Floor cleaning machine and method for operating a floor cleaning machine

Abstract

A floor cleaning machine is provided, comprising a base (12), a rocker arm (40) arranged on a first swivel bearing (42) on the base (12) in a swivelable manner about a first swivel axis (44), a cleaning roller (64) arranged on a rotary bearing (66) on the rocker arm (40) in a rotatable manner about a rotary axis (68), a motor device (72) for rotary driving of the cleaning roller (64), and a traction mechanism transmission (84) with a traction means (86) for transmitting torque from the motor device to the cleaning roller, wherein the traction means (86) has a load section (88), wherein on the base (12) a lever (96) is arranged on a second swivel bearing (98) in a swivelable manner about a second swivel axis (100), wherein the lever (96) is hinged to the rocker arm (40), and wherein on the lever (96) a deflection element (106) for the traction means (86) is arranged, wherein the traction means (86) is guided on the deflection element (106) in the load section (88).

Description

TECHNICAL FIELD

[0001] The invention relates to a floor cleaning machine comprising a base, a rocker arm arranged in a manner capable of oscillating about a first oscillation axis on a first oscillation bearing on the base, a cleaning roller arranged in a manner capable of rotating about a rotation axis on a rotation bearing on the rocker arm, a motor device for rotary driving of the cleaning roller, and a traction mechanism transmission having traction means for transmitting torque from the motor device to the cleaning roller, wherein the traction means have a load section.

[0002] The invention also relates to a method for operating a floor cleaning machine. BACKGROUND

[0003] DE 10 2014 006 392 B4 discloses a cleaning machine having a brush which is supported in a height-adjustable manner and can be rotated driven by a motor, an automatic lowering and lifting device for the brush, which is implemented by driving the brush via a traction section of a transmission element, which is guided in such a way that in operation the transmission element introduces a downwardly directed force onto the brush by generating a torque, and by a pre-tensioned support of the brush, by which the brush is subjected to an upwardly directed force when the motor is at rest, wherein the brush is supported on an adjustment lever which is supported in a manner capable of rotating about an oscillation axis, and the oscillation axis divides the adjustment lever into a first lever arm and a second lever arm, the brush is supported on the first lever arm, a deflection element is supported on the second lever arm, and wherein the traction section of the transmission element, which starts from the motor, acts onto the deflection element.

[0004] The not previously published DE 10 2020 109 656.9 discloses a floor cleaning machine, in particular for cleaning floors made of textile material, comprising a base, at least one cleaning roller unit arranged in a rotatable manner on the base, and a suction unit device, wherein the at least one cleaning roller unit is assigned a filter unit, which can be positioned as a whole on the floor cleaning machine and can be removed as a whole from the floor cleaning machine, and has a housing, at least one first filter and a second filter, wherein the first filter and the second filter are arranged on the housing, the first filter is a pre-filter for the second filter, and the first filter is configured as a fluff filter.

[0005] The not previously published DE 10 2020 109 694.1 discloses a floor cleaning machine comprising a base, at least one cleaning roller unit arranged in a rotatable manner on the base, and a motor device for rotary driving of the at least one cleaning roller unit. The at least one cleaning roller unit is provided with a height adjustment device. Furthermore, an acquisition device for acquiring a contact pressure of the at least one cleaning roller unit on the floor to be cleaned is also provided. SUMMARY

[0006] It is the task of the present application to provide a floor cleaning machine of the type mentioned at the outset, which enables easy handling with effective cleaning.

[0007] In the floor cleaning machine mentioned at the outset, the task is solved according to the application in that a lever is arranged on the base in a manner pivotable about a second pivot axis on the second pivot bearing, which lever is hinged to the rocker arm, and in that a deflection element for the traction means is arranged on the lever, wherein the traction means is guided on the deflection element in the load section.

[0008] With the floor cleaning machine according to the application, textile floorings and in particular carpeted floorings can be cleaned, wherein in principle also smooth or hard floorings can be cleaned. Hard or smooth floorings are for example tile floorings, parquet floorings, industrial mortar floorings, asphalt floorings, stone block pavements, PVC floorings, etc. Different carpeted floorings can differ in the pile height. Different floorings can require a different contact pressure of the cleaning roller with the floor to be cleaned in principle for an effective cleaning.

[0009] In the solution according to the application, an automatic adjustment of the cleaning process and in particular of the contact pressure of the cleaning roller with the floor to be cleaned is achieved via the lever arranged pivotably. Via the load section (traction section or load section or traction section), the motor device exerts a corresponding traction force in order to drive the cleaning roller in rotation. By the cleaning roller acting onto the floor to be cleaned, a counter torque is generated, which influences the force in the load section or the resulting tensile stress in the load section. The resulting tensile stress is related to the properties of the floor to be cleaned for a given cleaning roller.

[0010] Via the deflection element, a corresponding influence on the lever exists. The lever is hinged in a manner pivotable about the second pivot axis and can then change its positioning depending on the acting force or adapt its positioning to the acting force. This means however that the positioning of the lever is predetermined by the properties of the floor to be cleaned when the cleaning roller acts onto the floor to be cleaned. By the lever being hinged to the rocker arm, the lever in turn predetermines the pivot positioning of the rocker arm on the base and thus the positioning of the cleaning roller relative to the floor to be cleaned (and thus the contact pressure).

[0011] This results in an adjustment process of the cleaning result which is optimized in the respective design situation. The adjustment process can be applied to all common cleaning principles.

[0012] If the operator changes the floor during cleaning, for example from a first carpeted floor to a different second carpeted floor, or from a carpeted floor to a smooth floor, or from a smooth floor to a carpeted floor, the contact pressure will automatically occur depending on the floor properties and an optimized cleaning result will be achieved. The automatic adjustment and matching of the respective floor properties takes place without the operator having to intervene.

[0013] In particular, the lever is articulated to the rocker arm via a third swivel bearing in such a way that it can swivel about a third swivel axis. In this way, the rocker arm can be influenced in a simple manner via the lever in order to predefine the swivel positioning of the rocker arm on the first swivel bearing.

[0014] A design-structurally simple configuration can be achieved when at least one of the following features is provided:

[0015] - the swivel axis and the first swivel axis are oriented parallel to one another;

[0016] - the swivel axis and the second swivel axis are oriented parallel to one another;

[0017] - the first swivel axis and the second swivel axis are oriented parallel to one another;

[0018] - the swivel axis and / or the first swivel axis and / or the second swivel axis are oriented transversely and in particular perpendicularly to the direction of travel of the floor cleaning machine;

[0019] - the swivel axis and / or the first swivel axis and / or the second swivel axis are oriented parallel to the wheel axis of the floor cleaning machine;

[0020] - the swivel axis and / or the first swivel axis and / or the second swivel axis are oriented transversely and in particular perpendicularly to the height direction of the base, wherein the positioning of the cleaning roller in the height direction can be set via the swivel positioning of the rocker arm on the first swivel bearing.

[0021] By virtue of one or more of the aforementioned predefinitions, a mechanical adjustment of the contact pressure of the cleaning roller to the floor to be cleaned can be achieved in a simple manner, wherein in particular the respective floor properties are automatically matched.

[0022] For the same reason, it is advantageous if the third swivel axis is oriented parallel to the swivel axis and / or parallel to the first swivel axis and / or parallel to the second swivel axis.

[0023] It is advantageous if the first swivel bearing is positioned spaced apart from the swivel bearing with respect to the longitudinal direction of the rocker arm. In this way, the contact pressure setting can be achieved in a design-structurally simple manner.

[0024] It is furthermore advantageous if the first swivel bearing is positioned relative to the longitudinal direction of the rocker arm between the rotary bearing and the third swivel bearing. In this way, the swivel positioning of the rocker arm on the first swivel bearing can be predefined in a simple manner via the lever.

[0025] It is particularly advantageous if the lever is arranged and configured in such a way that the swivel positioning of the lever about the second swivel axis predefines the swivel positioning of the rocker arm about the first swivel axis and, in particular, at least one of the following features:

[0026] - the height positioning of the sweeper roller relative to the base;

[0027] - the contact pressure of the sweeper roller on the ground to be cleaned;

[0028] - the width of the sweeper roller acting on the ground to be cleaned.

[0029] In this way, an automatic adjustment can be achieved, wherein, in particular, an automatic adaptation to the respective ground properties is achieved.

[0030] For the same reason, it is advantageous if the lever is arranged and configured in such a way that, in a cleaning operation of the sweeper roller on the ground to be cleaned, the swivel positioning of the lever on the second swivel bearing is adjusted via a resultant force in a load section of the traction means (traction section, load section), wherein the resultant force in the load section is determined by the torque of the sweeper roller on the ground to be cleaned. Due to the reaction force or reaction torque of the sweeper roller when acting on the ground to be cleaned, a resultant force is present in the load section, which results in an adjustment of the swivel positioning of the lever and, in turn, in a corresponding adjustment of the swivel positioning of the rocker arm on the first swivel bearing. In turn, an adjustment process can thus be carried out in order to keep the sweeper roller in a position that is advantageous for effective cleaning or, in particular, to place it in an advantageous position when changing the ground.

[0031] Correspondingly, a positioning device is provided via the traction mechanism drive for positioning the sweeper roller on the ground to be cleaned via the rocker arm, wherein the positioning comprises an automatic adjustment via the lever. The positioning of the sweeper roller is predefined by the swivel positioning of the lever relative to the base.

