EP4025105B1 - Floor cleaning machine and method for operating a floor cleaning machine - Google Patents

Description

The invention relates to a floor cleaning machine, comprising a floor head, at least one cleaning roller which is arranged on the floor head, a tank device which is arranged on the floor head, and at least one sweeping element which is assigned to the at least one cleaning roller.

The invention also relates to a method for operating a floor cleaning machine, in which a cleaning roller is arranged on a floor head and coarse dirt is fed to the rotating cleaning roller via a sweeping element.

The WO 2018/099567 A1 discloses a cleaning device with a moveable skid member for dirty fluid.

The U.S. 2017/0071437 A1 reveals a cleaning robot.

The WO 2008/135120 A1 discloses a mobile sweeper with brush roller and sweeping edge.

The U.S. 2004/0181888 A1 discloses another cleaning device.

The US 2003/0028982 A1 reveals a sweeper.

The EP 1 179 314 A1 discloses a sweeper with brush roller.

The U.S. 4,701,969 discloses a sweeper with a rotating brush.

More sweepers are in the CN 104939758 and CN 2899698 disclosed.

The U.S. 2006/0150363 A1 discloses a floor cleaning machine.

The CN 2516091 discloses a floor sweeping machine.

From the WO 2016/058901 A1 , WO 2016/058856 A1 , WO 2017/063663 A1 , WO 2016/058879 A1 and the WO 2016/058956 A1 surface cleaning machines are known. From the WO 2016/058907 A1 a surface cleaning machine is also known. A floor cleaning machine according to the preamble of claim 1 is made, for example US-A-20030204923 known.

The object of the invention is to provide a floor cleaning machine of the type mentioned at the outset, which has an optimized coarse dirt pick-up function.

In the case of the floor cleaning machine mentioned at the outset, this object is achieved according to the invention in that the at least one sweeping element is arranged on the tank device and that at least a partial area of the tank device, on which the at least one sweeping element is arranged, can be moved relative to the floor head during cleaning operation.

It has been shown that it is advantageous if the at least one sweeping element is positioned at a defined, fixed distance from the floor to be cleaned with respect to a sweeping edge. Due to the movable arrangement of the tank device or the corresponding partial area of the tank device to the floor head, a corresponding fixed distance can be set, even if the diameter of the cleaning roller changes, for example due to wear, or an adjustment to manufacturing tolerances with regard to the cleaning roller or a bearing of the cleaning roller possible.

In particular, it is provided that the at least one sweeping element and the tank device are designed in such a way that the at least one sweeping element is at a defined, fixed distance from a floor to be cleaned during a cleaning operation. It has been shown that when this fixed distance is too small, then the at least one sweeping element gets stuck or can get caught, for example, at joints or transitions on the floor to be cleaned. If this distance is too large, dirt particles can be run over and not picked up. Setting a defined fixed distance results in an optimized mode of operation for an operator on the one hand, with the snagging or the like on uneven floors such as joints being reduced, and on the other hand an optimized cleaning result with regard to coarse dirt results.

It has been shown that it is advantageous if the defined distance from the floor is greater than zero and in particular greater than 0.5 mm and in particular greater than 0.7 mm and in particular is approximately 1 mm. This defined distance is in particular a vertical distance between a sweeping edge of the at least one sweeping element and the ground. This effectively prevents snagging on uneven floors.

It has also proven to be favorable if the defined distance is less than 1.5 mm and in particular less than 1.3 mm and in particular is approximately 1 mm. This results in an optimized cleaning result with regard to coarse dirt. Corresponding particles can be collected via the at least one sweeping element, fed to the at least one cleaning roller and taken away by it.

In an advantageous embodiment, the at least one sweeping element is arranged on a floor or on a side wall of the tank device. The at least one sweeping element can thus be positioned in a simple manner in relation to the assigned at least one cleaning roller.

It is particularly advantageous if at least one support element for a floor to be cleaned is arranged on the at least one sweeping element and/or the tank device, which supports the at least one sweeping element at a defined, fixed distance from the floor to be cleaned. The at least one support element contacts the floor to be cleaned. This results in an optimized cleaning result that is easy to use for a user. Due to the mobility of the tank device or the partial area of the tank device on which the at least one sweeping element is arranged relative to the floor head, this defined distance is (and is) fixed even with different diameters of the at least one cleaning roller.

• das mindestens eine Abstützelement ist als Rippe an dem mindestens einen Kehrelement und/oder der Tankeinrichtung ausgebildet;
• es sind eine Mehrzahl von Abstützelementen vorgesehen;
• zwischen benachbarten Abstützelementen liegt ein Freibereich, welcher den zu reinigenden Boden nicht kontaktiert;
• die Abstützelemente sind in einer Reihe angeordnet, wobei insbesondere eine Längsrichtung der Reihe mindestens näherungsweise parallel zu einer Drehachse der mindestens einen Reinigungswalze ist;
• das mindestens eine Abstützelement ist als Gleitelement oder Rollelement für den zu reinigenden Boden ausgebildet.

It is advantageous if at least one of the following is provided:

• the at least one support element is designed as a rib on the at least one sweeping element and/or the tank device;
• a plurality of support members are provided;
• between adjacent supporting elements there is a free area which does not contact the floor to be cleaned;
• the support elements are arranged in a row, with in particular a longitudinal direction of the row being at least approximately parallel to an axis of rotation of the at least one cleaning roller;
• the at least one support element is designed as a sliding element or rolling element for the floor to be cleaned.

A fixed distance between the at least one sweeping element and the floor to be cleaned is provided by the supporting element or elements. The result is an optimized cleaning effect, even for coarse dirt particles, with the floor cleaning machine being easy to operate. The at least one support element slides over the floor to be cleaned or rolls over it. A plurality of support elements results in an optimized positioning of the at least one sweeping element. The free space between adjacent support elements minimizes the frictional force with respect to the floor to be cleaned or the influence of the support elements on the floor to be cleaned minimized. The arrangement in a row, which is seated, for example, on the at least one sweeping element, results in a simple structural design.

It is particularly advantageous if the tank device or the partial area of the tank device on which the at least one sweeping element is arranged is mounted in a floating manner on a tank device holder of the floor head. This results in a defined, fixed distance between a sweeping edge of the at least one sweeping element and the floor to be cleaned, even with different diameters of the at least one cleaning roller (e.g. due to wear or manufacturing tolerances).

In a structurally simple design, the tank device or the partial area of the tank device on which the at least one sweeping element is arranged is mounted hanging on the floor head. A corresponding floating mounting with mobility of the tank device or the partial area of the tank device can thus be achieved in a simple manner, in order in turn to set a defined, fixed distance between a sweeping edge of the sweeping element and the ground.

• die z-Richtung ist quer und insbesondere senkrecht zu einer Drehachse der mindestens einen Reinigungswalze orientiert;
• die z-Richtung ist quer und insbesondere mindestens näherungsweise senkrecht zu einer Auflageebene der mindestens einen Reinigungswalze für einen zu reinigenden Boden orientiert;
• die z-Richtung ist mindestens näherungsweise parallel zu einer Entnahmerichtung der Tankeinrichtung von dem Bodenkopf orientiert.

It is particularly advantageous if the tank device or the partial area of the tank device on which the at least one sweeping element is arranged is mounted on the floor head such that it can move at least in a z-direction, with at least one of the following:

• the z-direction is oriented transversely and in particular perpendicularly to an axis of rotation of the at least one cleaning roller;
• the z-direction is oriented transversely and in particular at least approximately perpendicularly to a support plane of the at least one cleaning roller for a floor to be cleaned;
• the z-direction is oriented at least approximately parallel to a removal direction of the tank device from the bottom head.

