EP3415067A1 - Side brush assembly for a floor cleaning machine - Google Patents

Abstract

Shown and described is a side brush assembly for a floor cleaning machine, comprising a frame member, which is intended for attachment to the machine frame of a floor cleaning machine, wherein the frame member extends along a pivot plane A, which can be aligned perpendicular to a bottom surface to be cleaned, with a side brush, the is rotationally driven to rotate about a rotation axis C, wherein the rotation axis C is oriented so that when the side brush assembly is attached to a floor cleaning machine, extending from the bottom surface to be cleaned upwards, with a side support on which the side brush rotatably is held, wherein the side support is supported on the frame member such that it can perform a movement in the pivoting plane A.

Description

The present invention relates to a side brush assembly for a floor cleaning machine and a floor cleaning machine with such a side brush assembly.

Floor cleaning machines known from the prior art, such as scrubber driers, have a cleaning device with rotating brushes, such as roller brushes, for engagement with a floor surface to be cleaned, the cleaning device being arranged between a front axle arrangement and a rear axle arrangement of the cleaning machine. It is desirable that the spacing of the axle assemblies is as small as possible so that the machine can be maneuvered well, but so that the space between the axle assemblies is limited.

However, in such machines, it is necessary to provide a side brush assembly which will return debris from such areas in front of the cleaning device that are not immediately gripped by the cleaning device, as this debris will otherwise end up in and contaminate a suction foot mounted on the rear of the machine , Here, the side brushes should be adjustable transversely to the direction of travel and in particular they should be able to avoid obstacles sideways to the center of the machine.

For this purpose, it is known from the prior art to support the side brushes on arms pivotable about vertical axis, which in turn are pivotally supported on the machine frame of the machine. However, such an arrangement takes up too much space in the machine's longitudinal direction due to the length of the arms to be mounted between the axle assemblies of a floor cleaning machine.

Therefore, it is the object of the present invention to provide a side brush assembly whose size is reduced parallel to the direction of travel of a floor cleaning machine.

This object is achieved by a side brush assembly according to claim 1. The side brush assembly according to the invention has a frame element which is provided for attachment to the machine frame of a floor cleaning machine, wherein the frame element extends along a pivot plane A, which can be aligned perpendicular to a bottom surface to be cleaned. In particular, the frame element can be mounted on the machine frame of a floor cleaning machine such that the pivot plane extends perpendicular to the floor surface to be cleaned and transversely to the direction of travel of the floor cleaning machine.

Further, the side brush assembly includes a side brush driven for rotation about a rotation axis, the rotation axis being oriented to extend upward from the floor surface to be cleaned when the side brush assembly is attached to the floor cleaning machine. In addition, the side brush assembly on a side support on which the side brush is rotatably supported. The lateral support is mounted on the frame element in such a way that the lateral support can execute a movement in or parallel to the pivoting plane.

In contrast to a side brush assembly according to the prior art, pivot in the pivot arms about vertical axes, which is associated with a space requirement in the longitudinal direction of the machine according to the length of the arms, this space requirement is significantly reduced in the side brush assembly according to the invention characterized by the side support a Movement in or parallel to the pivot plane A can perform. Thus, the above-mentioned swing arm can be dispensed with, and the distance between the front wheel assembly and the cleaning device of the floor cleaning machine can be shorter.

Preferably, the side brush assembly according to the invention is arranged on a floor cleaning machine between a cleaning device and a front wheel assembly. Advantageously, the side brush can be reversibly displaced by means of the Seitenbesenträgers both in the direction of the floor surface to be cleaned as well as transversely to the direction of travel of the floor cleaning machine.

In addition, on the frame member, a first and a second side braces be provided, wherein on each of the side braces a side brush is rotationally driven and mounted and the side braces in the pivot plane in the opposite direction away from each other and can be moved towards each other, so that on both sides of Floor cleaning machine side brushes are provided which promote dirt towards the center in the area of the cleaning device.

In a preferred embodiment, the lateral support is pivotally supported about a pivot axis extending perpendicular to the pivot plane. By this configuration, in addition to the mobility parallel to the floor surface to be cleaned even those towards and away from this surface can be easily realized to compensate for wear on the side brush.

In a further preferred embodiment, the side brush assembly includes first and second link arms each having first and second ends and extending in the pivot plane, the first ends of the first and second link arms being spaced apart from each other about first pivot axes Frame member are connected, wherein the second ends of the first and second link arm spaced from each other about second pivot axes are pivotally connected to the side brush and wherein the first and the second pivot axes perpendicular to the pivot plane. This embodiment offers the advantage that the lateral support is guided in a simple manner during its movement in the pivoting plane. In addition, the side brush combined by means of Seitenbesenträgers be displaced both in the direction of the floor surface to be cleaned as well as transversely to the direction of travel of the floor cleaning machine.

