the orientation of the cleaning roller. By co-linear alignment of the cleaning roller, the contact line running along the circumference can be pivoted into a plane oriented perpendicular to the axis of rotation of the driver.

In a preferred embodiment of the floor cleaning appliance according to the invention, a first sliding surface forms the lateral surface of a truncated cone and a second sliding surface cooperating with the first sliding surface forms the lateral surface of a spherical layer. This can ensure that, regardless of the orientation of the cleaning roller relative to the axis of rotation of the driver when joining cleaning roller and driver along a circumference extending contact line between the two contact surfaces formed. A 4 177 c

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Preferably, the first sliding surface is arranged on the driver and the second sliding surface on the cleaning roller.

In order to further simplify the joining of the cleaning roller and the driver through the cleaning opening of the housing, it is provided in an advantageous embodiment that a conical guide surface adjoins the first and / or the second sliding surface. This gives the possibility, when joining the cleaning roller and driver, first to apply a sliding surface to the conical guide surface adjoining the other sliding surface and to move it over to the other sliding surface.

By the engagement of driver and cleaning roller ensures that a rotational movement of the driven by a motor driver can be transferred to the cleaning roller. Preferably, the cleaning roller on the front side a Mitnahmeausnehmung, which is placed on the driver to form a rotationally fixed connection. The driver thus immersed in the driving recess of the cleaning roller. Carrier and driving recess can thereby rotatably connected to each other via obliquely to the rotational direction of the cleaning roller aligned receptacles and corresponding projections.

The driving recess is preferably designed frusto-conical and the driver advantageously comprises a spherical layer sliding section. The peripheral wall of the driving recess forms in such an embodiment, a first sliding surface, the formation of a A 4 177 c

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line-shaped contact to the spherical layer sliding portion of the driver can be applied, wherein the lateral surface of the sliding portion is a second sliding surface.

As already explained, it is advantageous if, for example, a conical guide surface adjoins the second sliding surface. For this purpose, it is provided in an advantageous embodiment that connects in the direction of the cleaning roller to the conical-shaped sliding portion of the driver, a truncated cone-shaped guide portion.

To put the driver in a structurally simple way in rotation, this is rotatably in an advantageous embodiment with a rotatably mounted on a support wall, such as a housing wall, mounted rotary member, in particular a pulley, connected via transmission means, in particular a belt drive, with a Motor is coupled.

A particularly compact design of the floor cleaning device can be achieved in that the driver is configured disk-like and bears frontally on the rotary part driven by the motor.

As already explained, the rotational movement of the driver can be transmitted via at least one projection and an associated receptacle on the cleaning roller. It is advantageous if the driver and the cleaning roller via at least one of the axis of rotation of the driver facing rib and a rib-receiving groove engage with each other, wherein the rib and the groove of the linearly abutting sliding A 4 177 c

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stand out. For example, it may be provided that the first sliding surface forms the circumferential surface of a frusto-conical driving recess of the cleaning roller, wherein the at least one rib protrudes from the first sliding surface, facing the axis of rotation of the driver. The second sliding surface may be designed as a lateral surface of a ball-layer-shaped sliding portion of the driver, wherein at least one groove is formed in the second sliding surface.

It is particularly advantageous if the at least one rib and the associated groove contact each other linearly in the direction of rotation of the cleaning roller. The provision of a linear contact between the groove and the rib simplifies the assembly of cleaning roller and driver, because this reduces the risk that rib and groove tilt each other.

It can be provided that the mutually remote side surfaces of the at least one rib and the mutually facing side surfaces of the associated groove are each inclined at an angle to each other, wherein the inclination angle of the side surfaces of the ribs is greater than the inclination angle of the side surfaces of the groove. In this case, the angle of inclination is understood to mean the angle which the respective side surfaces of the ribs or of the groove form relative to one another.

Preferably, the axis of rotation facing end surface of the at least one rib is inclined to the bottom surface of the associated groove. This has the consequence that also between the bottom surface of the groove and the end face of the rib A 4 177 c

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if necessary forms a linear contact. It is particularly advantageous, however, if the bottom surface of the groove has a distance from the end face of the rib, so that the end face and bottom face do not touch during the rotational movement of the cleaning roller.

