CN110868899B

CN110868899B - Floor cleaning machine with positioning device for sweeping tool

Info

Publication number: CN110868899B
Application number: CN201780092711.8A
Authority: CN
Inventors: 马丁·西金格尔; 乌尔里希·鲍尔
Original assignee: Alfred Kaercher SE and Co KG
Current assignee: Alfred Kaercher SE and Co KG
Priority date: 2017-06-28
Filing date: 2017-06-28
Publication date: 2022-04-08
Anticipated expiration: 2037-06-28
Also published as: WO2019001707A1; EP3644817A1; EP3644817B1; CN110868899A

Abstract

The invention relates to a floor cleaning machine, comprising a chassis (12), a sweeping tool holder (39) which is mounted on the chassis (12) so as to be pivotable about a first pivot axis (124), a sweeping tool (38) which is mounted on the sweeping tool holder (39), and a positioning device (41), wherein the sweeping tool holder (39) can be positioned via the positioning device (41) in a processing position in which the sweeping tool (38) is positioned on a base surface (42) on which the floor cleaning machine stands, and the sweeping tool holder (39) can be positioned in a spacing position in which the sweeping tool (38) is spaced apart from the base surface (42), wherein the positioning device (41) comprises a control lever (130) which is articulated on the chassis (12) so as to be pivotable about a second pivot axis (134), which is coupled to the sweeping tool holder (39), and via which the sweeping tool holder (39) can be placed in the processing position and the spacing position, and wherein in the processing position, the pivot position of the operating lever (130) is predetermined by the height (H) of the cleaning tool (38), wherein the height (H) of the cleaning tool (38) is dependent on wear.

Description

Floor cleaning machine with positioning device for sweeping tool

Technical Field

The invention relates to a floor cleaning machine, comprising a chassis, a cleaning tool holder which is mounted on the chassis so as to be pivotable about a first pivot axis, a cleaning tool which is mounted on the cleaning tool holder, and a positioning device, via which the cleaning tool holder can be positioned for positioning the cleaning tool for processing on a base surface on which the floor cleaning machine stands, and the cleaning tool holder can be positioned in a spaced-apart position of the cleaning tool from the base surface.

Background

From US 7,120,961 a brush wear adaptation system is known, in which the wear of the bristles of a rotating brush is continuously detected and the rotational speed of the rotating brush is automatically increased in order to maintain a desired bristle tip speed.

A disc brush is known from CN 203701004U.

A floor treatment machine having a hood for covering a drive motor is known from US 6,971,137B 2, wherein the hood has an air inlet.

DE 10342454 a1 discloses a floor cleaning machine which is driven by an internal combustion engine. A double-walled cover for covering the motor compartment is provided, wherein an air guiding chamber is formed between the walls of the cover.

A mobile floor cleaning device is known from DE 19644570 a1, in which the cleaning fluid tank is designed as a one-piece, closed hollow body made of plastic, and the dirty fluid container is formed as a double-walled receptacle in the form of a hollow body.

A floor cleaning machine is known from CN 202181530U.

A method for cleaning a filter of a suction system of a mobile floor cleaning machine is known from EP 1290971B 1.

A filter device for filtering impurities from a gas flow is known from EP 2119389 a 2.

In international patent application PCT/EP2017/054453, not previously published, of 27.2.2017, a floor cleaning machine is described, comprising a suction device, a filter device assigned to the suction device, and a cleaning device for the filter device, wherein the cleaning device comprises a swinging lever which is arranged in such a way that it is operable for an operator of the floor cleaning machine in a position in which the floor cleaning machine is normally operating. The cleaning device comprises a bevel gear driver, and the swinging rod is connected with the bevel gear driver. The cleaning device further comprises a movable scraper for the filter device, which scraper is coupled with a bevel gear drive, wherein the oscillating movement of the oscillating lever causes a cleaning movement of the scraper on the filter device.

Disclosure of Invention

The object of the invention is to provide a floor cleaning machine of the type mentioned at the outset which can be operated in a simple manner and has an optimized cleaning effect.

This object is achieved in the floor cleaning machine according to the invention by the positioning device comprising a control lever which is pivotably articulated on the chassis about a second pivot axis, the control lever being coupled to the sweeping tool holder and via which the sweeping tool holder can be brought into a processing position and a spacing position, and in the processing position the pivot position of the control lever being predetermined by the sweeping tool, wherein the height of the sweeping tool is dependent on wear.

In the solution according to the invention, the cleaning tool holder and thus the cleaning tool is positioned via the operating lever and is positioned here in particular in the spacing and treatment positions.

The actuating lever is arranged and designed in such a way that the pivoting position of the actuating lever in the actuating position depends on the height of the cleaning tool and thus on the wear of the cleaning tool. The wear of the cleaning tool can thus be read out in a simple manner from the pivot position of the operating lever.

This is particularly advantageous when the sweeping means is, for example, a (main) sweeping roller which is arranged at least partially below the chassis and is covered at least partially, in particular outwardly, by a skirt, so that it is precisely not possible to read the height of the sweeping means directly.

The pivot position of the operating lever is then an indicator for wear and thus can indicate, for example, that the cleaning roller needs to be replaced.

This can be displayed directly to the driver via a corresponding wear display, for example by means of a scale arranged in the region of the joystick, or else the pivot position of the joystick in the process position can be detected via a sensor and displayed correspondingly.

In principle, it is also possible to carry out an adaptation, for example with respect to the rotational speed of the cleaning tool, using the wear state of the cleaning tool, which can be detected by the pivoting position of the actuating lever.

The positioning device according to the invention can be constructed in a simple and space-saving manner. By means of the positioning device, the respective sweeping tool can be positioned in a simple manner by an operator of the floor cleaning machine.

In particular, the cleaning tool comprises bristles and the height of the cleaning tool is determined by the length of the bristles, wherein the bristles shorten when worn. The wear is then embodied in the form of a reduction in the height of the cleaning implement, wherein a reduction in the height of the cleaning implement in turn means a change in the pivot position of the operating lever in the working position.

Advantageously, a wear indicator is assigned to the control lever, on which wear indicator the wear of the cleaning tool can be read out by means of the pivoting positioning of the control lever. This makes it easy for the operator to access. Even when the cleaning tool is not visible to the operator, for example, because it is covered by a skirt, the wear state of the cleaning tool, which is the wear state of the bristles, can be known (indirectly) via the wear display in a simple manner. Replacement of the cleaning tool can then be carried out, for example, when required.

In a structurally simple embodiment, the wear indicator is arranged on the housing, in particular on the cover. The wear state of the cleaning tool can thus be determined in a simple manner.

It is also advantageous if the wear indicator is arranged on a region supported on or connected to the chassis. Thereby, a chain of tolerances can be kept small, so that the wear display provides an accurate value.

The operating lever is advantageously arranged and designed in such a way that the pivoting of the operating lever from the spacing position into the treatment position takes place in a pivoting direction away from the base surface. The wear display can thus be realized in a simple manner. In particular, the more wear the lever pivots upwards.

Furthermore, it is advantageous if the actuating lever is arranged and designed in such a way that the greater the pivoting angle in the actuating position relative to the spacing position, the smaller the height of the cleaning tool. Thus, the wear display can be realized in a simple manner. A structurally simple construction is obtained.

Advantageously, the operating lever is a pedal lever. A structurally advantageous configuration is thereby obtained. The corresponding positioning device can be designed in a space-saving manner. The operating path is relatively small. In principle, however, it is also possible to realize that the operating lever is, for example, a hand lever.