A fixed distance between a sweeping edge of the sweeping element and a floor to be cleaned can thus be set in a cleaning operation in a simple manner.

It is possible that the tank device or the partial area of the tank device on which the at least one sweeping element is arranged is also movably mounted on the floor head in at least one further direction transverse to the z-direction. This results in a further tolerance compensation.

In particular, it is provided that the at least one sweeping element is arranged and designed in such a way that it feeds dirt particles to the at least one cleaning roller, such dirt particles being carried along by the at least one cleaning roller as a result of the rotation of the at least one cleaning roller. The at least one sweeping element collects dirt particles to a certain extent and makes them “available” to the at least one cleaning roller, the at least one cleaning roller then in turn transporting the dirt particles so that they can finally be fed to the tank device.

In an advantageous embodiment, the tank device is designed as a tank device for dirty fluid. This is in particular adjacent to the at least one cleaning roller. Dirty fluid (including possibly coarse dirt particles) can then be conveyed directly from the at least one cleaning roller into the tank device. In particular, this promotion can be carried out without a fan.

In an advantageous embodiment, at least one supply channel for dirty fluid is provided from the at least one cleaning roller to a receiving space of the tank device. It can be so effective Detach the dirty fluid from the at least one cleaning roller with a short flow path and couple it into the tank device.

A sealing device is advantageously provided, which is arranged on the tank device or the partial area of the tank device on which the at least one sweeping element is seated, and which seals the at least one feed channel independently of a position of the tank device or the partial area of the tank device relative to the bottom head opposite a coupling element seals for the at least one feed channel. As a result, a fluid-tight supply of dirty fluid to the receiving space of the tank device can be achieved even with a movable tank device or movable partial area of the tank device (in particular with mobility relative to the coupling element).

• die Dichtungseinrichtung ist beweglich und/oder elastisch ausgebildet;
• an dem Einkopplungselement sitzt mindestens ein Abstreifer für die mindestens eine Reinigungswalze;
• die Tankeinrichtung oder der Teilbereich der Tankeinrichtung, an welchem das mindestens eine Kehrelement angeordnet ist, ist in einem Reinigungsbetrieb beweglich zu dem Einkopplungselement.

In particular, the coupling element sits on the base head, with in particular at least one of the following:

• the sealing device is designed to be movable and/or elastic;
• at least one scraper for the at least one cleaning roller is seated on the coupling element;
• the tank device or the partial area of the tank device on which the at least one sweeping element is arranged can be moved relative to the coupling element in a cleaning operation.

In particular, dirty fluid can be detached from the cleaning roller in an optimized manner. A fluid-tight at least one supply channel for supplying dirty fluid into a receiving space of the tank device can be achieved in a simple manner. The tank device can be made movable in order to create a fixed distance between a sweeping edge and a floor to be cleaned, regardless of the diameter of the at least one cleaning roller.

In a structurally simple embodiment, the tank device or the partial area of the tank device on which the at least one sweeping element is arranged is power-driven and in particular driven by gravity, or, for example by a spring device, is pressed in the direction of a contact plane of the at least one cleaning roller on a floor to be cleaned. It can thus adjust the position of the tank device itself in a simple manner in order to maintain a fixed distance between a sweeping edge of the sweeping element and the floor to be cleaned, regardless of the diameter of the at least one cleaning roller.

In an advantageous embodiment, a stripping device is provided for stripping dirty fluid from the at least one cleaning roller and for coupling it into the tank device. The at least one cleaning roller can to a certain extent be wrung out by the scraping device in order to be able to remove dirt fluid from it.

In a favorable embodiment, the at least one cleaning roller has a textile trimming, such as a microfiber trimming, and in particular a scraper of a scraping device is immersed in the textile trimming. This results in an optimized detachment effect for dirty fluid from the at least one cleaning roller.

In one embodiment, the at least one cleaning roller is designed in two parts and a central drive is provided. This enables cleaning close to the edge. The at least one cleaning roller can be designed and positioned in such a way that it reaches a lateral end of the floor head.

It is favorable if a tank device for cleaning liquid and a supply device for cleaning liquid are provided from the tank device to the at least one cleaning roller and/or to a floor to be cleaned. An improved result results due to a wiping effect cleaning result. Dirt can be dissolved on a surface to be cleaned by means of cleaning liquid (which is in particular fresh water or fresh water with an addition of, for example, a surfactant-based cleaning agent). The at least one cleaning roller acts mechanically on the dirt due to its rotation.

It is favorable if a pin bar with pins for picking up hair is provided, with pins in particular lying against a textile trimming or being immersed in the textile trimming of the at least one cleaning roller. Hair can thus be picked up and collected from the floor to be cleaned. The result is an optimized cleaning result.

It is advantageous if, based on a normal direction of rotation of the at least one cleaning roller in a cleaning operation, the at least one sweeping element is connected upstream of a scraper for the at least one cleaning roller. Dirt particles which are collected by the at least one sweeping element can thus be taken along by the at least one cleaning roller and thereby taken away from the sweeping element. These then reach the scraper, where a detachment of dirty fluid (including the dirt particles) is possible.

• eine erste Drehachse der ersten Reinigungswalze und eine zweite Drehachse der zweiten Reinigungswalze sind parallel zueinander orientiert;
• in einem normalen Betriebsmodus der Bodenreinigungsmaschine drehen sich die erste Reinigungswalze und die zweite Reinigungswalze gegenläufig.

In one embodiment, a first cleaning roller and a second cleaning roller are provided, with the second cleaning roller being arranged on the floor head at a distance from the first cleaning roller, in particular with at least one of the following:

• a first axis of rotation of the first cleaning roller and a second axis of rotation of the second cleaning roller are oriented parallel to one another;
• In a normal operating mode of the floor cleaning machine, the first cleaning roller and the second cleaning roller rotate in opposite directions.

This results in an optimized cleaning result. In particular, the tank device is arranged between the first cleaning roller and the second cleaning roller. This allows it to be positioned "stably".

In particular, a first sweeping element is assigned to the first cleaning roller and/or a second sweeping element is assigned to the second cleaning roller. The first sweeping element and the second sweeping element are advantageously arranged on the same tank device.

In one embodiment, the floor cleaning machine is hand-held and hand-guided. A holding device for an operator is provided, which is arranged on the floor head (and in particular is arranged pivotably), the floor cleaning machine being operable by a standing operator.

In an alternative embodiment, the floor cleaning machine is designed to be self-propelled and self-steering and in particular designed as a wiping robot.

According to the invention, a method for operating a floor cleaning machine is provided, in which a cleaning roller is arranged on a floor head and coarse dirt is fed to the rotating cleaning roller via a sweeping element, the sweeping element being arranged on a tank device and the tank device or a partial area of the tank device on which the sweeping element is arranged, is movable to the floor head in a cleaning operation, and in which there is a defined, fixed spacing of the sweeping element from the floor in the cleaning operation.

The method according to the invention has the advantages already explained in connection with the floor cleaning machine according to the invention. In particular, the method according to the invention can be carried out on the floor cleaning machine according to the invention or the floor cleaning machine according to the invention can be operated with the method according to the invention.

It is particularly advantageous if the sweeping element is supported by at least one support element on the floor to be cleaned (during cleaning operation), the at least one support element being arranged on the sweeping element and/or the tank device. The defined, fixed distance between a sweeping edge of the sweeping element and the floor to be cleaned can thus be achieved in a simple manner. This defined distance remains the same even if a diameter of the at least one cleaning roller changes, for example due to wear, or if there are manufacturing tolerances with regard to cleaning rollers.