For storage of the cleaning roller on its side facing away from the driver second end face so far no details have been made. In a particularly preferred embodiment of the floor cleaning device according to the invention, the cleaning roller is rotatably held on its end remote from the driver on a bearing plate which is releasably connected on or held in the housing and together with the cleaning roller via the cleaning opening the housing removable and inserted into the housing. In such an embodiment, the bearing plate can be removed together with the bearing plate adjacent end portion of the cleaning roller through the cleaning opening to the housing. Thus, the replacement of the cleaning roller for the user is particularly simple, since he first grab the bearing plate together with this end facing the cleaning roller while maintaining the engagement between the cleaning roller and driver and then can separate them from the driver. He can then separate the bearing plate from the removed cleaning roller to then connect, for example, a second cleaning roller with the bearing plate and then first with obliquely aligned to the axis of rotation of the driver aligned longitudinal axis on the driver and in a final step, the bearing plate together with the cleaning roller in the Can introduce housing. A 4 177 c

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To fix the bearing plate within the housing, a releasable locking connection can be used. This has the advantage that losable fasteners for the bearing plate can be omitted.

It is particularly favorable if the end shield is held displaceably on a support wall, for example a housing wall. The displaceable mounting of the endshield simplifies, in particular, the insertion of the endshield into the housing.

Preferably, the bearing plate comprises a bearing plate on which a bearing hub is held resiliently in the longitudinal direction of the cleaning roller, wherein the cleaning roller is rotatably mounted on the bearing hub. The resilient mounting of the bearing hub ensures in a structurally simple manner that it can be moved together with the cleaning roller during removal of the bearing plate in the longitudinal direction of the cleaning roller. The resilient mounting of the bearing hub also has the advantage that in the axial direction tolerances can be compensated in a simple manner. In addition, over the resilient bearing hub from the bearing plate an axially, that is aligned in the longitudinal direction of the cleaning roller bias on the cleaning roller to thereby keep the axial clearance of the cleaning roller low.

In an advantageous embodiment, the bearing hub is connected by means of an elastically deformable connecting part with the bearing plate. Bearing hub, connecting part and bearing plate can form a one-piece plastic molding. A 4 177 c

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It is particularly favorable if the connecting part comprises a plurality of elastically deformable spokes. Preferably three equiangularly spaced spokes are used.

As mentioned above, the floor cleaning device can form a sweeping device by the cleaning roller is designed as a brush roller. The drive of the brush roller can be effected by means of an electric motor surrounded by the housing.

The following description of a preferred embodiment of the invention serves in conjunction with the drawings for further explanation. Show it:

Figure 1: a perspective view of a floor cleaning device when replacing a cleaning roller;

Figure 2 is a schematic representation of the interaction of the cleaning roller with a driver;

Figure 3 is a sectional view of an end face of the attached on the driver cleaning roller in its operating position and

Figure 4 is a sectional view corresponding to Figure 3 when replacing the cleaning roller. A 4 177 c

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In the drawing, a floor cleaning device in the form of a sweeping device 10 is shown schematically with a two-part housing 11, which comprises a domed housing upper part 12 and a frame-shaped housing lower part 13. The housing 11 receives a cleaning roller in the form of a brush roller 15, which can be set by a known and in Figure 2 roughly schematically illustrated motor 16 via a belt drive 17 in rotation.

The sweeping device 10 also has a dirt collecting container 18, the interior of which communicates with the interior of the housing 11 via a dirt entry opening, not shown in the drawing, which is known per se.

By means of the rotatably drivable brush roller 15 can be picked up by a floor surface to be cleaned dirt and transferred via the dirt inlet opening into the dirt collecting 18. To empty the collecting container 18 can be separated from the housing 11.

The upper housing part 12 has a cross-sectionally approximately circularly curved ceiling wall 21 and a first side wall 22 and a parallel thereto extending second side wall 23. In the second side wall 23, a receptacle 25 is formed, which receives a key-like actuator 26. A 4 177 c

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On the upper side of the ceiling wall 21, a handle 28 is articulated for guiding the sweeping device 10 along a floor surface to be cleaned.

The lower housing part 13 is latched to the upper housing part 12 and surrounds the brush roller 15 in the circumferential direction. It has a first side wall 31 and a second side wall 32, which are integrally connected to one another via an end wall 33 and a threshold 34. The lower housing part 13 defines on the underside a cleaning opening 36 which is penetrated by bristles 37 of the brush roller 15, so that dirt can be taken up by means of the bristles 37 from the floor surface to be cleaned and transferred via the threshold 34 into the dirt collecting container 18.