[0032] In one design-structurally simple embodiment, the lever has a first web which is articulated on the base via the second swivel bearing and a second web which is connected to the first web in a swivelable manner about a fourth swivel axis via the fourth swivel bearing and which is oriented transversely to the first web. In this way, the rocker arm can be influenced in a simple manner via the lever so that it and, in turn, the sweeper roller can be positioned effectively relative to the ground to be cleaned for the cleaning process.

[0033] In one embodiment it is provided that the second web is connected to the first web in a manner resistant to relative translation, or can be set in a translational setting on the first web in a manner resistant to relative translation. If different translational settings are provided for the second web on the first web, then different cleaning strengths can be predefined, for example "weak", "medium" and "strong". Such translational settings can be set or changed by the operator, for example, by means of a pull cord.

[0034] It is therefore advantageous in terms of design to provide at least two separate translational settings in which the second web can be fixed to the first web in a manner resistant to relative translation, respectively. For example, three such translational settings are predefined. In each translational setting, the second web can be swung here relative to the first web.

[0035] It is provided that the second web is coupled to the rocker arm so that the swing setting of the rocker arm can be set accordingly. The coupling can be direct or indirect here.

[0036] In one embodiment, the second web is hingedly connected to the rocker arm in a swingable manner and, in particular, the second web is connected to the rocker arm in a swingable manner via a third swing bearing having a third swing axis. A simple design is thus achieved in terms of design, and the number of components can be kept low.

[0037] In an alternative embodiment, the second web is hingedly connected to an intermediate web and the intermediate web is hingedly connected to the rocker arm, wherein, in particular, the intermediate web is coupled to the rocker arm in a swingable manner about a third swing axis via a third swing bearing and the second web is hingedly connected to the intermediate web in a swingable manner about a fifth swing axis via a fifth swing bearing. An additional degree of freedom is thus achieved. In particular, a mechanical switch can be implemented via which the swingability of the lever about the second swing axis can be blocked or released. In particular, an automatic adjustment process can thus be activated or deactivated.

[0038] It is advantageous in terms of design that the length of the intermediate web between the hinged connection to the second web and the hinged connection to the rocker arm is less than the length of the second web between the hinged connection to the first web and the hinged connection to the intermediate web. For example, a crank lever with a dead point can thus be implemented in a simple manner.

[0039] In particular, at least one of the following features is provided:

[0040] - a mechanical switch is formed by means of the intermediate web, via which the swingability of the lever about the second swing axis can be blocked;

[0041] - the switch and in particular the intermediate web has at least one first position in which the lever is prevented from being able to swing about the second swing axis;

[0042] - in the at least one first position of the switch and in particular of the intermediate web, the rocker arm is able to swing freely about the first swing axis;

[0043] - in the at least one first position, the second web is oriented at an acute angle to the first web;

[0044] - in the at least one first position, the intermediate web is oriented at an obtuse angle to the second web;

[0045] - the switch and in particular the intermediate web has at least one second position in which the lever is able to be swung about the second swing axis;

[0046] - in the at least one second position, the second web is oriented at an obtuse angle to the first web;

[0047] - in the at least one second position, the intermediate web is oriented at an acute angle to the second web;

[0048] - the second web and the intermediate web form a crank, wherein in particular the at least one first position of the switch and in particular of the intermediate web is a dead centre position of the crank;

[0049] - the intermediate web has an action region for an operator, which action region is in particular configured such that the intermediate web can be pressed and / or pulled by the operator.

[0050] The coupling of the lever to the rocker arm can be achieved in a simple manner by one or more of the features described above. A mechanical adjustment can thereby be achieved. By virtue of the provision of the intermediate web with the first position and the second position, and in particular by virtue of the configuration as a crank, a mechanical switch can be achieved in a simple manner in order to prevent or release the automatic adjustment (regarding the swingability of the lever about the second swing axis).

[0051] By virtue of the dead centre position of the crank, the at least one first position of the switch (or of the intermediate web) can in particular be achieved in a simple manner and in a manner which is simple in terms of design.

[0052] It is particularly advantageous for the deflection element to be arranged on the first web. The first web can thereby be positioned in a specific swing position in relation to the base (on the second swing bearing) via the resultant tensile stress in the load section of the traction means, wherein the swing position depends on the nature of the floor to be cleaned. The swing position of the rocker arm on the first swing bearing can thereby also be predetermined.

[0053] Advantageously, the traction drive is assigned a switch, in particular a mechanical switch, by means of which the swivelability of the lever about the second swivel axis can be blocked. The automatic mechanical adjustment can thus be "switched off".

[0054] In one embodiment, it is provided that, when the swivelability of the lever is blocked by means of the switch, the rocker arm is supported in a swivel manner on the base and thus the cleaning roller is also supported in a swivel manner on the base.

[0055] Advantageously, at least one of the following features is provided:

[0056] - the switch is configured as a swivel switch;

[0057] - the switch has a dead point or a dead point region, in which the swivelability of the lever about the second swivel axis is blocked;

[0058] - the switch can be pressed into its swivel movement by an operator and can be pulled into the swivel movement.

[0059] A design-structurally simple construction of the switch is thereby achieved. The operator can operate the switch in a simple manner (in the case of a design-structurally simple construction) and achieve a blocking or unblocking of the swivelability of the lever.

[0060] In one design-structurally simple embodiment, the rocker arm has a first arm and a second arm spaced apart therefrom, wherein the cleaning roller is rotatably supported on the first arm and the second arm via a rotary bearing. A double-sided rotary support of the cleaning roller on the rocker arm can thereby be achieved in a simple manner. A force can thereby be optimally dissipated.

[0061] In one design-structurally simple embodiment, a link is connected to the first arm and the second arm and the link is supported on the base to form a first swivel bearing. The first swivel bearing can thereby be achieved in a simple manner. The first swivel bearing can be configured in a simple manner to be able to absorb relatively large forces generated, for example, in the cleaning process. An advantageous operability is achieved when the link is arranged in the region of the front end of the base relative to the direction of travel of the floor cleaning machine. In particular, an optimized space utilization of the floor cleaning machine is achieved. The link can thereby be positioned outside, for example, a dirt guide path, a suction unit, etc.

[0062] In one design-structurally simple embodiment, the traction drive is configured on one side relative to the cleaning roller. The number of components required can thereby be minimized. It is not necessary to provide a synchronization and similar components.

[0063] In one embodiment, the traction drive comprises a traction means tensioner, which is arranged in the idling section of the traction means. It is thereby possible to achieve a certain traction means tension in the idling section, which is lower than in the load section.

[0064] In particular, the traction drive comprises a drive element of the motor device, a deflection element on the lever and a driven element for the cleaning roller and for this comprises a traction means, wherein the traction means is closed. In one embodiment, the traction drive comprises only the aforementioned components. However, additional components can also be present.

[0065] In one embodiment, the traction drive additionally comprises a second deflection element, which is arranged on the rocker arm. The second deflection element is here located in the load section of the traction means. Depending on the application, an optimized traction means guidance can be achieved.

[0066] It is particularly advantageous if the second deflection element is arranged on the first oscillating bearing and in particular is located coaxially thereto. It is thereby possible to achieve at least approximately that the positioning of the rocker arm is not directly influenced by the traction means, but only indirectly via the positioning of the lever about the second oscillating axis.

[0067] In one embodiment, the second deflection element has a first track for the load section of the traction means and a second track for the idling section of the traction means. Thereby, the second deflection element can also be used, for example, as a traction tensioner for the idling section. It is thereby possible to keep the number of components low.

[0068] The traction means is in particular a belt or a chain. The belt is, for example, a flat belt or a toothed belt. A constructional solution with minimized slippage is preferred. The tension in the traction means is here to be chosen such that a resultant tension is achieved, which is transferred to the lever for its positioning. When the tension in the traction means is too great in certain situations, a "sensor system" can no longer be achieved.

[0069] In an easy-to-operate embodiment, a rechargeable battery device is provided for providing electrical energy for the motor device and, if necessary, for further energy-consuming elements of the floor cleaning machine. Thereby, the floor cleaning machine can be operated autonomously. The floor cleaning machine can also be operated with relatively low noise emissions.

[0070] For example, it is provided that a first receptacle for a first battery of the battery arrangement is arranged on the base and a second receptacle for a second battery is arranged on the base separately from the first receptacle, wherein the first battery positioned on the first receptacle is active in terms of the electrical energy output to the motor arrangement, and the battery positioned on the second receptacle is a replacement battery. Thereby, a long operating time is achieved while at the same time a structurally simple design is achieved. In this regard, reference is made to the not yet published German patent application No. 102020 109 694.1 of the same applicant of 7 April 2020. The content of the application is incorporated in its entirety.

[0071] In particular, at least one of the following features is provided:

[0072] - the floor cleaning machine is configured as a sweeper for textile floors;

[0073] - the sweeper roller is provided with a suction unit arrangement;

[0074] - a wheel arrangement for the floor cleaning machine is arranged on the base for a travelable operation of the floor cleaning machine;

[0075] - in the floor cleaning machine operation, the floor cleaning machine is supported on the floor to be cleaned by the wheel arrangement;

[0076] - the sweeper roller is positioned on the base between a front end of the base and the rear wheel arrangement;

[0077] - the floor cleaning machine is configured as a push-behind machine or as a ride-on machine;

[0078] - a support for an operator is arranged on the base, in particular designed for a standing operator.

[0079] Thus, a floor cleaning machine which is structurally simple to construct can be provided by a combination of one or more of the above-mentioned features, with which features it is possible for textile floors to be cleaned in an effective manner as well. During the cleaning process, the noise emission is relatively low.