Figur 1

eine Teildarstellung eines Ausführungsbeispiels einer erfindungsgemäßen Bodenreinigungsmaschine, wobei eine Halte(stab)einrichtung in einer Teildarstellung gezeigt ist und bei einer zweiteiligen (vorderen) Reinigungswalze nur ein Teil gezeigt ist;

Figur 2

eine Seitenansicht der Bodenreinigungsmaschine gemäß Figur 1;

Figur 3

eine vergrößerte Darstellung des Bereichs A gemäß Figur 2 im Moment des Aufsetzens der Reinigungswalze auf einen zu reinigenden Boden;

Figur 4

die gleiche Ansicht wie Figur 3, wobei die Reinigungswalze länger aufgesetzt ist und ihr Durchmesser sich verringert hat;

Figur 5

ein Ausführungsbeispiel einer Tankeinrichtung oder eines Teilbereichs einer Tankeinrichtung in perspektivischer Darstellung;

Figur 6

eine Seitenansicht der Tankeinrichtung oder des Teilbereichs gemäß Figur 5;

Figur 7

eine Schnittansicht längs der Linie 7-7 gemäß Figur 6;

Figur 8

eine Schnittansicht der Bodenreinigungsmaschine gemäß Figur 1 im Bereich der vorderen Reinigungswalze in einer ersten Stellung einer Pinleiste;

Figur 9

die gleiche Ansicht wie Figur 8 in einer zweiten Stellung der Pinleiste;

Figur 10

die gleiche Ansicht wie Figur 8 in einer dritten Stellung der Pinleiste;

Figur 11

eine perspektivische Darstellung eines Ausführungsbeispiels einer Pinleiste;

Figur 12:

eine weitere perspektivische Darstellung der Pinleiste gemäß Figur 11;

Figur 13:

eine weitere perspektivische Darstellung der Pinleiste gemäß Figur 11;

Figur 14

eine Seitenansicht der Pinleiste gemäß Figur 11;

Figur 15

eine Vorderansicht der Pinleiste gemäß Figur 11;

Figur 16

ein weiteres Ausführungsbeispiel einer erfindungsgemäßen Bodenreinigungsmaschine (in der Ausbildung als selbstfahrende und selbstlenkende Bodenreinigungsmaschine); und

Figur 17

ein weiteres Ausführungsbeispiel einer handgehaltenen und handgeführten Bodenreinigungsmaschine.

The following description of preferred embodiments serves to explain the invention in more detail in conjunction with the drawings. Show it:

figure 1

a partial representation of an embodiment of a floor cleaning machine according to the invention, wherein a holding (rod) device is shown in a partial representation and in a two-part (front) cleaning roller only one part is shown;

figure 2

a side view of the floor cleaning machine according to FIG figure 1 ;

figure 3

an enlarged representation of the area A according to FIG figure 2 at the moment the cleaning roller is placed on a floor to be cleaned;

figure 4

the same view as figure 3 , where the cleaning roller is placed longer and its diameter has reduced;

figure 5

an embodiment of a tank device or a portion of a tank device in a perspective view;

figure 6

a side view of the tank device or the partial area according to FIG figure 5 ;

figure 7

a sectional view taken along line 7-7 of FIG figure 6 ;

figure 8

a sectional view of the floor cleaning machine according to FIG figure 1 in the area of the front cleaning roller in a first position of a pin strip;

figure 9

the same view as figure 8 in a second position of the pin strip;

figure 10

the same view as figure 8 in a third position of the pin bar;

figure 11

a perspective view of an embodiment of a pin strip;

Figure 12:

another perspective view of the pin strip according to FIG figure 11 ;

Figure 13:

another perspective view of the pin strip according to FIG figure 11 ;

figure 14

a side view of the pin strip according to FIG figure 11 ;

figure 15

a front view of the pin strip according to FIG figure 11 ;

figure 16

another embodiment of a floor cleaning machine according to the invention (in the form of a self-propelled and self-steering floor cleaning machine); and

figure 17

another embodiment of a hand-held and walk-behind floor cleaning machine.

An embodiment of a floor cleaning machine according to the invention, which in the figures 1 and 2 shown in a partial representation and denoted by 10 is designed as a hand-held and hand-guided floor cleaning machine, which can be operated by a standing operator.

The floor cleaning machine 10 comprises a floor head 12. At least one cleaning roller 14 is arranged on the floor head 12. In the exemplary embodiment shown, a first cleaning roller 14a and a second cleaning roller 14b are rotatably mounted on the floor head 12. The first cleaning roller 14a and the second cleaning roller 14b are spaced apart and oriented parallel to one another.

The first cleaning roller 14a is rotatable about a first axis of rotation 16a. The second cleaning roller 14b can be rotated about a second axis of rotation 16b. The first axis of rotation 16a and the second axis of rotation 16b are parallel to each other.

A first shaft 18 is arranged on the bottom head 12 for the first cleaning roller 14a. A second shaft (not visible in the drawings) is associated with the second cleaning roller 14b. The first shaft 18 and the second shaft are each connected to a drive motor via a gear mechanism. This drive motor is located in particular on the floor head 12.

Provision is made here for the first cleaning roller 14a and the second cleaning roller 14b to be operated in opposite directions, at least for a normal operating mode of the floor cleaning machine 10, and in particular to be operated at the same rotational speed.

With regard to exemplary embodiments for the drive motor and the transmission device, reference is made to the unpublished German patent application no. 10 2019 109 946.3 of April 15, 2019 of the same applicant. Reference is made to this document in its entirety.

In one embodiment, the first cleaning roller 14a and the second cleaning roller 14b are each formed in two parts. The first shaft 18 comprises a first shaft area 20 and a second shaft area 22. The respective first part, such as the first part 24 of the first cleaning roller 14a, is seated on the first shaft area 20. The second part of the first cleaning roller 14a is in the figures 1 and 2 Not shown. The second part 26 of the second cleaning roller 14b is visible there.

A central drive is provided for the rotational drive of the first cleaning roller 14a and the second cleaning roller 14b. A torque-effective coupling of the drive motor to the cleaning rollers 14a and 14b takes place in a central area between the outer ends. In particular, the first cleaning roller 14a and the second cleaning roller 14b extend as far as a side edge 28 of the floor head 12. This makes cleaning close to the edge possible.

In this context, it is an example of the DE 10 2019 109 946 referred.

In one exemplary embodiment, a cleaning roller 14 comprises a textile covering 30 which is arranged on a corresponding cylindrical holder 32 .

In a cleaning operation of the floor cleaning machine 10, the floor head 12 is on a floor to be cleaned 34 ( figure 2 ) supported via the first cleaning roller 14a and the second cleaning roller 14b. The floorhead 12 with its cleaning rollers 14a, 14b has a support plane 36 for the floor 34. The floor 34 to be cleaned is in particular a hard floor.

The floor cleaning machine 10 includes a holding device 38. This is designed in particular as a holding rod device (in the figures 1 and 2 only part of it is shown). The holding device 38 is pivoted to the base head 12 via a pivot joint 40 . A pivot axis 42 of the pivotability of the holding device 38 to the base head 12 is oriented in particular parallel to the first axis of rotation 16a or the second axis of rotation 16b.

There can also be a further pivotability about a pivot axis 44 which is locked transversely to the pivot axis 42 . The pivot axis 42 is in particular parallel to the support plane 36.

