CN114601385B

CN114601385B - Surface cleaning machine

Info

Publication number: CN114601385B
Application number: CN202210223049.8A
Authority: CN
Inventors: 托马斯·博尔基歇尔; 安德烈亚斯·米勒; 赖纳·库尔曼; 托马斯·泽雷尔
Original assignee: Alfred Kaercher SE and Co KG
Current assignee: Alfred Kaercher SE and Co KG
Priority date: 2016-03-09
Filing date: 2016-03-09
Publication date: 2023-07-25
Anticipated expiration: 2036-03-09
Also published as: EP3426123A1; CN108882820B; WO2017152970A1; CN108882821A; EP3426121B1; WO2017153450A1; CN108882821B; EP3426121A1; CN114601385A; PL3426121T3; CN108882820A

Abstract

The invention relates to a surface cleaning machine comprising a cleaning head (14) having a driven cleaning roller unit (18) with an axis of rotation (58), wherein the surface cleaning machine is supported on a surface (16) to be cleaned only via the cleaning roller unit (18) during a cleaning operation, and comprising a drive motor (28) for the cleaning roller unit (18) and a dirty liquid tank device (66) which is arranged in a removable manner on the cleaning head (14).

Description

Surface cleaning machine

The present application is a divisional application of the invention patent application of the name "face cleaner" with the application of the name 2016, 3, 9 and 201680083249.0 (PCT application No. PCT/EP 2016/055031).

Technical Field

The invention relates to a surface cleaning machine comprising a cleaning head having a driven cleaning roller unit with an axis of rotation.

Background

A surface cleaning machine with a rotating brush is known from WO 2010/04185 A1.

A cleaning head for a floor cleaning machine is known from US 7,665,174 B2.

From US 4,173,054 a floor cleaner is known which comprises a handle, a main body, a roller mechanism with rollers with cleaning belts, a scraper and a dirty liquid reservoir.

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

From US 7,921,497 B2 a carpet extractor is known, which is manually operated and comprises a drive roller coupled to an extracting roller.

The surface cleaners are known from the applications PCT/EP2015/073275, PCT/EP2015/072929, PCT/EP2015/073529, PCT/EP2015/073116, PCT/EP2015/073478, which are not previously disclosed. A surface cleaning machine is also known from PCT/EP2015/073315, which is not previously disclosed.

Disclosure of Invention

The object of the present invention is to provide a surface cleaning machine of the type mentioned at the outset which provides an optimized cleaning effect with easy operation.

According to the invention, this object is achieved in the surface cleaning machine described at the outset in that, in a cleaning operation, the surface cleaning machine is supported on the surface to be cleaned only via a cleaning roller unit having an axis of rotation, a drive motor for the cleaning roller unit is provided, and a dirty liquid tank arrangement is provided, which is arranged in a removable manner on the cleaning head.

Since the surface cleaning machine is supported on the surface to be cleaned only via the cleaning roller unit, a relatively simple structure of the surface cleaning machine is obtained which can be realized with a low quality.

The scrub roller unit is a one-piece or multi-piece scrub roller having a unique axis of rotation. In a multi-piece cleaning roller unit, all the subunits have the same coaxial axis of rotation, and in a cleaning operation, the rotation of all the subunits takes place around the same axis of rotation at the same rotational speed in the same rotational direction, and the drive motor drives all the subunits.

Furthermore, cleaning can also be performed in difficult-to-reach areas, since the space requirements for the cleaning head can be kept small, and the driven cleaning roller unit therefore also functions as a support device; thereby, no further traveling elements such as wheels or the like have to be provided.

The dirt tank arrangement on the cleaning head is removable, so that the distance of travel for the dirt liquid from the cleaning roller unit to the dirt tank arrangement can be kept small, thus making simple feeding possible.

The dirty tank arrangement is removable from the cleaning head, so that it can be emptied and cleaned in a simple manner. The dirty tank arrangement may contain a large volume of dirty liquid, including liquid. In particular, the dirty tank arrangement can be removed as a whole from the cleaning head or inserted into the cleaning head as a whole, so that a higher filling level can be achieved for the dirty tank arrangement.

It is thereby even possible to carry out the feeding of the dirty liquid from the cleaning roller unit into the dirty liquid tank arrangement in a suction-free manner, or to provide the support with a suction machine having a relatively small power requirement and thus a relatively small energy requirement.

The surface cleaning machine can thus be operated in an energy-saving manner. It is thereby also possible to supply the surface cleaning machine and in particular the drive motor with current using a preferably rechargeable battery device. The surface cleaning machine can thus be operated independently of the power supply system.

Advantageously, the longitudinal extension axis of the dirty liquid tank arrangement is oriented parallel to the (in particular unique) rotation axis of the cleaning roller unit. The longitudinal extension axis of the dirty tank arrangement extends between a first end side and an opposite second end side of the dirty tank arrangement. The longitudinal extension axis presets the longest extension of the dirty tank arrangement. This results in a space-saving arrangement of the dirty tank arrangement on the cleaning head.

It is furthermore advantageous if the motor axis of the drive motor is oriented transversely and in particular perpendicularly to the longitudinal extension axis of the dirty tank arrangement. The motor axis of the drive motor corresponds to the rotor axis of the drive motor. A space-saving construction is obtained by the transverse orientation of the longitudinal extension axis of the dirty tank arrangement.

More particularly advantageously, the dirty liquid tank means is arranged between the cleaning roller unit and the drive motor. A short feed path for the dirty liquid from the cleaning roller unit into the dirty liquid tank arrangement is thereby obtained. It is thereby again sufficient to use a suction machine with a relatively low power to suck away dirty liquid or to enable a suction-free construction.

In one embodiment, a transmission is provided for torque transmission, which is arranged between the drive motor and the cleaning roller unit, wherein the dirty liquid tank arrangement has an upper side and a lower side, wherein the lower side faces the cleaning roller holder of the cleaning roller unit and the upper side faces away from the lower side, and wherein the transmission is guided past the upper side and the lower side of the dirty liquid tank arrangement. The transmission provides torque transfer from the drive motor to the scrub roller unit. The scrub roller unit is positioned spaced apart from the drive motor. The transmission provides, in particular, a rotational speed reduction, a torque reversal and, if appropriate, a bridging distance. The transmission is guided past the underside or upper side of the dirty tank, resulting in a simple and compact construction. In principle, it is also possible for the transmission to be guided through a through opening in the dirty tank arrangement. In contrast, a simplified removability of the dirty tank arrangement from the cleaning head and a simplified construction of the dirty tank arrangement are achieved if the transmission is guided past the underside or the upper side of the dirty tank.

In one embodiment, the dirty tank arrangement has a recess in which at least one part region of the transmission is located when the dirty tank arrangement is secured to the cleaner head. The corresponding free space through the recess provides a space in which the transmission can be positioned. This results in an optimum adaptation of the geometry of the dirty tank arrangement to the cleaning head.

In one embodiment, an apparatus body is provided, on which the cleaning head is arranged, wherein at least one of the following is positioned on the apparatus body: tank means for a cleaning liquid; a valve means for lowering the delivery of cleaning liquid to the cleaning head; battery means for driving the motor; a holding bar arrangement for holding and/or guiding the surface cleaning machine; a filter device for cleaning fluid; at least part of the drive motor. A compact structure is thereby obtained. In particular, components of a surface cleaning machine having a relatively large weight, such as, for example, a drive motor, can be positioned in the vicinity of the cleaning head. Furthermore, a removable valve device for delivering cleaning liquid to the cleaning head can be positioned on the device body, for example. A valve device for supplying cleaning liquid to the cleaning head and a filter device for the cleaning liquid can be positioned in particular in the housing on the machine body. Furthermore, the battery arrangement can be optimally positioned, in particular when the drive motor itself is arranged on the device body. It may also be provided that at least part of the drive motor is located in the device body. For example, the machine body is used to "anchor" the drive motor to the surface cleaning machine.