[0080] Advantageously, a dirt collection container is provided, to which dirt can be conveyed from the sweeper roller, in particular having at least one of the following features:

[0081] - the dirt conveying is supported by a suction flow of the suction unit arrangement;

[0082] - a throw-in portion is provided, by which dirt is guided from the sweeper roller to the dirt collection container;

[0083] - the dirt collection container is arranged on the base in a removable manner;

[0084] - the dirt collection container is positioned on a rear side of the base.

[0085] By means of the suction flow support, it is possible to keep the dust emission into the environment low, in particular during the cleaning process.

[0086] In principle, the adjustment process according to the application can be applied to all common cleaning cleaning. When a throw-in is provided which guides the dirt from the cleaning roller to the dirt collection container, a simple design is obtained.

[0087] Due to the extractability of the dirt collection container, emptying can be achieved in a simple manner.

[0088] According to the application, a method of the type mentioned at the outset is provided, which can be carried out on a floor cleaning machine according to the application, wherein in the method the action of the cleaning roller on the ground to be cleaned is adjusted mechanically, wherein the swivel positioning of the lever on the second swivel bearing is predefined via the force input onto the load section of the traction means, and the swivel positioning of the lever on the second swivel bearing predefines the positioning of the rocker on the first swivel bearing.

[0089] By predefining the positioning of the rocker on the first swivel bearing, the positioning of the cleaning roller on the ground to be cleaned can also be predefined. Automatic adjustment is thereby achieved.

[0090] The criterion with respect to the ground properties is the reaction force of the ground on the cleaning roller. Via the load section, this reaction force can be transferred as a tensile stress onto the lever. The lever is then positioned accordingly and in turn transmits its positioning to the rocker.

[0091] The method according to the application has the advantages described in connection with the floor cleaning machine according to the application.

[0092] Further advantageous design options of the method according to the application have been explained in connection with the floor cleaning machine according to the application. BRIEF DESCRIPTION OF DRAWINGS

[0093] The following description of preferred embodiments in connection with the drawings serves to explain the application in more detail. Therein:

[0094] Figure 1 A perspective view of a first embodiment of a floor cleaning machine according to the application is shown, with a removed housing cover;

[0095] Figure 2 A top view of a floor cleaning machine according to Figure 1 is shown;

[0096] Figure 3 A sectional view along the line 3-3 of Figure 2 is shown;

[0097] Figure 4 A perspective view of a second embodiment of a floor cleaning machine according to Figure 1A side sectional view of a floor cleaning machine, which has a housing cover;

[0098] Figure 5 Showing with Figure 1 Similarly, the illustration shows a second embodiment of the floor cleaning machine according to the present invention, which has a switch in a blocked position;

[0099] Figure 6 Showing according to Figure 5 A magnified view of region A;

[0100] Figure 7 Showing with Figure 5 The same diagram, where the switch is in the non-blocking position;

[0101] Figure 8 Showing according to Figure 7 A magnified view of region B;

[0102] Figure 9 Showing with Figure 4 A similar illustration is shown of a third embodiment of the floor cleaning machine according to the present invention, wherein the switch is in the blocked position;

[0103] Figure 10 Showing according to Figure 9 A magnified view of region C;

[0104] Figure 11 Showing with Figure 9 The same diagram, where the switch is in the non-blocking position;

[0105] Figure 12 Showing according to Figure 11 A magnified view of region D;

[0106] Figure 13 Showing with Figure 4 A similar illustration of a fourth embodiment of the floor cleaning machine according to the present invention shows the switch in the blocked position;

[0107] Figure 14 Showing according to Figure 13 A magnified view of region E;

[0108] Figure 15 Showing with Figure 13 The same diagram, in which the switch is in the non-blocking position; and

[0109] Figure 16 Showing according to Figure 15 A magnified view of region F. Detailed Implementation

[0110] According to the first embodiment of the floor cleaning machine 10 of the present invention (Figures 1 to 4 ) comprises a base 12. The base 12 forms a base body of the floor cleaning machine 10.

[0111] In one embodiment, the base 12 is configured as a chassis 14.

[0112] The base 12 has a front end 16 and a rear end 18. The base 12 extends along an axis 20 Figure 2 ) between the front end 16 and the rear end 18.

[0113] The axis 20 is parallel to a forward (traveling) direction 22 of the floor cleaning machine 10 when the floor cleaning machine 10 is in normal operation for cleaning a floor 23.

[0114] On the base 12, a wheel arrangement 24 is arranged. The wheel arrangement 24 comprises a rear wheel arrangement 26 and a front wheel arrangement 28. In one embodiment, the rear wheel arrangement 26 (relative to the forward (traveling) direction 22) comprises a left rear wheel 30a and a right rear wheel 30b.

[0115] The rear wheel arrangement 26 with the left rear wheel 30a and the right rear wheel 30b is arranged in the region of the rear end 18 of the base 12 (chassis 14).

[0116] The rear wheel arrangement 26 with the left rear wheel 30a and the right rear wheel 30b has a common (geometrical) wheel axis 32.

[0117] In one embodiment, the front wheel arrangement 28 is formed by a roller 34. The roller 34 is arranged in the region of the front end 16.

[0118] In one embodiment, the roller 34 is configured as a steering roller.

[0119] On the base 12, a cleaning roller unit 36 is arranged. The cleaning roller unit 36 is a main roller unit of the floor cleaning machine 10. In addition to the cleaning roller unit 36, one or more side brooms (not shown in this figure) can be provided.

[0120] The cleaning roller unit 36 is positioned relative to the base 12 between the front end 16 and the rear end 18. In one embodiment, the cleaning roller unit 36 is positioned relative to the axis 20 between the front wheel arrangement 28 and the rear wheel arrangement 26.

[0121] The cleaning roller unit 36 is positioned on the base 12 such that a cleaning roller 64 (see below) of the cleaning roller unit 36 protrudes at least in the cleaning operation beyond an underside 38 of the base 12.

[0122] On the base 12, a rocker arm 40 is supported on a first swivel bearing 42 in a swivelable manner about a first swivel axis 44 Figure 2 ) between the front end 16 and the rear end 18.

[0123] The first swivel axis 44 is oriented parallel to the wheel axis 32. The first swivel axis is oriented transversely and in particular perpendicularly to the direction of travel 22.

[0124] The first swivel axis 44 is oriented parallel to the axis 20 of the base 12.

[0125] In one embodiment, the rocker arm 40 comprises a first arm 46 and a second arm 48 parallel to the first arm. The first arm 46 and the second arm 48 are connected to one another via a connecting rod 50. Figure 2 The connecting rod 50 is located in the region of the front end 16 of the base 12 and in particular in front of this front end 16. Furthermore, in one embodiment, a height direction 52 of the connecting rod 50 relative to the base 12 is oriented above the front wheel arrangement 28. Figure 4 The height direction 52 is oriented transversely and in particular perpendicularly to the underside 38. The height direction 52 is perpendicular to the ground 23 when the floor cleaning machine 10 is normally placed on the ground 23 to be cleaned.

[0126] The connecting rod 50 is coaxial with the first swivel axis 44.

[0127] The connecting rod 50 is rotatably supported on the base 12 via a first tongue 54 and a spaced-apart second tongue 56. The connecting rod 50 forms, via this rotatable support, a first swivel bearing 42 of the rocker arm 40.

[0128] The first arm 46 and the second arm 48 are each connected to the connecting rod 50 against relative rotation, and the connecting rod 50 is rotatably supported on the base 12 via the tongues 54, 56 about the first swivel axis 44.

[0129] In one embodiment, a bracket 58 is arranged on the base 12 in the region of the front end 16. The front wheel arrangement 28 is fitted on this bracket 58.

[0130] The bracket 58, which is arranged centrally relative to the side of the base 12, has a tongue arrangement 60 Figure 1 with openings 62. The connecting rod 50 is inserted through these openings 62.

[0131] It is possible here for the connecting rod 50 to be freely inserted through the openings 62 or for a plain bearing for the connecting rod 50 to be formed on the bracket 58 via the tongue arrangement 60.

[0132] The rocker arm 40 laterally surrounds the base 12 with its first arm 46 and its second arm 48. To this end, the connecting rod 50 is located in front of the front end 16.

[0133] The cleaning roller unit 36 comprises a cleaning roller 64 and a rotary bearing 66. Via the rotary bearing 66, the cleaning roller 64 is rotatably supported on the rocker arm 40 about a rotary axis 68.

[0134] The cleaning roller 64 is supported on the first arm 46 and on the second arm 48 via a rotary bearing 66.

[0135] The cleaning roller unit 36 follows the swivel movement of the rocker arm 40 about the first swivel axis 44 relative to the base 12.

[0136] In the embodiment shown, the cleaning roller 64 is formed in one piece.

[0137] The cleaning roller 64 is provided with a brush. The brush is in particular configured to be able to clean textile floors and in particular carpeted floors via the floor cleaning machine 10.

[0138] The rotary axis 68 of the rotary bearing 66 for the rotation of the cleaning roller 64 is parallel to the first swivel axis 44. It is parallel to the wheel axis 32.

[0139] Furthermore, the rotary axis 68 is oriented transversely and in particular perpendicularly to the axis 20 of the base 12.

[0140] Furthermore preferably, the rotary axis 68 is oriented parallel to the floor 23 to be cleaned when the floor cleaning machine 10 is placed on the floor 23 via the wheel arrangement 24 for normal cleaning operation.