More preferably, the first pivot axes about which the first ends of the first link arm and the second link arm are pivotally connected to the frame member have a first distance from each other and the second pivot axes about which the second ends of the first link arm and the second link arm pivotally the side braces have a second distance from each other, which is equal to the first distance. Further, the first and second pivotal axes about which the first link arm is pivotally connected pivotally to the frame member and the side stay member have a third distance, and the first and second pivot axes pivot about the second link arm pivotally with the frame member and the side stay is connected, have a fourth distance, wherein the third distance is equal to the fourth distance. In this embodiment, the frame member, the connecting arms and the side-braces form a parallelogram arrangement, and the angle which the side-leg support encloses with the floor surface to be cleaned does not change upon movement of the side brace in the pivoting plane. This has the advantage that the orientation of the axis of rotation of the side brushes remains unchanged relative to the floor surface to be cleaned.

In a further preferred embodiment of the side broom arrangement, a pull cable is provided, the first end of which is coupled to the side support and whose second end is coupled to an output element of a drive device, wherein the output element is movable between a first and a second end position. For coupling with the lateral support, the first end of the pull rope can be fitted with one of the Connecting arms be connected, in particular with the second connecting arm. In this embodiment, a simple operation of the Seitenbesenträgers.

In a further preferred manner, the drive device has a Aushebearm which is pivotally mounted on the frame member. In this case, the second end of the traction cable is spaced from the pivot axis about which the Aushebearm is pivotally mounted on the frame member attached to the Aushebearm, and the drive means comprises a drive which is coupled to the Aushebearm and constructed to the Aushebearm between the first end position and to pivot the second end position on the frame member. The side brush arrangement preferably has a deflection roller for guiding the tension cable, wherein the deflection roller is rotatably supported on the frame element.

Particularly preferably, the drive is designed as a linear drive with a housing and a relative to the housing along a movement axis movable motor output element. The Aushebearm is spaced from the pivot axis about which it is pivotally connected to the frame member, connected to one of the housing and the output member, and the frame member is connected to the other from the housing and the output member. In this embodiment, the operation of the Seitenbesenträgers is particularly easy realized.

According to a preferred embodiment of the side brush assembly, the movement of the Seitenbesenträgers in the pivoting plane away from the frame member by a stopper, hereinafter also called stopper, limited, whose position is adjustable. This development has the advantage that an uncontrolled movement of the Seitenbesenträgers, in particular a vertical movement in the direction of the floor surface to be cleaned, is prevented.

Further preferably, a lug extending to the second connecting arm is provided on the first connecting arm with a contact surface extending transversely to the second connecting arm, and a stop element adjustable along the second connecting arm is provided on the second connecting arm, the stop face pointing to the contact surface having. The stop element may have an internal thread. Preferably, the second connecting arm has a recess in which the stop element is guided.

Particularly preferably, the stop element is non-rotatably and slidably supported along the longitudinal axis of the second connecting arm thereto, and it is a A threaded spindle is provided which extends along the longitudinal axis of the second connecting arm and is rotatably and immovably supported thereon, wherein the stop element is in threaded engagement with the threaded spindle. At one end of the threaded spindle, an adjusting element for rotating the threaded spindle may be arranged, in particular for displacing the stop element. This embodiment has the advantage that the position up to which the side support can move away from the center of the frame element to the outside and thus also towards the floor surface to be cleaned, can be set reliably and easily.

In a particularly preferred embodiment of the stop or the stop device, the second connecting arm has a recess, the threaded spindle is rotatably supported by the second connecting arm and guided by the stop element with internal thread. At the first end of the threaded spindle, the adjusting element for rotating the threaded spindle is arranged. The stop element is guided in the recess of the second connecting arm. The tab of the first link arm extends toward the second link arm to project between the stop member and a second end of the lead screw opposite the first end. A spring may be disposed between the first end of the threaded spindle and the stop element about the threaded spindle and may act on the stop element in the direction of the opposite second end of the threaded spindle.

In this development of the stop or the stop device, the tab of the first connecting arm moves away from the second end of the threaded spindle and moves in the direction of the stop element when the side brush assembly is reversibly transferred to its working state. When the tab finally abuts or abuts against the stop element, further displacement of the side brush in the direction of the floor surface to be cleaned is prevented.

In this development of the stop or the stop device can be displaced within the recess in the direction of the first or second end of the threaded spindle by reversibly rotating the threaded spindle or the adjusting element, the stop element.

In a floor cleaning machine according to the invention, a front wheel assembly and a rear wheel assembly are provided, a cleaning means is for engagement with a floor surface to be cleaned between the front wheel assembly and the rear wheel assembly arranged and a previously described side brush assembly is provided between the cleaning device and the front wheel assembly.