Advantageously, the drive motor is arranged at least partially between the device body and the cleaning head, wherein the drive motor is arranged in particular at least partially in the device body part. The battery device can thus be arranged in an optimal manner in the device body, for example. Furthermore, the torque transmission from the drive motor to the cleaning roller unit on the cleaning head can be realized in a simple manner. The drive motor can be arranged relatively far below (in view of the defined running with the cleaning roller unit supported on the surface to be cleaned), so that an easy handling is achieved. In this arrangement, the swingable movement between the cleaning head and the device body can also be achieved in a simple manner.

Advantageously, the cleaning head can be pivoted about a pivot axis relative to the drive motor and/or the device body, wherein the pivot axis is oriented in particular parallel or coaxial to the motor axis of the drive motor. Thereby an extended operational possibilities is obtained; accessibility of the spatially narrow region of the surface to be cleaned is improved, since the device body can be repositioned in a manner that is compatible with the cleaning head. The corresponding pivot bearing can be formed in a simple manner, for example, by a jacket of the drive motor as an inner sleeve and an outer sleeve arranged on the device body being formed in such a way that the pivot bearing is realized.

In one embodiment, the scrub roller holder having the scrub roller unit positioned thereon has a receiving chamber having a receiving cavity for a dirty liquid tank device. The receiving chamber can be configured in a multi-chamber manner, and the receiving chamber can comprise a plurality of subspaces. In principle, these subspaces can be fluidically connected to one another or can be fluidically separated from one another.

In particular, a fastening device is associated with the receiving chamber, by means of which the dirty tank arrangement is fastened to the receiving chamber, wherein the fastening device is designed to be releasable in order to enable the dirty tank arrangement to be removed from the cleaning head, and in particular the fastening device is designed in such a way that the dirty tank arrangement is held in a holding position at the receiving chamber by means of form locking (formschlus). The fixing of the dirty tank arrangement to the receiving chamber can thus be achieved in a simple manner. Furthermore, the dirty tank arrangement can be removed in a simple manner in order to empty the dirty tank arrangement and, if necessary, clean it. The fastening device is furthermore designed such that the dirty tank device is positioned with the inlet nozzle in a defined manner relative to the cleaning roller unit. In particular, the scraping guide can be positioned in a defined manner relative to the cleaning roller unit.

In a structurally simple embodiment, the fastening means comprise at least one pivotable flap, or the flap itself. The receiving chamber can be released in a simple manner by means of the pivotable flap, so that the dirty tank arrangement can be inserted or removed. When the flip cover acts on the dirty liquid tank device, the retaining and positioning of the dirty liquid tank device can be ensured through the flip cover. Furthermore, the flap can be designed such that it is prestressed in such a way that the dirty tank arrangement is positioned in a defined manner on the receiving chamber, in order in particular to position the inlet mouth of the dirty tank arrangement and/or the scraping guide if appropriate in a defined manner relative to the cleaning roller unit.

In this case, it is advantageous if the pivot axis of the at least one flap is oriented at least approximately parallel to the rotational axis of the cleaning roller unit. A structurally simple structure is thereby obtained. The dirty tank arrangement can be removed and replaced in a simple manner.

Advantageously, the at least one flap acts on an upper side of the dirty tank arrangement, which upper side faces away from the lower side, wherein the lower side of the dirty tank arrangement faces towards the bottom of the receiving chamber when the dirty tank arrangement is secured to the cleaning head. The retaining position of the dirty tank arrangement on the receiving chamber can thereby be ensured in a simple manner. Furthermore, a defined positioning can be achieved.

Advantageously, the at least one flap is configured as a hold-down holder which positions the dirty tank arrangement in a defined manner relative to the cleaning roller unit and/or in the receiving chamber, and in particular, the dirty tank arrangement is pressed against the bottom of the receiving chamber in the holding position. In this way, the dirty tank arrangement can be removed or replaced in a simple manner for the operator and automatic positioning can be achieved to a certain extent; the operator does not have to be careful about the accurate positioning.

For example, at least one flap is spring-loaded and/or is designed to be resilient in such a way that the dirty tank arrangement is held in the receiving space with a preload. The pretension serves to bring the inlet mouth of the dirty liquid tank arrangement into 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 tank arrangement, and the at least one flap has at least one counter element for sinking into the at least one recess. In particular, this makes it possible in a simple manner to prevent the dirty tank arrangement from being movable in the removal direction on the receiving chamber.

It is furthermore advantageous if the at least one recess has at least one side recess and the at least one counter element has a locking element which mates with the at least one side recess, the locking element preventing the mobility of the dirty liquid tank arrangement in a direction away from the bottom of the receiving chamber when the at least one flap is closed. In this way, a form-locking can be achieved, which ensures that falling off is prevented in the position of the holding position of the dirty tank arrangement. Furthermore, the positioning of the dirty tank arrangement relative to the cleaning roller unit can be achieved in a simple manner.

In particular, the receiving chamber and the dirty tank arrangement are configured to be matched to one another in such a way that, in the holding position of the dirty tank on the receiving chamber, the dirty tank arrangement is prevented from being movable transversely to a vertical line at the bottom of the receiving chamber. This results in a simple manner in the fixation. Thus, the base provides resistance to movement parallel to the vertical line of the base, while the flip provides resistance to movement in the opposite direction.

In one embodiment, the dirty tank arrangement has one or more flaps. By opening the flap, the dirty tank arrangement can be emptied and, if necessary, cleaned in a simple manner. The flap forms, in particular, an upper side of the dirty tank arrangement, on which at least one flap of the fastening device can act.

In one embodiment, the dirty tank arrangement is constructed as a unit. The unit may here comprise one chamber or a plurality of chambers. The unit can be removed from the cleaning head as a whole or can be inserted into the cleaning head. In principle, it is also possible for the dirty tank arrangement to have sub-units that are separate from one another and that can be removed from the cleaning head independently or can be inserted into the cleaning head.

In one embodiment, the cleaning roller unit is configured in two parts (a two-part cleaning roller) with a first part and a second part, wherein the first part of the cleaning roller unit is assigned a first chamber of the dirty liquid tank arrangement and the second part of the cleaning roller unit is assigned a second chamber of the dirty liquid tank arrangement, and in particular the drive motor acts on an intermediate region between the first part and the second part. The intermediate region is for example the intermediate region of the shaft. A space-saving and structurally simple construction for torque transmission from the drive motor to the cleaning roller unit having (exactly one) axis of rotation is thereby obtained. In particular, the drive motor can thereby be positioned such that its motor axis is transverse to the rotational axis of the cleaning roller unit.

Advantageously, a scraping guide for the dirty liquid is provided, which acts on the cleaning roller unit and which is arranged on the inlet mouth of the dirty liquid tank arrangement. The dirt can be released from the cleaning roller unit by the scraping guide device, and the released dirt can be introduced into the dirty tank device, in particular via the inlet nozzle.

In particular, the scraping guide is arranged and configured in such a way that dirt entrained by the cleaning roller unit is separated from the cleaning roller unit by scraping off and is guided to the inlet nozzle of the dirty tank device. The feeding of the dirty liquid into the dirty liquid tank arrangement at the inlet nozzle can also take place at least partly via an impact effect by centrifugal force. The dirty liquid may be at least partially thrown into the dirty liquid tank arrangement at the inlet nozzle via the scrape-off guide arrangement.