Advantageously, a guide element is provided, which is connected to the chassis and on which the actuating lever is guided. The guide element can be used in the form of a sliding groove for locking the spacing positioning and also for fixing the mounting process positioning.

Advantageously, the actuating lever has a pivotable mobility about the second pivot axis and a transverse mobility with a movement component in a direction parallel to the first pivot axis on the guide element. By means of the pivotable mobility about the second pivot axis, positioning of the cleaning tool holder with the cleaning tool can in principle be carried out. Due to the transverse mobility, a locking or release for the adjustment of the spacing can be achieved.

Advantageously, the guide element has a slot region through which the actuating lever is guided. Via the slot region, the locking of the working position can be achieved in a simple manner in the form of a sliding groove. Furthermore, the wear display can be realized in a simple manner via the guide element.

Advantageously, the gap region comprises a first region for a fixed spacing positioning and a second region for establishing a treatment positioning, wherein a transition of the operating lever between the first region and the second region can be performed by a lateral movability of the operating lever with a movement component in a direction parallel to the first pivot axis. In this way, the spacing positioning can be reached in a simple manner and the installation spacing positioning or detachment can be fixed. A corresponding pivot position for the operating lever can be reached, in which the processing position of the cleaning tool is reached. This pivoting positioning of the control lever on the second region of the gap region is in turn characteristic of the height of the sweeping tool.

Advantageously, the first region has a stop for the actuating lever, which stop presets a spacing and which limit, in particular, the pivotable mobility of the actuating lever away from the base surface. In this way, the locking of the spacing setting can be achieved in a simple manner. This achieves a specific positioning of the cleaning tool holder with the cleaning tool.

Advantageously, the first region is connected to the second region and/or the length of the first region is smaller than the corresponding length of the second region. By connecting the first region to the second region, the joystick can be guided from the first region into the second region or from the second region into the first region. Due to the different lengths of the first region and the second region, it is possible, for example, for the first region to be used for the detent spacing positioning and for the second region to be used for the predetermined actuating positioning.

Advantageously, the first pivot axis and the second pivot axis are at least approximately parallel to each other. This results in a simple structural design.

Preferably, a connecting piece is articulated on the control lever in a manner pivotable about a third pivot axis at a distance from a pivot bearing, which pivots the control lever about the second pivot axis to the chassis, and is coupled to the cleaning tool holder, wherein the connecting piece brings about a coupling between the control lever and the cleaning tool holder. This allows the force or movement acting on the operating lever to be transmitted to the cleaning tool holder. The cleaning tool holder and thus the cleaning tool can thus be positioned accordingly.

Advantageously, the web is coupled to the cleaning tool holder via a rotary slide bearing. The rotary slide bearing allows a pivotable coupling and a translatory mobility between the web and the cleaning tool holder. The force or movement acting on the operating lever can thus be transmitted in a simple manner to the cleaning tool holder as well. Furthermore, a translatory deflection movement of the web can be achieved, via which an efficient, space-saving design of the floor cleaning machine with respect to the movable sweeping tool holder is possible.

Advantageously, the third pivot axis is oriented parallel to the first pivot axis and/or the second pivot axis. This results in a simple space-saving construction.

Furthermore, according to the invention, the object mentioned at the outset is achieved in that a web is pivotably articulated on the actuating lever about a third pivot axis at a distance from the pivot bearing by which the actuating lever is pivotably articulated about a second pivot axis to the chassis, and is coupled to the cleaning tool holder, wherein the web brings about a coupling between the actuating lever and the cleaning tool holder, and the coupling device by which the cleaning tool holder is coupled to the web is arranged and designed in such a way that the cleaning tool holder and the web can be pivoted relative to one another and the cleaning tool holder and the web can be displaced relative to one another with a movement component transverse to the respective pivot axis.

The force transmission from the actuating lever to the cleaning tool holder can be achieved by the ability of the cleaning tool holder to pivot relative to the web, in particular about a pivot axis parallel to the first pivot axis, in order to position the cleaning tool holders accordingly. The position of the cleaning tool holder on the base surface is in turn transmitted to the control lever via the web, and the corresponding pivot position of the control lever characterizes the height of the cleaning tool, wherein this height is dependent in particular on wear.

Due to the additional translational movement component transverse to the respective pivot axis, the web can be displaced when the spacer is disengaged from the positioning. This allows the processing position to be reached from the interval position.

A space-saving design is possible here, since the respective pivot region, which the cleaning tool holder must be pivotable, can be designed to be relatively small.

In particular, the coupling device comprises a rotary plain bearing or such a rotary plain bearing. By rotating the slide bearing, a pivotable and movable coupling can be realized between the web and the cleaning tool holder.

In particular, the coupling device comprises a recess, in particular in the form of an elongated hole, and an insertion element acting on the recess, wherein in particular the recess is arranged on the web and the insertion element is arranged on the cleaning tool holder. In this way, a displacement movement of the web towards the cleaning tool holder can be achieved in a simple manner at a specific point in time when the positioning device is operated. The combination of the elongated hole and the insertion element forms a structurally simple embodiment of the rotary plain bearing.

It is further particularly advantageous if a spring device is coupled to the web and the cleaning tool holder, the spring force of the spring device tending to reduce the spacing between the coupling point of the spring device and the web and the coupling point of the spring device and the cleaning tool holder. In particular, when the spacer is disengaged, the tab can be moved, based on the force of the spring device, in such a way that the locking can no longer take place and the locking can be reliably disengaged from the spacer. Otherwise, there may be a risk, in particular if the sweeping tool is not worn, of accidentally reaching the spacer again after disengaging the spacer.

Structurally, it is advantageous if the spring device is or comprises an extension spring. In this way, it is possible in a simple manner to make the spring device strive to reduce the spacing between its respective coupling points.

Advantageously, the spring device is preloaded in the spaced-apart position. When the actuating lever is then pulled out of the spacer, the spring device ensures that the spacer is pulled out so that it cannot be accidentally latched again.

In particular, when the operating lever is pulled out of the spacer position, the spring force of the spring device moves the operating lever away from the cleaning tool holder, in order to obtain a reliable unlocking from the spacer position.

For the same reason, it is advantageous if the spring force of the spring device displaces the web relative to the cleaning tool holder and in particular in the direction away from the floor surface when the actuating element is moved out of the spaced-apart position. In this way, the actuating lever can be positioned via the web in such a way that it is not possible to accidentally reposition the latching gap.

Advantageously, the spring device is articulated to the web at a distance from the pivot point of the web on the actuating lever, and the spring device is coupled to the cleaning tool holder at a distance from the pivot bearing of the cleaning tool holder. In this way, the necessary movement pattern can be realized in a simple manner on the positioning device for the cleaning tool.

It is furthermore advantageous if the coupling point of the spring device to the cleaning tool holder is located above the coupling point of the spring device to the web relative to the base surface. In this way, for example, when the latch is disengaged from the spaced-apart position, a movement of the web away from the base surface can be achieved in a simple manner, which prevents the spaced-apart position with the latch from being reached again accidentally.

In an embodiment, the cleaning means is a cleaning roller, in particular a rotating roller, which is parallel to the first pivot axis. Such sweeping rollers are typically positioned at least partially beneath the chassis. The sweeping roller may furthermore be covered by a skirt or the like, so that its wear state cannot be directly recognized. By means of the solution according to the invention, the sweeping roller can be positioned in a spacing position and a treatment position. The wear indication can be realized in a simple manner. The positioning can be performed in a space-saving manner, so that the corresponding floor cleaning machine can be constructed compactly.