[0141] The floor cleaning machine 10 has a placement plane 70 Figure 3 , Figure 4 The placement plane 70 is predefined by the rear wheel arrangement 26 and the front wheel arrangement 28. The placement plane 70 coincides with the plane of the floor 23 to be cleaned when the floor cleaning machine 10 is normally placed on a flat floor 23 to be cleaned. The wheel axis 32 is parallel to the placement plane 70. The rotary axis 68 is parallel to the placement plane 70 in the height direction 52 (and is spaced apart therefrom); the height direction 52 is perpendicular to the placement plane 70.

[0142] For the rotational drive of the cleaning roller 64, a motor arrangement 72 is provided. The motor arrangement 72 comprises an electric motor. The electric motor is fixedly arranged on the base 12 via a bracket.

[0143] In one embodiment, the motor arrangement 72 has a motor shaft 74 with a rotary axis 76 Figure 1 The rotary axis 76 is parallel to the rotary axis 68 of the cleaning roller 64.

[0144] In particular, the motor arrangement 72 is arranged above the cleaning roller 64 relative to the height direction 52. In the embodiment shown, the motor arrangement 72 is also positioned above the rocker arm 40 on the base 12 relative to the height direction 52.

[0145] The floor cleaning machine 10 has a drive device 78. The drive device 78 comprises a motor device 72. The motor shaft 74 is here the drive shaft of the drive device 78.

[0146] Furthermore, the drive device 78 comprises a torque transmission device 80, by means of which the torque of the motor device 72 can be transmitted to the cleaning roller 64 for its rotation about the rotational axis 68. To this end, the cleaning roller 64 is provided with a corresponding shaft 82, which is supported on the rotational bearing 66. The shaft 82 forms a driven shaft of the drive device 78.

[0147] The motor shaft 74 and the driven shaft 82 are spaced apart from one another, and here in particular in the height direction 52. They can likewise be spaced apart with respect to the axis 20 or aligned with respect to the axis 20.

[0148] The torque transmission device 80 is configured as a traction mechanism transmission 84 (also traction transmission or wrap-around transmission). The traction mechanism transmission 84 comprises traction means 86. Via the traction means 86, the torque of the motor device 72 is transmitted to the cleaning roller 64 for its rotation about the rotational axis 68. The traction means 86 are here closed. The traction means 86 are in particular a closed belt or a closed chain.

[0149] The traction means 86 here have a load section 88 (load or traction section) and an unloaded section 90. Via the load section 88 (load section), the force from the motor device 72 is transmitted here to the shaft 82. The unloaded section 90 (unloaded section) is in part a return in the case of the closed traction means 86.

[0150] The traction mechanism transmission 84 can in principle be configured in a force-locked or form-locked manner.

[0151] In the embodiment as shown in Figures 1 to 4 The only traction mechanism transmission 84 is here associated with the rocker arm 40 and here only with one arm of the rocker arm 40. In the embodiment shown, the traction mechanism transmission 84 is associated only with the first arm 46. The drive to the cleaning roller 64 is thus only on one side. A structurally simple, compact, space-saving and also component-saving configuration is thereby achieved.

[0152] It is in principle also possible for the cleaning roller 64 to be driven for rotational movement about the rotational axis 68 on both sides (not shown in the figures) in order to ensure corresponding synchronization.

[0153] On the base 12, a support 92, in particular plate-shaped, is arranged spaced apart from the underside 38. The motor device 72 is arranged on one side of the support 92. On the other side of the support 92, a roller 94 is arranged on the shaft 82 of the motor device 72, which roller is connected to the motor shaft 74 against relative rotation, and the traction means 86 are guided on the roller.

[0154] On the support 92, a lever 96 is hingedly articulated on a second swivel bearing 98 in a swivelable manner about a second swivel axis 100 (see in particular Figure 1 ).

[0155] The lever 96 is thus hingedly articulated on the base 12 in a swivelable manner.

[0156] The lever 96 is further hingedly articulated with the rocker arm 40 and here with the first arm 46 via a third swivel bearing 102 in a swivelable manner about a third swivel axis 104.

[0157] The second swivel axis 100 and the third swivel axis 104 are parallel to one another. Furthermore, they are respectively parallel to the rotational axis 68 or the rotational axis 76.

[0158] On the lever 96, a deflection element 106, in particular a deflection roller, is arranged, and on the deflection roller, the traction means 86 are guided here in the load section 88.

[0159] In one embodiment (Figures 1 to Figure 4 ), the lever 96 comprises a first web 108 and a second web 110. The first web 108 is articulated with the base 12 (support 92) via the second swivel bearing 98. The second web 110 is articulated with the rocker arm 40 and here with the first arm 46 via the third swivel bearing 102.

[0160] The first web 108 and the second web 110 are connected to one another via a fourth swivel bearing 112 in a swivelable manner about a fourth swivel axis 114.

[0161] The fourth swivel axis 114 is respectively parallel to the third swivel axis 104 or the second swivel axis 100.

[0162] The deflection element 106 is positioned on the first web 108.

[0163] The lever 96 is coupled with the rocker arm 40 via the second web 110 and here such that, with respect to a longitudinal direction 116 of the rocker arm 40, Figure 4 the first swivel bearing 42 is located on the first arm 46 between the rotational bearing 66 and the third swivel bearing 102.

[0164] The lever 96 is coupled with the rocker arm 40 such that a swivel positioning of the rocker arm 40 on the first swivel bearing 42 and thus also a positioning of the cleaning roller 64 in the height direction 52 can be set via the lever 96.

[0165] It is also possible in principle for the second web 110 to be connected to the first web 108 in a manner resistant to relative translation but swivelable.

[0166] In the shown embodiment according to Figures 1 to 4 the swivel axis 44, the second web 110 is settable in its translational positioning on the first web 108. For example, the second web 110 is provided with a pin, while the first web 108 has a plurality of discrete, spaced-apart openings into which the pin on the second web 110 can be inserted respectively. In each of these positionings, swivelability about the fourth swivel axis 114 can be achieved.

[0167] By means of different translational positionings of the second web 110 on the first web 108, different positionings (working positionings) of the cleaning roller 64 in the height direction 52 can be predefined. In particular, these positionings can be working positionings for carpeted floors with different pile lengths or for effectively cleaning smooth floors.

[0168] On the rocker arm 40 and thus on the first arm 46, a second deflection element 118 of a traction means drive 84 is arranged. This second deflection element 118, which is in particular configured as a deflection roller, is arranged in particular on the first swivel bearing 42 and is preferably arranged coaxially with the first swivel axis 44.

[0169] The traction means 86 is guided in the load section 88 via the second deflection element 118.

[0170] The traction means drive 84 comprises a traction means tensioner 120, which is arranged in particular in a fixed and swivelable manner on a support 92 (with a swivel axis parallel to the first swivel axis 44). The traction means tensioner has a further deflection element 122, which is in particular in the form of a deflection roller. The traction means tensioner 120 acts here on the unloaded section 90 of the traction means 86.

[0171] The closed traction means 86 is guided closed via a roller 94 on the motor shaft 74 (drive shaft), the deflection element 106 on the lever 96, the second deflection element 118 on the rocker arm 40, a corresponding guide element on the shaft 82 (driven shaft) and the further deflection element 122 of the traction means tensioner 120.

[0172] The force transmission from the motor device 72 to the cleaning roller 64 takes place in a load section 88, which extends on the traction means 86 from the roller 94 to the respective elements on the deflection element 106, the second deflection element 118 and the shaft 82.

[0173] The remaining part of the traction means 86 is an unloaded section 90, which then lies between the elements on the shaft 82 and the motor shaft 74, wherein the traction means tensioner 120 acts on the traction means 86 in the unloaded section via its further deflection element 122 between these, in order to generate a certain tension stress.

[0174] In one embodiment, a battery device 124, in particular a rechargeable battery device 124 (accumulator device), is provided for operating the motor device 72 (and further energy-consuming components of the floor cleaning machine 10). The battery device is arranged on a receptacle 126 on the base 12.

[0175] It is possible in principle for there to be a plurality of receptacles, and for example for a non-active battery device to be arranged on the receptacle as a replacement battery device. In this regard, reference is made to the non-prepublished German patent application No. 10 2020 109 694.1 of the same applicant of 7 April 2020, the content of the application being incorporated in its entirety.

[0176] A dirt collection container 128 is arranged in a detachable manner on the base 12. The dirt collection container 128 is arranged such that dirt can be thrown from the cleaning roller 64 into the dirt collection container 128 in a throw-in section 130 Figure 3 ).

[0177] In the operation of the floor cleaning machine 10, the cleaning roller 64 rotates in a rotational direction 132 Figure 3 ). Dirt is picked up by the brush of the cleaning roller 64 and carried in the rotational direction 132 and thrown into the dirt collection container 128 in the throw-in section 130.

[0178] The rotational direction 132 of the rotation of the cleaning roller 64 about the rotational axis 68 is such that the dirt is thrown into the dirt collection container 128 in the throw-in section 130 from above to some extent (relative to the height direction 52). At the contact area of the cleaning roller 64 with the floor 23 to be cleaned, the rotational direction 132 is oriented parallel to the travel direction 22.

[0179] On the base 12 there is arranged a suction unit device 134. This suction unit device generates a suction flow. The suction flow generated by the suction unit device 134 supports the transport of dirt into the dirt collection container 128. The main function of the generated suction flow is to keep the dust load of the surroundings low and to channel the dirt particles thrown out by the cleaning roller 64 to a certain extent into the dirt collection container 128.