The scraping guide is more particularly advantageously designed in such a way that the dirty liquid is guided into the dirty liquid tank device at the inlet mouth of the dirty liquid tank device by the scraping guide without a suction machine. The scraping guide is then arranged in particular directly at the inlet mouth of the dirty tank arrangement. In particular, the scraping guide then forms itself a wall of the inlet nozzle. A structurally simple construction of the surface cleaning machine is thus achieved as a whole, since there is no need to provide a suction machine with a blower motor, a low-pressure line and the like. Furthermore, a separator does not have to be provided.

It is furthermore advantageous if the scraping guide is arranged behind the inlet nozzle with respect to the direction of rotation of the cleaning roller unit. The dirty liquid can thereby be detached from the cleaning roller unit via a wiping effect and guided into the dirty liquid tank arrangement.

More particularly advantageously, the scraping guide projects into the coating of the cleaning roller unit. Thereby, the dirty liquid can be separated from the cleaning roller unit via the scraping off.

Advantageously, the scraping guide is rounded or chamfered at the edge which protrudes into the coating of the cleaning roller unit and faces the inlet nozzle. Thereby protecting the cover fibers. Furthermore, the rotary drive of the cleaning roller unit is operated in an energy-saving manner.

In view of the wet coating, it is particularly advantageous if the scraping guide projects into the coating to a depth of at least 5% of the thickness of the coating.

In principle, it is possible for the scraping guide to be arranged on the cleaning roller holder. In an embodiment, the scraping guide means is arranged on the dirty tank means and is removable from the cleaning head together with the dirty tank means. The scraping guide is then automatically positioned in a defined manner "correctly" with respect to the cleaning roller unit when the dirty-liquid tank arrangement is positioned in a holding position on the cleaning head.

In particular, the scraping guide is formed by one or more edge elements, that is to say by one or more strips, which have corresponding edges that can in particular protrude into the coating of the cleaning roller unit. Preferably, the edge element forms at least in part a wall of the inlet nozzle.

It is furthermore advantageous if a cleaning element is arranged on the cleaning head, by means of which coarse dirt is fed to the cleaning roller unit for entrainment by the cleaning roller unit.

In particular, the inlet nozzle of the dirty tank arrangement is positioned between the scraping guide and the cleaning element. Thus, coarse dirt conveyed via the cleaning element of the cleaning roller unit can be entrained by the cleaning roller unit and scraped off on the scraping guide.

More particularly advantageously, battery means and in particular rechargeable electronic means are provided for supplying the drive motor with electrical energy. This allows the surface cleaning machine to be operated independently of the power supply system. A simple operability is obtained.

It is furthermore advantageous if the drive motor is arranged between the battery device and the cleaning head. This results in an optimal locatability of the battery device.

Furthermore, it is advantageous if tank means for the cleaning liquid are provided. The surface to be cleaned can thus be wetted directly or indirectly (by wetting the cleaning roller unit). The cleaning liquid is in particular water which may be mixed with a chemical cleaning agent. Dirt on the surface to be cleaned can be wetted by the cleaning liquid in order to achieve improved disengageability.

In a structurally simple embodiment, the tank device for the cleaning liquid is positioned above the cleaning roller unit with respect to the direction of gravity when the surface cleaning machine is operated in a cleaning operation with the prescribed cleaning roller unit placed on the surface to be cleaned. The supply of cleaning liquid to the cleaning head and in particular to the cleaning roller unit then takes place solely under the influence of gravity. No additional pump for conveying the cleaning liquid is required.

Advantageously, the inlet mouth of the dirty liquid tank arrangement has a longitudinal extension oriented parallel to the rotational axis of the cleaning roller unit. This allows the dirty liquid to be fed into the dirty liquid tank arrangement over a large length.

The surface cleaning machine is in particular configured as a manually operated or a manually guided surface cleaning machine. By virtue of being supported on the surface to be cleaned via the cleaning roller unit, the operator can hold the surface cleaner on the end facing away from the cleaning head (so that it does not tip over) and guide it over the surface to be cleaned.

Drawings

The following description of the preferred embodiments is provided for the purpose of elaborating the invention in connection with the accompanying drawings. Wherein:

FIG. 1 shows a perspective view of an embodiment of a face cleaner according to the present invention;

fig. 2 shows a further perspective view of the cleaning head of the surface cleaning machine according to fig. 1, wherein an interface on the device body is indicated;

FIG. 3 shows a side view of the cleaning head according to FIG. 2 with the dirty tank arrangement removed;

FIG. 4 shows a partial cross-sectional view in plane E of FIG. 1;

FIG. 5 shows an enlarged view of area A according to FIG. 4 with a fixed dirty tank arrangement;

FIG. 6 shows the same view as FIG. 5 with the securing means in position for the removable dirty tank means;

Fig. 7 shows the same view as fig. 5, in an intermediate position;

FIG. 8 illustrates a perspective view of an embodiment of a dirty tank arrangement;

FIG. 9 shows a view in direction B of the dirty tank arrangement according to FIG. 8; and

fig. 10 shows a side view in direction C of the dirty tank arrangement according to fig. 8.

Detailed Description

The exemplary embodiment of a surface cleaning machine according to the invention, which is shown in fig. 1 and is shown in fig. 2 to 10 in a partial view and is designated by 10, is in particular designed as a hand-held and hand-guided floor cleaning machine for hard floors.

The face cleaner 10 includes an apparatus body 12 and a cleaning head 14. The cleaning head 14 is disposed on the apparatus body 12.

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

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

In one embodiment, the retaining rod arrangement 22 comprises a (especially exactly one) retaining rod 24 having a longitudinal extension parallel to the longitudinal axis 20. A handle 26, and in particular an arcuate handle, is arranged at the upper region of the holding rod arrangement 22. The operator can hold the surface cleaning machine 10 with one hand on this handle 26 and can guide on the surface 16 to be cleaned (with the supported cleaning roller unit 18).

The retaining rod arrangement 22 may be configured to be variable in length or fixed in length relative to the length along the longitudinal axis 20.

The surface cleaning machine 10 is dimensioned in such a way that, when the cleaning roller unit 18 is supported on the surface 16 to be cleaned, the operator can comfortably carry out a cleaning operation on the surface to be cleaned with the angled holding arm. In particular, the length between the scrub roller unit 18 and the arcuate handle 26 along the longitudinal axis 20 of the surface cleaning machine 10 is in the range of 60cm and 130 cm.

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

The apparatus body 12 includes a housing 30 in which the components of the face cleaner 10 are protected.

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

A can receptacle 36 for a can device 34 is arranged on the housing 30. The corresponding outlet of the tank arrangement 34 can be connected with a tank receptacle 36.

A valve device 38 is positioned in the housing 30 in such a way that it is arranged behind the canister holder 36.

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

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

With the shut-off valve open, cleaning liquid can flow from the tank 34 via the fluid line or lines 40 to the cleaning head 14 and be applied to the surface 16 to be cleaned.

To this end, one or more outlet openings for cleaning liquid are provided on the cleaning head 14. In principle, it is possible to form the outlet opening or outlet openings in such a way that the surface 16 to be cleaned is directly exposed to the cleaning liquid.