In a structurally simple embodiment of the cleaning tool holder, the cleaning tool holder comprises a rocker arm which is mounted on the chassis on a pivot bearing so as to be pivotable about a first pivot axis. The mobility of the cleaning tool can thus be achieved in a simple manner in order to position the cleaning tool in the spacing position and the working position accordingly.

Advantageously, the sweeping tool is arranged at least in some regions below the chassis and is in particular laterally at least partially covered by the cover. By means of the solution according to the invention, a wear display can be realized in a simple manner, on which the wear state of the cleaning tool can be displayed.

For example, the floor cleaning machine according to the invention is configured as a ride-on machine and/or as a sweeping vacuum cleaner.

Drawings

The following description of the preferred embodiments is provided to further explain the present invention by referring to the figures. Wherein:

FIG. 1 shows a side view of an embodiment of a floor cleaning machine according to the invention;

FIG. 2 shows a front view of the floor cleaning machine according to FIG. 1;

FIG. 3 shows an isometric view of the floor cleaning machine according to FIG. 1;

FIG. 4 shows a partial isometric view of the floor cleaning machine according to FIG. 1 with the cover removed (and the front housing removed);

FIG. 5 shows an enlarged view of area A of FIG. 4 with a spaced location for a cleaning tool holder;

FIG. 6 shows the same view as FIG. 5 after disengaging the spaced detent;

FIG. 7 shows the same view as FIG. 5 in a process orientation for the cleaning tool holder when the cleaning tool is heavily worn;

FIG. 8 shows a partial view of the components of the chassis with the upper body and the positioning apparatus in an isometric view;

fig. 9 shows a view according to fig. 8 in the direction B;

fig. 10 shows an enlargement of the region C according to fig. 9;

fig. 11 shows a view according to fig. 8 in the direction D;

fig. 12 shows a view of the corresponding components according to fig. 4 in the direction F; and

fig. 13 shows a cross-sectional view according to fig. 12 along the line 13-13.

Detailed Description

The exemplary embodiment of a floor cleaning machine shown in fig. 1 to 13 and designated by 10 is a sweeping machine, which is designed as a riding floor cleaning machine (riding sweeping machine).

The floor cleaning machine 10 comprises a chassis 12, on which chassis 12 a rear wheel arrangement 14 with a right rear wheel 14a and a left rear wheel 14b (with respect to a forward driving direction 15) is arranged.

Furthermore, steerable front wheels 16 are arranged on the chassis 12.

On the chassis 12, a column element 20 is arranged in the region of the front end 18. A steering column arrangement 22 connected with the front wheels 16 is positioned in this column element 20.

A steering wheel arrangement 24 is arranged on the steering column arrangement 22 outside the column element 20.

The floor cleaning machine 10 is self-propelled. The rear wheel arrangement 14 is assigned a drive 26 (fig. 12) arranged on the chassis 12. In an embodiment, this drive 26 is or includes an electric motor. This electric motor is supplied with electric energy via a rechargeable battery device 28.

The battery devices 28 are arranged on a respective battery holder 32 between the front end 18 and the rear end 30 in the middle region of the floor cleaning machine 10. The battery holder 32 is connected directly or indirectly to the chassis 12.

In principle, it is possible to drive the floor cleaning machine 10 in a driving motion via an internal combustion engine (not shown in the figures). This internal combustion engine directly drives the driving movement or, for example, drives an electric generator which supplies the available current, which is then used by the corresponding electric motor of the floor cleaning machine 10.

In an embodiment mode, at least one further electric motor is provided for driving one or more sweeping rollers or blowers (see below).

In principle, a hybrid drive of the floor cleaning machine 10 is also possible. In a first operating mode, the internal combustion engine is operated, and then the internal combustion engine drives the generator to provide electric current. In the second operating mode, the internal combustion engine is not operated and the electrical energy required for operating the floor cleaning machine 10 is only taken from the battery device 28, which is correspondingly designed for this purpose.

A cleaning roller 38 (fig. 1), which is a main cleaning roller, is arranged as a cleaning means on the chassis 12. The sweeping roller 38 is rotatably supported about a rotational axis 40 parallel to the wheel axis of the rear wheel arrangement 14. When the floor cleaning machine 10 is placed on a flat surface, in which the front wheel arrangements 16 and the rear wheel arrangements 14 are supported on the respective surface, the axis of rotation is parallel to this flat surface.

The sweeping roller 38 is positioned between the rear wheel device 14 and the front wheel 16. The cleaning roller 38 is positioned at least approximately below the battery holder 32.

The sweeping roller is positioned on the sweeping tool holder 39 on the underside of the chassis 12 or in such a way that it projects downwards so as to be able to act on the surface to be cleaned. In particular, a positioning device 41 is provided for the sweeping roller 38, by means of which the sweeping roller 38 can be raised from the surface to be cleaned and can be fixed in a spaced position, for example in order to perform a non-treatment run, and by means of which the sweeping roller 38 can be lowered onto the surface to be treated in a treatment position in order to be able to perform a corresponding sweeping.

When the floor cleaning machine 10 stands with the front wheels 16 and the rear wheel arrangement 14 on the base surface 42, the sweeping roller 38 is spaced apart from the base surface 42 in the spaced-apart positioning of the sweeping tool holder 39. During the processing positioning, the cleaning roller acts on the base surface 42.

A further drive motor (not shown in the figures) is arranged on the chassis 12, which is directly or indirectly connected to the chassis. The drive motor is positioned in front of the battery holder 32, for example, toward the front end 18. The drive motor is an electric motor powered by a battery arrangement 28 (or generator).

The drive motor is in particular positioned in direct or indirect connection with the chassis 12 above the sweeping roller 38.

The drive motor includes a shaft to which a torque transfer device is coupled. The torque transmission device is coupled with the sweeping roller 38. The torque of the drive motor is transmitted to the cleaning roller 38 via a torque transmission device for rotationally driving the cleaning roller about the rotational axis 40. The torque transfer devices include, for example, one or more belt drives.

In the exemplary embodiment, it is provided that the torque transmission has a reduction gear ratio (for example, via corresponding belt pulleys), so that the rotational speed of the cleaning roller 38 about the rotational axis 40 is lower than the rotational speed of the shaft of the drive motor about the rotational axis.

The axis of rotation of the shaft is in particular oriented parallel to the axis of rotation 40 of the sweeping roller 38.

The floor cleaning machine 10 furthermore has one or more side sweeping heads 48. For example, the floor cleaning machine 10 has a right-hand side sweeping head 48a and a left-hand side sweeping head 48b, of which only one side sweeping head 48a is shown in fig. 4, 8, 9, 11 and 12.

The side-scan heads 48 are rotatable about respective axes of rotation 50 (fig. 2). The axis of rotation 50 is oriented transversely to the axis of rotation 40 of the sweeping roller 38. The axis of rotation may be oriented perpendicular to the axis of rotation 40 or, for example, at a slight acute angle from perpendicular.

The rotation of the side sweeper heads 48 about the respective axes of rotation 50 is driven by the drive motor 42 or its own side sweeper head drive motor 51. For this purpose, a corresponding torque transmission device is provided, which may be formed in part by the torque transmission device.

The front wheels 16 are positioned on the chassis 12 between the

side wipers

48a and 48b with respect to a lateral direction (which is perpendicular to the direction of spacing between the front end 18 and the rear end 30).