The floor cleaning machine 10 is hand-held. The holding device 38 is designed in such a way that an operator can guide the floor cleaning machine 10 over the floor 34 to be cleaned, with the floor head 12 being supported on the floor 34 via the cleaning rollers 14a, 14b, and the operator standing at a distance from the floor head 12 itself on the floor floor 34 stands; the hand-held floor cleaning machine 10 is designed in particular so that it can be operated by a standing operator. It is related to the DE 10 2019 109 946 referred.

A tank device 46 is detachably arranged on the bottom head 12 . The tank device 46 is detachably positioned on a tank device holder 48 of the base head 12 . The tank device 46 is in a removal direction 50 ( figure 1 ) from the bottom head 12 downward away detachable.

The removal direction 50 is in particular oriented perpendicular to the support plane 36 .

The tank device 46 is positioned on the holder 48 between the first cleaning roller 14a and the second cleaning roller 14b. The tank device 46 is used to receive dirty fluid, which is "taken" from the cleaning rollers 14a, 14b and the tank device 46 is supplied.

In the exemplary embodiment shown, a single tank device 46 is provided for the first cleaning roller 14a and the second cleaning roller 14b.

In principle, it is also possible that the first cleaning roller 14a and the second cleaning roller 14b are each assigned their own tank, so that the tank device comprises two separate or connected parts.

The tank device 46 is arranged in particular in such a way that dirty fluid can be coupled in directly from the cleaning rollers 14 without a fan (without suction). This is explained in more detail below.

The tank device 46 (see also the Figures 5 to 7 ) includes a trough 52 with (at least) one receiving space 54 for dirty fluid. The trough 52 has a bottom 56 on which a peripheral wall 58 is arranged. The receiving space 54 is formed between the floor 56 and the wall 58 .

In one exemplary embodiment, the trough 52 has an at least approximately cuboid external shape.

The tank device 46 includes a cover 60. In the case of the cover 60 ( figure 7 ) can be a separate element from the bottom head 12. In particular, the tank device 46 with the cover 62 can then be removed from the tank device holder 48 .

In an alternative embodiment, the cover of the tank device 46 on the base head 12 is formed by the tank device holder 48, for example. In this embodiment, only the trough 52 can be removed from the base head 12 and the corresponding cover remains on the base head 12.

During a cleaning operation of the floor cleaning machine 10, an underside of the floor 56 of the tank device 46 faces the floor 34 to be cleaned. A first side wall 62 of the wall 58 faces the first cleaning roller 14a and a second side wall 64 opposite the first side wall 62 of the wall 58 faces the second cleaning roller 14b.

In one embodiment, first sidewall 62 and second sidewall 64 each include a recess 66 for partially receiving the gear mechanism through which the corresponding shaft (such as first shaft 18) is torqueably coupled to the drive motor. The recess 66 is arranged centrally on the corresponding side wall 62,64.

In one embodiment, fixing elements 68 are arranged on the trough 52 . These are designed in particular in the form of a dome. The fixing elements 68 are used to fix the tank device 46 via the trough 52 on the tank device holder 48 (cf figure 7 ) and in particular for a hanging fixation and thereby for a floating mounting of the trough 52 on the floor head 12 (cf figure 7 ). This is explained in more detail below.

The fixing elements 68 also serve in particular for centering and, if necessary, additional fixing of the cover 60 on the trough 52 if such a separate cover 60 is provided. The cover 60 then has corresponding recesses 74 ( figure 7 ), through which the fixing elements 68 are immersed.

A first sweeping element 70 is arranged on the floor head 12 and is associated with the first cleaning roller 14a. Furthermore, a second sweeping element 72 is arranged on the floor head 12, which is associated with the second cleaning roller 14b. The sweeping elements 70, 72 serve to collect dirt particles (particularly coarse dirt particles) and to feed them to the respective assigned cleaning roller 14a or 14b. These dirt particles can then be taken along by the cleaning roller 14a or 14b and can be coupled into the tank device 46 .

The first sweeping element 70 and the second sweeping element 72 each have a sweeping edge 76. The sweeping edge 76 is adjacent to the textile covering 30 of the corresponding cleaning roller 14 and can rest against it or dip into it. In this context, the WO 2016/058956 A1 referred to, to which reference is expressly made.

The respective sweeping element 70, 72 with its sweeping edge 76 extends in particular at least approximately over the entire length of the associated cleaning roller 14. The sweeping edge 76 is aligned parallel to the corresponding axis of rotation 16a, 16b.

The first sweeping element 70 is arranged on the first side wall 62 spaced from the bottom 56 of the tub 52 . Correspondingly, the second sweeping element 72 is arranged on the second side wall 64 at a distance from the floor 56

It is possible that the respective sweeping element 70, 72 is formed from a rigid material or has a certain inherent elasticity.

The sweeping elements 70, 72 have in particular the respective cleaning roller 14a, 14b facing a contour which is adapted to the cleaning roller 14a, 14b.

The first sweeping element 70 and the second sweeping element 72 are arranged on the pan 52 and thereby on the respective side walls 62 and 64 (front and rear side walls).

In principle, it is also possible for the first sweeping element 70 and/or the second sweeping element 72 to be arranged on the floor 56 with a corresponding design of the trough 52 .

The first sweeping element 70 and the second sweeping element 72 are each connected so firmly to the trough 52 that they can be removed from the floor head 12 with the trough 52 and are moved with the trough 52 to the floor head 12 if the trough 52 is movable.

Provision is made for the respective sweeping edge 76 of the first sweeping element 70 and the second sweeping element 72 to be at a defined, fixed distance D from the floor 34 to be cleaned during operation of the floor cleaning machine 10 (cf Figures 3 and 4 ). This defined distance D is independent of the diameter of the associated cleaning roller 14 and is therefore independent, for example, of wear and tear on the textile trimming 30. It is also independent of manufacturing tolerances.

The distance D is specified for an optimized cleaning result with regard to the coarse dirt collection function of the sweeping element 70, 72. If the distance D is too small, then the respective sweeping element 70 or 72 can get caught in joints, transitions or the like on the floor 34 to be cleaned and the operability is more difficult. If the distance D is too large, then a degraded coarse dirt collection performance will result.

In particular, the distance D is greater than zero and preferably greater than 0.5 mm and preferably greater than 0.7 mm. Furthermore, it is provided in particular that the defined distance D is less than 1.5 mm and in particular less than 1.3 mm.

In a preferred embodiment, the distance D is about 1 mm.

In order to provide this defined distance D in a cleaning operation of the floor cleaning machine 10, supporting elements 78 are provided ( Figures 3 , 4 ), with which the first sweeping element 70 or the second sweeping element 72 is supported on the floor 34 to be cleaned. The support elements 78 are designed as sliding elements which slide over the floor 34 during the cleaning operation of the floor cleaning machine 10 .

The support elements 78 are designed in such a way that the sweeping edge 76 is at a distance D from the floor 34 .

In one embodiment, the support members 78 are formed by spaced ribs 80 disposed on the respective sweeping member 70,72. These ribs 80 extend beyond the sweeping edge 76 in the direction of the support plane 36 in order to achieve the support function on the floor 34.

Between adjacent support elements 78 or ribs 80 there is a free space via which the corresponding sweeping element 70, 72 does not contact the floor 34.

In particular, a series of support elements 78, in particular in the form of ribs, are provided on a respective sweeping element 70, 72. A corresponding row has a longitudinal direction which is parallel to the corresponding axis of rotation 16a, 16b of the associated cleaning roller 14a or 14b.

It is alternatively or additionally possible for support elements 78 to be arranged on the tank device 46 and thereby on the bottom 56 of the trough 52 .

