EP3426121B1 - Surface cleaning machine - Google Patents

Description

The invention relates to a surface cleaning machine, comprising a cleaning head with a driven cleaning roller unit with an axis of rotation, wherein in a cleaning operation the surface cleaning machine is only supported on a surface to be cleaned via the cleaning roller unit, and a drive motor for the cleaning roller unit.

The U.S. 4,875,246 discloses a soil treatment device comprising a cylindrical roller and drive means for rotating the roller about an axis. A motor is arranged inside the roller.

The DE 20 2009 013 434 U1 discloses a floor cleaning device having a brush which is rotatable about an axis of rotation and having a cover with a cover surface which faces the axis of rotation. The cover surface is provided with a plurality of ribs, the ribs forming fluid channels therebetween for transporting fluid to drains provided at lower ends of the fluid channels.

From the WO 2010/041185 A1 a surface cleaning machine with rotating brushes is known.

From the US 7,665,174 B2 a cleaning head for a floor cleaning machine is known.

From the U.S. 4,173,054 a floor cleaner is known which comprises a handle, a main body, a roller mechanism with a roller with a cleaning belt, a scraper and a dirty fluid receptacle.

From the WO 2013/106762 A2 a surface cleaning machine with a cleaning roller and a drive unit for driving the cleaning roller is known. A dirt bowl is provided into which the cleaning roller sweeps dirt as it rotates. The dirt tray can be opened.

From the US 7,921,497 B2 a floor scrubbing device is known which is manually operated and comprises a drive roller which is coupled to a scrubbing roller.

From the not pre-published registrations PCT / EP2015 / 073275 , PCT / EP2015 / 072929 , PCT / EP2015 / 073529 , PCT / EP2015 / 073116 , PCT / EP2015 / 073478 surface cleaning machines are known. From the not pre-published PCT / EP2015 / 073315 a surface cleaning machine is also known.

The invention is based on the object of providing a surface cleaning machine of the type mentioned at the outset which delivers optimized cleaning results with ease of use.

This object is achieved according to the invention in the surface cleaning machine mentioned at the beginning by a dirty fluid tank device which is detachably arranged on the cleaning head.

The fact that the surface cleaning machine is only supported on a surface to be cleaned via the cleaning roller unit results in a relatively simple construction of the surface cleaning machine which can be implemented with a low weight.

The cleaning roller unit is a one-piece or multi-part cleaning roller with a single axis of rotation. In the case of a multi-part cleaning roller unit, all sub-units have the same coaxial axis of rotation and in cleaning operation all sub-units are rotated around the same axis of rotation in the same direction of rotation at the same rotational speed and the drive motor drives all sub-units.

Furthermore, cleaning can then also take place in areas that are difficult to access, since the space requirement for the cleaning head can be kept small. The driven cleaning roller unit also acts as a support device; as a result, no further driving elements such as wheels or the like have to be provided.

A removable dirty fluid tank device on the cleaning head allows the path for dirty fluid from the cleaning roller unit to the Keep the dirty fluid tank device small so that simple coupling is possible.

As the dirty fluid tank device can be removed from the cleaning head, it can be emptied and also cleaned in a simple manner. It can hold a large amount of dirty fluid including a liquid. In particular, the dirty fluid tank device can be removed as a whole from the cleaning head or inserted into it as a whole, so that a high degree of filling for the dirty fluid tank device can also be achieved with liquid.

It is even possible to implement a coupling of dirty fluid from the cleaning roller unit to the dirty fluid tank device without a suction fan or a suction fan can be provided for support, which has a relatively low power requirement and therefore a relatively low energy requirement.

The surface cleaning machine can thus be operated in an energy-saving manner. This in turn makes it possible to supply the surface cleaning machine and in particular the drive motor with a preferably rechargeable battery device with electrical power. The surface cleaning machine can thus be operated independently of the mains.

It is favorable if an axis of longitudinal extent of the dirty fluid tank device is oriented parallel to the (in particular single) axis of rotation of the cleaning roller unit. The longitudinal axis of the dirty fluid tank device runs between a first end face and a second opposite end face of the dirty fluid tank device. It specifies the longest extension of the dirty fluid tank device. This results in a space-saving arrangement of the dirty fluid tank device on the cleaning head.

It is also advantageous if a motor axis of the drive motor is oriented transversely and in particular perpendicular to an axis of longitudinal extent of the dirty fluid tank device. The motor axis of the drive motor corresponds to a rotor axis of the drive motor. The transverse orientation to the longitudinal axis of the dirty fluid tank device results in a space-saving structure.

It is particularly advantageous if the dirty fluid tank device is arranged between the cleaning roller unit and the drive motor. This results in a short coupling path for coupling dirty fluid starting from the cleaning roller unit into the dirty fluid tank device. As a result, in turn, it is sufficient to use a suction fan with a relatively low power for sucking off dirty fluid, or a suction fan-free design is possible.

In one embodiment, a transmission device for torque transmission is provided, which is arranged between the drive motor and the cleaning roller unit, the dirty fluid tank device having an upper side and a lower side, the lower side facing a cleaning roller holder of the cleaning roller unit and the upper side facing away from the lower side, and the Gear device is passed on the bottom or on the top of the dirty fluid tank device. The gear mechanism ensures the transmission of torque from the drive motor to the cleaning roller unit. The cleaning roller unit is positioned at a distance from the drive motor. The transmission device ensures, in particular, a speed reduction, torque deflection and, if necessary, a bridging of distances. By guiding the transmission device past the underside or top side of the dirty fluid tank device, a simple, compact structure results. In principle, it is also possible for the transmission device to be passed through a through opening in the dirty fluid tank device. When the transmission device is guided past on the underside or on the upper side, the result is a comparison to this end, simplified removability of the dirty fluid tank device from the cleaning head and a simplified design of the dirty fluid tank device.

In one embodiment, the dirty fluid tank device has a recess in which at least a partial area of the gear device is positioned when the dirty fluid tank device is fixed to the cleaning head. The corresponding free space in the recess provides a space in which the transmission device can be positioned. This results in an optimized adaptation of the geometric shape of the dirty fluid tank device to the cleaning head.

In one embodiment, a device body is provided on which the cleaning head is arranged, with at least one of the following devices being positioned on the device body: a tank device for cleaning liquid; valve means for supplying cleaning liquid to the cleaning head; a battery device for the drive motor; a holding rod device for holding and / or guiding the surface cleaning machine; a filter device for cleaning liquid; at least partially the drive motor. This results in a compact structure. In particular, elements of the surface cleaning machine that are relatively heavy, such as the drive motor, can be positioned far below in the vicinity of the cleaning head. Furthermore, for example, a removable tank device for cleaning liquid can be positioned on the device body. A valve device for supplying cleaning fluid to the cleaning head and also a filter device for the cleaning fluid can be positioned on the device body in a protected manner in the housing. Furthermore, the battery device can be optimally positioned, in particular if the drive motor itself is arranged on the device body. It can also be provided that the drive motor is at least partially positioned in the device body. For example, the device body is used to "anchor" the drive motor to the surface cleaning machine.

It is favorable if the drive motor is arranged at least partially between the device body and the cleaning head, wherein it is in particular arranged at least partially in the device body. In this way, for example, a battery device can be arranged on the device body in an optimized manner. Furthermore, a torque transmission from the drive motor to the cleaning roller unit on the cleaning head can be implemented in a simple manner. The drive motor can be arranged relatively far below (based on proper operation with the cleaning roller unit supported on the surface to be cleaned) so that it is easy to operate. With such an arrangement, pivotability between the cleaning head and the device body can also be implemented in a simple manner.

It is favorable if the cleaning head can be pivoted about a pivot axis relative to the drive motor and / or the device body, the pivot axis being oriented in particular parallel or coaxially to a motor axis of the drive motor. This results in expanded operating options; the access to spatially confined areas of the surface to be cleaned is improved, since the device body can be repositioned in a manner adapted to the cleaning head. A corresponding pivot bearing can be formed in a simple manner by, for example, encapsulating the drive motor as an inner sleeve and an outer sleeve arranged on the device body in such a way that a pivot bearing is implemented.