The side scanning heads 48a, 48b are each assigned a side scanning head positioning device 53, by means of which the respective

side scanning head

48a, 48b can be positioned in an operating position on the base surface 42 or can be positioned at a distance from the base surface.

A coupling-in opening 52 is arranged on the base plate 12, through which opening 52 dirt and in particular dust can be coupled in. The side sweeper head 48 is responsible for conveying sweeping debris toward the (main) sweeper roller 38. Sweeping roller 38 throws the sweeping debris at coupling-in opening 52 into a channel 54 located on chassis 12. The passage 54 leads to a container device 56 for containing the dirt.

In an embodiment, the container arrangement 56 comprises a first container and a second container, which are detachably positioned side by side on the chassis 12 of the floor cleaning machine 10 in the region of the rear end 30. The swarf carried into the receptacle means 56 is distributed between the two receptacles. Thus, a single filled container is lighter than if only a single container were provided.

In principle, however, it is also possible for the container device 56 to comprise only a single container.

In an embodiment, the floor cleaning machine 10 includes a housing 58 (see, e.g., fig. 4) disposed on the chassis 12. This housing 58 has a receiving space 60, which is designed in particular in the form of a push-in opening. The receptacle (or the only receptacle) of the receptacle device 56 can be pushed into this push-in opening, so that the receptacle or receptacles can receive the swarf arriving at the receptacle from the channel 54.

In particular, fastening means are provided in order to be able to fasten the container (or containers) positioned in the receiving space 60 to the chassis 12 or to the housing 58.

In an embodiment, the container or containers have rollers to facilitate sweeping debris removal when the container or containers are removed from the floor cleaning machine 10.

During the cleaning operation, the rotating cleaning roller 38 throws dirt particles into the channel 54 at the coupling opening 52 and thus fills the receptacle device 54 with the cleaning dust. The rotating sweeping roller 38 also generates an air flow which assists in coupling the sweeping dust into the receptacle device 56.

A cover element 62 (skirt 62) is arranged on the coupling-in opening 52, which cover element serves to cover a lateral gap between the coupling-in opening 52 and the base surface 42 on which the floor cleaning machine 10 stands, or to leave only a small gap.

Such a cover element 62 is constructed and/or arranged in particular elastically.

Between the respective cover elements 62, a sweeping edge element 66 is arranged on the coupling-in opening 52.

In particular, a left cover element for the left side of the vehicle and a right cover element for the right side of the vehicle are provided.

The floor cleaning machine 10 furthermore has a suction device. A suction flow is generated by the suction device, which acts in the region of the feed opening 52 in order to support the feed of the swarf into the container device 56 and also to bring about a pressure equalization with respect to the air flow generated by the wiping roller 38.

The suction device comprises a blower. The blower generates a corresponding negative pressure flow for the suction effect. The blower is connected directly or indirectly to the chassis 12.

In an embodiment, the blower is positioned within the region of the drive motor of the blower. The blower is arranged in front of the battery holder 32 in the direction of the front end 18 of the chassis 12.

The drive motor is arranged and designed in such a way that it also drives the rotary motion of one or more impellers of the blower. The axis of rotation for the respective impeller is in particular coaxial with the axis of rotation.

In this embodiment, the drive motor is a drive motor for rotating (rotating) the sweeping roller 38 and rotating one or more impellers of the blower.

A filter device 70 (fig. 4) is positioned in the air path between the suction devices, and thus between the blower and the container device 56. The filter device 70 is disposed in the flow path between the channel 54 or the container device 56 and the blower. The filter device is traversed by the negative pressure of the suction device. The filter device 70 prevents that the coupled-in dirt particles can reach the blower.

The filter device 70 is (in a detachable manner) held on the floor cleaning machine 10 by a filter holder 72.

The filter holder 72 is formed on the housing 58. To this end, the housing 58 includes a filter housing 74 (e.g., fig. 4) having a (cover) wall portion 76. This wall portion 76 has a particularly flat upper side 78. This upper side 78 is remote from the underside of the chassis 12. In particular, the upper side is oriented parallel to the direction of the spacing between the front end 18 and the rear end 30 and parallel to the wheel axis or rotational axis 40 of the rear wheel arrangement 14. An opening 80 is arranged in the wall portion 76. The opening 80 is directed toward the passage 54. A boundary 82 (see, e.g., fig. 3) of the opening 80 is formed by the wall portion 76.

The filter device 70 is in particular designed as a flat pleated filter. The filter device comprises a filter frame, which in particular has a rectangular cross section. The filter frame holds parallel-oriented pleats made of filter material. The filter material is air permeable but impermeable to dust particles up to a lower threshold size.

The floor cleaning machine 10 includes a cover 88 (fig. 1-3, removed in fig. 4-12). The cover 88 is pivotably hinged to the housing 58 via a pivot bearing 90. The pivot axis of this pivot bearing 90 is oriented parallel to the wheel axis of the rear wheel arrangement 14 and parallel to the rotational axis 40. The cover 88 is supported on the chassis 12 via a swing bearing 90.

In the closed position of the cover 88, the cover 88 covers the filter holder 72 with the filter device 70, the battery device 28 and the drive motor to the outside.

In the open position, access to the filter holder 72 with the filter device 70, the battery device 28 and the drive motor is enabled.

With respect to the closed state in which the cover 88 is closed, the cover 88 can be opened by swinging in a swinging direction 94 (fig. 1) which is in a direction toward the rear end 30.

Referring to the view of the floor cleaning machine 10 from the left and relative to the forward travel direction 50, the pivoting direction 94 for opening the hood 88 is clockwise, corresponding to the view according to fig. 1.

When the cover 88 is open, it can be fixed in its respective open pivoted position, in order to enable access to the filter device 70, among other things.

The cover 88 forms a housing (casing) that encloses the housing 58 therein.

A driver seat 102 is disposed on the cover 88. When the cover is pivoted open, the driver's seat 102 is pivoted concomitantly.

A support element 104 (designated in fig. 12 and 4) is arranged on the chassis 12 spaced apart from the column element 20. The support element 104 is arranged at least approximately centrally in front of the battery holder 32 with respect to the outside of the floor cleaning machine 10. The support element 104 is of cylindrical or dome-shaped design and serves to support the cover 88 when the cover 88 is closed; the cover 88 has an abutment area and the support element 104 has a corresponding area.

In an exemplary embodiment, it is provided that when the cover 88 is closed, a connection is made to the support element 104 for a fluid-operated (fluidwirksam) connection between a guide device for process air on the cover 88 and one or more channels for process air on the support element 104. The channel or channels in the support element 104 are in particular directly fluidically connected to a blower of the suction device.

The cover 88 has a front wall 106 (see, for example, fig. 3) which covers the drive motor, the suction device, the battery device 28, etc. toward the column element 20 when the cover 88 is closed.

Between the front end 18 and the front wall 106 of the floor cleaning machine 10 (when the cover 88 is closed) a resting area 108 for the feet of the operator is arranged. On this rest area 108 a pillar element 20 is positioned, or the pillar element 20 projects upwards beyond this rest area 108. When the operator sits in the operator's seat 102, he may rest his feet on the rest areas 108 and operate the steering wheel arrangement 24.

The front wall 106 is then an intermediate region between the driver seat 102 and the rest area 108.

The

foot pedals

110a, 110b are disposed on the resting area 108. For example, the foot board 110a and the foot board 110b are respectively arranged beside the pillar member at the left and right sides at a small interval with respect to the pillar member 20. For example, the foot pedal 110a is a travel speed regulator including a brake for travel speed, and the foot pedal 110b is an operation pedal for a coarse contaminant flap.