The brush roller 15 is mounted on both sides within the housing 11. For this purpose, a first bearing part in the form of a driver 40 and a second bearing part in the form of a bearing plate 42 are used. The driver 40 is designed like a disk and rotatably connected by means of a connecting screw 44 with a rotatably mounted on a support plate 45 pulley 47 which is coupled via a drive belt 48 with a traction sheave 49. The traction sheave 49 is held against rotation on a motor shaft 50. The support plate 45 is arranged on the inside on the first side wall 22 of the upper housing part 12 and the first side wall 31 of the lower housing part 13.

The disc-shaped carrier 40 is located with its side facing away from the brush roller 15 back 52 at one of the brush roller 15 facing the front side of the pulley 47. Adjacent to the pulley 47, the driver 40 has a ball-layer-shaped sliding portion 54, to which in A 4 177 c

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Direction of the brush roller 15 a frusto-conical guide portion 46 connects. The lateral surface of the sliding portion 54 forms a sliding surface 55 of the driver 40, and the lateral surface of the guide portion 56 defines a guide surface 57 of the driver 40. On the guide surface 57, the brush roller 15 is adjacent to a parallel to the rear wall 52 extending end wall 59 with a central recess 60, which rotatably receives the head of the connecting screw 44.

In the sliding surface 55 and the guide surface 57 four evenly spaced apart, in the region of the end wall 59 open grooves 61, 62, 63, 64 are formed. The grooves 61 to 64 are configured identically and each have two mutually facing side surfaces 66, 67 and a bottom surface 68 and an end surface 69.

The brush roller 15 comprises a cylindrical bristle carrier 72, from which the bristles 37 protrude outwards and which carries a flange 74 on its first end face 73 facing the driver. In the region of the first end face 73, the bristle carrier 72 has a frustoconical driving recess 76 with a bottom wall 77 and a conical peripheral wall 78 which widens in the direction of the driver 40 and forms a sliding surface 79.

Of the peripheral wall 78 are four ribs 81, 82, 83, 84 radially inwardly in the direction of a longitudinal axis 86 of the driver 40. The ribs 81 to 84 are arranged at a uniform angular distance from each other and each associated with a groove 61 to 64. They each have two facing away from each other A 4 177 c

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tenflächen 88, 89 and one of the longitudinal axis 86 facing end face 90 and a free end surface 91st

The side surfaces 66 and 67 of the grooves 61 to 64 are each inclined to each other such that the width of the grooves 61 to 64 in the circumferential direction of the driver 40 extends continuously from the bottom surface 68 in the direction of the sliding surface 55 and the guide surface 57. The inclination angle α between the two side surfaces 66 and 67 is preferably at most about 27 °.

The side surfaces 88 and 89 of the ribs 81 to 84 are also aligned obliquely to each other such that the width of the ribs 81 to 84 in the circumferential direction of the driving recess 76, starting from the peripheral wall 78 in the direction of the end face 90 continuously narrows. The inclination angle β between the two side surfaces 88, 89 is preferably at least about 30 °.

The cone angle γ of the peripheral wall 78 and thus also the sliding surface 79 with respect to the longitudinal axis 86 of the brush roller 15 is preferably about 15 °, and also the end faces 90 of the ribs 81 to 84 are inclined at a corresponding angle γ of about 15 ° to the longitudinal axis 86 ,

The bottom surfaces 68 of the grooves 61 to 64 are inclined to the axis of rotation 93 of the driver 40, namely, the inclination angle δ of the bottom surfaces 86 is about 13 °. A 4 177 c

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As is clear in particular from Figures 3 and 4, the brush roller 15 can be placed with its first end face 73 on the driver 40, wherein the ribs 81 to 84 each engage with a groove 61 to 64 and the sliding surface 79 of the driving recess 76th the sliding surface 55 of the sliding portion 54 is linearly contacted. The contact line between the two sliding surfaces 55 and 79 extends in a direction perpendicular to the longitudinal axis 86 of the brush roller 15 extending plane. In the axial direction, that is, in the direction of the longitudinal axis 86 of the brush roller 15, forces between the driver 40 and the brush roller 15 are transmitted only over the line of contact of the two sliding surfaces 55 and 79, because in the operating position of the brush roller 15, as shown in FIG is shown, in which the longitudinal axis 86 of the brush roller 15 is aligned colinearly to the axis of rotation 93 of the driver 40, the end faces 90 of the ribs 81 to 84 spaced from the bottom surfaces 68 of the grooves 61 to 64 and also the free end surfaces 91 of the ribs 81 to 84 are spaced from the end surfaces 69 of the grooves 61 to 64. This becomes clear from FIG.