In one embodiment, a cleaning roller holder on which the cleaning roller unit is positioned has a receiving chamber with a receiving space for the dirty fluid tank device. The receiving chamber can be designed with multiple chambers and the receiving space can comprise several sub-spaces. Basically, subspaces can be fluidically connected to one another or be fluidically separated from one another.

In particular, the receiving chamber is assigned a fixing device, by means of which the dirty fluid tank device can be fixed to the receiving chamber, the fixing device for the removability of the dirty fluid tank device being designed to be detachable from the cleaning head, and in particular the fixing device being designed so that the dirty fluid tank device on the receiving chamber is in a form-fitting manner Holding position is held. In this way, the dirty fluid tank device can be fixed to the receiving chamber in a simple manner. Furthermore, the dirty fluid tank device can be removed in a simple manner in order to empty it and, if necessary, to clean it. Furthermore, the fixing device can be designed in such a way that the dirty fluid tank device is positioned with an inlet opening in a defined manner relative to the cleaning roller unit. As a result, in particular a stripping guide device can be positioned in a defined manner relative to the cleaning roller unit.

In a structurally simple embodiment, the fixing device comprises or is at least one pivotable flap. By means of the pivotable flap, the receiving chamber can be released in a simple manner in such a way that the dirty fluid tank device can be inserted or removed. The flap, when it acts on the dirty fluid tank device, can also secure a holding position of the dirty fluid tank device. Furthermore, the flap can be designed in such a way that it exerts a certain prestress in order to position the dirty fluid tank device in a defined manner on the receiving chamber, in particular in order to position an inlet opening of the dirty fluid tank device and / or possibly a scraper guide device in a defined manner relative to the cleaning roller unit.

A pivot axis of the at least one flap is advantageously aligned at least approximately parallel to an axis of rotation of the cleaning roller unit. This results in a simple constructive one Construction. The dirty fluid tank device can be easily removed and reinserted.

It is then advantageous if the at least one flap acts on an upper side of the dirty fluid tank device which faces away from an underside, the lower side of the dirty fluid tank device facing a bottom of the receiving chamber when the dirty fluid tank device is fixed to the cleaning head. A holding position of the dirty fluid tank device on the receiving chamber can thereby be secured in a simple manner. A defined positioning can also be achieved.

It is then advantageous if the at least one flap is designed as a hold-down device which positions the dirty fluid tank device in a defined manner in relation to the cleaning roller unit and / or positions it in the receiving space and in particular presses the dirty fluid tank device in a holding position against a bottom of the receiving chamber. As a result, the dirty fluid tank device can be removed or reinserted in a simple manner for an operator, and automatic positioning can be achieved, so to speak; the operator does not have to worry about the exact positioning.

For example, the at least one flap is spring-loaded and / or designed to be elastic in such a way that the dirty fluid tank device is held in the receiving space with a pretension. This bias ensures that the inlet opening of the dirty fluid tank device is in a defined position relative to the cleaning roller unit.

In a structurally simple embodiment, at least one recess is arranged on the upper side of the dirty fluid tank device and the at least one flap has at least one counter element for dipping into the at least one recess. This makes it possible, in particular, to block the mobility of the Reach dirty fluid tank assembly on the receiving chamber in a take-out direction.

It is then also favorable if the at least one recess has at least one undercut and the at least one counter-element has a locking element adapted to the at least one undercut, which, when at least one flap is closed, blocks mobility of the dirty fluid tank device in a direction away from a bottom of the receiving chamber . A form fit can thereby be achieved, which ensures that the dirty fluid tank device does not fall out in the holding position. Furthermore, positioning of the dirty fluid tank device relative to the cleaning roller unit can thereby be achieved in a simple manner.

In particular, the receiving chamber and the dirty fluid tank device are designed to be matched to one another so that in a holding position of the dirty fluid tank device on the receiving chamber, mobility of the dirty fluid tank device transversely to a perpendicular to a bottom of the receiving chamber is blocked. This results in a fixation in a simple manner. The floor then ensures that the mobility is blocked parallel to the vertical of the floor and the flap ensures that the movement is blocked in the opposite direction.

In one embodiment, the dirty fluid tank device has one or more hinged covers. By opening the hinged cover, the dirty fluid tank device can be emptied and, if necessary, it can be cleaned in a simple manner. The hinged lid in particular forms an upper side of the dirty fluid tank device, on which the at least one flap of the fixing device can act.

In one embodiment, the dirty fluid tank device is designed as a unit. This can include one chamber or several chambers. It can be removed as a whole from the cleaning head or inserted into it. In principle, it is also possible that the dirty fluid tank device has separate subunits which can be individually removed from the cleaning head or can be used on it.

In one embodiment, the cleaning roller unit is designed in two parts (is a two-part cleaning roller) with a first part and a second part, a first chamber of the dirty fluid tank device being assigned to the first part of the cleaning roller unit and a second chamber of the dirty fluid tank device being assigned to the second part of the cleaning roller unit, and in particular the drive motor acts on a central area which lies between the first part and the second part. The middle area is, for example, the middle area of a wave. This results in a space-saving and structurally simple design for the torque transmission from the drive motor to the cleaning roller unit with the (precisely one) axis of rotation. In particular, the drive motor can thereby be positioned in such a way that its motor axis lies transversely to the axis of rotation of the cleaning roller unit.

It is favorable if a scraper guide device for dirty fluid is provided, which acts on the cleaning roller unit and which is arranged at an inlet opening of the dirty fluid tank device. The stripping guide device allows dirt to be detached from the cleaning roller unit and the detached dirt can in particular be coupled into the dirt fluid tank device via the inlet opening.

In particular, the wiping guide device is arranged and designed in such a way that dirty fluid which is carried along by the cleaning roller unit is detached from the cleaning roller unit by being wiped off and is directed to the inlet opening of the dirty fluid tank device. The coupling of dirty fluid at the inlet opening into the dirty fluid tank device can take place at least partially via an impact effect, also by the action of the centrifugal force. It can be at least partially Dirty fluid are thrown into the dirty fluid tank device via the scraper guide device at the inlet mouth.

It is particularly advantageous if the scraper guide device is designed in such a way that dirty fluid is guided into the dirty fluid tank device through the scraper guide device at the inlet opening of the dirty fluid tank device without a suction fan. The stripping guide device is then arranged, in particular, directly at the inlet opening of the dirty fluid tank device. In particular, the stripping guide device itself then forms a wall of the inlet mouth. Overall, this results in a structurally simple design of the surface cleaning machine, since no suction fan with fan motor, vacuum lines and the like need to be provided. Furthermore, no separator has to be provided.

It is also advantageous if, with respect to a direction of rotation of the cleaning roller unit, the stripping guide device is arranged downstream of the inlet opening. In this way, dirty fluid can be detached from the cleaning roller unit via a wiping effect and fed into the dirty fluid tank device.

It is particularly advantageous if the stripping guide device protrudes into a set of cleaning roller unit. This allows dirty fluid to be removed from the cleaning roller unit via a wiping effect.

It is favorable if the scraper guide device is rounded or chamfered at an edge which protrudes into the facing of the cleaning roller unit and which faces the inlet opening. This results in sparing of the facing fibers. Furthermore, the rotary drive of the cleaning roller unit can be operated in an energy-saving manner.

It is then particularly favorable if the stripping guide device protrudes into the facing with a depth of at least 5% of the thickness of the facing, based on a wet facing.

In principle, it is possible for the stripping guide device to be arranged on a cleaning roller holder. In one embodiment, the wiping guide device is arranged on the dirty fluid tank device and can be removed from the cleaning head with the dirty fluid tank device. When the dirty fluid tank device is positioned at a holding position on the cleaning head, the stripping guide device is then automatically positioned in a defined “correct” manner relative to the cleaning roller unit.