Further, a foot board 112 connected to the side-broom positioning unit 53 is disposed on the resting region 108. The operator can position one or more side-scan heads 48 via this foot pedal.

In the illustrated embodiment, the foot board 112 is closer to the right side of the vehicle than to the left side of the vehicle. The foot board 112 is positioned adjacent the front wall 106.

In principle, it is possible here to provide a plurality of

side wipers

48a, 48b, so that all

side wipers

48a, 48b can be positioned together via the side-wiper positioning device 53 and via a single foot pedal 112, or to provide separate positioning sub-devices for the

side wipers

48a and 48b, and thus also separate foot pedals.

Furthermore, a foot pedal 114 is provided, which is coupled to the positioning device 41 for the cleaning tool holder 39 with the cleaning roller 38. The sweeping roller 38 can be positioned in the process or spacing positions via the foot pedal accordingly.

In an embodiment, the foot board 114 is disposed opposite the foot board 112. The footrest 114 is particularly disposed closer to the left side of the vehicle than the footrest 112. The footrest is particularly arranged directly adjacent to the front wall 106.

For example, the

foot pedals

112 and 114 are positioned at least approximately symmetrically to a central plane of the floor cleaning machine 10, wherein the central plane extends, for example, centrally through the post element 20.

In addition to the cylindrical support element 104, the cover 88 is supported on the chassis 12 adjacent to the rest area 108 at

support positions

116, 118. When the floor cleaning machine 10 is resting on the base surface 42, these

support locations

116, 118 are then closer to the base surface 42 than the corresponding respective regions of the support element 104 for the contact regions of the cover 88.

In an embodiment, the support location 116 is immediately behind the resting area 108 behind the foot board 112. The support position 118 is located behind the rest area 108 and here directly behind the foot board 114.

The

foot pedals

112, 114 are arranged such that an operator sitting in the operator's seat 102 can operate them without "changing positions", wherein the

foot pedals

112, 114 are preferably out of range for normal driving operation (operating with the

foot pedals

110a, 110 b) in order to prevent accidental operation or to allow comfortable driving operation.

The cleaning tool holder 39 includes a swing arm 120. The swing arm 120 is swingably supported on the chassis 12 via a swing bearing 122. The pivot bearing 122 defines a first pivot axis (see, e.g., fig. 5-7) about which the swing arm 120, and thus the sweeping tool holder 39 with the sweeping tool (sweeping roller 38), can pivot relative to the chassis 12. The first pivot axis 124 is oriented parallel to the wheel axis of the rear wheel arrangement 14 for the (main) sweeping roller 38. When the floor cleaning machine 10 is standing on a flat base surface 42, the first pivot axis 124 is parallel to this base surface.

Starting from the spaced positioning of sweeping roller 38 to base surface 42 (as can be seen in fig. 5, for example), rocker arm 120 and thus sweeping tool 38 are brought into the processing position in oscillation direction 126 (fig. 5). Swing direction 126 pivots sweeping tool 38 toward base 42.

In the illustrated embodiment, the swing direction 126 is clockwise with respect to the left side of the vehicle.

Starting from the process orientation (fig. 7), rocker arm 120, and thus sweeping tool 38, may be pivoted in swing direction 128 to reach the spaced orientation. The pivoting direction 128 is here the opposite direction to the pivoting direction 126.

The operating lever 130 is hinged on the chassis 12 via a pendulum bearing 132 (see e.g. fig. 8).

The pivot bearing 132 defines the pivotability of the actuating lever 130 about the second pivot axis 134. The second swing axis 134 is parallel to the first swing axis 124.

The wobble bearing 132 is spaced apart from the wobble bearing 122.

When floor cleaning machine 10 is standing on base surface 42 as intended, pivot bearing 132 is located above pivot bearing 122 with respect to the direction of gravity. Furthermore, the pendulum bearing 132 is also closer to the rear end 30 of the floor cleaning machine 10 than the pendulum bearing 122.

The lever 130 is recessed through an opening 136 (see fig. 2) in the front wall 106 of the cover 88.

When the cover 88 is closed, it covers the

swing bearings

132 and 122.

The joystick 130 is configured as a foot pedal lever with a foot pedal 114. The operator can manipulate the foot manipulation portion of the joystick 130 (swing motion and lateral motion, as described in more detail below).

The actuating lever 130 is (mechanically) coupled to the cleaning tool holder 39 and thus to the rocker 120 via a web (strut) 138.

The lever 130 has an end region 140 which is remote from the pivot bearing 122 (see fig. 5 to 7).

The end region 140 is outside the cover 88 and here in front of the front wall 106. The end region 140 is positioned in particular above the rest region 108.

The web 138 is articulated on this end region via a pivot bearing 142 (see, for example, fig. 5 to 7). The pivot bearing 142 defines a third pivot axis 144 about which the web 138 is pivotably articulated to the actuating lever 130.

Above the pivot bearing 142, a stepping element 146 of the foot pedal 114 is arranged on the end part 140. The tab 138 is coupled to the rocker 120 (sweeping tool holder 39) at a distance from the pivot bearing 142 via a coupling device 148.

The coupling device 148 is in particular designed as a rotary plain bearing. In an embodiment, the coupling means 148 comprise a recess 152, in particular in the form of a long hole on the tab 138. This recess 152 is spaced from the pivot bearing 142 and is spaced from a first end 154 and an opposite second end of the tab 138.

An insert element 158, in particular in the form of a pin, is arranged on the rocker arm 120, is recessed in the recess 152 and is movable in the recess 152. The coupling device 148 can in this case provide for a swiveling movement of the rocker arm 120 (of the sweeping tool holder 39) about the first swivel axis 124 and for a translational movement of the web 138 relative to the rocker arm 120 (i.e. a relative movement of the insertion element 158 in the recess 152).

The tab 138 and the rocker 120 are furthermore coupled to one another via a spring device 160. The spring means has a coupling point 162 to the tab 138. The coupling portion 162 is located in the region of the second end 156 of the tab 138.

The spring device 160 furthermore has a coupling point 164 to the rocker arm 120. The coupling portion 164 is spaced from the wobble bearing 122 and located adjacent to the embedded element 158.

The spring device 160 is arranged and designed in such a way that, in the spaced-apart positioning of the cleaning tool holder 39, the spring device 160 is prestressed (fig. 5) and is intended to enable a relative movement of the web 138 with respect to the rocker 120.

This relative movement may be used to reach the process orientation as the rocker arm 120 is pulled out of the spaced orientation. This will be explained in more detail below.

The spring device 160 is or preferably comprises an extension spring 166, which in particular engages over the coupling points 162 and 164.

Under the bias of the tension spring 166, the latter is intended to reduce the distance between the coupling points 162 and 164.

When the floor cleaning machine 10 is standing on the base surface 42 as intended, the coupling 162 of the spring device 160 to the tab 138 is located below the coupling 164 of the spring device 160 on the rocker arm 120 relative to the base surface 42.

The coupling portion may also be located above the coupling portion 164 or at the same height as the coupling position 164.

In the exemplary embodiment, the spring device 160 is arranged and designed in such a way that it is positioned in front of the web 138 in relation to the region of the web 138 with the recess 152 in the direction of the front end 18.

In particular, the tab 138 has a corresponding hook element on the second end 156, in order to be able to achieve this.