During operation of the floor cleaning machine 10, the tank device 46 is supported via the support elements 78 on the floor 34 to be cleaned. So that the distance D remains independent of the special situation of the cleaning roller 14 , the tank device 46 or a partial area of the tank device (the trough 52 ) is mounted in a floating manner on the bottom head 12 and thereby on the tank device holder 48 . The tank device 46 has mobility in a z-direction 82 with respect to the partial area on which the sweeping elements 70, 72 are arranged. This z-direction 82 lies transversely and in particular perpendicularly to the support plane 36 of the cleaning rollers 14 on the floor 34.

Furthermore, the z-direction 82 is oriented transversely and, in particular, perpendicularly to the axes of rotation 16a, 16b.

Furthermore, provision is preferably made for the z-direction 82 to be oriented transversely and in particular perpendicularly to the pivot axis 42 .

Due to the mobility of the trough 52 with the sweeping elements 70, 72 in the z-direction 82 and the corresponding floating mounting on the floor head 11, the sweeping edge 76 is always at the fixed distance D from the floor 34, regardless of the specific diameter of the cleaning rollers 14. Due to the mobility of the trough 52 in the z-direction 82, this fixed distance D of the sweeping edge 76 to the floor 34 is automatically set during a cleaning operation. The support elements 78 ensure that the sweeping elements 70, 72 are positioned "correctly" in relation to the floor 34.

In one exemplary embodiment, the mobility of the tank device 46 or of the partial area on which the sweeping elements 70, 72 (of the trough 52) are seated is achieved by hanging the trough 52 on the floor head 12. In particular, the mounting is such that, on the one hand, this fixed distance D can be established and, on the other hand, when the floor head 12 is lifted from the floor 34, the trough 52 does not fall off. For example, corresponding counter-fixing elements are assigned to the fixing elements 68 on the tank device holder 48 for this purpose, which enable mobility in the z-direction 82 and prevent it from falling off. A releasing force and/or a special releasing movement is then necessary in particular in order to be able to remove the tank device 46 from the base head 12 in the removal direction 50 .

In particular, the mobility in the z-direction 82 is then also adjusted in such a way that the compensation with regard to the fixed distance D is made possible without the tank device 46 sitting “too loosely” on the base head 12 .

In one embodiment, for example, a web is seated on adjacent fixing elements 68, which is then positioned in a corresponding receptacle of the tank device holder 48 when the tank device 46 is fixed to the base head 12 and is movable in the z-direction 82, the mobility being limited to a corresponding Distance is limited, and a solution of the tank device 46 is blocked by the tank device holder 48 without additional measures.

In principle, it is possible for the tank device 46 to be movable as a whole with the cover 60 relative to the base head 12 in the z-direction 82, or for the trough 52 to be movable relative to a cover 60 or a cover formed by the tank device holder 48, for example is movable in the z-direction 82 .

It can additionally be provided that the tank device 46 or the partial area of the tank device 46 on which the sweeping elements 70, 72 are seated, in at least one transverse direction 84a, 84b (cf figure 5 ) is movable in the z-direction 82 and is mounted in a floating manner on the tank device holder 48 .

The floor cleaning machine 10 includes a tank device 86 for cleaning liquid ( figure 1 ). This tank device 86 for cleaning liquid receives a cleaning liquid which can be supplied directly or indirectly to the floor 34 to be cleaned via a supply device 88 .

The cleaning liquid is in particular fresh water to which a cleaning agent additive and in particular surfactant cleaning agent additive can be added. In principle, it is also possible for the tank device 86 to have separate tanks for fresh water and detergent additive and for a corresponding mixing to take place.

In one embodiment, cleaning liquid is supplied to the corresponding cleaning roller 14 via the supply device 88; The textile covering 30 of the corresponding cleaning roller 14 is then moistened with cleaning liquid.

Dirt on a floor 34 can be loosened by the cleaning liquid. In addition, there is a mechanical effect on the dirt via the corresponding cleaning roller 14 . A rotary wiping movement of the cleaning roller 14 takes place on the floor 34.

In one exemplary embodiment, the tank device 86 is arranged on the holding device 38 . In principle, it is also possible for it to be arranged on the bottom head 12 .

In this case it is an example of the WO 2017/15345 A1 or the DE 10 2019 109 946 referred.

Furthermore, an example on the WO 2016//058901 A1 referred. For example, during a cleaning operation of the floor cleaning machine 10, in which the cleaning rollers 14 are rotated, cleaning agent is automatically supplied from the tank device 86 via the supply device 88 to the cleaning rollers 14 by opening a valve or switching a pump accordingly.

A scraper device 90 is arranged on the bottom head 12 in each case assigned to the cleaning rollers 14 (cf figure 8 ). The scraper device 90 includes a scraper 92 which is immersed in the textile covering 30 of the associated cleaning roller 14a, 14b. Dirty fluid can be detached from the assigned cleaning roller 14 by the corresponding scraper 92 and conveyed into the tank device 46 . It is related to the WO 2019/086083 A1 referred.

For this purpose (at least) one feed channel 94 is provided, which opens into the receiving space 54 .

In one exemplary embodiment, the stripper 92 is arranged on a coupling element 96 . An opening 97 for the feed channel 94 is arranged on the coupling element 96 . The wiper 92 forms an opening wall for the opening 97. In particular, the tank device 46 or the partial area on which the sweeping elements 70, 72 are located can be moved in the z-direction 82 relative to the coupling element 96.

In order to enable this mobility on the tank device 46 and to obtain a tight supply channel 94, a sealing device 98 is provided which seals the supply channel 94 from the coupling element 96 in order to achieve a fluid-tight supply channel 94 to obtain.

The scraper 92 is positioned at a distance from the respective sweeping element 70,72.

In one exemplary embodiment, it is provided that the corresponding cleaning roller 14 rotates in such a direction of rotation 100 that the scraper 92 is arranged downstream of the corresponding sweeping element 70 or 72 . As a result, coarse dirt, which is picked up by the corresponding sweeping element 70, 72, can be removed by the corresponding cleaning roller 14 to the scraper 92 transport. Dirty fluid is detached at the scraper 92 and conveyed into the receiving space 54 via the at least one feed channel 94 .

It is possible, for example, for the coupling element 96 and/or the feed channel 94 to be arranged on a cover 60 of the tank device 46 . It is related to the WO 2019/029821 A1 referred.

It is then particularly advantageous if the trough 52 can be moved in relation to this cover 60 in order to enable mobility in the z-direction 82 in order in turn to be able to set the fixed distance D with respect to the sweeping edges 76 from the bottom 34 .

With regard to the floating tank device 46, the floor cleaning machine 10 functions as follows:
In a cleaning operation of the floor cleaning machine 10, this is placed on the cleaning rollers 14a, 14b on the floor 34 to be cleaned and moved over it.

Cleaning fluid from tank device 86 is applied to cleaning rollers 14a, 14b. The cleaning rollers 14a, 14b rotate in the direction of rotation 100 and in particular they rotate in opposite directions.

The textile covering 30 is moistened. The cleaning rollers 14a, 14b act with a corresponding stocking area on the floor 34 to be cleaned. There is a mechanical action and dirt is moistened in order to improve its detachment.

Coarse dirt is collected by the sweeping elements 70, 72, which can be carried along in the direction of rotation 100 by the corresponding cleaning roller 14a, 14b.

Dirty fluid, including coarse dirt, can be detached from the cleaning roller 14 at the respective scraper 92 and is then conveyed into the tank device 46 and thereby into the corresponding receiving space 54 .

The sweeping elements 70, 72 are arranged on the trough 52 and thereby on the tank device 46 or on a partial area of the tank device 46. The trough 52 with the sweeping elements 70, 72 is mounted floating on the floor head 12 in the z-direction 82. During cleaning operation, the trough 52 is supported by the support elements 78 on the floor 34 to be cleaned. The fixed, defined distance D between the sweeping edge 76 and the floor 34 is automatically set.