In particular, the stripping guide device is formed by one or more edge elements, that is to say formed by one or more strips, which have corresponding edges which, in particular, can protrude into the trim of the cleaning roller unit. Preferably, an edge element at least partially forms a wall of the inlet mouth.

It is also advantageous if a sweeping element is arranged on the cleaning head, through which the cleaning roller unit can be fed coarse dirt to be carried along by the cleaning roller unit.

In particular, an inlet opening of the dirty fluid tank device is positioned between the scraper guide device and the sweeping element. As a result, coarse dirt, which has been fed to the cleaning roller unit via the sweeping element, can be carried along by the cleaning roller unit and stripped off at the stripping guide device.

It is particularly advantageous if a battery device and, in particular, a rechargeable battery device is provided for supplying the drive motor with electrical energy. This means that the surface cleaning machine can be operated independently of the power supply. It is easy to use.

It is also advantageous if the drive motor is arranged between the battery device and the cleaning head. This results in an optimized positioning of the battery device.

It is also advantageous if a tank device is provided for cleaning liquid. This allows the surface to be cleaned to be moistened directly or indirectly (by moistening the cleaning roller unit). The cleaning liquid is, in particular, water to which a chemical cleaning agent can be mixed. The cleaning liquid can be used to moisten dirt on the surface to be cleaned in order to obtain improved solubility.

In a structurally simple embodiment, the tank device for cleaning liquid is positioned above the cleaning roller unit in relation to the direction of gravity when the surface cleaning machine is operated in a proper cleaning mode with the cleaning roller unit placed on the surface to be cleaned. A supply of cleaning liquid to the cleaning head and in particular to the cleaning roller unit then takes place solely under the action of gravity. There is no need to provide an additional pump for pumping cleaning fluid.

It is favorable if an inlet opening of the dirty fluid tank device has a longitudinal direction which is oriented parallel to an axis of rotation of the cleaning roller unit. This allows dirty fluid to be coupled into the dirty fluid tank device over a large length range.

The surface cleaning machine is designed in particular as a hand-operated or hand-operated surface cleaning machine. As a result of the support via the cleaning roller unit on the surface to be cleaned, an operator can hold the surface cleaning machine at an end facing away from the cleaning head (so that it cannot tip over) and guide it on the surface to be cleaned.

Figur 1

eine perspektivische Darstellung eines Ausführungsbeispiels einer erfindungsgemäßen Flächen-Reinigungsmaschine;

Figur 2

eine weitere perspektivische Darstellung eines Reinigungskopfs der Flächen-Reinigungsmaschine gemäß Figur 1, wobei ein Anschluss an einen Gerätekörper angedeutet ist;

Figur 3

eine Seitenansicht des Reinigungskopfs gemäß Figur 2 mit abgenommener Schmutzfluidtankeinrichtung;

Figur 4

eine Teilschnittansicht in der Ebene E gemäß Figur 1;

Figur 5

eine vergrößerte Darstellung des Bereichs A gemäß Figur 4 mit fixierter Schmutzfluidtankeinrichtung;

Figur 6

die gleiche Ansicht wie Figur 5, wobei eine Fixierungseinrichtung in einer solchen Stellung ist, dass die Schmutzfluidtankeinrichtung entnehmbar ist;

Figur 7

die gleiche Ansicht wie Figur 5 in einer Zwischenstellung;

Figur 8

eine perspektivische Ansicht eines Ausführungsbeispiels einer Schmutzfluidtankeinrichtung;

Figur 9

eine Ansicht der Schmutzfluidtankeinrichtung gemäß Figur 8 in der Richtung B; und

Figur 10

eine Seitenansicht der Schmutzfluidtankeinrichtung gemäß Figur 8 in der Richtung C.

The following description of preferred embodiments is used in conjunction with the drawings to explain the invention in greater detail. Show it:

Figure 1

a perspective view of an embodiment of a surface cleaning machine according to the invention;

Figure 2

a further perspective illustration of a cleaning head of the surface cleaning machine according to FIG Figure 1 , wherein a connection to a device body is indicated;

Figure 3

a side view of the cleaning head according to FIG Figure 2 with the dirty fluid tank device removed;

Figure 4

a partial sectional view in the plane E according to Figure 1 ;

Figure 5

an enlarged illustration of the area A according to Figure 4 with fixed dirty fluid tank device;

Figure 6

the same view as Figure 5 wherein a fixing device is in such a position that the dirty fluid tank device is removable;

Figure 7

the same view as Figure 5 in an intermediate position;

Figure 8

a perspective view of an embodiment of a dirty fluid tank device;

Figure 9

a view of the dirty fluid tank device according to Figure 8 in the direction B; and

Figure 10

a side view of the dirty fluid tank device according to Figure 8 in the direction of C.

An embodiment of a surface cleaning machine according to the invention, which is shown in Figure 1 is shown and in the Figures 2 to 10 is shown in partial representation and is denoted by 10, is designed in particular as a hand-held and hand-guided floor cleaning machine for hard floors.

The surface cleaning machine 10 comprises a device body 12 and a cleaning head 14. The cleaning head 14 is arranged on the device body 12.

During a cleaning process on a surface 16 to be cleaned, the surface cleaning machine 10 is supported on the surface 16 to be cleaned via a cleaning roller unit 18 and in particular a single cleaning roller unit 18. The cleaning roller unit 18 has a single axis of rotation (see below). The cleaning roller unit 18 is a cleaning roller which can be in one piece or in several pieces. In the embodiment described below, the cleaning roller unit 18 is a two-part cleaning roller.

The device body 12 has a longitudinal axis 20. The surface cleaning machine 10 is held or guided by a handle. For this purpose, a holding rod device 22 is seated on the device body 12.

In one embodiment, the holding rod device 22 comprises one (in particular precisely one) holding rod 24, which has a longitudinal extension parallel to the longitudinal axis 20. A handle 26, and in particular a bow-type handle, is arranged on an upper region of the holding rod device 22. An operator can hold the surface cleaning machine 10 with one hand on this handle 26 and guide it on the surface 16 to be cleaned (with the cleaning roller unit 18 supported).

The holding rod device 22 can be designed to be variable in length or fixed in length with respect to a length in the longitudinal axis 20.

The surface cleaning machine 10 is designed in terms of its dimensions so that when the cleaning roller unit 18 is supported on the surface 16 to be cleaned, an operator can comfortably carry out a cleaning process on the surface 16 to be cleaned with an angled holding arm. In particular, a length of the surface cleaning machine 10 in the longitudinal axis 20 between the cleaning roller unit 18 and the bow handle 26 is in a range between 60 cm and 130 cm.

In particular, one or more operating elements are arranged on the handle 26. For example, a switch is arranged via which the surface cleaning machine 10 can be switched on or switched off for a cleaning operation. This switch can be used to switch the operation of a drive motor 28 for rotating the cleaning roller unit 18. Furthermore, a switch for actuating a valve device 38 (see below) can be provided.

The device body 12 comprises a housing 30 in which components of the surface cleaning machine 10 are arranged in a protected manner.

A holder 32 is arranged on the housing 30. A tank device 34 for cleaning liquid (in particular water with or without an additional cleaning agent) is removably arranged on the holder 32.

A tank receptacle 36 for the tank device 34 is arranged on the holder 32 of the housing 30. A corresponding outlet of the tank device 34 can be connected to the tank receptacle 36.

A valve device 38 is positioned downstream of the tank receptacle 36 in the housing 30.

One or more fluid lines 40 lead from the valve device 38 to the cleaning head 14.

The valve device 38 has a shut-off valve via which the supply of cleaning fluid from the tank device 34 to the cleaning head 14 can be switched off. The valve device 38 can be assigned a filter device 39 for cleaning fluid. The filter device 39 is in particular connected upstream of the shut-off valve and arranged between the valve device 38 and the tank receptacle 36.