In the exemplary embodiment, spring device 160 is also arranged at least approximately at the same height relative to base surface 42 as compared to pivot bearing 122 when floor cleaning machine 10 is standing on base surface 42 as intended.

The recess 152, the spring means 160 and the

coupling portions

162, 164 are arranged in a region 168 (fig. 1 to 3) located below the rest region 108. The laydown area 108 covers this area 168 upwards.

A guide element 170 is arranged on the chassis 12, on which the actuating lever 130 is guided (for example, fig. 4 to 7; in fig. 8 to 11 the guide element 170 is removed).

The guide member 170 is located behind the front wall 106 and is at least partially covered by the cover 88.

Guide element 170 is spaced from wobble bearing 122 and from end 140 of rocker arm 120.

The guide element 170 has a slot region 172, through which slot region 172 the actuating lever 130 is arranged with a region 174 between the end region 140 and the region in which the actuating lever 130 is articulated to the pivot bearing 132.

The slot region 172 forms a through-opening, so that the lever 130 can also be lowered through.

The slit region 172 includes a first region 176 and a second region 178 beside the first region, and the first region 176 and the second region 178 are slit-shaped, respectively.

The first region has an extension L transverse to the first pivot axis 124₁(see fig. 6).

The second region 178 has a length L in the same direction₂Wherein, the length L₂Greater than length L₁. In particular, the first region 176 and the second region 178 have a common end 180 facing downward.

Due to the different lengths of the first region 176 and the second region 178, a step 182 is formed on the gap region 172 when transitioning from the first region 176 to the second region 178. On the step 182, an end 184 (see fig. 5, for example) of the first region 176 opposite the end 180 forms a stop for the actuating lever 130. When the lever 130 rests with its region 174 against the stop (end) 184 (see fig. 5), the further upward pivoting movement of the lever 130 in the pivoting direction away from the base surface 42 (clockwise in fig. 5) is blocked.

When the region 174 of the actuating lever 130 comes to rest against the end 184 of the first region 176 of the gap region 172, the spacing position of the cleaning tool holder 39 with the cleaning tool 38 is reached and is locked at this time.

The operating lever 130 is pivotably articulated on the chassis 12 via a pivot bearing 132. The joystick also has lateral movability (indicated in fig. 5 by an arrow with reference numeral 186). The lever 130 is movable in a direction parallel to the first swing axis 124.

This lateral movability of the lever 130 enables the disengagement positioning. The joystick 130 can thereby be transferred from the first region 176 into the second region 178. The joystick may then be pivoted further upward (from the base 42) in the second region 178. This enables the arrival process positioning (fig. 7).

Fig. 6 shows an intermediate position in which the control lever 130 is moved in the second region 178 until the final position according to fig. 7 is reached.

The corresponding manner of operation will be explained in more detail below.

The cleaning roller 38 has a height H (fig. 1). In the case of a sweeping roller, this height H corresponds to the diameter of the sweeping roller 38.

The sweeping roller 38 includes a bristle holder 188 (see fig. 1) on which bristles 190 are disposed. During the cleaning process in the treatment position of the sweeping roller 38, the bristles act with their tips or the regions on the tips on the base surface 42. The height H (and thus the diameter) of the sweeping roller 38 is predetermined by the respective bristle length of the bristles 190.

The bristles 190 wear during the sweeping operation; this is reflected in the fact that the length of the bristles 190 is reduced. Therefore, the height H (and hence the diameter) of the sweep roller 38 is reduced during the cleaning operation.

The positioning of the joystick 130 in the second region 178 for process positioning of the cleaning roller 38 is determined by the height H of the cleaning roller 38. When the sweeping roller 38 has a smaller height H, the region 174 of the actuating lever 130 is located on the guide element 170 and on a second region 178 further away from the base surface 42, since the rocker 120 can be pivoted in the pivoting direction 126 at a greater angle to the base surface 42.

The pivoting position of the actuating lever 130 on the guide element 170 and thus the position of the region 174 in the second region 178 (in the process position) is therefore preset by the height H of the sweeping roller 38.

This in turn enables the height H of the sweeping roller 38 to be known from the oscillating positioning of the lever 130 in the second region 178 and information about the wear of the bristles to be obtained.

A wear indicator 192 is associated with the joystick 130.

In principle, it is possible to detect the pivot position of the joystick 130 in the second region 178 for processing the position and to display this to the operator.

In a structurally simple embodiment, the wear indicator 192 is arranged as a scale on the cover 88 (housing 88) and more precisely on the housing region covering the guide element 170.

Alternatively, it can be provided that, when the guide element 170 is visible from the outside (the cover 88 has, for example, a corresponding recess), the wear indicator 192 'is arranged as a scale directly on the guide element 170, so that the wear indicator 192' is visible from the outside.

The sweeping roller 38 is located at least in a larger partial region under the chassis 12 and is furthermore laterally covered by a cover element 62. Thus, the operator of the floor cleaning machine 10 cannot directly recognize the height H or the bristle wear from the outside. By observing the wear indicator 192 or 192', it is possible to enable the operator to identify the degree of wear of the bristles in a simple manner when a treatment location is provided on the positioning device 41.

The wear indicator 192 is arranged on a region 194 of the cover 88, which region is supported in particular directly on the chassis 12. Thereby, a relatively accurate wear indication can be achieved and tolerances minimized.

If the wear indicator 192' is arranged directly on the guide element 170, which in turn is connected in particular directly to the chassis 12, then low tolerances are also achieved in the corresponding tolerance chain.

The wear display 192 or 192' may be a quantitative display and/or a qualitative display. The quantitative display shows in particular the bristle length or a measure of the bristle length. The qualitative display shows whether the sweep roller 38 is still available for a sweep operation.

The floor cleaning machine 10 according to the invention operates as follows:

for example, for non-cleaning travel, the sweeping roller 38 and, hence, the sweeping roller holder 39 are in spaced positioning from the base surface 42 (fig. 4, 5, 8 to 13). The actuating lever 130 is positioned in a first region 176 of the guide element 170 (with its region 174) and bears against a stop 184.

In this spaced apart orientation, the lever 130 cannot pivot further upwardly away from the base 42.

The insert element 158 on the rocker arm 120 rests against the upper end 196 of the recess 152. As a result, the pivotable mobility of the rocker arm 120 and the cleaning tool 38 in the pivot direction 126 is blocked and the spacing is fixed.

The spring device 160 is here prestressed; the spring force of spring device 160 seeks to reduce the spacing between coupling portion 162 and coupling portion 164 in the spaced apart positioning.

From this spaced position, the operator can place the cleaning roller 39 into the treatment position. To this end, the operator acts on and in the process moves the actuating lever 130 in the direction 186, so that the region 174 is guided from the first region 176 into the second region 178 (fig. 6).

A corresponding arrow 198 for the transverse movability 186 is arranged on tread element 146 in order to also signal to the operator this "disengageability" of the spaced-apart locking.

If necessary, the actuating lever 130 is also pressed downward against the base surface 42 in order to perform a transverse movement in the direction 186 in this case, in order to be able to disengage the stop 184.

Thus, the operator moves the joystick 130 with its region 174 from the first region 176 into the second region 178. The spring means compresses and this causes the tab 138 to move upwardly away from the base 42 (figure 6). This movability can be achieved precisely via the recess 152 and in particular its design as a slot. Thereby, the recess 152 is moved to some extent relative to the embedded element 158.

This causes the lever 130 to move upward in the second region 178 and past the end 184 (fig. 6) there.