In an advantageous variant, the outlet opening or the outlet openings are arranged in such a way that the cleaning roller unit 18 and in particular the coating 42 of the cleaning roller unit 18 are exposed to the cleaning liquid. The surface 16 to be cleaned is then indirectly subjected to a cleaning liquid loading by the cleaning roller unit 18 via the cleaning liquid.

The cover 42 is made of a textile material, in particular.

A switch is assigned to the valve device 38, by means of which the user can adjust whether the shut-off valve of the valve device 38 is closed (i.e. whether the cleaning liquid is shut off to the cleaning head 14) or whether the shut-off valve is open (i.e. whether cleaning liquid is released from the tank device 34 to the cleaning head 14).

The switch may be disposed 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 arrangement 44 for supplying electrical energy to the drive motor 28 is arranged in the housing 30. The battery device 44 is rechargeable. Thereby, the surface cleaning machine 10 can be operated independently of the mains power supply.

In principle, however, it is also possible for the surface cleaning machine 10 to be operated via mains current. A corresponding interface device for the mains current is then arranged on the surface cleaning machine 10.

The battery device 44 can be removed from the device body 12 in order to be able to perform recharging on the corresponding charger.

It is also possible to provide that corresponding charging means are integrated in the device body 12 and that recharging can be performed without removing the battery means 44 from the device body 12. The corresponding socket is arranged, for example, on the retaining rod 24.

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

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

In one embodiment, the motor axis 46 is oriented at an angle to the longitudinal axis 20 (and of the retaining rod 24) of the device body 12. 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 swingable relative to the apparatus body 12 about a swing axis 48 (see fig. 2 and 3). This swingable property is indicated in fig. 2 by a double arrow with reference numeral 50.

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

In one embodiment, the drive motor 28 is disposed on the inner sleeve 52. The inner sleeve 52 preferably forms an envelope for the drive motor 28.

An outer sleeve 54 is securely positioned within the device body 12. The inner sleeve 52 is disposed within the outer sleeve 54. The inner sleeve 52 can be pivoted about the pivot axis 48 relative to the outer sleeve 54, wherein the inner sleeve 52 is pivotally mounted in the outer sleeve 54. The inner sleeve 52 and the outer sleeve 54 form a swing bearing 56 for the cleaning head 14 swingable relative to the apparatus body 12. The drive motor 28 can be pivoted about a pivot axis 48 relative to the device body 12. The corresponding leads from the battery device 44 to the drive motor 28 are arranged and designed in such a way that they allow a pivoting movement. Accordingly, the fluid line 40 or the plurality of fluid lines 40 is/are designed in such a way that it/they allow such a swinging movement.

The pivot bearing 56 has a basic position, which is defined, for example, by the fact that the (single) axis of rotation 58 of the cleaning roller unit 18 is oriented perpendicularly to the plane E according to fig. 1. The pivoting about the pivot axis 58 relative to this basic position is represented in an angular position of the rotation axis 58 relative to the plane E.

The oscillating bearing 56 is adjusted in particular in such a way that a special effort is required in relation to the normal cleaning operation for causing the cleaning head 14 to pivot out of its basic position.

The ability of the cleaning head 14 to pivot about the pivot axis 48 enables better cleaning possibilities even in difficult-to-reach positions by allowing the device body 12 to be "repositioned" with respect to the surface 16 to be cleaned, along with the holder bar arrangement 22, to some extent.

The cleaning head 14 has a cleaning roller holder 60 on which the cleaning roller unit 18 is rotatably mounted about the axis of rotation 58. The scrub roller holder 60 is fixedly connected (drehfest) 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 tank arrangement 66 (see, for example, fig. 3).

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

The scrub roller unit 18 is torsionally coupled to the drive motor 28 via a transmission 68.

The transmission 68 torsionally connects the motor shaft of the drive motor 28 (which rotates about the motor axis 46) with a shaft 70 for the cleaning roller unit 18.

In one embodiment, transmission 68 includes a speed reducer. The speed reducer is used to reduce the rotational speed compared to the rotational speed of the motor shaft. For example, the rotational speed of a standard electric motor is on the order of 7000 revolutions per minute. The speed reducer provides for reducing the speed of rotation to, for example, about 400 revolutions per minute.

The rotation speed reducer may be disposed in the inner sleeve 52 on the cleaning roller holder 60 or outside the inner sleeve 52.

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

The transmission 68 also includes a bevel gear mechanism that provides torque redirection to cause actuation of the scrub roller unit 18 with the rotation axis 58 transverse (and in particular perpendicular) to the motor axis 46. The bevel gear is arranged in particular after the speed reducer.

In one embodiment, the bevel gear transmission has one or more gears that are non-rotatably coupled to respective shafts of the speed reducer. These gears act on bevel gears for angular conversion.

In one embodiment, the transmission 68 further comprises a belt that is torsionally coupled to the bevel gear train and acts on the shaft 70. The belt spans the space between the shaft 70 and the bevel gear and provides a speed reduction.

In one embodiment, the scrub roller unit 18 is two-piece configured with a first portion 72 and a second portion 74. The first portion 72 is non-rotatably disposed on a first side of the shaft 70 and the second portion 74 is non-rotatably disposed on a second side of the shaft 70 opposite the first side of the shaft 70.

The transmission 68 is guided and coupled to the shaft 70 in an intermediate region 76 between the first portion 72 and the second portion 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 (see, for example, fig. 5), which is configured cylindrically. A cover 42 is disposed over the sleeve 78. The scrub roller unit 18 or the first portion 72 and the second portion 74 are secured to the shaft 70 via a sleeve 78.

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

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

The receiving chamber 64 has a bottom 84 (see, e.g., fig. 5). At the bottom 84, transversely thereto, a receiving chamber wall 86 is arranged. The receiving chamber wall 86 and the bottom 84 of the receiving chamber 64 define a receiving chamber 88 for the dirty tank arrangement 66.

Opposite the bottom 84, the receiving cavity 88 is open. Via the respective side 90, the dirty tank arrangement 66 can be removed from or inserted into the receiving chamber 88. The removal or insertion direction 92 (see fig. 6) is substantially perpendicular to the bottom 84 (and perpendicular to the axis of rotation 58).

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

The step 96 is furthermore arranged near the bottom 84.

The receiving chamber 64 is assigned a fastening device 98, by means of which the dirty tank arrangement 66 can be fastened in a holding position 100 (fig. 5) at the receiving chamber wall 86. The fastening is achieved in particular by form-locking.

In one embodiment, the fastening device 98 comprises a flap 98 which is arranged on the cleaning head 14 in a pivotable manner about a pivot axis 104 by means of a pivot bearing 106. The wobble bearing 106 is here positioned at or near the inner sleeve 52.

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

In the holding position 100, the flap 102 acts on the dirty tank arrangement 66 and holds it in the receiving cavity 88 over the receiving cavity 64.

To remove the dirty tank arrangement 66 from the cleaning head 14, the flap 102 is pivotable out of the holding position 100 in the direction of the appliance body 12 (see fig. 6, indicated by reference numeral 108) in order to release the dirty tank arrangement 66, so that it can be removed from the receiving chamber 88 at the side 92 in the removal direction 92 and can be removed from the cleaning head 14.

The dirty tank arrangement 66 (fig. 8 to 10) is constructed as a unit. It has a first chamber 110 facing the first portion 72 of the scrub roller unit 18 and a second chamber 112 facing the second portion 74 of the scrub roller unit 18.

The first chamber 110 contains dirty liquid from the first portion 72 of the scrub roller unit 18 and the second chamber 112 contains dirty liquid from the second portion 74 of the scrub roller unit 18.