When the shut-off valve is open, cleaning liquid can flow from the tank device 34 through the fluid line or fluid lines 40 to the cleaning head 14 and act on the surface 16 to be cleaned.

For this purpose, one or more outlet openings for cleaning liquid are provided on the cleaning head 14. It is basically possible here for the outlet opening or outlet openings to be arranged in such a way that the surface 16 to be cleaned is directly exposed to cleaning fluid.

In an advantageous variant, the outlet opening or outlet openings are arranged in such a way that cleaning fluid is applied to cleaning roller unit 18 and, in particular, a trim 42 of cleaning roller unit 18. When the cleaning roller unit 18 is acted upon by cleaning liquid, the surface 16 to be cleaned is then indirectly acted upon by cleaning liquid.

The trim 42 is made in particular from a textile material.

A switch is assigned to the valve device 38, by means of which the user can set whether the shut-off valve of the valve device 38 is blocked (i.e. the inflow of cleaning fluid to the cleaning head 14 is blocked) or whether the shut-off valve is open (i.e. the inflow for Cleaning fluid is released from the tank device 34 to the cleaning head 14).

This switch can be arranged on the housing 30. In principle, it is also possible for the switch to be arranged on the handle 26.

In one embodiment, a battery device 44 for supplying electrical energy to the drive motor 28 is arranged in the housing 30. The battery device 44 is rechargeable. As a result, the surface cleaning machine 10 can be operated independently of a mains supply.

In principle, however, it is also possible for the surface cleaning machine 10 to be operated using mains electricity. A corresponding connection device for mains power is then arranged on the surface cleaning machine 10.

The battery device 44 can be detachable from the device body 12 in order to be able to carry out recharging on a corresponding charger.

It can also be provided that a corresponding charging device is integrated into the device body 12 and recharging can be carried out without removing the battery device 44 from the device body 12. Corresponding connection sockets are arranged on the holding rod 24, for example.

The drive motor 28 is an electric motor. It has a motor axis 46. The motor axis 46 is coaxial with an axis of rotation of the drive motor 28.

The drive motor 28 is seated between the cleaning head 14 and the housing 30 on the device body 12.

In one embodiment, the motor axis 46 is oriented at an angle to the longitudinal axis 20 of the device body 12 (and the support rod 24). The The angle between the motor axis 46 and the longitudinal axis 20 is, for example, in the range between 150 ° and 170 °.

In one embodiment, the cleaning head 14 is about a pivot axis 48 (see Figures 2 and 3 ) pivotable with respect to the device body 12. This pivotability is in Figure 2 indicated by the double arrow with the reference numeral 50.

In particular, the pivot axis 48 is coaxial with the motor axis 46.

In one embodiment, the drive motor 28 is arranged on an inner sleeve 52. This inner sleeve 52 preferably forms an encapsulation of the drive motor 28.

An outer sleeve 54 is firmly seated on the device body 12. The inner sleeve 52 is seated in the outer sleeve 54. The inner sleeve 52 is pivotable about the pivot axis 48 relative to the outer sleeve 54, the inner sleeve 52 being pivotably mounted in the outer sleeve 54. The inner sleeve 52 and the outer sleeve 54 form a pivot bearing 56 for the pivotability of the cleaning head 14 relative to the device body 12. The drive motor 28 is pivotable about the pivot axis 48 relative to the device body 12. Corresponding supply lines from the battery device 44 to the drive motor 28 are arranged and designed in such a way that they allow pivotability. Correspondingly, the fluid line 40 or the fluid lines 40 are designed in such a way that they allow this pivotability.

The pivot bearing 56 has a basic position which is defined, for example, in that (the only one) one axis of rotation 58 of the cleaning roller unit 18 perpendicular to the plane E according to FIG Figure 1 is oriented. A pivoting about the pivot axis 58 with respect to this basic position is expressed in an angular position of the axis of rotation 58 to the plane E.

The pivot bearing 56 is set in particular in such a way that a special expenditure of force in relation to a normal cleaning operation is necessary in order to cause the cleaning head 14 to pivot out of its basic position.

The pivotability of the cleaning head 14 about the pivot axis 48 enables improved cleaning options even in hard-to-reach places, as the device body 12 with the holding rod device 22 can be "repositioned" with respect to the surface 16 to be cleaned.

The cleaning head 14 has a cleaning roller holder 60 on which the cleaning roller unit 18 is seated such that it can rotate about the axis of rotation 58. The cleaning roller holder 60 is non-rotatably connected to the inner sleeve 52.

The cleaning roller holder 60 has a holding area 62 for the cleaning roller unit 18, and a receiving chamber 64 for a dirty fluid tank device 66 (see, for example, FIG Figure 3 ).

The receiving chamber 64 is positioned between the holding area 62 and the inner sleeve 52. The inner sleeve 52 is in particular firmly connected to an outside of the receiving chamber 64.

The cleaning roller unit 18 is coupled to the drive motor 28 in a torque-effective manner via a transmission device 68.

The transmission device 68 connects a motor shaft of the drive motor 28 (which rotates about the motor axis 46) to a shaft 70 for the cleaning roller unit 18 in a torque-effective manner.

In one exemplary embodiment, the transmission device 68 comprises a speed reducer. This is used to reduce a speed in Comparison to the speed of the motor shaft. For example, a standard electric motor has speeds on the order of 7000 revolutions per minute. The speed reducer ensures that the speed is reduced to around 400 revolutions per minute, for example.

The speed reducer can be arranged in the inner sleeve 52 or outside the inner sleeve 52 on the cleaning roller holder 60.

The speed reducer is designed as a planetary gear, for example.

The gear device 68 also has an angular gear, which ensures a torque deflection in order to bring about a drive of the cleaning roller unit 18 with the axis of rotation 58 transversely (and in particular perpendicular) to the motor axis 46. In particular, the angular gear is connected downstream of the speed reducer.

In one embodiment, the angular gear has one or more gearwheels which are non-rotatably coupled to a corresponding shaft of the speed reducer. These act on a bevel gear for angular conversion.

In one exemplary embodiment, the transmission device 68 further comprises a belt which is coupled to the angular transmission in a torque-effective manner and acts on the shaft 70. The belt bridges the distance between the shaft 70 and the angular gear and provides a speed reduction.

In one embodiment, the cleaning roller unit 18 is constructed in two parts with a first part 72 and a second part 74. The first part 72 is seated in a rotationally fixed manner on a first side of the shaft 70 and the second part 74 is in a rotationally fixed manner on a second opposite the first side of the shaft 70 Page.

The transmission device 68 is guided and coupled to the shaft 70 in an intermediate region 76 between the first part 72 and the second part 74. They have the same axis of rotation 58.

The cleaning roller unit 18 or the first part 72 and the second part 74 of the cleaning roller unit 18 have a sleeve 78 (cf. for example Figure 5 ), which is cylindrical. The trim 42 is arranged on the sleeve 78. The cleaning roller unit 18 or the first part 72 and the second part 74 are fixed to the shaft 70 via the sleeve 78.

The cleaning roller unit 18 is arranged on the cleaning head 14 in such a way that the axis of rotation 58 is oriented perpendicular to the longitudinal axis 20.

The cleaning roller unit 18 has a length along the axis of rotation 58 between a first end face 80 (which is formed on the first part 72) and a second end face 82 (which is formed on the second part 74), which is considerably greater than a corresponding width of the device body 12 perpendicular to the longitudinal axis 20. In particular, a length of the cleaning roller unit 18 between the first face 80 and the second face 82 is at least 20 cm and preferably at least 25 cm.

The receiving chamber 64 has a bottom 84 (see. For example Figure 5 ) on. A receiving chamber wall 86 is arranged on the bottom 84, oriented transversely to the latter. The receiving chamber wall 86 and the bottom 84 of the receiving chamber 64 define a receiving space 88 for the dirty fluid tank device 66.