The rotational movement of the driver 40 can be transmitted via the ribs 81 to 84 and grooves 61 to 64 on the brush roller 15, here arises between the side surfaces 66, 67 of the grooves 61 to 64 and the side surfaces 88, 89 of the ribs 81 to 84 only a line-shaped contact, since the inclination angle α of the side surfaces 66, 67 is smaller than the inclination angle ß of the side surfaces 88, 89th

Due to the design of the sliding surface 55 in the form of the shell of a spherical disk and the embodiment of the sliding surface 79 in the form of the shell of a A 4 177 c

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Truncated cone ensures that even when aligning the driver 40 aligned obliquely to the axis of rotation 93 longitudinal axis 86, as shown in Figure 4, a line contact between the sliding surfaces 55 and 79 is ensured and the sliding surfaces 55, 79 while maintaining the linienförmi- gene Contact can slide along each other when the brush roller 15 is pivoted into a position aligned with the axis of rotation 93 of the driver 40 position.

With its first end face 73 facing away from the second end face 96, the brush roller 15 is rotatably mounted on the bearing plate 42. This comprises a bearing plate 99 with a central recess 100, in which over three longitudinally of the brush roller 15 resilient spokes 101, 102, 103, a bearing hub 104 is resiliently held. At the bearing hub 104, the brush roller 15 is rotatably mounted.

The bearing plate 99 has on its side facing away from the brush roller 15 two guide grooves 108, 109, in the guide rails 111, 112 dive, which are integrally formed on the second side walls 23, 32 of the upper housing part 12 and the lower housing part 13. On the upper side, the bearing plate 99 carries an elastically deformable latching hook 114, which interacts with a locking projection 115 which is integrally formed on the second side wall 23 of the housing upper part 12.

By means of the guide grooves 108, 109 and the guide rails 111, 112 and the latching hook 114 and the associated latching projection 115, the bearing plate 42 on the inside of the second side walls 23, 32 slidably A 4 177 c

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and held latched with the housing 11. To release the locking connection between the housing 11 and the bearing plate 42, the actuator 26 is used, the underside, the bearing plate 42 facing two wedge-shaped ejector 117, 118 carries, with the help of the locking connection between the latching hook and the locking projection 115 released by the user can be by pressing the actuator 26 down in the direction of the bearing plate 42. After releasing the latching connection, the bearing plate 42 is pushed by the actuator 26 along the guide rails 111, 112 so far down until it together with the bearing plate 42 adjacent end portion of the brush roller 15 so far outwardly beyond the cleaning port 36 that it is the user can be taken. This can then separate the brush roller 15 from the driver 40 and disconnect the connection with the bearing hub 104 of the bearing plate 42. The brush roller 15 can thus be replaced in a simple manner.

The insertion of the brush roller 15 in the housing 11 also designed very easy. For this purpose, the user can first attach the brush roller 15 to the bearing hub 104, for example via a known per se and therefore not shown in the drawing snap connection. Then he can place the brush roller 15 with obliquely to the axis of rotation 93 of the driver 40 aligned longitudinal axis 86 on the driver 40 and then the bearing plate 42 on the inside of the second side walls 23, 32 along up in the direction of the actuator 26, so that the latching hook 114 engages behind the locking projection 115 and thus the bearing plate 42 is locked to the housing. When inserting the bearing plate 42 in the housing 11, the brush roller 15 with an increasing spring force A 4 177 c

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the spokes 101, 102 and 103 applied, by means of which the axial play of the brush roller 15 is limited.

Claims

A 4 177 c10. December 2004 c-299P ATENTANSPR O CHE

1. floor cleaning device having a bottom side a cleaning opening (36) having housing (11) and a removable cleaning roller (15) adjacent to the cleaning opening (36) is rotatably mounted in the housing (11) and at a first end face (73) with a rotatably driven driver (40) releasably engages and obliquely to the axis of rotation (93) of the driver (40) aligned longitudinal axis (86) with the driver (40) engageable and collinear to the axis of rotation (83) of the driver (40) alignable is, characterized in that the driver (40) and the cleaning roller (15) linearly abutting sliding surfaces (55, 79) which slide when replacing the cleaning roller (15) along each other.