[0180] The suction unit device 134 is assigned a filter unit 136, which can be cleaned via a cleaning device 138 and, for example, can be cleaned manually. The cleaning can be effected, for example, by shaking the filter unit 136 or by loading the filter unit 136 with an air flow. The cleaning can be triggered manually and driven manually. The cleaning can be triggered manually and run automatically, or triggered automatically and run automatically.

[0181] Reference is made to the construction of one embodiment of the filter unit 136 to the non-prepublished German patent application No. 10 2020 109 656.9 of the same applicant, which was filed on April 7, 2020. The content of the application is incorporated in its entirety.

[0182] In order to cover the base 12 upwards, forwards and sideways, there is provided a housing cover 140 Figure 4 . This housing cover is removed in the illustration Figures 1 to 3 .

[0183] In one embodiment (not shown in the figures), at least one side broom is arranged on the base 12. This side broom in particular projects laterally beyond the assigned side edge. Via the side broom a cleaning process of the near edge (for example at the edge or at the skirting) can be carried out. The side broom is driven to rotate about a rotation axis. For this there is provided a corresponding drive, which is supplied with electrical energy via the battery device 124.

[0184] The suction unit device 134 is also supplied with electrical energy via the battery device 124.

[0185] It is also possible in principle that the side broom is driven via the motor device 72.

[0186] For example, the side broom is arranged in the region of the front end 16 of the base 12.

[0187] On the base 12 there is arranged a support (bow) 142 for the operator and in particular for a standing operator. This support 142 is arranged in the region of the rear end 18.

[0188] The floor cleaning machine 10 is thus constructed as a push-behind machine, wherein an operator standing behind the floor cleaning machine 10 pushes this floor cleaning machine on the floor 23 to be cleaned via the support.

[0189] In one embodiment, the support 142 comprises a handrail 144 which is spaced apart from the base 12. The handrail 144 is connected to the base 12 via a first strut 146a and a second strut 146b which is spaced apart from the first strut 146a.

[0190] In one embodiment, the support 142 is arranged in a pivotable manner on the base 12. Thereby, a matching to the height of the operator (standing operator) can be carried out if necessary. Furthermore, the support 142 can be folded onto the base 12 and in particular onto the housing cover 140 in a storage position of the floor cleaning machine 10, so that the dimensions of the floor cleaning machine 10 in the height direction 52 and also in the longitudinal direction along the axis 20 can be reduced thereby.

[0191] The floor cleaning machine 10 is operated as follows:

[0192] In the operation of the floor cleaning machine 10, the motor device 72 is activated. The motor shaft 64 is rotated about the rotation axis 68. The shaft 82 is driven via the traction mechanism transmission 84 with the traction means 86 and rotates the cleaning roller 64 in the rotation direction 132. The cleaning roller 64 acts on the floor 23 to be cleaned and carries dirt.

[0193] The dirt carried by the cleaning roller 64 is thrown into the dirt collection container 128.

[0194] The transfer of the dirt into the dirt collection container 128 is supported by the suction flow of the suction unit device 134. In particular, the dust load on the surroundings is kept low by the suction flow.

[0195] The operator stands behind the floor cleaning machine 10 and guides this, in particular in the forward direction 22, on the floor 23 to be cleaned via the support 142.

[0196] In principle, the cleaning roller 64 is designed in such a way that it can be used to clean textile materials and in particular carpeted floors. In principle, the contact pressure of the cleaning roller 64 acting on the textile material of the floor to be cleaned determines the cleaning effect. The contact pressure determines the width of the cleaning roller 64 acting on the textile material. Different contact pressures (acting widths) are often meaningful for optimizing the cleaning effect for different textile materials and different pile heights. It is furthermore desirable that the floor cleaning machine 10 can also be used effectively to clean smooth or hard floors.

[0197] The positioning of the rocker 40 relative to the height direction 52, and thus relative to the base 12, is thus automatically and in particular by means of automatic adjustment set by means of the positioning device of the cleaning roller 64 by the traction mechanism drive 84 with the lever 96. The contact pressure or the effective width of the cleaning roller 64 is thus also automatically adjusted. The operator can thus pass over different ground and automatically achieve a good cleaning result. For example, the operator can pass from a ground with a textile material having a first pile height over a smooth ground to a ground with a textile material having a second pile height, which is different from the first pile height, wherein an effective cleaning is achieved on each ground area. The operator does not need to take care of the setting of the positioning device here, but this is automatically done during the adjustment.

[0198] During the cleaning, the cleaning roller 64 is subjected to a torque as a result of the action on the ground 23 to be cleaned. This results in a corresponding (reaction) force F in the load section 88 (see Figure 4 ). This force is transmitted via the deflection element 106 to the lever 96. Depending on the size of the force F, this can result in a repositioning of the lever 96 on the second swivel bearing 98. This repositioning of the lever 96 and thus of the first web 108 acts via the second web 110 on the rocker 40. This can result in a repositioning of the rocker 40 about the first swivel axis 44.

[0199] The new positioning of the cleaning roller 64 relative to the base 12 in the height direction 52 is thus set. The repositioning takes place here until a corresponding force balance exists.

[0200] An optimized cleaning result is thus achieved in the case of a corresponding predefined working point.

[0201] The working point can be predefined and set by means of the stepped arrangement of the second web 110 relative to the first web 108 via the opening. This predefined does not change here during operation.

[0202] For example, if a carpet ground is passed over a smooth ground during the cleaning operation of the floor cleaning machine 10, the reaction torque acting on the cleaning roller 64 is usually reduced. As a result, the first web 108 is moved about the second swivel axis 100 in the direction of the ground 23 downwards. This movement is transmitted to the second web 110, which then correspondingly pivots the rocker 40 away from the ground 23 upwards. The contact force or the width of the cleaning roller 64 acting on the ground 23 is thus reduced.

[0203] For example, if the floor cleaning machine 10 is brought from a smooth floor to a textile floor or from a textile floor to another textile floor with a greater pile height, the reaction torque on the cleaning roller 64 increases. The force F increases. This causes the first web 108 to pivot upwards (away from the floor 23) about the second pivot axis 100. This in turn causes the second web 110 to be carried upwards and thus the rocker arm 40 to be swung towards the floor 23. The contact pressure increases here or the width on which the cleaning roller 64 acts on the floor 23 increases.

[0204] The lever 96, which is provided with the deflection element 106, can pivot on the base 12. This is indicated by a double arrow with the reference numeral 148. This is transmitted to the rocker arm 40 by means of the second web 110. This is indicated in Figure 4 Figure 4 by a double arrow with the reference numeral 150.

[0205] The height positioning of the cleaning roller 64 relative to the base 12 can thus be adjusted for optimum cleaning results and is automatically adjusted here and in particular during the automatic adjustment.

[0206] The adjustability of the height positioning is indicated in Figure 4 by a double arrow 152 in dashed line.

[0207] According to the application, a mechanical, automatic adjustment of the cleaning roller is provided via the traction mechanism transmission 84 with the lever 96 and the deflection element 106. A traction force is introduced via the load section 90 (load segment) of the traction means 86, which acts on the lever 96 and positions it accordingly. This results in an automatic implementation of the optimized cleaning performance on different surfaces without the need for readjustment by the operator.

[0208] For example, a toothed belt or chain is used as traction means 86. This results in a high efficiency and thus a long operating time of the battery device 124. The respective torque transmission 80 has a low maintenance rate.

[0209] The positioning of the second web 110 on the first web 108 or the configuration of the lever 96 can be realized in a simple manner. It is thus possible, for example, to adjust the level of normal, light or heavy soiling.

[0210] In an embodiment in which the traction means 86 is a belt, the deflection element 106 is a pulley. The tension in the traction means 86 (in the case of a belt: belt tension) determines the positioning of the lever 96 relative to the second pivot axis 100.

[0211] In principle, it is desirable to minimize the slip on the traction mechanism transmission 84, so that in particular a toothed belt or chain with a force-locking coupling is advantageous as traction means 86. ​

[0212] The typical diameter of the cleaning roller 64 is 250 mm.

[0213] By means of the solution according to the application it is effectively prevented that the cleaning roller 64 "sticks" into the carpet and thus an undesirable cleaning result and an unnecessary high energy consumption are avoided. The self-adjustment according to the tension in the traction means 86 takes place on the traction mechanism transmission 84.

[0214] The traction means tensioner 120 acts in the dead zone 90 of the traction means and has a correspondingly weaker belt tension compared to the belt tension in the load zone 88.

[0215] The traction means transmission 84 is constructed and dimensioned such that a force transmission for positioning the lever 96 is achieved by the tension in the traction means.

[0216] The floor cleaning machine 10 has been explained as a hand-guided and in particular hand-pushed push-behind machine.

[0217] The solution according to the application for automatically adjusting the positioning of the cleaning roller 64 on the floor 23 to be cleaned can for example also be used for floor cleaning machines with a travel drive and in particular for self-propelled floor cleaning machines.

[0218] Figures 5 to 8 The second embodiment of a floor cleaning machine according to the application shown and designated 154 is in principle constructed identically to the floor cleaning machine 10. In the floor cleaning machine 154, identical elements are designated with the same reference numerals as in the floor cleaning machine 10. The floor cleaning machine 154 can be regarded as a variant of the floor cleaning machine 10 with an additional switch. The floor cleaning machine 154 has a traction mechanism transmission 84' which is changed compared to the traction mechanism transmission 84. The constructional solution differs essentially here in the construction of the second link 110' and its articulation.