Opposite the bottom 84, the receiving space 88 is open. The dirty fluid tank device 66 can be removed from or inserted into the receiving space 88 via a corresponding side 90. A removal direction or insertion direction 92 (cf. Figure 6 ) is in the Substantially perpendicular to the floor 84 (and perpendicular to the axis of rotation 58).

In one embodiment, the receiving chamber wall 86 has a step 96 on a wall area 94 of the receiving chamber wall 86. The wall area 94 faces the holding area 62.

The step 96 is also disposed close to the floor 84.

A fixing device 98 is assigned to the receiving chamber 64, via which the dirty fluid tank device 66 on the receiving chamber wall 86 in a holding position 100 ( Figure 5 ) is fixable. The fixation takes place in particular by form fit.

In one embodiment, the fixing device 98 comprises a flap 102 which is arranged on the cleaning head 14 so as to be pivotable about a pivot axis 104 by means of a pivot bearing 106. The pivot bearing 106 is positioned on or in the vicinity of the inner sleeve 52.

The pivot axis 104 is oriented parallel to the axis of rotation 58 of the rotary roller 18.

In the holding position 100, the flap 102 acts on the dirty fluid tank device 66 and holds it on the receiving chamber 64 in the receiving space 88.

To remove the dirty fluid tank device 66 from the cleaning head 14, starting from this holding position 100, the flap 102 can be pivoted in the direction of the device body 12 (see FIG Figure 6 , indicated by the reference numeral 108) in order to release the dirty fluid tank device 66 so that it can be removed from the receiving space 88 in the removal direction 92 on the side 90 and can be removed from the cleaning head 14.

The dirty fluid tank assembly 66 ( Figures 8 to 10 ) is designed as a unit. It has a first chamber 110 which is assigned to the first part 72 of the cleaning roller unit 18, and has a second chamber 112 which is assigned to the second part 74 of the cleaning roller unit 18.

The first chamber 110 receives dirty fluid which comes from the first part 72 of the cleaning roller unit 18, and the second chamber 112 receives dirty fluid which comes from the second part 74 of the cleaning roller unit 18.

In principle, it is possible for the first chamber 110 and the second chamber 112 to be connected to one another in a fluidically effective manner, and for example to be connected to a common drainage opening in an effective manner.

It can also be provided that the first chamber 110 and the second chamber 112 are separated from one another in a fluid-tight manner and each chamber 110, 112 has its own outlet opening.

The first chamber 110 and the second chamber 112 are spaced apart; Between the first chamber 110 and the second chamber 112, the dirty fluid tank device 66 has a recess 114. The recess 114 is arranged in a central region of the dirty fluid tank device 66 in relation to a longitudinal axis 116 of the dirty fluid tank device 66.

When the dirty fluid tank device 66 is fixed in the holding position 100 on the cleaning head 14, the longitudinal axis 116 is oriented parallel to the axis of rotation 58 of the cleaning roller unit 18.

The longitudinal axis 116 of the dirty fluid tank device 66 extends between a first outer end 118 and a second outer end 120 of the dirty fluid tank device 66, the dirty fluid tank device 66 having its greatest length dimensions between the first outer end 118 and the second outer end 120.

The recess 114 serves to lead through at least a partial area of the transmission device 68. The cleaning roller unit 18 is driven in the center. The gear device 68 bridges the distance between the drive motor 28 and the shaft 70. The recess 114 on the dirty fluid tank device 86, as it were, leaves out the space that the gear device 68 accommodates.

It can be provided that the receiving chamber 64 has a respective receiving space 88 for the first chamber 110 and the second chamber 112.

It is also possible that a common receiving space 88 is provided for the first chamber 110 and the second chamber 112.

The first chamber 110 and the second chamber 112 are connected to one another via a bridge 122, so that the dirty fluid tank device 66 forms a unit and can be removed as a whole from the cleaning head 14 or can be inserted into it.

In one embodiment, the dirty fluid tank device 66 has a cover flap 124 which is seated pivotably on the first chamber 110 and the second chamber 112 via spaced pivot bearings 126a, 126b.

The cover flap 124 can be opened in order to provide a corresponding emptying opening for the first chamber 110 and the second chamber 112 and, if necessary, to be able to clean the dirty fluid tank device 66 in an interior.

In one embodiment, which is shown in Figures 8 to 10 As shown, the first chamber 110 and the second chamber 112 are fluid-tightly separated from one another. The lid flap 124 is a common lid flap for both the first chamber 110 and the second chamber 112. By opening the lid flap 124, both the first chamber 110 and the second chamber 112 can be emptied or there is access to the first chamber 110 and the second chamber 112 is provided in order to be able to carry out a corresponding cleaning.

The lid flap can be fixed with the first chamber 110 and / or the second chamber 112 and / or the bridge 122 in such a way that when the lid flap 124 is closed, a fluid-tight dirty fluid tank device 66 (except for an inlet opening) is provided.

In principle, it is possible for the dirty fluid tank device 66 to also include mechanically separate chambers, one chamber then being assigned to the first part 72 and the second part 74 of the cleaning roller unit 18. In this case, the corresponding parts of the dirty fluid tank device must then be removed or inserted separately from the cleaning head 14.

The dirty fluid tank device 66 has an underside 128 which is formed on an outer side of the base 84 on the first chamber 110 and on the second chamber 112, respectively. It also has an upper side 130 opposite the lower side 128, which is formed on an outside of the cover flap 124.

A recess 132 (or a plurality of recesses 132) is formed on the upper side 130 of the dirty fluid tank device 66 and thus on the cover flap 124. The recess or recesses 132 are channel-shaped and have an undercut surface 134.

The flap 102 has a counter element 136 (or several counter elements 136) which serve to cooperate with the recess 132.

A locking element 138 is arranged on the counter element 136 or counter elements 136 ( Figures 5 to 7 ), which serves to cooperate with the undercut surface 134. When the counter element 136 with its locking element 138 is immersed in the recess 132 and the holding position 100 is reached, the locking element 138 rests against the undercut surface 134. As a result, the flap 102 is blocked from pivoting away from the upper side 130 of the dirty fluid tank device 66. A corresponding expenditure of force must be exerted in order to guide the locking element 138 away from the undercut surface 134.

The dirty fluid tank device 66 is positioned in relation to the flap 102 and the receiving chamber 64 such that, when the dirty fluid tank device 66 is positioned in the holding position 100 on the receiving chamber 64, the locking element 138 is immersed in the recess 132 and correspondingly rests against the undercut surface 134 and thus secures the holding position 100.

In one embodiment, the dirty fluid tank device 66 has a step 140 adapted to the step 96 (see, for example, FIG Figure 6 ) on.

When the dirty fluid tank device 66 is inserted into the receiving space 88, the receiving chamber wall 86 blocks a mobility of the dirty fluid tank device 66 in the receiving space 88 in the directions transverse to the removal / insertion direction 92.

This form-fit locking is supported by the steps 96, 140 if necessary.

The bottom 84 of the receiving chamber 64 prevents the dirty fluid tank device 66 from "diving out" when it is inserted.

When the flap 102 is closed and the locking element 138 is positioned in the recess 132 with abutment against the undercut surface 134, the mobility is locked parallel to the removal direction 92 around the holding position 100 of the dirty fluid tank device 66 on the receiving chamber 64 is secured.

The flap 102 is designed in particular as a hold-down device, which ensures a defined positioning of the dirty fluid tank device 66 in relation to the cleaning roller unit 18.

The flap 102 is in particular arranged or designed elastically in such a way that in the holding position 100 the flap 102 exerts a corresponding positioning force and, in particular, the dirty fluid tank device 66 is pressed against the bottom 84 and also the wall area 94. The pressing against the wall area 94 is also supported by the cooperation of the step 96 on the wall area 94 with the step 140 in the dirty fluid tank device 66.