In principle, it is possible here for the first chamber 110 and the second chamber 112 to be fluidically connected to one another and, in this case, for example, to be fluidically connected to a common drain opening.

It is also possible to provide that the first chamber 110 and the second chamber 112 are separated from each other in a fluid-tight manner and that each chamber 110, 112 has its own outlet opening.

The first chamber 110 and the second chamber 112 are spaced apart; between the first and second chambers 110, 112, the dirty tank arrangement 66 has a recess 114. The recess 114 is disposed about a longitudinally extending axis 116 of the dirty tank arrangement 66 in a region intermediate the dirty tank arrangement 66.

When the dirty tank arrangement 66 is secured to the cleaner head 14 in the holding position 100, the longitudinally extending axis 116 is oriented parallel to the rotational axis 58 of the cleaner roller unit 18.

The longitudinally extending axis 116 of the dirty tank arrangement 66 extends between a first outer end 118 and a second outer end 120 of the dirty tank arrangement 66, wherein the dirty tank arrangement 66 has its greatest length dimension between the first outer end 118 and the second outer end 120.

Recess 114 is used to guide at least a portion of the area of transmission 68. The cleaning roller unit 18 is centrally driven. The transmission 68 spans the distance between the drive motor 28 and the shaft 70. Recess 114 leaves a space area on the dirty tank arrangement 86 to accommodate the transmission 68 to some extent.

It may be provided that the receiving chamber 64 has receiving cavities 88 for the first chamber 110 and the second chamber 112, respectively.

It is also possible to provide the first chamber 110 and the second chamber 112 with a common receiving chamber 88.

The first and second chambers 110, 112 are connected to one another via a crossover 122 so that the dirty tank arrangement 66 forms a unit and can be removed from or placed into the cleaner head 14 as a whole.

In one embodiment, the dirty tank arrangement 66 has a cover plate 124 swingably disposed over the first and second chambers 110, 112 via spaced apart swing bearings 126a, 126 b.

The cover plate 124 may be flipped up to provide respective drain openings for the first and second chambers 110, 112 and to enable cleaning of the interior cavity of the dirty tank arrangement 66 if necessary.

In the embodiment shown in fig. 8-10, the first chamber 110 and the second chamber 112 are fluidly separated from each other. The cover 124 is a common cover for the first chamber 110 and the second chamber 112. The first and second chambers 110, 112 may then be evacuated by opening the cover plate 124 or access to the first and second chambers 110, 112 may be provided to enable corresponding cleaning to be performed.

The cover plate can be secured with the first and/or second chambers 110, 112 and/or the crossover 122 in a manner that provides a fluid tight dirty tank arrangement 66 (except for the inlet nozzle) when the cover plate 124 is closed.

In principle, it is also possible for the dirty liquid tank arrangement 66 to comprise mechanically separate chambers, whereby in each case one chamber is assigned to the first and second portions 72, 74 of the cleaning roller unit 18. In this case, the corresponding part of the dirty tank arrangement must then be removed from or inserted into the cleaner head 14 separately.

The dirty tank arrangement 66 has an underside 128 formed on the outside of the bottom 84 on the first and second chambers 110, 112 respectively. It also has an upper side 130 opposite the lower side 128, which is formed on the outside of the cover plate 124.

A recess 132 (or recesses 132) is formed in the upper side 130 of the dirty tank arrangement 66 and thus in the cover plate 124. The recess or recesses 132 are channel-like and have a concave side surface 134.

The flip 102 has a mating element 136 (or a plurality of mating elements 136) that are used to cooperate with the recess 132.

A locking element 138 (fig. 5 to 7) is arranged on the mating element 136 or on several mating elements 136, for cooperation with the undercut 134. When mating element 136 is immersed with its locking element 138 into recess 132 and reaches into holding position 100, locking element 138 then rests against lateral recess 134. Thereby, the flip 102 is locked to prevent the upper side 130 of the dirty tank arrangement 66 from swinging away. A corresponding force effort must be applied to guide the locking element 138 away from the undercut 134.

The dirty tank arrangement 66 is positioned relative to the flap 102 and the receiving chamber 64 in such a way that, when the dirty tank arrangement 66 is positioned in the holding position 100 at the receiving chamber 64, the locking element 138 dips into the recess 132 and correspondingly rests against the side recess 134 and thus ensures the holding position 100.

In one embodiment, the dirty tank arrangement 66 has a step 140 (see FIG. 6) that mates with the step 96.

When the dirty tank arrangement 66 is placed in the receiving chamber 88, the receiving chamber wall 86 prevents movement of the dirty tank arrangement 66 in a direction transverse to the removal/placement direction 92 in the receiving chamber 88.

The positive locking is optionally supported by steps 96, 140.

The bottom 84 of the receiving chamber 64 prevents the dirty tank arrangement 66 from "losing" when placed.

When the flap 102 is closed and the locking element 138 is positioned in the recess 132 against the lateral recess 134, a mobility parallel to the removal direction 92 is then prevented in order to ensure the holding position 100 of the dirty tank arrangement 66 on the receiving chamber 64.

The flap 102 is particularly configured as a hold-down retainer that provides a defined positioning of the dirty tank arrangement 66 relative to the scrub roller unit 18.

The flap 102 is arranged or constructed in such a way that, in particular, in the holding position 100, a corresponding positioning force is applied to the flap 102 and, in particular, the dirty tank arrangement 66 is pressed against the bottom 84 and the wall region 94. Pressing against the wall region 94 is also supported by a step 96 on the wall region 94 in cooperation with a step 140 in the dirty tank arrangement 66.

It may be provided that the flap 102 is supported, for example, resiliently on the pivot bearing 106. Alternatively or additionally, the flap 102 can be configured on the counter element 136, for example, in such a way that a corresponding elastic force can be applied to the dirty tank arrangement 66.

The cleaning head 14 has a scraping guide 142 (see fig. 5) which acts on the cleaning roller unit 18 (and here on the first portion 72 and the second portion 74) and is used to disengage and feed the dirty liquid (in particular water with dirt particles) entrained by the cleaning roller unit 18 to an inlet nozzle 144 of the dirty liquid tank arrangement 66 which is fixed to the cleaning head 14 in the holding position 100. Thereby, the dirty liquid is then fed into the dirty liquid tank arrangement 66.

The inlet nozzle 144 of the dirty tank arrangement 66 is slit-like (fig. 9). It comprises a first portion 146, which is an input mouth for the first chamber 110, and a second portion 148, which is an input mouth for the second chamber 112.

In the embodiment shown in fig. 9, the first portion 146 and the second portion 148 each have a greater length along the longitudinal extension axis 116 than the associated chamber 110 or 112. The dirty tank arrangement 66 has walls at the ends of the inlet nozzle 144 on the first and second portions 146, 148, respectively, to enable dirty liquid that merges through the first and second portions 146, 148 of the inlet nozzle 144 to be transferred to the first or second chambers 110, 112, respectively.

A first portion 146 of the inlet nozzle 144 is associated with the first portion 72 of the scrub roller unit 18. A second portion 148 of the inlet nozzle 144 is associated with the second portion 74 of the scrub roller unit 18. The first portion 146 and the second portion 148 of the input mouth 144 are spaced apart from one another corresponding to the spacing of the first portion 72 and the second portion 74.

Preferably, the first portion 146 and the second portion 148 have respective wrap lengths along the rotational axis 58 that at least approximately correspond to the first portion 72 and the second portion 74 of the scrub roller unit 18, respectively.

The scraping guide 142 is configured such that dirt liquid is scraped off the cleaning roller assembly 18 by it and guided into the inlet nozzle 144.