Thus, joystick 130 may pivot rocker arm 120 downward (in swing direction 126) until sweeping roller 38 contacts base surface 42.

As described above, the angle of rotation depends here on how high the height H of the sweeping roller 38 is and therefore on the bristle length.

The actuating lever 130 is pivoted upward in the second region 178 until, in particular, the sweeping roller 38 rests on the base 42 and the final positioning of the rocker 120 is reached. The corresponding final positioning, which corresponds to the process positioning of the sweeping roller 38, is then shown in fig. 7, wherein in the exemplary embodiment shown here the lever 130 is pivoted almost as far as the end of the second region 178 (remote from the end 180). This means that the height H or bristles are very worn.

The process positioning shown in FIG. 7 corresponds to a larger deflection of the joystick 130; this corresponds to a large wear of the sweeping roller 38.

Further wear means abutment at the end of the second region 178 remote from the end 180 and thus means a lack of efficiency of the sweeping roller 38. Wear indicator 192 shows in the position shown in fig. 7 that sweep roller 38 must be replaced "as quickly as possible".

When the sweeping roller 38 is less worn, the lever 130 is located below the position shown in fig. 7 in the second region 178 in the process setting.

The sweeping operation of the floor cleaning machine 10 can now be carried out.

When the height H of the sweeping roller 38 is relatively high (no wear), the spring means 160 ensure that unlocking from the spaced positioning according to fig. 5 is also possible. When the actuating lever 130 is moved in the transverse direction 186 from the spaced-apart position, the spring device 160 ensures, in cooperation with the recess 152, that the region 174 of the actuating lever 130 moves over the step 182, i.e. a safe unlocking is achieved and also an accidental locking during the processing operation is prevented.

When starting from the work orientation (fig. 7), the operator wishes to place the sweeping roller 38 in the spaced orientation, the operator presses on the stepping element 146 of the lever 130 in the direction 200. The lever 130 is then pivoted about the second pivot axis 134 in the pivot direction 128 (fig. 7) downward toward the base surface 42. This causes the tab 138 to move downward and thus the rocker arm 120 to pivot away from the base surface 42 by a pivoting movement in the direction 128.

When the actuating lever 130 with its region 174 passes over the step 182, the region 174 of the actuating lever 130 can be inserted into the first region 176 by a transverse movement in the direction 202 (fig. 7). After the lever 130 is released by the operator, the region 174 can abut against the end 184 in order to thus lock the spacing of the sweeping roller 38.

The guide element 170 is in the form of a slot region 172 which forms a sliding slot for a region 174 of the actuating lever 130.

The processing position of the cleaning roller 38 can be reached or the spacing position can be reached and locked by a relatively simple mechanical structure.

Here, the wear indicator 192 may be configured in a simple manner, by which an operator can recognize the wear of the bristles 190 of the cleaning roller 38 without having to personally inspect the cleaning roller 38.

In the process position of sweeping roller 38, the position of region 174 of lever 130 on guide element 170 characterizes the height H of sweeping roller 38 and thus the wear of the bristles.

The spring means 160, in particular in cooperation with the recess 152, ensures that even for a sweeping roller 38 without bristle wear, a transition from the spacing position to the treatment position is achieved and is not accidentally locked in the treatment position.

The described design of the positioning device 41 results in a simple and compact construction of the floor cleaning machine 10. In particular, the cleaning tool holder 39 is realized in a relatively small amount of space for the movement of the rocker 120 for achieving the spacing and processing positioning, so that a compact design can be realized in a simple manner.

For example, it is basically also possible to dispense with the recess 152 having the design as an elongated hole, wherein a greater movement space for the ability of the rocker arm 120 to pivot is required, and in particular the rocker arm 120 must also be able to pivot upward from the spaced-apart position.

In the embodiment shown, the spaced location of the cleaning tool holder 39 is the maximum swing location 42 that is upwardly away from the base surface 42, and is therefore an extreme position.

In the embodiment described here, no translational mobility is permitted between the web 138 and the rocker arm 120, but the insertion of the insertion element 158 into the respective recess 152 forms a pure pivot bearing.

The floor cleaning machine according to the invention is in particular designed as a sweeping machine, and is preferably designed here as a riding sweeping machine. The floor cleaning machine is in particular designed as a sweeping vacuum cleaner.

In principle, it is also possible to place the side sweeping head 48 into the processing position and into the spaced-apart position from the base surface 42 via the same positioning means as the positioning means described with reference to the positioning device 41.

(generally, since bristle wear can be directly recognized, a wear display for a side sweeping head is not required (see FIG. 3))

List of reference numerals

10 floor cleaning machine

12 chassis

14 rear wheel device

14a right rear wheel

14b left rear wheel

15 forward direction of travel

16 front wheel

18 front end portion

20 column element

22 steering column device

24 steering wheel device

26 driver

28 Battery device

30 rear end portion

32 cell holder

38 sweep roller

39 cleaning tool holder

40 axis of rotation

41 positioning device

42 base plane

48 side broom

48a right side sweeping head

48b left side sweeping head

50 axis of rotation

51 side broom drive motor

52 incoupling port

53 side broom positioner

54 channel

56 container device

58 casing

60 accommodating cavity

62 cover element

66 sweeping edge element

68 blower

70 filter device

70' filter device

72 Filter retaining device

74 Filter housing

76 wall portion

78 upper side

80 opening

82 boundary

88 cover

90 oscillating bearing

94 direction of oscillation

102 driver's seat

104 support element

106 front wall

108 resting area

110a foot pedal

110b foot pedal

112 foot pedal

114 foot pedal

116 support position

118 support position

120 rocker arm

122 oscillating bearing

124 first axis of oscillation

126 direction of oscillation

128 direction of oscillation

130 operating rod

132 rocking bearing

134 second axis of oscillation

136 opening

138 contact piece

140 end region

142 oscillating bearing

144 third axis of oscillation

146 tread element

148 coupling device

152 recess

154 first end portion

156 second end portion

158 Embedded component

160 spring device

162 coupling portion

164 coupling part

166 extension spring

168 area

170 guide element

172 gap region

174 area

176 first area

178 second region

180 end part

182 step

184 end (stop)

186 transverse movability

188 bristle holder

190 bristles

192 wear display

192' wear display

194 area

196 upper end portion

198 arrow head

200 direction

202 transverse movement

Claims

1. Floor cleaning machine comprising a chassis (12), a sweeping tool holder (39) which is supported on the chassis (12) in a manner pivotable about a first pivot axis (124), a sweeping tool (38) which is seated on the sweeping tool holder (39), and a positioning device (41), via which positioning device (41) the sweeping tool holder (39) can be positioned for a process positioning of the sweeping tool (38) on a base surface (42) on which the floor cleaning machine stands, and in which positioning device (41) the sweeping tool holder (39) can be positioned in a spaced-apart positioning in which the sweeping tool (38) is spaced apart from the base surface (42), characterized in that the positioning device (41) comprises a lever (130) which is hinged to the chassis (12) in a manner pivotable about a second pivot axis (134), the control lever is coupled to the cleaning tool holder (39) and via the control lever the cleaning tool holder (39) can be brought into the processing position and the spacing position, and in the processing position the pivot position of the control lever (130) is predetermined by the height (H) of the cleaning tool (38), wherein the height (H) of the cleaning tool (38) is dependent on the wear, wherein the control lever (130) is assigned a wear display (192; 192') on which the cleaning tool wear can be read out via the pivot position of the control lever (130).