It can be provided that the flap 102 is spring-supported on the pivot bearing 106, for example. Alternatively or additionally, the flap 102 can be formed, for example, on the counter element 136 in such a way that a corresponding elastic force can be exerted on the dirty fluid tank device 66.

The cleaning head 14 has a stripping guide device 142 (cf. Figure 5 ), which acts on the cleaning roller unit 18 (and thereby on the first part 72 and the second part 74) and serves to loosen dirt fluid (in particular water with dirt particles) carried along by the cleaning roller unit 18 and an inlet opening 144 of the dirt fluid tank device 66, which is fixed in the holding position 100 on the cleaning head 14, to be supplied. As a result, dirty fluid is then coupled into the dirty fluid tank device 66.

The inlet opening 144 of the dirty fluid tank device 66 is designed in the manner of a slot ( Figure 9 ). It comprises a first part 146, which is an inlet port for the first chamber 110, and comprises a second part 148, which is an inlet port for the second chamber 112.

The in Figure 9 The embodiment shown, the first part 146 and the second part 148 each have a greater length in the longitudinal axis 116 than the associated chamber 110 or 112. The dirty fluid tank device 66 has at the end of the inlet opening 144 on the first part 146 and on the second part 148 a respective wall in order to be able to supply dirt fluid collected via the first part 146 and the second part 148 of the inlet opening 144 to the first chamber 110 and the second chamber 112, respectively.

The first part 146 of the inlet opening 144 is assigned to the first part 72 of the cleaning roller unit 18. The second part 148 of the inlet opening 144 is assigned to the second part 74 of the cleaning roller unit 18. The first part 146 and the second part 148 of the inlet opening 144 are spaced apart from one another in accordance with the spacing between the first part 72 and the second part 74.

Preferably, the first part 146 and the second part 148 each have a length in the longitudinal axis 116 which corresponds at least approximately to a corresponding trimming length of the first part 72 and the second part 74 of the cleaning roller unit 18 along the axis of rotation 58.

The wiping guide device 142 is designed such that it wipes off dirty fluid from the cleaning roller unit 18 and guides it into the inlet opening 144.

It is possible that, when the cleaning roller unit 18 is rotating, a guiding effect is achieved via the action of the centrifugal force and, so to speak, dirty fluid is thrown into the dirty fluid tank device 66.

The stripping guide device 142 is spaced apart from the axis of rotation 58.

In one embodiment (see, for example Figure 5 ) the stripping guide device 142 protrudes with a depth T into the facing 42 of the cleaning roller unit 18. The depth T is in particular at least 5% of a thickness D ( Figure 5 ) of the trim 42 of the cleaning roller unit 18 based on a moist state of the trim 42.

The stripping guide device 142 is formed in particular by one or more edge elements 150. For example, a respective edge element 150 is assigned to the first part 72 and the second part 74 of the cleaning roller unit 18.

An edge element 150 is designed as a strip which correspondingly protrudes into the facing 42 of the cleaning roller unit 18 on the first part 72 and the second part 74.

The edge element 150 has a relatively small thickness, which is in particular smaller than a thickness D of the trim 42.

In one embodiment, the edge element 150 or the edge elements 150 are curved.

The stripping guide device 142 with the edge element 150 or the edge elements 150 in particular forms a wall of the inlet opening 144.

The edge element or elements 150 are formed rounded or chamfered on an edge which the inlet opening 144 faces. Thereby the fibers of the facing 42 are spared and a small force has to be overcome during the rotation of the cleaning roller unit 18. This in turn achieves an energy-saving effect. This rounding on the edge is in Figure 5 indicated by reference number 151.

In principle, it can be provided that the stripping guide device 142 is arranged on the cleaning roller holder 60.

In the exemplary embodiment shown, the stripping guide device 142 is seated on the dirty fluid tank device 66.

This has a wall 152 which, in the holding position 100, faces the wall area 94. The edge element or elements 150 are arranged on the corresponding wall 152 of the first chamber 110 and the second chamber 112.

The corresponding stripping guide device 142 is preferably arranged outside the cover flap 124 of the dirty fluid tank device 66.

In this embodiment, the wiper guide device 142 is removed from the cleaning head 14 when the dirty fluid tank device 66 is removed therefrom.

It is further provided that a cover 154 is positioned on the cleaning head 14 associated with the cleaning roller unit 18. The cover 154 is arranged downstream of the stripping guide device 142 (with the edge element or elements 150). The edge element 150 is curved in such a way that it is adapted to a corresponding curvature of the cleaning roller unit 118 with the facing 42.

In principle, the cover 154 can touch or penetrate the trim 42, the penetration preferably taking place at a shallower depth than the penetration of the stripping guide device 142 over the depth T. In one embodiment, the fluid line 40 or the fluid lines 40 open into an area 156 between the cover 154 and the stripping guide device 142. In this area, the cleaning roller unit 18 can be exposed to cleaning fluid from the tank device 34.

In particular, the area 146 has a length along the axis of rotation 58 which at least approximately corresponds to a corresponding length of the first part 72 or the second part 74 of the cleaning roller unit 18 in order to enable a uniform application of liquid to the cleaning roller unit 18 over its length.

In the exemplary embodiment shown, the cover 154 is arranged on the dirty fluid tank device 66.

It must then be ensured that a suitable coupling of the fluid line 40 or fluid lines 40 is achieved.

In relation to a direction of rotation 158 (cf. Figure 5 ) The cleaning roller unit 18 in a cleaning operation is followed by the stripping guide device 142 with its edge element 150 or its edge elements 150 of the inlet opening 144. As a result, dirty fluid, which was previously carried along by the cleaning roller unit 18 from the surface 16 to be cleaned and was transported in the direction of the stripping guide device 142, is "thrown in" via the stripping guide device 142 into the inlet opening 144 and thereby into the dirty fluid tank device 66 enables.

In one embodiment, the cleaning roller unit 18 is also assigned a sweeping element 160, which serves to feed coarse dirt to the cleaning roller unit 18. This can then be taken along with the cleaning roller unit 18.

The inlet port 144 is arranged between the scraper guide device 142 on the sweeping element 160.

In the exemplary embodiment shown, the sweeping element 160 is positioned on the cleaning roller holder 60 in the holding area 62. The sweeping element 160 is designed in such a way that it is at least in an angular position range (if the surface cleaning machine 10 is not set up too steeply) of the surface cleaning machine 10 in relation to the longitudinal axis 20 to the surface 16 to be cleaned on the surface 16 to be cleaned for the Can have a sweeping function.

The sweeping element 160 is arranged, for example, pivotably on the cleaning roller holder 60 and / or it is designed to be elastic.

In particular, the sweeping element 160 protrudes into the facing 42 of the cleaning roller unit 18. However, the facing 42 can only touch or be spaced from it.

In relation to the direction of rotation 158 of the cleaning roller unit 18, when it is driven in its rotational movement by the drive motor 28, the surface 16 to be cleaned is first followed by the sweeping element 160, then a guide area 162 of the cleaning roller holder 60, which is (hollow) cylindrical in shape and is adapted to the cleaning roller unit 18, then the inlet opening 144, then the wiper guide device 142 with the edge element (s) 150 and then the cover 154, the area 156 lying between the cover 154 and the wiper guide device 142.

In the embodiment shown, the surface cleaning machine 10 is designed without a suction fan. Dirty fluid, which is carried along by the cleaning roller unit 18, is not sucked into the dirty fluid tank device 66 by an additional suction fan, but the Stripping guide device 142 only ensures that dirty fluid is coupled into the dirty fluid tank device 66.

In principle, however, it is also possible for the coupling to be supported by an additional suction fan.

The surface cleaning machine 10 works as follows:
In a cleaning operation, the dirty fluid tank device 66 is fixed on the cleaning head 14 in the holding position 100.

For a cleaning process, the surface cleaning machine 10 is placed on the surface 16 to be cleaned solely via the cleaning roller unit 18. The drive motor 28 drives the cleaning roller unit 18 in a rotational movement about the (single) axis of rotation 58 in the direction of rotation 158.