It is possible here that, when the cleaning roller unit 18 rotates, a guiding effect is achieved by the action of centrifugal force and to some extent the dirty liquid is thrown into the dirty liquid tank arrangement 66.

The scrape guide 142 is spaced from the axis of rotation 58.

In an exemplary embodiment (see, for example, fig. 5), the scraping guide 142 extends to a depth into the coating 42 of the cleaning roller unit 18. This depth is at least 5% of the thickness D (fig. 5) of the cover 42 of the cleaning roller unit 18 in view of the wet state of the cover 42.

The scraping guide 142 is formed in particular by one or more edge elements 150. For example, an edge element 150 is assigned to each of the first portion 72 and the second portion 74 of the cleaning roller unit 18.

The edge element 150 is configured as a guide strip, which accordingly protrudes into the coating 42 on the first and second portions 72, 74 of the cleaning roller unit 18.

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

In one embodiment, an edge element 150 or a plurality of edge elements 150 are formed in a curved manner.

The scraping guide 142 forms, in particular, a wall of the inlet nozzle 144 with an edge element 150 or with a plurality of edge elements 150.

One or more edge elements 150 are formed rounded or chamfered at the edge facing the inlet mouth 144. The fibers of the wrap 42 are thereby protected and less force needs to be overcome as the scrub roller unit 18 rotates. Thereby achieving an energy saving effect again. Such rounding at the edges is designated in fig. 5 by reference numeral 151.

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

In the illustrated embodiment, the scrape guide 142 is disposed on the dirty tank assembly 66.

The dirty tank arrangement has a wall 152 which faces towards the wall region 94 in the holding position 100. One or more edge elements 150 are arranged on respective walls 152 of the first chamber 110 and the second chamber 112.

The corresponding scraping guide 142 is preferably arranged here outside the flap 124 of the dirty tank arrangement 66.

In this embodiment, when the dirty tank arrangement 66 is removed from the cleaning head 14, the scratch-off guide 142 is removed from the cleaning head.

Furthermore, a cover 154 is provided on the cleaning head 14, which is associated with the cleaning roller unit 18. The cover 154 is arranged immediately after the scraping off of the guide 142 (with one or more edge elements 150). The edge element 150 is formed in such a way that it matches the corresponding curvature of the cleaning roller unit 118 with the coating 42.

In principle, the covering element 154 contacts the covering 42 or penetrates it, the penetration depth preferably being smaller than the penetration depth T of the scraper guide 142.

In one embodiment, the fluid line 40 or fluid lines 40 open into a region 156 between the cover 154 and the scraping guide 142, in which region the cleaning roller unit 18 can then be acted upon with cleaning liquid from the tank device 34.

In particular, the region 146 has a length along the rotational axis 58 that corresponds at least approximately to the length of the first portion 72 or the second portion 74 of the cleaning roller unit 18, so that a uniform fluid loading of the cleaning roller unit 18 over its length can be achieved.

In the illustrated embodiment, the cover 154 is disposed over the dirty tank arrangement 66.

It must then be provided, accordingly, that a suitable coupling to the fluid line 40 or to a plurality of fluid lines 40 is achieved.

With respect to the direction of rotation 158 (see fig. 5) of the cleaning roller unit 18 during the cleaning operation, the wiping guide 142 is arranged with its edge element 150 or its edge elements 150 after the inlet nozzle 144. This makes it possible to "throw" the dirty liquid, which was previously caught by the cleaning roller unit 18 from the surface 16 to be cleaned and transported in the direction of the wiping guide 142, via the wiping guide 142 into the inlet nozzle 144 and thus into the dirty liquid tank arrangement 66.

In one embodiment, the cleaning roller unit 18 is also assigned a cleaning element 160, which is used to convey coarse dirt to the cleaning roller unit 18. This coarse dirt may then be entrained by the scrub roller unit 18.

The inlet nozzle 144 is arranged between the scraping guide 142 and the cleaning element 160.

In the illustrated embodiment, the sweeping element 160 is disposed on the scrub roller holder 60 at the holding area 62. The cleaning element 160 is designed such that it can act on the surface 16 to be cleaned for a cleaning function at least in the angular position of the surface cleaner 10 relative to the surface 16 to be cleaned about the longitudinal axis 20 (when the surface cleaner 10 is not standing steeply).

The cleaning element 160 is arranged, for example, pivotably on the cleaning roller holder 60 and/or is formed elastically.

In particular, the sweeping element 160 extends into the wrap 42 of the scrub roller unit 18. However, it may not be in contact with or spaced apart from the wrap 42.

With respect to the direction of rotation 158 of the cleaning roller unit 18, when the cleaning roller unit is driven in its rotational movement by the drive motor 28, the surface 16 to be cleaned is followed by the cleaning element 160 first, then by the guide region 162 of the cleaning roller holder 60, which is (hollow) cylindrical in shape and matches the cleaning roller unit 18, then by the feed nozzle 144, then by the scraping guide 142 with one or more edge elements 150, and then by the cover 154, wherein the region 156 is located between the cover 154 and the scraping guide 142.

In the illustrated embodiment, the surface cleaning machine 10 is constructed without suction. The dirty liquid entrained by the cleaning roller unit 18 is not sucked into the dirty liquid tank arrangement 66 by the additional suction machine, but merely scraped off the guide 142 for feeding the dirty liquid into the dirty liquid tank arrangement 66.

In principle, however, the feed can still be supported by an additional suction machine.

The face cleaner 10 operates as follows:

during a cleaning operation, the dirty tank arrangement 66 is secured to the cleaning head 14 in the hold position 100.

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

The scrub roller unit 18 is loaded with a scrub liquid from the tank device 34.

When the wetted cover 42 of the scrub roller unit 18 is applied to the dirt, the dirt on the surface 16 to be cleaned is wetted to facilitate its disengageability.

Rotation of the scrub roller unit 18 causes a mechanical action on the dirt on the surface 16 to be cleaned to achieve better disengageability from the surface 16 to be cleaned.

The cleaning element 160 may be used to convey possible coarse dirt to the scrub roller unit 18.

The dirty liquid (dirt particles, cleaning liquid with detached dirt) is entrained by the cleaning roller unit 18 and is detached from the cleaning roller unit 18 on the scrape-off guide 142 and is guided (in particular under the influence of centrifugal forces) into the inlet nozzle 144 and from there into the dirty liquid tank arrangement 66. The scraping guide 142 causes the dirty liquid to be detached from the cover 42 of the cleaning roller unit 18 by scraping.

The feeding of dirty liquid into the dirty liquid tank arrangement 66 is particularly performed without a suction machine.

The dirty tank arrangement 66 is removably positioned on the cleaner head 14.

Flip 102 provides assurance that the position 100 is maintained. In the holding position 100, the inlet nozzle 144 of the dirty liquid tank arrangement 66 is oriented in relation to the scraping guide 142 in such a way with respect to the cleaning roller unit 18 that a corresponding disengagement function and feed function are achieved as described above.

The function of the flap 102 as a pressing holder provides for the edge element 150 or edge elements 150 to be pressed into the covering 42 by a depth T in order to achieve an optimum release function by scraping.

In particular, the scrape guide 142 is disposed on the dirty tank assembly 66 and is removable from the cleaner head 14 with the dirty tank assembly.

The flap 102 is pushed with its counter element 136 and a locking element 138 arranged on the counter element onto the upper side 130 of the dirty tank arrangement 66 and thereby ensures a holding position in which the above-described relative positioning of the scraper guide 142 with respect to the cleaning roller unit 18 is also achieved.