[0219] As described above with regard to the second link 110, the second link 110' is articulated on the first link 108 in a manner that it can be swung about a fourth swing axis 114 and in particular the respective positioning of the second link 110' can be adjusted with regard to the translatory positioning on the first link 108.

[0220] An intermediate link 156 is provided which is articulated with the rocker arm 40 via a third swing bearing 102'. The respective third swing axis of the third swing bearing 102' is parallel to the rotation axis 68.

[0221] The intermediate link 156 is hinged to the second link 110' in a manner oscillatable about a fifth oscillation axis via a fifth oscillation bearing 158. The fifth oscillation axis associated with the fifth oscillation bearing 158 is parallel to the fourth oscillation axis or to the third oscillation axis or to the second oscillation axis or to the first oscillation axis or to the rotation axis 68.

[0222] A toggle lever is formed via the intermediate link 156 and the second link 110' (see Figure 6 and Figure 8 ).

[0223] In the floor cleaning machine 154, the second link 110 is divided into the second link 110' and the intermediate link 156 in comparison with the floor cleaning machine 10. Thereby an additional degree of freedom is provided.

[0224] The intermediate link 156 has a hinged position to the rocker arm 40 via a third oscillation bearing 102'. The intermediate link has a hinged position to the second link 110' via a fifth oscillation bearing 158. The second link 110' in turn has a hinged position to the first link 108 via a fourth oscillation bearing 112 and the above-mentioned hinged position to the intermediate link 156 via the fifth oscillation bearing 158.

[0225] In one embodiment, the length of the second link 110' between its hinged positions is greater than the length of the intermediate link 156 between its hinged positions (see Figure 6 ).

[0226] A mechanical switch 160 is formed, via which it can be switched whether the oscillatability of the first link 108, in turn of the deflection element 106, about the second oscillation axis 100 is released or blocked. Correspondingly, the above-mentioned automatic adjustment process can be realized when released, while this automatic adjustment process cannot be realized when blocked.

[0227] In a first position 162 of the switch 160 shown in Figure 5 and Figure 6 , the oscillatability of the first link 108, in turn also of the lever 96 on the second oscillation bearing 98, about the second oscillation axis 100 is blocked.

[0228] In the first position 162, the toggle lever, which is the combination of the intermediate link 156 and the second link 110, is in a dead point.

[0229] It is provided here in particular that a stop 164 for the intermediate link 156 (or for the second link 110') is arranged on the base 12 or on the rocker arm 40 in order to predefine the dead point of the toggle lever (see also Figure 7 and Figure 8 ).

[0230] In the first position 162, the swivel positioning of the first web 108 is fixed by means of the second web 110' and the intermediate web 156.

[0231] In the first position 162, the rocker arm 40 can be freely swiveled.

[0232] The deflection element 106 has a purely deflection function and does not cause a matching of the positioning of the first web 108 relative to the second swivel axis 100.

[0233] In the first position 162, the second web 110' is at an acute angle 166 (see Figure 6 ) to the first web 108 (relative to the respective longitudinal direction). This acute angle is here oriented in an anti-clockwise and in an angle in a top view according to Figure 6 .

[0234] The second web 110' is thus at an obtuse angle 168 with respect to the longitudinal axis of the intermediate web 156.

[0235] As indicated by the double arrow 170, in the first position 162 (dead point position of the lever), the swivel movement of the first web 108 and thus of the entire lever 96 about the second swivel axis 100 is blocked.

[0236] The switch 160 can be brought into a second position 172 (or a plurality of second positions 172) in which the swivel movement of the first web 108 about the second swivel axis 100 is released. This is indicated in Figure 8 by a double arrow with reference 174. In this second position 172, the first web 108 is at an obtuse angle 176 Figure 8 ) to the second web 110'. The second web 110' is at an acute angle 178 to the intermediate web 156.

[0237] In the second position 172 (in which, as mentioned above, a plurality of second positions 172 can be provided), the swivel movement of the first web 108 about the second swivel axis 100 is released. Thereby, the tension in the respective traction means 86 can predefine the swivel positioning of the first web 108 about the second swivel axis 100, whereby the swivel positioning of the rocker arm 40 on the first swivel axis 44 is in turn predefined via the second web 110' and the intermediate web 156. An automatic adjustment of the height positioning of the squeegee roller 64 relative to the base 12 or the ground 23 (with a corresponding automatic adjustment of the contact pressure on the ground 23 to be cleaned or the width of the squeegee roller 64 acting on the ground 23 to be cleaned) is then achieved.

[0238] Therefore, the floor cleaning machine 154 performs the functions described above in conjunction with the floor cleaning machine 10 in the second position 172 of the switch 160.

[0239] An operating area 180 for the operator is provided on the intermediate connecting piece 156 extending beyond the hinge position with the first connecting piece 108. Through this operating area 180, the operator can act on the intermediate connecting piece 156 and press it into the first position 162, or press or pull it from the first position 162 into the second position 172.

[0240] In particular, the action area 180 is designed to enable the operator to press for swinging motion in one direction and pull for swinging motion in the corresponding opposite direction.

[0241] For example, starting from the first position 162, the operator can establish the second position 172 by acting on the action area 180 and, in particular, by pulling to cause the intermediate connecting piece 156 to swing accordingly. Figure 7 , Figure 8 ).

[0242] From the second position 172 ( Figure 7 , 8 Starting from this point, the operator can bring it to the first position 162 by pressing the middle connecting piece 156 when it is applied to the action area 180. Figure 5 , Figure 6 )middle.

[0243] In the case of the floor cleaner 154, the operator can release (second position 172) or stop (first position 162) the automatic mechanical adjustment via a mechanical switch 160 implemented by a crank in the case of the floor cleaner 154. The operator can release (second position 172) or stop (first position 162) the automatic mechanical adjustment via a traction mechanism transmission device 84' having a swingable lever 96.

[0244] In particular, when automatic adjustment is prevented, the rocker arm 40 with the cleaning roller 64 can swing freely.

[0245] In the traction mechanism transmission 84 or 84' of the floor cleaning machine 10 or 154, the traction device 86 is guided on the deflection element 106 on the first contact plate 108, the second deflection element 118 on the rocker arm 40, and an optional additional deflection element 122 of the traction device tensioner 120. Torque transmission occurs from the input shaft to the driven shaft.

[0246] exist Figures 9 to 12 The third embodiment of the floor cleaning machine according to the invention, shown and marked with 182, includes a traction mechanism transmission device 84", which is in principle identical in configuration to the traction mechanism transmission device 84'. Identical components are referred to by the same reference numerals.

[0247] The traction mechanism transmission 84" differs from the traction mechanism transmission 84' in the guiding of the traction means 86". The traction means 86" are guided on the rollers 94 connected to the motor shaft 74, on the deflection element 106 arranged on the first web 108, and on the (driven) shaft 82 on the roller element. In contrast to the traction mechanism transmission 84', there is no guiding provided on the second deflection element 118 arranged on the first oscillating bearing 42, or the second deflection element 118 is not present at all.

[0248] The load section 184 (load segment) of the traction means 86" is located between the rollers 94 and the coupling to the shaft 82.

[0249] In the embodiment shown, the traction mechanism transmission 84" comprises a first web 108, a second web 110' and an intermediate web 156 structure identically to the traction mechanism transmission 84'. A mechanical switch 160 is provided, which has a first position 162 Figure 11 , Figure 12 ) and a second position 172 Figure 9 , Figure 10 ). The mode of operation is identical to that described above in connection with the traction mechanism transmission 84'.

[0250] The mechanical adjustment is identical to that described above in connection with the floor cleaning machine 10 or 154. Even in the case of the traction means 86' being guided in the traction mechanism transmission 84" just described, by means of the tension in the load section 184 (in the second position 172 of the switch 160), the first web 108 is matched in its positioning and the positioning of the rocker 40 relative to the first oscillating axis 44 is matched accordingly, in order to thus set the contact pressure of the cleaning roller 64 on the floor to be cleaned or the width of the action of the cleaning roller 64 on the floor to be cleaned.

[0251] The traction mechanism transmission 84" is described in connection with the switch 160. It is also possible for there to be a guiding, such as in the traction means 86" (see Figure 4 ), when the switch 160 is not present.

[0252] In Figures 13 to 15 the further embodiment of the floor cleaning machine according to the application shown and designated there with 186 comprises a traction mechanism transmission 188, which is constituted in principle identically to the traction mechanism transmission 84'. The same reference numerals are used for identical elements. A first web 108, a second web 110' hinged thereto and an intermediate web 156 are provided. A switch 160 is formed thereby.

[0253] Figure 13 , Figure 14The first position 162 of switch 160 is shown in the figure. Figure 15 , Figure 16 The second position 172 of switch 160 is shown.

[0254] A second deflecting element 190 is arranged on the rocker arm 40 and on the first oscillating bearing 42. The second deflecting element is configured as a deflecting roller. The second deflecting element 190 guides both the load section 192 and the unloaded section 194 of the traction device 196. In particular, the second deflecting element 190 has a first track for the load section 192 and a separate second track for the unloaded section 194.

[0255] The second deflection element 190 can also be used as a tensioner, on which the unloaded section 194 of the traction device 196 is guided.

[0256] Thus, the traction device 196 is guided in its load section 192 from the roller 94 via the deflection element 106 on the second deflection element 190 on the rocker arm 40 to the roller element connected to the shaft 82.