2. A floor cleaning machine as claimed in claim 1, characterized in that the sweeping tool (38) comprises bristles (190) and the height (H) of the sweeping tool (38) is determined by the bristle length, wherein the bristles (190) shorten when worn.

3. A floor cleaning machine as claimed in claim 1 or 2, characterized in that the wear display (192) is arranged on the housing.

4. A floor cleaning machine as claimed in claim 3, characterized in that the wear display (192) is arranged on a cover (88).

5. A floor cleaning machine as claimed in claim 1 or 2, characterized in that the wear display (192; 192') is arranged on an area supported on the chassis (12) or firmly connected with the chassis (12).

6. A floor cleaning machine according to claim 1 or 2, characterized in that the joystick (130) is arranged and constructed to: such that the swinging of the joystick (130) from the spaced orientation into the processing orientation is in a swinging direction away from the base surface (42).

7. A floor cleaning machine according to claim 1 or 2, characterized in that the joystick (130) is arranged and constructed to: such that the greater the swing angle in the manoeuvring orientation relative to the spaced orientation, the smaller the height (H) of the cleaning implement (38).

8. A floor cleaning machine according to claim 1 or 2, characterized in that the operating lever (130) is a foot pedal lever.

9. A floor cleaning machine as claimed in claim 1 or 2, characterized by a guide element (170) which is connected to the chassis (12) and on which the operating lever (130) is guided.

10. A floor cleaning machine according to claim 9, characterized in that the operating lever (130) is provided with a swingable movability about the second swing axis (134) on the guide element (170) and with a lateral movability with a movement component in a direction parallel to the first swing axis (124).

11. A floor cleaning machine as claimed in claim 9, characterized in that the guide element (170) has a slot region (172) through which the operating lever (130) is guided.

12. A floor cleaning machine according to claim 11, characterized in that the gap region (172) comprises a first region (176) for fixing the spacing positioning and a second region (178) for establishing the treatment positioning, wherein the transition between the first region (176) and the second region (178) can be performed by the lever (130) with a lateral movement with a movement component in a direction (186) parallel to the first swing axis (124).

13. A floor cleaning machine as claimed in claim 12, characterized in that the first region (176) has a stop (184) for the operating lever (130), which stops predetermine the spacing positioning.

14. A floor cleaning machine according to claim 13, characterized in that the stop (184) limits the pivotable mobility of the operating lever (130) away from the base surface (42).

15. A floor cleaning machine according to claim 12, characterized in that the first area (176) is connected with the second area (178) and/or that the first area (176) has a respective length (L) which is smaller than the second area (178)₂) Length (L) of₁)。

16. A floor cleaning machine as claimed in claim 1 or 2, characterized in that the first oscillation axis (124) and the second oscillation axis (134) are at least approximately parallel to one another.

17. A floor cleaning machine as claimed in claim 1, characterized in that, spaced apart from a pivot bearing (132) via which the operating lever (130) is articulated to the chassis (12) about the second pivot axis (134), a tab (138) is articulated on the operating lever (130) so as to be pivotable about a third pivot axis (144), and the tab (138) is coupled to the sweeping tool holder (39), wherein the tab (138) causes a coupling between the operating lever (130) and the sweeping tool holder (39).

18. A floor cleaning machine as claimed in claim 17, characterized in that the tab (138) is coupled to the sweeping tool holder (39) via a rotary slide bearing.

19. A floor cleaning machine according to claim 17, characterized in that the third oscillation axis (144) is oriented parallel to the first oscillation axis (124) and/or the second oscillation axis (134).

20. A floor cleaning machine as claimed in claim 1, characterized in that, spaced apart from a pivot bearing (132) via which the operating lever (130) is articulated about the second pivot axis (134) to the chassis (12), a tab (138) is articulated on the operating lever (130) in a pivotable manner about a third pivot axis (144), which tab (138) is coupled to the sweeping tool holder (39), wherein the tab (138) brings about a coupling between the operating lever (130) and the sweeping tool holder (39), a coupling device (148) coupling the sweeping tool holder (39) to the tab (138) being arranged and constructed: the cleaning tool holder (39) and the connecting piece (138) are pivotable relative to one another, and the cleaning tool holder (39) and the connecting piece (138) are displaceable relative to one another with a movement component transverse to the respective pivot axis.

21. A floor cleaning machine according to claim 20, characterized in that the coupling device (148) comprises a rotary slide bearing.

22. A floor cleaning machine according to claim 20, characterized in that the coupling device (148) has a recess (152) and an embedded element (158) acting on the recess (152).

23. A floor cleaning machine as claimed in claim 22, characterized in that the recess (152) is arranged on the tab (138) and the insert element (158) is arranged on the sweeping tool holder (39).

24. A floor cleaning machine as claimed in claim 22, characterized in that the recess (152) is in the form of an elongated hole.

25. A floor cleaning machine as claimed in any one of claims 17 to 24, characterized in that a spring device (160) is coupled to the tab (138) and to the sweeping tool holder (39), the spring force of the spring device contributing to a reduction of the spacing between a coupling point (162) of the spring device (160) to the tab (138) and a coupling point (164) of the spring device (160) to the sweeping tool holder (39).

26. A floor cleaning machine according to claim 25, characterized in that the spring device (160) comprises a tension spring (166).

27. A floor cleaning machine according to claim 25, characterized in that the spring device (160) is pre-tensioned in the spaced-apart positioning.

28. A floor cleaning machine as claimed in claim 25, characterized in that the spring force of the spring device (160) moves the lever (130) away from the sweeping tool holder (39) when the lever (130) is led out from the spaced-apart positioning.

29. A floor cleaning machine as claimed in claim 25, characterized in that the spring force of the spring device (160) moves the tab (138) relative to the sweeping tool holder (39) when the lever (130) is moved out of the spaced-apart positioning.

30. A floor cleaning machine as claimed in claim 25, characterized in that the spring force of the spring device (160) moves the tab (138) relative to the sweeping tool holder (39) in a direction away from the base surface (42) when the lever (130) is moved out of the spaced-apart position.

31. A floor cleaning machine as claimed in claim 25, characterized in that the spring device (160) is coupled to the tab (138) at a distance from the hinge point at which the tab (138) is hinged to the lever (130), and in that the spring device (160) is coupled to the sweeping tool holder (39) at a distance from the pivot bearing (122) of the sweeping tool holder (39).

32. A floor cleaning machine as claimed in claim 25, characterized in that, relative to the base surface (42), the coupling point (164) at which the spring device (160) is coupled to the sweeping tool holder (39) is located above the coupling point (162) at which the spring device (160) is coupled to the tab (138).

33. A floor cleaning machine as claimed in claim 1 or 2, characterized in that the sweeping means (38) is a sweeping roller.

34. A floor cleaning machine according to claim 33, characterized in that the sweeping tool (38) has a rotation axis (40) parallel to the first oscillation axis (124).

35. A floor cleaning machine as claimed in claim 1 or 2, characterized in that the sweeping tool holder (39) comprises a rocker arm (120) which is mounted on the chassis (12) in a manner pivotable about the first pivot axis (124) on a pivot bearing (122) of the sweeping tool holder (39).

36. A floor cleaning machine as claimed in claim 1 or 2, characterized in that the sweeping means (38) is arranged at least in some regions below the chassis (12).

37. A floor cleaning machine as claimed in claim 36, characterized in that the sweeping means (38) is laterally at least partially covered by a cover (62).

38. Floor cleaning machine according to claim 1 or 2, characterized in that it has a design as a riding machine and/or as a sweeping vacuum cleaner.