In the holding position 100, a positive holding of the dirty tank arrangement 66 on the receiving chamber 64 is provided.

To remove the dirty tank arrangement 66 (fig. 3, 6, 7), the flip 102 is opened. The flip cover pivots in the direction of the device body 12. In order to guide the locking element 138 out of the recess 132 with the lateral concavity 134, a corresponding elastic deformation of the counter element 136 must be performed.

With the flip 102 fully open (fig. 6), the dirty tank arrangement 66 (see fig. 3) may then be removed.

By opening the cover plate 124 of the dirty tank arrangement 66, the dirty tank arrangement can be emptied and, if necessary, cleaned, for example by flushing.

The volume of the dirty tank means 66 is for example about 150ml.

The surface cleaner 10 has a relatively low energy requirement because there is no need to provide a suction machine and the dirty liquid is fed into the dirty liquid tank arrangement 66 directly from the cleaning roller unit 18 with a "minimum stroke".

Thus, the face cleaner 10 can operate optimally with the rechargeable battery device 44.

Wet cleaning of hard floors can be performed with a high degree of automation by means of a surface cleaner according to the invention. The force expenditure during wiping is reduced or eliminated by mechanical assistance via the driven rotating roller 18. Wetting the scrub roller unit 18 enables an operator to perform a cleaning process without touching dirty liquid.

Furthermore, an automatic cleaning of the cleaning roller unit 18 is achieved during a cleaning operation within a certain angle.

A dirty tank arrangement 66 is arranged between the scrub roller unit 18 and the drive motor 28. The longitudinal extension of the inlet mouth 144 parallel to the longitudinal extension axis 116 is parallel to the rotation axis 58 of the cleaning roller unit 18 and transversely and in particular perpendicularly to the motor axis 46. Furthermore, the longitudinal extension axis of the input mouth 144 is transverse and in particular perpendicular to the longitudinal axis 20.

It may be provided that the drive motor 28 is also used to drive one or more suction turbines which are in turn in fluid connection with the interior chamber of the dirty tank arrangement 66 in order to generate a negative pressure which improves the feeding of dirty liquid into the dirty tank arrangement.

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

The cleaning element 160 may also be disposed on the dirty tank arrangement 66.

Overload protection may be provided. The overload protection is, for example, designed as a mechanical overload protection, which includes, for example, a slip clutch. Alternatively or additionally, an electronic overload protection may be provided, which, for example, performs an overcurrent shutdown.

In normal cleaning operation, the tank 34 is arranged above the cleaning head 14 with respect to the direction of gravitational force. The cleaning liquid can thus flow from the tank arrangement 34 to the cleaning head 14 without a pump under the influence of gravity, in order to load the surface 16 to be cleaned with cleaning liquid directly or indirectly via the cleaning roller unit 18.

The surface cleaning machine 10 can be configured such that the cleaning element 160 is only active if a specific angular position is set relative to the surface 16 to be cleaned relative to the longitudinal axis 20 and in particular the angle between the surface 16 to be cleaned and the longitudinal axis is smaller than a maximum angle.

List of reference numerals

10. Surface cleaning machine

12. Equipment body

14. Cleaning head

16. Surface to be cleaned

18. Cleaning roller unit

20. Longitudinal axis

22. Retaining rod device

24. Holding rod

26. Handle grip

28. Driving motor

30. Shell body

32. Retainer

34. Tank device for cleaning liquid

36. Pipe housing

38. Valve device

39. Filtering device

40. Fluid circuit

42. Coating material

44. Battery device

46. Motor axis

48. Swing axis

50. Double arrow

52. Inner sleeve

54. Outer sleeve

56. Swing bearing

58. Axis of rotation

60. Cleaning roller holder

62. Holding area

64. Accommodating chamber

66. Dirty liquid tank device

68. Transmission device

70. Shaft

72. First part

74. Second part

76. Intermediate region

78. Sleeve barrel

80. A first end side

82. A second end side

84. Bottom part

86. A chamber wall part

88. Accommodating chamber

90. Side of the vehicle

92. Direction of removal/insertion

94. Wall region

96. Ladder type

98. Fixing device

100. Hold in place

102. Flip cover

104. Swing axis

106. Swing bearing

108. Direction of

110. First chamber

112. A second chamber

114. Concave part

116. Longitudinal extension axis

118. A first outer end

120. Second outer end portion

122. Bridging piece

124. Cover plate

126a swing bearing

126b swing bearing

128. Underside of the lower part

130. Upper side of

132. Concave part

134. Concave side

136. Mating element

138. Locking element

140. Ladder type

142. Scraping guiding device

144. Input mouth

146. First part

148. Second part

150. Edge element

151. Rounded portion and chamfer portion

152. Wall portion

154. Covering piece

156. Region(s)

158. Direction of rotation

160. Cleaning element

162. Guide area

Claims

1. A surface cleaning machine comprising a cleaning head (14) having a driven cleaning roller unit (18) with an axis of rotation (58), wherein, in a cleaning operation, the surface cleaning machine is supported on a surface (16) to be cleaned only via the cleaning roller unit (18), the surface cleaning machine further comprises a drive motor (28) for the cleaning roller unit (18) and a dirty liquid tank arrangement (66) which is arranged in a removable manner on the cleaning head (14), characterized in that a scrape-off guide (142) for dirty liquid is provided, which acts on the cleaning roller unit (18) and which is arranged at an inlet nozzle (144) of the dirty liquid tank arrangement (66) and which is configured such that dirty liquid is guided into the dirty liquid tank arrangement (66) without a suction machine,

The cleaning roller holder (60) comprises a receiving chamber (64) with a receiving cavity (88) for the dirty liquid tank arrangement (66),

the receiving chamber (64) is associated with a fastening device (98) by means of which the dirty tank arrangement (66) can be fastened to the receiving chamber (64), wherein the fastening device (98) is designed in a releasable manner for the removability of the dirty tank arrangement (66) from the cleaning head (14).

2. The face cleaning machine according to claim 1, characterized in that a longitudinally extending axis (116) of the dirty liquid tank arrangement (66) is oriented parallel to a rotational axis (58) of the cleaning roller unit (18).

3. The face cleaning machine according to claim 1 or 2, characterized in that a motor axis (46) of the drive motor (28) is oriented transversely to a longitudinally extending axis (116) of the dirty tank arrangement (66).

4. The face cleaning machine according to claim 1, characterized in that the dirty liquid tank arrangement (66) is arranged between the cleaning roller unit (18) and the drive motor (28).

5. The surface cleaning machine according to claim 4, characterized by a transmission (68) for torque transmission, which is arranged between the drive motor (28) and the cleaning roller unit (18), the dirty liquid tank arrangement (66) having an upper side (130) and a lower side (128), wherein the lower side (128) faces the cleaning roller holder (60) of the cleaning roller unit (18) and the upper side (130) faces away from the lower side (128), and the transmission (68) is guided past the lower side (128) or the upper side (130) of the dirty liquid tank arrangement (66).

6. The surface cleaning machine according to claim 5, characterized in that the dirty tank arrangement (66) has a recess (114) in which at least one partial region of the transmission (68) is positioned with the dirty tank arrangement (66) fixed to the cleaning head (14).

7. The surface cleaning machine according to claim 1, characterized by an equipment body (12) on which the cleaning head (14) is arranged, wherein at least one of the following is positioned on the equipment body (12): a tank device (34) for a cleaning liquid; valve means (38) for delivering cleaning liquid to the cleaning head (14); -battery means (44) for said drive motor (28); a holding rod device (22) for holding and/or guiding the surface cleaning machine; a filter device (39) for the cleaning liquid; at least a portion of the drive motor (28).