[0257] From the roller element, the traction device 196 is guided to the roller 94 via the second deflection element 190 (at its second path) in the unloaded section 194.

[0258] As in the above embodiment, when the switch 160 is in the second position 172, the contact pressure of the sweeping roller 64 on the ground to be cleaned can be automatically adjusted.

[0259] Even when the mechanical switch 160 is not present, the traction device 196 can be guided in the traction mechanism transmission device 188.

[0260] List of reference numerals

[0261] 10. Floor cleaning machine (first embodiment)

[0262] 12 bases

[0263] 14 Chassis

[0264] 16 Frontend

[0265] 18 Backend

[0266] 20 axis

[0267] 22 Forward (direction)

[0268] 23 Ground

[0269] 24-wheel device

[0270] 26 Rear wheel assembly

[0271] 28 front wheel device

[0272] 30a left rear wheel

[0273] 30b right rear wheel

[0274] 32 wheel axis

[0275] 34 roller

[0276] 36 cleaning roller unit

[0277] 38 lower side

[0278] 40 swing arm

[0279] 42 first swing bearing

[0280] 44 first swing axis

[0281] 46 first arm

[0282] 48 second arm

[0283] 50 connecting rod

[0284] 52 height direction

[0285] 54 first tongue

[0286] 56 second tongue

[0287] 58 holder

[0288] 60 tongue device

[0289] 62 opening

[0290] 64 cleaning roller

[0291] 66 rotation bearing

[0292] 68 rotation axis

[0293] 70 placement plane

[0294] 72 motor device

[0295] 74 motor shaft

[0296] 76 rotation axis

[0297] 78 drive device

[0298] 80 torque transmission device

[0299] 82 shaft

[0300] 84 traction drive

[0301] 84' traction drive

[0302] 84 traction mechanism transmission

[0303] 86 traction means

[0304] 86' traction means

[0305] 88 load section

[0306] 90 unloaded section

[0307] 92 carrier

[0308] 94 roller

[0309] 96 rod

[0310] 98 second swivel bearing

[0311] 100 second swivel axis

[0312] 102 third swivel bearing

[0313] 102' third swivel bearing

[0314] 102" third swivel bearing

[0315] 104 third swivel axis

[0316] 106 deflection element

[0317] 108 first web

[0318] 110 second web

[0319] 110' second web

[0320] 112 fourth swivel bearing

[0321] 114 fourth swivel axis

[0322] 116 longitudinal direction

[0323] 118 second deflection element

[0324] 120 traction means tensioner

[0325] 122 further deflection element

[0326] 124 battery device

[0327] 126 receptacle

[0328] 128 dirt collection container

[0329] 130 throw-off portion

[0330] 132 direction of rotation

[0331] 134 suction group device

[0332] 136 filter unit

[0333] 138 purification device

[0334] 140 housing cover

[0335] 142 bracket

[0336] 144 handgrip

[0337] 146a first strut

[0338] 146b second strut

[0339] 148 double arrow

[0340] 150 double arrow

[0341] 152 double arrow

[0342] 154 floor cleaning machine (second embodiment)

[0343] 156 intermediate web

[0344] 158 fifth swivel bearing

[0345] 160 switch

[0346] 162 first position

[0347] 164 stop

[0348] 166 acute angle

[0349] 168 obtuse angle

[0350] 170 double arrow

[0351] 172 second position

[0352] 174 double arrow

[0353] 176 obtuse angle

[0354] 178 acute angle

[0355] 180 area of action

[0356] 182 floor cleaning machine (third embodiment)

[0357] 184 load section

[0358] 186 floor cleaning machine (fourth embodiment)

[0359] 188 traction mechanism transmission

[0360] 190 second deflection element

[0361] 192 load section

[0362] 194 unloaded section

[0363] 196 traction device

Claims

1. A floor cleaning machine, the floor cleaning machine comprising a base (12), a rocker arm (40) arranged on a first swing bearing (42) on the base (12) in a manner oscillating about a first swing axis (44), a sweeping roller (64) arranged on a rotating bearing (66) on the rocker arm (40) in a manner rotatable about a rotation axis (68), a motor device (72) for rotatingly driving the sweeping roller (64), and a traction mechanism transmission device (84; 84'; 84"; 188) having traction devices (86; 86"; 196), the traction devices being used to transmit torque from the motor device to the sweeping roller, wherein, The traction device (86; 86"; 196) has a load section (88; 192), characterized in that a rod (96) is arranged on the base (12) on a second swing bearing (98) in a manner oscillating about a second swing axis (100), the rod (96) being hinged to the rocker arm (40), and a deflection element (106) for the traction device (86; 86"; 196) is arranged on the rod (96), wherein the traction device (86; 86"; 196) is guided on the deflection element (106) in the load section (88; 192). The rod (96) has a first tab (108) hinged to the base (12) via a second swing bearing (98), and the rod has a second tab (110; 110') connected to the first tab (108) via a fourth swing bearing (112) in a manner that allows it to swing about a fourth swing axis (114), and the second tab is oriented laterally to the first tab (108).

2. The floor cleaning machine according to claim 1, characterized in that, The rod (96) is hinged to the rocker arm (40) via a third oscillating bearing (102; 102'; 102") in a manner that allows it to oscillate about a third oscillating axis (104).

3. The floor cleaning machine according to claim 1 or 2, characterized in that... It has at least one of the following characteristics: - The rotation axis (68) and the first swing axis (44) are oriented parallel to each other; - The rotation axis (68) and the second swing axis (100) are oriented parallel to each other; - The first swing axis (44) and the second swing axis (100) are oriented parallel to each other; - The rotation axis (68) and / or the first swing axis (44) and / or the second swing axis (100) are transverse to the forward direction (22) of the floor cleaning machine; - The rotation axis (68) and / or the first swing axis (44) and / or the second swing axis (100) are parallel to the wheel axis (32) of the floor cleaning machine; - The rotation axis (68) and / or the first swing axis (44) and / or the second swing axis (100) are transverse to the height direction (52) of the base (12), wherein the positioning of the cleaning roller (64) in the height direction (52) can be adjusted by the swing positioning of the rocker arm (40) on the first swing bearing (42).

4. The floor cleaning machine according to claim 2, characterized in that, The third swing axis (104) is oriented parallel to the rotation axis (68) and / or the first swing axis (44) and / or the second swing axis (100).

5. The floor cleaning machine according to any one of claims 1-2, characterized in that, The first oscillating bearing (42) is positioned spaced apart from the rotating bearing (66) relative to the longitudinal direction of the rocker arm (40).

6. The floor cleaning machine according to claim 2, characterized in that, The first oscillating bearing (42) is positioned between the rotating bearing (66) and the third oscillating bearing (102) relative to the longitudinal direction of the rocker arm (40).

7. The floor cleaning machine according to any one of claims 1-2, characterized in that, The rod (96) is arranged and configured such that the swing positioning of the rod about the second swing axis (100) pre-determines the swing positioning of the rocker arm (40) about the first swing axis (44).

8. The floor cleaning machine according to any one of claims 1-2, characterized in that, The rod (96) is arranged and configured such that during the cleaning operation of the sweeping roller (64) acting on the ground (23) to be cleaned, the rod (96) is moved via the traction device (86; 86"); The combined force in the load section (88; 192) of the 196) is used to adjust the swing positioning of the rod (96) on the second swing bearing (98), wherein the combined force in the load section (88; 192) is determined by the torque of the sweeping roller (64) on the ground (23) to be cleaned.

9. The floor cleaning machine according to any one of claims 1-2, characterized in that... It has a positioning device for positioning the sweeping roller (64) on the ground (23) to be cleaned via the rocker arm (40), wherein the positioning includes automatic adjustment via the rod (96).

10. The floor cleaning machine according to claim 1, characterized in that, The second connector (110; 110') is connected to the first connector (108) in a manner resistant to relative translation, or is connected to the first connector (108) in a manner resistant to relative translation, which is equivalent to a translational positioning adjustment on the first connector (108).

11. The floor cleaning machine according to claim 10, characterized in that... It has at least two separate translational positioning, in which the second tab (110; 110') can be fixed to the first tab (108) in a manner that resists relative translation.

12. The floor cleaning machine according to claim 1, 10, or 11, characterized in that, The second contact plate (110; 110') is coupled to the rocker arm (40).

13. The floor cleaning machine according to claim 12, characterized in that, The second tab (110) is directly hinged to the rocker arm (40) in a swingable manner.

14. The floor cleaning machine according to claim 12, characterized in that, The second connecting piece (110') is hinged to the middle connecting piece (156) in a swingable manner, and the middle connecting piece (156) is hinged to the rocker arm (40) in a swingable manner.

15. The floor cleaning machine according to claim 14, characterized in that, The length of the intermediate connecting piece (156) between its hinged position with the second connecting piece (110') and its hinged position with the rocker arm (40) is less than the length of the second connecting piece (110') between its hinged position with the first connecting piece (108) and its hinged position with the intermediate connecting piece (156).

16. The floor cleaning machine according to claim 14 or 15, characterized in that... It has at least one of the following characteristics: - A mechanical switch (160) is formed by means of the intermediate connecting piece (156), which prevents the rod (96) from swinging around the second swing axis (100); - The switch (160) has at least one first position (162) in which the swingability of the lever (96) about the second swing axis (100) is prevented; - In at least one first position (162) of the switch (160), the rocker arm (40) is able to swing freely about the first swing axis (44); - In the at least one first position (162), the second tab (110') is oriented at an acute angle (166) to the first tab (108); - In the at least one first position (162), the intermediate connecting piece (156) is oriented at an obtuse angle (168) to the second connecting piece (110'); - The switch has at least one second position (172) in which the lever (96) is able to swing about the second swing axis (100); - In the at least one second position (172), the second tab (110') is oriented at an obtuse angle (176) to the first tab (108); - In the at least one second position (172), the intermediate connecting piece is oriented at an acute angle (178) to the second connecting piece (110'); - The second connecting piece (110') and the middle connecting piece (156) form a curved rod; - The intermediate connecting piece (156) has a working area (180) for the operator.