This automatic setting takes place with different stocking thicknesses B of the corresponding cleaning roller 14a, 14b (compare the Figures 3 and 4 ). The covering thickness B can change, for example, with a corresponding wear of the cleaning roller 14, or can also be different due to manufacturing tolerances.

For example, the textile trimming 30 is also compressed more strongly in a set-up area on the floor 34 to be cleaned than outside (cf Figures 3 and 4 ). When the tank assembly 46 is full, the width B may be smaller than when it is empty.

The floating mounting of the tank device 46 or the trough 52 enables mobility of the trough 52 in relation to the axis of rotation 16a or 16b of the corresponding cleaning roller 14 in the z-direction 82 Figures 3 and 4 , in which the trough 52 assumes different positions relative to the axis of rotation 16a.

As mentioned, this always results in the fixed distance D between the sweeping edge 76 and the floor 34, regardless of the situation on the cleaning roller 14. This in turn results in an optimized coarse dirt collection function for the respective sweeping element 70, 72. On the one hand, this prevents snagging on the floor 34 and, on the other hand, prevents larger particles from “slipping through” under the respective sweeping element 70, 72.

The corresponding function is ensured independently of manufacturing tolerances and over the service life of the cleaning roller 14 with wear of the textile covering 30 (with a reduction in the diameter of the cleaning rollers 14).

In one exemplary embodiment, it is provided that the tank device 46 or the trough 52 is mounted on the floor head 12 in such a way that it is pressed against the floor 34 by gravity, so that the support elements 78 rest on the floor 34 . The weight of the trough 52 causes the sweeping edge 76 to be automatically positioned at the fixed distance D from the floor 32.

It is alternatively or additionally possible for a spring device 102 to press the trough 52 in a direction 104 towards the support plane 36 (cf

figure 3 ). The spring device 102 is supported in particular on the tank device holder 48 and on the trough 52 in order to correspondingly press the support elements 78 against the floor 34 .

A pin strip 106 with a plurality of pins 108 is arranged on the bottom head 12 . The pins 108 of the pin strip 106 are pins which lie against the textile covering 30 or protrude into the textile covering 30 of the associated cleaning roller 14a, 14b.

The pin strip 106 serves to hold hair in the manner of a hairbrush.

The pins 108 are made in particular from a plastic material.

The pin strip 106 is arranged on the base head 12 in such a way that it can be removed as a whole by an operator. The operator can then clean the pin bar 106 with hair caught therein.

The pin strip 106 includes a carrier 110 on which the pins 108 are arranged. In this case, the pins 108 protrude beyond the carrier 110 .

The pins 108 extend in a pin direction 114. They have a flat face 116. FIG. In particular, a pin 108 on the end face 116 has a diameter in the range between 0.1 mm and 0.5 mm. In one embodiment, this diameter at face 116 is approximately 0.3 mm.

In one embodiment, the pin strip 106 is formed on a coupling element 118 . The coupling element 118 is positioned on the bottom head 12 . The coupling element 118 can be removed from the bottom head 12 as a whole, or the pin strip 106 can be removed from the coupling element 118 .

The coupling element 118 comprises a holder 120. The carrier 110 of the pin strip 106 with the pins 108 is seated firmly or detachably (see above) on the holder 120.

Furthermore, the stripper 92 is seated on the holder 120 of the coupling element 118 at a distance from the pins 108.

Furthermore, in one embodiment, the orifice 97 is at least partially formed on the launch member 118 .

A first row 122a and a second row 122b of pins 108 are arranged on the carrier 110, which in particular is firmly seated on the holder 120.

The first row 122a and the second row 122b extend in a longitudinal direction 124 ( figure 11 ). In particular, the end faces 116 of the pins are located 108 in a row 122a or 122b on a line parallel to the longitudinal direction 124.

When the pin strip 106 is positioned on the floor head 12, the longitudinal direction 124 is parallel to the corresponding first axis of rotation 16a for the first cleaning roller 14a or to the second axis of rotation 16b for the second cleaning roller 14b.

The longitudinal direction 124 is also at least approximately parallel to the support plane 36.

The second row 122b is spaced in a transverse direction 126 from the first row 122a.

In the exemplary embodiment shown, the pins 108 in the first row 122a and in the second row 122b each lie in a line.

In principle, it is possible for pins to also be offset in the transverse direction 126 within a row.

In particular, the rows 122a, 122b have a length which essentially corresponds to a length of the associated cleaning roller 14a, 14b, or is somewhat shorter. This ensures that hair is picked up essentially over the entire length of the corresponding cleaning roller 14 .

Coupling elements 128 and in particular latching elements are located on the holder 120 and in particular on the carrier 110, via which the pin strip 106 can be connected to a corresponding counter-element on the base head 12 and in particular can be latched. The coupling elements 128 and their counter-elements are designed in such a way that an operator can easily detach the pin strip 106 or the coupling element 128 and reinsert it, in particular for cleaning purposes.

When the floor cleaning machine 10 is in operation, the pins 108 of the pin strip 106 lie against the textile trimming 30 or are immersed in it, see in particular figure 10 .

During operation of the floor cleaning machine 10, the scraper 92 is at a depth T ₁ ( figure 10 ) immersed in the textile covering 30 of the corresponding cleaning roller 14. A corresponding immersion depth of pins 108 is at T2.

The immersion depth T ₂ is in the range between (inclusive) 0 mm and (inclusive) 4 mm, an immersion depth of 0 mm meaning that the pins 108 are in contact with the front face 112 of the textile trimming 30 .

In particular, it is provided that the pins 108 protrude into the textile trimming 30 at the same or less depth than the wiper 92 (as an orifice wall for wiping off dirty fluid and coupling it into the tank device 46).

In particular, a difference T ₁ - T ₂ is in the range between (inclusive) 0 mm and (inclusive) 1 mm.

Pins 108 and in particular all pins 108 are aligned in the pin direction 114 on the pin strip 106 . This pin direction 140 is oriented transversely and in particular perpendicularly to the corresponding axis of rotation 16a or 16b of the associated cleaning roller 14 .

The pin direction 140 is also oriented parallel or at an angle to the z-direction 82 . A corresponding angle 130 of the pin direction 114 to the z-direction 82 (and thus also to a normal of the support plane 36) is in the range between 0° and 10°, for example.

Furthermore, the pin direction 140 is parallel or at an acute angle 132 to the stripper 92 (cf figure 10 ). This angle 132 is in particular in the range between 0° and 25°.

An optimized result for picking up the hair has been achieved if the pin direction 114 and the scraper 92 are not aligned parallel to one another, but are aligned at an acute angle and in particular an acute angle of approximately 20°.

The pins 108 on the pin strip 106 are arranged in a manner similar to elements on a hairbrush in order to achieve optimized hair pick-up. In relation to the direction of rotation 100, the pin strip 106 is arranged downstream of the stripper 92. Hair that has not been coupled into the mouth 97 can be picked up by the pin bar 106 .

The pin strip 106 is resiliently mounted on the base head 12. Alternatively or additionally, the wiper 92 is mounted with the orifice 97 under a force and, in particular, under a spring load on the base head 12 .

In the exemplary embodiment shown, the coupling-in element 118 is mounted on the base head 12 under the action of a force and, in particular, under the action of a spring. As a result, the pin strip 106 and the stripper 92 are mounted on the bottom head 12 with a common force and, in particular, with a spring.