8. The face cleaning machine according to claim 7, characterized in that the drive motor (28) is arranged at least partially between the machine body (12) and the cleaning head (14).

9. The face cleaning machine according to claim 7, characterized in that the cleaning head (14) can be pivoted about a pivot axis (48) relative to the drive motor (28) and/or the machine body (12).

10. The face cleaning machine according to claim 1 or 2, characterized in that the motor axis (46) of the drive motor (28) is oriented perpendicularly to the longitudinal extension axis (116) of the dirty tank arrangement (66).

11. The surface cleaning machine according to claim 1, characterized in that the fastening device (98) is configured to hold the dirty tank arrangement (66) in the holding position (100) at the receiving chamber (64) by form-locking.

12. The surface cleaning machine of claim 11, wherein the securing means (98) is or includes at least one flap (102) that is swingable.

13. The face cleaning machine according to claim 12, characterized in that the swivel axis (104) of the at least one flap (102) is oriented at least approximately parallel to the rotational axis (58) of the cleaning roller unit (18).

14. The surface cleaning machine of claim 12, characterized in that the at least one flap (102) acts on an upper side (130) of the dirty tank arrangement (66) facing away from the underside (128), wherein the underside (128) of the dirty tank arrangement (66) faces toward the bottom (84) of the receiving chamber (64) when the dirty tank arrangement (66) is secured to the cleaning head (14).

15. The face cleaning machine according to claim 12, characterized in that the at least one flap (102) is configured as a press holder which positions the dirty liquid tank arrangement (66) in a defined manner relative to the cleaning roller unit (18) and/or in the receiving cavity (88).

16. The surface cleaning machine according to claim 14, characterized in that the at least one flap (102) is spring-loaded and/or elastically configured to hold the dirty tank arrangement (66) in the receiving chamber (88) with a pretension.

17. The surface cleaning machine according to claim 14, characterized in that at least one recess (132) is arranged on the upper side (130) of the dirty tank arrangement (66), and in that the at least one flap (102) has at least one counter element (136) for sinking into the at least one recess (132).

18. The surface cleaning machine of claim 17, characterized in that the at least one recess (132) has at least one side recess (134) and the at least one counter element (136) has a locking element (138) which mates with the at least one side recess (134) and which prevents the mobility of the dirty tank arrangement (66) in a direction (92) away from the bottom (84) of the receiving chamber (64) when the at least one flip (102) is closed.

19. The surface cleaning machine according to claim 11, characterized in that the receiving chamber (64) and the dirty tank arrangement (66) are configured to be matched to one another, so that in a holding position (100) of the dirty tank arrangement (66) at the receiving chamber (64) a movability of the dirty tank arrangement (66) transversely to a vertical line of the bottom (84) of the receiving chamber (64) is prevented.

20. The surface cleaner of claim 1, wherein the dirty tank arrangement (66) has one or more cover plates (124).

21. The surface cleaning machine according to claim 1, characterized in that the dirty tank arrangement (66) is constructed as a unit.

22. The surface cleaning machine according to claim 1, characterized in that the cleaning roller unit (18) is constructed in two parts with a first part (72) and a second part (74).

23. The surface cleaning machine according to claim 22, characterized in that a first chamber (110) of the dirty tank arrangement (66) is assigned to a first portion (72) of the cleaning roller unit (18) and a second chamber (112) of the dirty tank arrangement (66) is assigned to a second portion (74) of the cleaning roller unit (18).

24. The face cleaning machine according to claim 22, characterized in that the drive motor (28) acts on an intermediate region between the first portion (72) and the second portion (74).

25. The surface cleaning machine according to claim 1, characterized in that the scraping guide means (142) are arranged and constructed to cause dirty liquid entrained by the cleaning roller unit (18) to be separated from the cleaning roller unit (18) by scraping and guided towards an input mouth (144) of the dirty liquid tank arrangement (66).

26. The surface cleaning machine according to claim 1, characterized in that the scraping guide (18) is arranged after the inlet nozzle (144) with respect to the direction of rotation (158) of the cleaning roller unit (18).

27. The surface cleaning machine according to claim 1, characterized in that the scraping guide (142) protrudes into the coating (42) of the cleaning roller unit (18).

28. The surface cleaning machine of claim 27, characterized in that the scraping guide (142) is rounded or chamfered at the edge of the coating (42) facing the inlet nozzle (144).

29. The surface cleaning machine of claim 27, characterized in that, for wet packs (42), the scraping guide (142) projects into the pack (42) with a depth (T) of at least 5% of the thickness (D) of the pack (42).

30. A surface cleaning machine according to claim 1, characterized in that the scraping guide means (142) are arranged on the dirty tank means (66) and are removable from the cleaning head (14) together with the dirty tank means (66).

31. The surface cleaning machine according to claim 1, characterized in that the scraping guide (142) is formed by one or more edge elements (150).

32. A surface cleaning machine according to claim 1, characterized in that at least one sweeping element (160) is arranged on the cleaning head (14), by means of which coarse dirt is conveyed to the cleaning roller unit (18) for entrainment by the cleaning roller unit (18).

33. The surface cleaning machine of claim 32, characterized in that the inlet mouth (144) of the dirty tank arrangement (66) is positioned between the scrape-off guide (142) and the at least one cleaning element (160).

34. A cleaning machine according to claim 1, characterized by battery means (44) for supplying the drive motor (28) with electrical energy.

35. The face cleaning machine according to claim 34, characterized in that the drive motor (28) is arranged between the battery means (44) and the cleaning head (14).

36. A surface cleaning machine according to claim 1, characterized by a tank device (34) for cleaning liquid.

37. The surface cleaning machine according to claim 36, characterized in that the tank means (34) for cleaning liquid is positioned above the cleaning roller unit (18) with respect to the direction of gravity when the surface cleaning machine is operated in a cleaning operation with a defined placement of the cleaning roller unit (18) on the surface (16) to be cleaned.

38. The face cleaning machine according to claim 1, characterized in that the inlet mouth (144) of the dirty liquid tank arrangement (66) has a longitudinal extension direction oriented parallel to the rotational axis (58) of the cleaning roller unit (18).

39. The surface cleaning machine of claim 1 having a configuration configured as a manually operated or manually guided surface cleaning machine.

40. The face cleaning machine according to claim 7, characterized in that the drive motor (28) is arranged at least partially between the machine body (12) and the cleaning head (14), the drive motor being arranged partially in the machine body (12).

41. The surface cleaning machine according to claim 7, characterized in that the cleaning head (14) can be pivoted about a pivot axis (48) relative to the drive motor (28) and/or the machine body (12), wherein the pivot axis (48) is oriented parallel or coaxial to a motor axis (46) of the drive motor (28).

42. The surface cleaning machine according to claim 12, characterized in that the at least one flap (102) is configured as a pressing holder which positions the dirty liquid tank arrangement (66) in a defined manner relative to the cleaning roller unit (18) and/or in the receiving cavity (88) and presses the dirty liquid tank arrangement (66) against the bottom (84) of the receiving cavity (64) in a holding position (100).

43. The surface cleaning machine of claim 1, characterized in that the scraping guide (142) is formed by one or more edge elements (150), wherein an edge element (150) at least partially forms a wall of the inlet nozzle (144).

44. The face cleaning machine of claim 34, wherein the battery device is a rechargeable battery device.