17. The floor cleaning machine according to claim 1, 10, or 11, characterized in that, The deflection element (106) is mounted on the first contact plate (108).

18. The floor cleaning machine according to any one of claims 1-2, characterized in that, A switch (160) is provided to the traction mechanism transmission device (84'; 84"; 188), by means of which the swing motion of the rod (96) about the second swing axis (100) is prevented.

19. The floor cleaning machine according to claim 18, characterized in that, When the swingability of the rod (96) is prevented by the switch (160), the rocker arm (40) is supported on the base (12) in a swinging manner.

20. The floor cleaning machine according to claim 18, characterized in that... It has at least one of the following characteristics: - The switch (160) is configured as a swing switch; - The switch (160) has a dead point or dead point region, wherein the swing motion of the rod (96) about the second swing axis (100) is prevented in the dead point or dead point region; - The switch (160) can be pressed by the operator to be in its swinging motion, and can be pulled to be in its swinging motion.

21. The floor cleaning machine according to any one of claims 1-2, characterized in that, The rocker arm (40) includes a first arm (46) and a spaced-apart second arm (48), wherein the cleaning roller (64) is rotatably supported on the first arm (46) and the second arm (48) via the rotary bearing (66).

22. The floor cleaning machine according to claim 21, characterized in that, A connecting rod (50) is connected to the first arm (46) and the second arm (48), and the connecting rod (50) is supported on the base (12) to form the first swing bearing (42).

23. The floor cleaning machine according to claim 22, characterized in that, The connecting rod (50) is arranged in the area of ​​the front end (16) of the base (12) relative to the forward direction (22) of the ground cleaning machine.

24. The floor cleaning machine according to any one of claims 1-2, characterized in that, The traction mechanism transmission device (84; 84'; 188) is configured on one side relative to the sweeping roller (64).

25. The floor cleaning machine according to any one of claims 1-2, characterized in that, The traction mechanism transmission device (84; 84'; 188) includes a traction device tensioner (120; 190), which is associated with the unloaded section (90; 194) of the traction device (86; 86"; 196).

26. The floor cleaning machine according to any one of claims 1-2, characterized in that, The traction mechanism transmission device (84; 84'; 188) includes a drive element of the motor device (72), a deflection element (106) on the rod (96) and a driven element for the sweeping roller (64), and includes the traction device (86; 86"; 196), wherein the traction device (86, 86"; 196) is closed.

27. The floor cleaning machine according to claim 26, characterized in that, The traction mechanism transmission device (84; 84'; 188) includes a second deflection element (106; 190) arranged on the rocker arm (40).

28. The floor cleaning machine according to claim 27, characterized in that, The second deflection element (106; 190) is arranged on the first oscillating bearing (42).

29. The floor cleaning machine according to claim 27 or 28, characterized in that, The second deflection element (190) has a first track for the load section (192) of the traction device (196) and a second track for the unloaded section (194) of the traction device (196).

30. The floor cleaning machine according to any one of claims 1-2, characterized in that, The traction device (196) is a belt or chain.

31. The floor cleaning machine according to any one of claims 1-2, characterized in that... It has a rechargeable battery device (124) for providing electrical energy to the motor unit (72) and other energy-consuming components of the floor cleaning machine.

32. The floor cleaning machine according to claim 31, characterized in that, A first receiving portion for a first battery of the battery device (124) is arranged on the base (12), and a second receiving portion for a second battery is arranged on the base (12) separately from the first receiving portion, wherein the first battery positioned on the first receiving portion is functional in terms of outputting electrical energy to the motor device (72), while the battery positioned on the second receiving portion is a replacement battery.

33. The floor cleaning machine according to any one of claims 1-2, characterized in that... It has at least one of the following characteristics: - The floor cleaning machine is configured as a sweeper for fabric floors; -The cleaning roller is equipped with a suction unit (134); - A wheel device (24) for the ground cleaning machine to move is arranged on the base (12); - During operation, the floor cleaning machine is supported on the floor (23) to be cleaned by the wheel device (24); - The cleaning roller (64) is positioned on the base (12) between the front end (16) of the base (12) and the rear wheel assembly (26); - The floor cleaning machine is configured as a push-back machine or a ride-on machine; - A support (142) is provided for the operator on the base (12).

34. The floor cleaning machine according to any one of claims 1-2, characterized in that... It has a waste collection container (128) to which waste can be conveyed from the cleaning roller (64).

35. The floor cleaning machine according to claim 1 or 2, characterized in that, The rotation axis (68) and / or the first swing axis (44) and / or the second swing axis (100) are perpendicular to the forward direction (22) of the floor cleaning machine.

36. The floor cleaning machine according to claim 1 or 2, characterized in that, The rotation axis (68) and / or the first swing axis (44) and / or the second swing axis (100) are perpendicular to the height direction (52) of the base (12), wherein the positioning of the cleaning roller (64) in the height direction (52) can be adjusted by the swing positioning of the rocker arm (40) on the first swing bearing (42).

37. The floor cleaning machine according to any one of claims 1-2, characterized in that, The rod (96) is arranged and configured such that the swing positioning of the rod about the second swing axis (100) predetermines the swing positioning of the rocker arm (40) about the first swing axis (44), and predetermines at least one of the following features: - The cleaning roller (64) is positioned relative to the height of the base (12); - The contact pressure of the sweeping roller (64) on the surface (23) to be cleaned; - The width of the sweeping roller (64) acting on the ground (23) to be cleaned.

38. The floor cleaning machine according to claim 12, characterized in that, The second contact piece (110) is connected to the rocker arm (40) in a swingable manner via a third swing bearing (102) having a third swing axis (104).

39. The floor cleaning machine according to claim 14, characterized in that, The intermediate connecting piece (156) is coupled to the rocker arm (40) via a third oscillating bearing (102') in a manner that allows it to oscillate about a third oscillating axis (104), and the second connecting piece (110') is hinged to the intermediate connecting piece (156) via a fifth oscillating bearing (158) in a manner that allows it to oscillate about a fifth oscillating axis.

40. The floor cleaning machine according to claim 14 or 15, characterized in that, The intermediate connecting piece (156) has at least one first position (162) in which the swingability of the rod (96) about the second swing axis (100) is prevented.

41. The floor cleaning machine according to claim 14 or 15, characterized in that, In at least one first position (162) of the intermediate connecting piece (156), the rocker arm (40) is able to swing freely about the first swing axis (44).

42. The floor cleaning machine according to claim 14 or 15, characterized in that, The intermediate connecting piece (156) has at least one second position (172) in which the rod (96) is able to swing about the second swing axis (100).

43. The floor cleaning machine according to claim 14 or 15, characterized in that, A mechanical switch (160) is formed by means of the intermediate connecting piece (156), which prevents the rod (96) from swinging around the second swing axis (100). The second contact piece (110') and the intermediate contact piece (156) form a crank, wherein at least one first position (162) of the switch (160) is a dead position of the crank.

44. The floor cleaning machine according to claim 14 or 15, characterized in that, The second connecting piece (110') and the intermediate connecting piece (156) form a crank, wherein at least one first position (162) of the intermediate connecting piece (156) is a dead position of the crank.

45. The floor cleaning machine according to claim 14 or 15, characterized in that, The intermediate connecting piece (156) has an operating area (180) for the operator, the operating area being configured to allow the intermediate connecting piece (156) to be pressed and / or pulled by the operator.

46. ​​The floor cleaning machine according to claim 18, characterized in that, The switch is a mechanical switch.

47. The floor cleaning machine according to claim 27, characterized in that, The second deflection element (106; 190) is arranged on the first oscillating bearing (42) and is positioned coaxially with the first oscillating bearing (42).

48. The floor cleaning machine according to claim 33, characterized in that, The support (142) is designed for a standing operator.

49. The floor cleaning machine according to any one of claims 1-2, characterized in that... It has a waste collection container (128) to which waste can be conveyed from the sweeping roller (64), and the waste collection container has at least one of the following features: - Waste transport is supported by the suction flow of the suction unit (134); - A throwing section is provided to guide the waste from the cleaning roller (64) to the waste collection container (128); -The waste collection container (128) is arranged in a removable manner at the base (12); - The waste collection container (128) is positioned on the rear side of the base (12).

50. A method for operating a floor cleaning machine according to any one of the preceding claims, wherein, The sweeping roller (64) is mechanically adjusted to act on the floor (23) to be cleaned, wherein the swing position of the rod (96) on the second swing bearing (98) is predetermined by inputting force to the load section (88; 188) of the traction device (196), and the swing position of the rod (96) on the second swing bearing (98) predetermines the position of the rocker arm (40) on the first swing bearing (42). The rod (96) has a first tab (108) that is hinged to the base (12) of the floor cleaner via a second swing bearing (98), and the rod has a second tab (110; 110') that is connected to the first tab (108) via a fourth swing bearing (112) in a manner that allows it to swing about a fourth swing axis (114), and the second tab is oriented laterally to the first tab (108).

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