The cleaning roller unit 18 is acted upon with cleaning fluid from the tank device 34.

Dirt on the surface 16 to be cleaned is moistened when the moistened covering 42 of the cleaning roller unit 18 acts on it in order to make it easier to remove it.

The rotation of the cleaning roller unit 18 effects a mechanical action on dirt on the surface 16 to be cleaned in order to obtain better detachability from the surface 16 to be cleaned.

Any coarse dirt can be fed to the cleaning roller unit 18 with the sweeping element 160.

Dirt fluid (dirt particles, cleaning fluid with loosened dirt) is carried along by the cleaning roller unit 18 and at the scraper guide device 142, the dirty fluid is detached from the cleaning roller unit 18 and (inter alia under the action of centrifugal force) passed into the inlet opening 144 and from there into the dirty fluid tank device 66. The stripping guide device 142 ensures that dirty fluid is removed from the trimming 42 of FIG Cleaning roller unit 18.

The coupling of dirty fluid into the dirty fluid tank device 66 takes place in particular without a suction fan.

The dirty fluid tank assembly 66 is removably positioned on the cleaning head 14.

The flap 102 ensures that the holding position 100 is secured. In the holding position 100, the inlet opening 144 of the dirty fluid tank device 66 is also oriented in relation to the stripping guide device 142 with respect to the cleaning roller unit 18 so that the corresponding release function and coupling function as described above is achieved.

With its function as a hold-down device, the flap 102 ensures that the edge element 150 or the edge elements 150 are correspondingly pressed into the facing 42 to the depth T in order to achieve an optimal detachment function by stripping.

In particular, the stripping guide device 142 is arranged on the dirty fluid tank device 66 and can be removed from the cleaning head 14 with the latter.

The flap 102 presses with its counter element 136 and the locking element 138 arranged thereon on the upper side 130 of the dirty fluid tank device 66 and thereby secures the holding position in which the above-described relative positioning of the stripping guide device 142 to the cleaning roller unit 18 is achieved.

A form-fitting mounting of the dirty fluid tank device 66 on the receiving chamber 64 in the holding position 100 is provided.

To remove the dirty fluid tank assembly 66 ( Figure 3 , Figures 6 , 7th ) the flap 102 is opened. It is pivoted in the direction of the device body 12. In order to guide the locking element 138 out of the recess 132 with the undercut surface 134, a corresponding elastic deformation of the counter element 136 must be carried out.

With flap 102 fully open ( Figure 6 ) the dirty fluid tank 66 can then be removed (cf. Figure 3 ).

By opening the cover flap 124 of the dirty fluid tank device 66, the latter can be emptied and, if necessary, cleaned, for example by rinsing.

The dirty fluid tank device 66 has a capacity of approximately 150 ml, for example.

The surface cleaning machine 10 has a relatively low energy requirement, since no suction fan has to be provided and dirty fluid is coupled directly from the cleaning roller unit 18 into the dirty fluid tank device 66 with a “minimized path”.

The surface cleaning machine 10 can therefore be operated in an optimized manner with a rechargeable battery device 44.

With the surface cleaning machine according to the invention, hard floors can be wet-cleaned with a high degree of automation. The effort required for wiping is reduced or eliminated by the mechanical support provided by the driven rotating roller 18. The moistening of the cleaning roller unit 18 enables one Operator to perform a cleaning process without coming into contact with dirty fluid.

In addition, in a cleaning operation, the cleaning roller unit 18 is self-cleaning to a certain extent.

The dirty fluid tank device 66 is arranged between the cleaning roller unit 18 and the drive motor 28. A longitudinal direction of the inlet opening 144, which lies parallel to the longitudinal axis 116, is parallel to the axis of rotation 58 of the cleaning roller unit 18 and transversely and in particular perpendicular to the motor axis 46. Furthermore, this longitudinal axis of the inlet opening 144 is transverse and in particular perpendicular to the longitudinal axis 20.

It can be provided that the drive motor 28 is also used to drive one or more suction turbines which are accordingly in fluid connection with an interior of the dirty fluid tank device 66 in order to generate a negative pressure that improves the coupling of dirty fluid into the dirty fluid tank device.

In principle, the surface cleaning machine 10 can also be operated in mains operation.

The sweeping element 160 can also be arranged on the dirty fluid tank device 66.

Overload protection can be provided. This is designed, for example, as a mechanical overload protection device, which includes a slip clutch, for example. As an alternative or in addition, electronic overload protection can be provided which, for example, performs an overcurrent shutdown.

During normal cleaning operation, the tank device 34 is arranged above the cleaning head 14 in relation to the direction of gravity. As a result, cleaning liquid can flow from the tank device 34 to the cleaning head 14 without pumps under the action of gravity in order to apply cleaning liquid to the surface 16 to be cleaned directly or indirectly via the cleaning roller unit 18.

The surface cleaning machine 10 can be designed so that the sweeping element 160 only becomes effective when a certain angular position is set in relation to the longitudinal axis 20 to the surface 16 to be cleaned and in particular an angle between the surface 16 to be cleaned and the longitudinal axis below a Maximum angle is.

List of reference symbols

10

Area cleaning machine

12th

Device body

14th

Cleaning head

16

Surface to be cleaned

18th

Cleaning roller unit

20th

Longitudinal axis

22nd

Holding rod device

24

Holding rod

26th

Handle

28

Drive motor

30th

casing

32

holder

34

Tank facility for cleaning liquid

36

Tank mount

38

Valve device

39

Filter device

40

Fluid line

42

Trimming

44

Battery device

46

Motor axis

48

Swivel axis

50

Double arrow

52

Inner sleeve

54

Outer sleeve

56

Swivel bearing

58

Axis of rotation

60

Cleaning roller holder

62

Holding area

64

Receiving chamber

66

Dirty fluid tank device

68

Transmission device

70

wave

72

First part

74

Second part

76

Intermediate area

78

Sleeve

80

First face

82

Second face

84

ground

86

Receiving chamber wall

88

Recording room

90

page

92

Removal / insertion direction

94

Wall area

96

step

98

Fixation device

100

Stop position

102

flap

104

Swivel axis

106

Swivel bearing

108

direction

110

First chamber

112

Second chamber

114

Recess

116

Longitudinal axis

118

First outer end

120

Second outer end

122

bridge

124

Lid flap

126a

Swivel bearing

126b

Swivel bearing

128

bottom

130

Top

132

Recess

134

Undercut surface

136

Counter element

138

Locking element

140

step

142

Stripping guide device

144

Inlet mouth

146

First part

148

Second part

150

Edge element

151

Rounding, chamfering

152

Wall

154

cover

156

Area

158

Direction of rotation

160

Sweeping element

162

Leadership area

Claims (16)