The in-coupling element 118 is movable in a movement axis 134 and is mounted in particular in a displaceable manner on the base head 12 .

The coupling element 118 is seated on a displacement guide 136. The axis of movement 134 is oriented transversely and in particular perpendicularly to the respective axis of rotation 16a or 16b.

The movement axis 134 lies in particular at an acute angle to the z-direction 82.

The movement axis 134 also lies at an acute angle to the normal of the support plane 36.

The movement axis 134 is in particular aligned with a central axis of the associated cleaning roller 14 .

In one embodiment, the axis of motion 134 is oriented parallel to the scraper 92 .

A spring device 138 for applying force is assigned to the coupling element 118 (cf figure 8 ). The spring device 138 exerts a spring force which strives to press the coupling element 118 with the pin strip 106 and the wiper 92 against the textile covering 30 of the associated cleaning roller 14 .

In one exemplary embodiment, the coupling element 118 comprises a contact element 140 with a contact surface 142 as a contact surface for the textile trimming 30. The contact surface 142 can bear against the textile trimming 30 without penetrating into it.

In particular, the pins 108 and the scraper 92 extend over the contact surface 142. The contact element 140 forms a stop for the coupling element 118 on the corresponding cleaning roller 14. It is designed in such a way that the pins 108 with the desired immersion depth T ₂ and the scraper 92 immerse into the textile trimming 30 with the desired immersion depth T ₁ .

Regardless of the diameter 30 of the corresponding cleaning roller 14, it is guaranteed that the corresponding (preset) immersion depth T ₁ and immersion depth T ₂ will be reached. By the spring device 138 is the contact element 140 is pressed against the surface of the cleaning roller 14, regardless of the diameter of the cleaning roller 14.

Even if, for example, the diameter of the cleaning roller 14 is reduced due to wear of the textile facing 30, the depths T ₁ and T ₂ specified for an optimized cleaning result are retained.

Corresponding manufacturing tolerances can also be compensated for by the displaceable mounting and spring mounting of the coupling element 118 .

The coupling element 118 achieves a constant distance from the textile trimming 30 regardless of the condition or the configuration of the corresponding cleaning roller 14 . This results in an optimized wiping result for both dirty fluids and hair. The immersion depths T ₁ and T ₂ are independent of tolerances, roll diameter and wear. In this way, optimized dirt pick-up (including hair pick-up) can be ensured. On the one hand, insufficient penetration is prevented (which can have a negative effect on dirt pick-up), and on the other hand excessive penetration (which can mean increased current consumption of the floor cleaning machine 10 as well as increased engine load and gear load) is prevented.

The spring device 138 can be formed by one or more spiral springs. The application of force can also be formed, for example, via one or more rubber buffers. It is also possible, for example, for a pressure cylinder to be provided for the application of force.

Basically, it is also possible that the contact of the contact element 140 on the textile facing 30 of the associated cleaning roller 14 is driven solely by gravity.

In the embodiment described, a coupling element 118 is provided, on which both the pin strip 106 and the stripper 92 are arranged.

In principle, it is possible for separate movable and in particular displaceable elements to be provided for the pin strip 106 and for the stripper 92 .

It is also possible that either only the pin strip 106 is movably and in particular displaceably mounted, or only the stripper 92 is displaceably mounted.

In the Figures 8 to 10 each shows different positions of the coupling element 118 on its displacement guide 136 relative to the first cleaning roller 14a.

The in the figures 8 and 9 The positions shown are transitional positions to explain the principle of operation.

In figure 10 a final position is shown, in which the contact surface 142 rests on the outside of the textile trimming 30, so that the pins 108 and the scraper 92 penetrate the textile trimming 30 with the respective predetermined immersion depth T ₁ or T ₂ .

As mentioned above, it can also be provided, for example, that the pins 108 only touch the textile trimming 30 and do not penetrate into it (with an immersion depth T ₂ of 0 mm).

The one in the figure 9 The position shown is in particular also a position for the coupling element 118 if, for example, the cleaning roller 14 is to be replaced.

It is possible that a floating tank, as described with reference to the floor cleaning machine 10, is also used in a floor cleaning machine 144 (FIG. 16) which is designed to be self-propelled and in particular self-steering. On such a floor cleaning machine, which has a floor head 146, a tank device for cleaning fluid is then also arranged in particular on the floor head.

With regard to the floating mounting of the tank device for dirty fluid, on which one or more sweeping elements are arranged, the mode of operation is the same as described above.

The floor cleaning machine 144 can also be equipped with one or more pin bars 106 for hair collection.

It is also possible for a corresponding pin strip 106 and/or a wiper 92 for a corresponding cleaning roller 14 to be mounted so that it can move and, in particular, be displaceable and, in particular, is subjected to a force.

A further exemplary embodiment of a floor cleaning machine 148 (FIG. 16) comprises a floor head 150. The floor head 150 is supported on a floor to be cleaned via a single cleaning roller 152 in a cleaning operation. On the bottom head 150 sits a detachable tank assembly 154 for dirty fluid.

The bottom head 150 is provided with a pin strip corresponding to the pin strip 106 which is located in particular on the tank device 154 .

Provision is made in particular for the pin strip 106 and/or a corresponding wiper for the cleaning roller 152 to be movably and in particular displaceably and in particular spring-loaded, as described above.

Reference List

10

floor cleaning machine

12

floorhead

14a

first cleaning roller

14b

second cleaning roller

16a

first axis of rotation

16b

second axis of rotation

18

first wave

20

first wave range

22

second waveband

24

first part

26

second part

28

margin

30

textile trimming

32

holder

34

Floor

36

support level

38

holding device

40

swivel joint

42

pivot axis

44

pivot axis

46

tank facility

48

Tank device holder

50

removal direction

52

tub

54

recording room

56

Floor

58

wall

60

Lid

62

Side wall

64

Side wall

66

recess

68

fixation element

70

first sweep element

72

second sweeping element

74

recess

76

sweeping edge

78

support elements

80

ribs

82

z direction

84a, 84b

transverse direction

86

Tank device for cleaning liquid

88

feeder

90

wiper device

92

scraper

94

feed channel

96

launch element

97

mouth

98

sealing device

100

direction of rotation

102

spring device

104

Direction

106

pin bar

108

Pin code

110

carrier

112

face

114

pin direction

116

face

118

launch element

120

holder

122a

first row

122b

second row

124

longitudinal direction

126

transverse direction

128

coupling element

130

Wave

132

Wave

134

motion axis

136

displacement guide

138

spring device

140

investment element

142

contact surface

144

floor cleaning machine

146

floorhead

148

floor cleaning machine

150

floorhead

152

cleaning roller

154

tank facility

D

Distance to the ground 34

T1, T2

immersion depth

Claims (15)

1. Floor cleaning machine, comprising a floor head (12; 146), at least one cleaning roller (14), which is arranged on the floor head (12; 146), a tank device (46), which is arranged on the floor head (12; 146), and at least one sweeping element (70; 72), which is associated with the at least one cleaning roller (14), wherein the at least one sweeping element (70; 72) is arranged on the tank device (46), characterized in that at least a partial region (52) of the tank device (46) on which the at least one sweeping element (70; 72) is arranged is movable relative to the floor head (12; 146) in a cleaning operation.
2. Floor cleaning machine in accordance with Claim 1, characterized in that the at least one sweeping element (70; 72) and the tank device (46) are configured such that the at least one sweeping element (70; 72) is at a defined fixed distance (D) from a floor (34) to be cleaned in a cleaning operation, in particular with at least one of the following:

   - the defined distance (D), in particular of a sweeping edge (76) from the floor (34), is greater than zero and, in particular, greater than 0.5 mm and, in particular, greater than 0.7 mm and, in particular, is about 1 mm;

   - the defined distance (D), in particular with respect to a sweeping edge (76), is smaller than 1.5 mm and, in particular, smaller than 1.3 mm and, in particular, is about 1 mm.
3. Floor cleaning machine in accordance with any one of the preceding Claims, characterized in that the at least one sweeping element (70; 72) is arranged on a base (56) or on a side wall (62; 64) of the tank device (46).
4. Floor cleaning machine in accordance with any one of the preceding Claims, characterized in that arranged on the at least one sweeping element (70; 72) and/or the tank device (46) is at least one support element (78) for a floor (34) to be cleaned, which keeps the at least one sweeping element (70; 72) at a defined fixed distance (D) from the floor (34) to be cleaned, and in particular
   characterized by at least one of the following:

   - the at least one support element (78) is configured as a rib (80) on the at least one sweeping element (70; 72) and/or the tank device (46);

   - a plurality of support elements (78) are provided;

   - located between adjacent support elements (78) is a free region, which does not contact the floor (34) to be cleaned;

   - the support elements (78) are arranged in a row, wherein, in particular, a longitudinal direction of the row is at least approximately parallel to an axis of rotation (16a, 16b) of the at least one cleaning roller (14);

   - the at least one support element (78) is configured as a sliding element or rolling element for the floor (34) to be cleaned.
5. Floor cleaning machine in accordance with any one of the preceding Claims, characterized by at least one of the following:

   - the tank device (46) or the partial region (52) of the tank device (46) on which the at least one sweeping element (70; 72) is arranged is floatingly mounted on a tank device holder (48) of the floor head (12; 146);

   - the tank device (46) or the partial region (52) of the tank device (46) on which the at least one sweeping element (70; 72) is arranged is hangingly mounted on the floor head (12; 146);

   - the tank device (46) or the partial region (52) of the tank device (46) on which the at least one sweeping element (70; 72) is arranged is mounted on the floor head (12; 146) so as to be movable at least in a z-direction (82), with at least one of the following:

   - the z-direction (82) is oriented transversely and, in particular, perpendicularly to an axis of rotation (16a, 16b) of the at least one cleaning roller (14);

   - the z-direction (82) is oriented transversely and, in particular, at least approximately perpendicularly to a contact plane (36) of the at least one cleaning roller (14a, 14b) for a floor (34) to be cleaned;

   - the z-direction (82) is at least approximately parallel to a removal direction (50) of the tank device (46) from the floor head (12; 146);

   - the tank device (46) or the partial region (52) of the tank device (46) on which the at least one sweeping element (70; 72) is arranged is mounted on the floor head (12; 146) so as to be movable in at least one direction (84a; 84b) transverse to the z-direction (82).
6. Floor cleaning machine in accordance with any one of the preceding Claims, characterized in that the at least one sweeping element (70; 72) is arranged and formed such that it feeds dirt particles to the at least one cleaning roller (14), such dirt particles being entrained by the at least one cleaning roller (14) as a result of the rotation of the at least one cleaning roller (14), in particular with at least one of the following:

   - the tank device (46) is configured as a tank device for dirty fluid;

   - at least one feed channel (94) for dirty fluid from the at least one cleaning roller (14) to a receiving space (54) of the tank device (46) is provided;

   - a sealing device (98) is provided, which is arranged on the tank device (46) or the partial region (52) of the tank device (46) on which the at least one sweeping element (70; 72) sits, and which seals the at least one feed channel (94) from an input-coupling element (118) for the at least one feed channel (94), independently of a position of the tank device (46) or the partial region (52) of the tank device (46);

   - the input-coupling element (118) sits on the floor head (12; 146), in particular with at least one of the following:

   - the sealing device (98) is of movable and/or elastic configuration;

   - at least one scraping element (92) for the at least one cleaning roller (14) sits on the input-coupling element (118);

   - an opening (97) for the at least one feed channel (94) is arranged on the input-coupling element (118);

   - the at least one scraping element (92) forms an opening wall;

   - the tank device (46) or the partial region (52) of the tank device (46) on which the at least one sweeping element (70; 72) is arranged is movable relative to the input-coupling element (118) in a cleaning operation.
7. Floor cleaning machine in accordance with any one of the preceding Claims, characterized in that the tank device (46) or the partial region (52) of the tank device (46) on which the at least one sweeping element (70; 72) is arranged is gravity-driven, or is pressed against a floor (34) to be cleaned by a spring device (102) in the direction of a contact plane (36) of the at least one cleaning roller (14a; 14b).
8. Floor cleaning machine in accordance with any one of the preceding Claims, characterized by a scraping device (90) for scraping dirty fluid from the at least one cleaning roller (14) and for coupling into the tank device (46).
9. Floor cleaning machine in accordance with any one of the preceding Claims, characterized by at least one of the following:

   - the at least one cleaning roller (14) has a textile covering (30), and in particular in that a scraper (92) of a scraping device (90) penetrates into the textile covering (30);

   - the at least one cleaning roller (14) is of two-part configuration and a center drive is provided;

   - a tank device (86) for cleaning liquid and a supply device (88) for cleaning liquid to the at least one cleaning roller (14) and/or to a floor (34) to be cleaned are provided.
10. Floor cleaning machine in accordance with any one of the preceding Claims, characterized by a pin strip (106) with pins (108) for picking up hair, wherein, in particular, pins (108) abut against or penetrate into a textile covering (30) of the at least one cleaning roller (14).
11. Floor cleaning machine in accordance with any one of the preceding Claims, characterized in that the at least one sweeping element (70; 72) is arranged upstream from a scraper (92) for the at least one cleaning roller (14) in relation to a normal direction of rotation (100) of the at least one cleaning roller (14) in a cleaning operation.
12. Floor cleaning machine in accordance with any one of the preceding Claims, characterized by a first cleaning roller (14a) and a second cleaning roller (14b), which is arranged on the floor head (12) at a distance from the first cleaning roller (14a), in particular with at least one of the following:

    - a first axis of rotation (16a) of the first cleaning roller (14a) and a second axis of rotation (16b) of the second cleaning roller (14b) are oriented in parallel to one another;

    - in a normal operating mode of the floor cleaning machine, the first cleaning roller (14a) and the second cleaning roller (14b) rotate in opposite directions,

    in particular characterized in that a first sweeping element (70) is associated with the first cleaning roller (14a) and/or a second sweeping element (72) is associated with the second cleaning roller (14b).
13. Floor cleaning machine in accordance with any one of the preceding Claims, characterized by a holding device (38) for a user, which is arranged on the floor head (12), wherein the floor cleaning machine, in particular, is of hand-held or hand-guided configuration, and wherein same, in particular, is operable by a user in a standing position or characterized by a self-propelled and self-steering configuration.
14. Method for operating a floor cleaning machine, in particular in accordance with any one of the preceding Claims, in which a cleaning roller (14) is arranged on a floor head (12) and coarse dirt is fed to the rotating cleaning roller (14) by way of a sweeping element (70), wherein the sweeping element (70) is arranged on a tank device (46) and the tank device (46) or a partial region (52) of the tank device (46) on which the sweeping element (70) is arranged is movable relative to the floor head (12) in a cleaning operation, and in which there is a defined fixed distance D of the sweeping element (70) from the floor (34) in the cleaning operation.
15. Method in accordance with Claim 14, characterized in that the sweeping element (70) is supported on the floor (34) to be cleaned by way of at least one support element (78), wherein the at least one support element (78) is arranged on the sweeping element (70) and/or the tank device (46).

Images