2. Floor cleaning device according to claim 1, characterized in that a first sliding surface (55) forms the lateral surface of a truncated cone (78) and one with the first sliding surface (55) cooperating second sliding surface (79), the lateral surface of a spherical layer (54).

3. Floor cleaning device according to claim 2, characterized in that the first sliding surface (55) on the driver (40) and the second sliding surface (79) on the cleaning roller (15) is arranged. A 4 177 c

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4. Floor cleaning appliance according to claim 2 or 3, characterized in that adjoins the first and / or the second sliding surface (55, 79) has a conical guide surface (57).

5. Floor cleaning appliance according to one of the preceding claims, characterized in that the cleaning roller (15) has a front end receiving recess (76) which can be placed on the driver (40) to form a rotationally fixed connection.

6. Floor cleaning appliance according to claim 5, characterized in that the driving recess (76) is frustoconical and that the driver (40) has a spherical layer sliding portion (54).

7. Floor cleaning appliance according to claim 6, characterized in that in the direction of the cleaning roller (15) to the sliding portion (54) of the driver (40) adjoins a frusto-conical guide portion (56).

8. floor cleaning device according to claim 5, 6 or 7, characterized in that the driver (40) rotatably connected to a rotatably mounted on a support wall (45) rotatably mounted part (47) via transmission means (17) with a motor (16) is coupled.

9. Floor cleaning device according to claim 8, characterized in that the driver (40) is configured like a disk with an end face (52) on the rotary member (47). A 4 177 c

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10. Floor cleaning appliance according to one of the preceding claims, characterized in that the driver (40) and the cleaning roller (15) via at least one of the axis of rotation (93) of the driver (40) facing rib (81, 82, 83, 84) and a the rib (81, 82, 83, 84) receiving groove (61, 62, 63, 64) engage each other, wherein the at least one rib (81, 82, 83, 84) and the associated groove (61, 62, 63, 64) project from the linearly abutting sliding surfaces (55, 79).

11. Floor cleaning appliance according to claim 10, characterized in that the at least one rib (81, 82, 83, 84) and the associated groove (61, 62, 63, 64) contact each other in the direction of rotation of the cleaning roller line.

12. Floor cleaning appliance according to claim 10 or 11, characterized in that the mutually remote side surfaces (88, 89) of the at least one rib (81, 82, 83, 84) and the mutually facing side surfaces (66, 67) of the associated groove (61 , 62, 63, 64) each at an angle (ß, α) are inclined to each other, wherein the inclination angle (ß) of the side surfaces (88, 89) of the ribs (81, 82, 83, 84) is greater than the inclination angle ( α) of the side surfaces (66, 67) of the groove (61, 62, 63, 64).

13. Floor cleaning appliance according to claim 10, 11 or 12, characterized in that the axis of rotation (93) of the driver (40) facing A 4 177 c

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End face (90) of the at least one rib (81, 82, 83, 84) to the bottom surface (68) of the associated groove (61, 62, 63, 64) is inclined.

14. floor cleaning appliance according to one of the preceding claims, characterized in that the cleaning roller (15) on its the driver (40) facing away from the second end face (96) is rotatably supported on a bearing plate (42) which is detachably connectable on or in the housing (11 ) and together with the cleaning roller (15) via the cleaning opening (36) the housing (11) can be removed and inserted into the housing (11).

15. Floor cleaning device according to claim 14, characterized in that the bearing plate (42) on a support wall (23, 32) is slidably held.

16. Floor cleaning device according to claim 14 or 15, characterized in that the bearing plate (42) comprises a bearing plate (99) on which a bearing hub (104) in the longitudinal direction (86) of the cleaning roller (15) is resiliently supported, wherein the cleaning roller ( 15) is rotatably mounted on the bearing hub (104).

17. Floor cleaning device according to claim 16, characterized in that the bearing hub (104) by means of an elastically deformable connection part (101, 102, 103) with the bearing plate (99) is connected. A 4 177 c

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18, floor cleaning device according to claim 17, characterized in that the connecting part comprises a plurality of elastically deformable spokes (101, 102, 103).