1. Surface cleaning machine, comprising a cleaning head (14) having a driven cleaning roller unit (18) with a rotational axis (58), wherein in a cleaning operation, the surface cleaning machine is supported on a surface (16) to be cleaned only by way of the cleaning roller unit (18), and comprising a drive motor (28) for the cleaning roller unit (18), characterized by a dirty fluid tank device (66), which is removably arranged on the cleaning head (14).
2. Surface cleaning machine in accordance with Claim 1, characterized in that a longitudinal extent axis (116) of the dirty fluid tank device (66) is oriented in parallel to the rotational axis (58) of the cleaning roller unit (18).
3. Surface cleaning machine in accordance with Claim 1 or 2, characterized in that a motor axis (46) of the drive motor (28) is oriented transversely and in particular perpendicularly to a longitudinal extent axis (116) of the dirty fluid tank device (66).
4. Surface cleaning machine in accordance with any one of the preceding Claims, characterized in that the dirty fluid tank device (66) is arranged between the cleaning roller unit (18) and the drive motor (28),
   and in particular characterized by a gearing device (68) for the transmission of torque, which is arranged between the drive motor (28) and the cleaning roller unit (18), in that the dirty fluid tank device (66) has a top side (130) and a bottom side (128), wherein the bottom side (128) faces toward a cleaning roller holder (60) of the cleaning roller unit (18) and the top side (130) faces away from the bottom side (128), and in that the gearing device (68) is guided past the bottom side (128) or the top side (130) of the dirty fluid tank device (66),
   and in particular characterized in that the dirty fluid tank device (66) has a recess (114) in which at least one partial region of the gearing device (68) is arranged when the dirty fluid tank device (66) is fixed to the cleaning head (14).
5. Surface cleaning machine in accordance with any one of the preceding Claims, characterized by an appliance body (12) on which the cleaning head (14) is arranged, wherein at least one of the following devices is positioned on the appliance body (12): a tank device (34) for cleaning liquid; a valve device (38) for the supply of cleaning liquid to the cleaning head (14); a battery device (44) for the drive motor (28); a holding bar device (22) for holding and/or guiding the surface cleaning machine; a filter device (39) for cleaning liquid; the drive motor (28) at least partially,
   and in particular characterized in that the drive motor (28) is arranged at least partially between the appliance body (12) and the cleaning head (14), wherein it is arranged in particular partially in the appliance body (12),
   and in particular characterized in that the cleaning head (14) is pivotable about a pivotal axis (48) relative to the drive motor (28) and/or the appliance body (12), wherein the pivotal axis (48) is oriented in particular in parallel or coaxially to a motor axis (46) of the drive motor (28).
6. Surface cleaning machine in accordance with any one of the preceding Claims, characterized in that a cleaning roller holder (60) has a receiving chamber (64) with a receiving space (88) for the dirty fluid tank device (66),
   and in particular in that the receiving chamber (64) is associated with a fixing device (98) by means of which the dirty fluid tank device (66) is fixable to the receiving chamber (64), wherein the fixing device (98) is of releasable configuration for the removability of the dirty fluid tank device (66) from the cleaning head (14), and in particular the fixing device (98) is configured such that the dirty fluid tank device (66) is held on the receiving chamber (64) in a holding position (100) by means of positive engagement, and in particular in that the fixing device (98) is or comprises at least one pivotable flap (102), and in particular in that a pivotal axis (104) of the at least one flap (102) is aligned at least approximately in parallel to a rotational axis (58) of the cleaning roller unit (18).
7. Surface cleaning machine in accordance with Claim 6, characterized by at least one of the following:

   - the at least one flap (102) acts on a top side (130) of the dirty fluid tank device (66), which faces away from a bottom side (128), wherein the bottom side (128) of the dirty fluid tank device (66) faces toward a base (84) of the receiving chamber (64) when the dirty fluid tank device (66) is fixed to the cleaning head (14);

   - the at least one flap (102) is configured as a holding-down device, which positions the dirty fluid tank device (66) in relation to the cleaning roller unit (18) in a defined manner and/or positions the dirty fluid tank device (66) in the receiving space (88) and in particular presses the dirty fluid tank device (66) in a holding position (100) against a base (84) of the receiving chamber (64);

   - the at least one flap (102) is spring-loaded and/or elastically configured in such a way that the dirty fluid tank device (66) is held in the receiving space (88) with a prestress;

   - at least one recess (132) is arranged on the top side (130) of the dirty fluid tank device (66) and the at least one flap (102) has at least one counter element (136) for dipping into the at least one recess (132), and in particular
   the at least one recess (132) has at least one undercut (134) and the at least one counter element (136) has a blocking element (138) adapted to the at least one undercut (134), which blocking element (138) blocks a mobility of the dirty fluid tank device (66) in a direction (92) away from a base (84) of the receiving chamber (64) when the at least one flap (102) is closed;

   - the receiving chamber (64) and the dirty fluid tank device (66) are configured adapted to one another such that in a holding position (100) of the dirty fluid tank device (66) on the receiving chamber (64), a mobility of the dirty fluid tank device (66) transverse to a perpendicular of a base (84) of the receiving chamber (64) is blocked.
8. Surface cleaning machine in accordance with any one of the preceding Claims, characterized in that the dirty fluid tank device (66) has one or more lid flaps (124).
9. Surface cleaning machine in accordance with any one of the preceding Claims, characterized in that the dirty fluid tank device (66) is configured as a unit.
10. Surface cleaning machine in accordance with any one of the preceding Claims, characterized in that the cleaning roller unit (18) is of two-part configuration having a first part (72) and a second part (74), wherein a first chamber (110) of the dirty fluid tank device (66) is associated with the first part (72) of the cleaning roller unit (18) and a second chamber (112) of the dirty fluid tank device (66) is associated with the second part (74) of the cleaning roller unit (18), and in particular the drive motor (28) acts on a middle region, which is located between the first part (72) and the second part (74).
11. Surface cleaning machine in accordance with any one of the preceding Claims, characterized by a scraping-guiding device (142) for dirty fluid, which acts on the cleaning roller unit (18) and which is arranged on an entry opening (144) of the dirty fluid tank device (66),
    and in particular characterized in that the scraping-guiding device (142) is arranged and configured such that dirty fluid that is collected by the cleaning roller unit (18) is released from the cleaning roller unit (18) by means of scraping and is guided to the entry opening (144) of the dirty fluid tank device (66),
    and in particular characterized in that the scraping-guiding device (142) is configured such that dirty fluid is guided without a suction fan into the dirty fluid tank device (66) by the scraping-guiding device (142) at the entry opening (144) of the dirty fluid tank device (66),
    and in particular characterized in that the scraping-guiding device (142) is arranged downstream of the entry opening (144) in relation to a rotational direction (158) of the cleaning roller unit (18),
    and in particular characterized in that the scraping-guiding device (142) projects into a covering (42) of the cleaning roller unit (18), and in particular characterized in that the scraping-guiding device (142) is rounded or chamfered at an edge that projects into the covering (42) and that faces toward the entry opening (144), and in particular characterized in that the scraping-guiding device (142) projects into the covering (42) with a depth (T) of at least 5% of a thickness (D) of the covering (42), with respect to a wet covering (42);
    and in particular characterized in that the scraping-guiding device (142) is arranged on the dirty fluid tank device (66) and is removable with the dirty fluid tank device (66) from the cleaning head (14);
    and in particular characterized in that the scraping-guiding device (142) is formed by one or more edge elements (150), wherein in particular an edge element (150) at least partially forms a wall of the entry opening (144).
12. Surface cleaning machine in accordance with any one of the preceding Claims, characterized in that arranged on the cleaning head (14) is at least one sweeping element (160), by means of which coarse dirt is feedable to the cleaning roller unit (18) to be collected by the cleaning roller unit (18),
    and in particular in that an entry opening (144) of the dirty fluid tank device (66) is positioned between a scraping-guiding device (142) and the at least one sweeping element (160).
13. Surface cleaning machine in accordance with any one of the preceding Claims, characterized by a battery device (44) and in particular rechargeable battery device (44) for supplying the drive motor (28) with electrical energy,
    and in particular in that the drive motor (28) is arranged between the battery device (44) and the cleaning head (14).
14. Surface cleaning machine in accordance with any one of the preceding Claims, characterized by a tank device (34) for cleaning liquid,
    and in particular in that the tank device (34) for cleaning liquid is positioned above the cleaning roller unit (18), in relation to the direction of gravity, when the surface cleaning machine is operated in a proper cleaning operation with the cleaning roller unit (18) placed on the surface (16) to be cleaned.
15. Surface cleaning machine in accordance with any one of the preceding Claims, characterized in that an entry opening (144) of the dirty fluid tank device (66) has a longitudinal extent direction which is oriented in parallel to a rotational axis (58) of the cleaning roller unit (18).
16. Surface cleaning machine in accordance with any one of the preceding Claims, characterized by a configuration as a hand-operated or hand-guided surface cleaning machine.

Images