Fig. 1

eine Bodenreinigungsmaschine mit einem Ausführungsbeispiel einer erfindungsgemäßen Seitenbesenanordnung mit zwei Seitenbesenträgern zeigt,

Fig. 2

die Seitenbesenanordnung aus Fig. 1 zeigt, wobei die Seitenbesen mit verschlissenen Borsten auf die zu reinigende Bodenfläche abgesenkt sind,

Fig. 3

die in Fig. 1 und 2 gezeigte Seitenbesenanordnung zeigt, wobei nicht-verschlissene Seitenbesen von der zu reinigenden Bodenfläche ausgehoben sind,

Fig. 4

die Seitenbesenanordnung aus Fig. 3 zeigt, wobei die nicht-verschlissenen Seitenbesen auf die zu reinigende Bodenfläche abgesenkt sind,

Fig. 5

einen Teil der Seitenbesenanordnung aus den Fig. 2 bis 4 zeigt, wobei die Seitenbesen auf die zu reinigende Bodenfläche abgesenkt sind, und

Fig. 6

einen Teil der Seitenbesenanordnung aus den Fig. 2 bis 4 zeigt, wobei die Seitenbesen von der zu reinigenden Bodenfläche ausgehoben sind,

The present invention will be described below with reference to a drawing showing only a preferred embodiment, wherein

Fig. 1

shows a floor cleaning machine with an embodiment of a side brush assembly according to the invention with two side braces,

Fig. 2

the side brush assembly Fig. 1 shows, with the side brushes are worn with worn bristles on the floor surface to be cleaned,

Fig. 3

in the Fig. 1 and 2 shown side brush assembly, wherein non-worn side brushes are dug from the floor surface to be cleaned,

Fig. 4

the side brush assembly Fig. 3 shows, wherein the non-worn side brushes are lowered to the floor surface to be cleaned,

Fig. 5

a part of the side brush assembly of the Fig. 2 to 4 shows, with the side brushes are lowered to the floor surface to be cleaned, and

Fig. 6

a part of the side brush assembly of the Fig. 2 to 4 shows, wherein the side brushes are dug from the floor surface to be cleaned,

Fig. 1 shows an embodiment of a floor cleaning machine 1 according to the invention, which can be moved over a bottom surface 2 to be cleaned and which is provided with an embodiment of a side brush assembly 3 according to the invention. Their side brushes 5, 5a extend laterally beyond the machine frame of the floor cleaning machine 1 in the direction of travel. The side brush assembly 3 is arranged between a front wheel assembly 7 and a cleaning device 9, and the cleaning device 9 is in turn mounted in the direction of travel in front of the rear wheel assembly 11. Furthermore, the cleaning device 9, not shown, driven brush elements that can engage with the bottom surface 2 to be cleaned, and with the cleaning device 9 cleaning liquid can be applied to the bottom surface 2, which in turn can be sucked by a provided at the rear of the floor cleaning machine 1 suction 12 ,

The Fig. 2 to 6 show the side brush assembly 3 from Fig. 1 in a view transverse to the direction of travel of the floor cleaning device 1, wherein the side brush assembly 3 in this embodiment, two side brush, 5, 5a, which on two Seitenbesenträgern 13, 13 a mounted and driven in rotation by unspecified rotary actuators. In addition, a common drive means 15 is provided for moving the side braces. In Fig. 2 the side brushes 5, 5a, which already have worn bristles here, are shown in a position in which they are lowered onto the floor surface 2 to be cleaned.

The side brush assembly 3 comprises a frame member 19 which is mounted on the machine frame of a floor cleaning machine 1, wherein the frame member 19 along a pivot plane A (equal to the sheet plane of the Fig. 2 ), which is aligned here perpendicular to the floor surface 2 to be cleaned. Next, the side brush assembly 3 has two side brushes 5, 5a, which are rotatably driven for rotation about each axis of rotation C by means not described in detail as electric motors trained rotary actuators, wherein the axes of rotation C is oriented such that it, when the side brush assembly 3 at a Floor cleaning machine 1 is mounted to extend away from the floor surface 2 to be cleaned. The rotary actuators can also be designed as hydraulic drives.

In addition, the side brush assembly 3 has a first lateral support 13 and a second lateral support 13a, on each of which one of the side brushes 5, 5a is rotatably supported. The side braces 13, 13a are mounted on the frame member 19 so that they can each perform a movement in the pivoting plane A.

For holding the first Seitenbesenträgers 13, a first connecting arm 21 and a second connecting arm 23 are provided which extend in the pivoting plane A. The connecting arms 21, 23 each have a first end, which are pivotally connected to the frame member 19 about spaced-apart first pivot axes 25, 27. Second ends of the connecting arms 21, 23 are pivotally connected to the first side support 13 around pivotally spaced second pivot shafts 29, 31.

The first and second pivot axes 25, 27; 29, 31 are perpendicular to the pivot plane A. The distance between the first pivot axes 25, 27 is equal to the distance between the second pivot axes 29, 31. In addition, the distance between the pivot axes 25, 29 to which the first connecting arm 21 pivotally connected to the Frame member 19 and the first side support member 13 is connected, equal to the distance between the pivot axes 27, 31, by which the second connecting arm 23 is pivotally connected to the frame member 19 and the first side support 13.

Thus, the frame member 19, the first connecting arm 21, the second connecting arm 23 and the first side brush holder 13 form a parallelogram arrangement. This has the advantage that the first lateral support 13 is guided during its movement in the pivoting plane A or parallel to it so that is displaced both in the direction of the floor surface 2 to be cleaned as well as transversely to the direction of the floor cleaning machine 1 and its orientation in space maintains. In particular, the inclination of the rotation axis C during displacement of the first Seitenbesenträgers 13 does not change.

As in particular from Fig. 5 Also, the second side support 13a is pivotally connected to the frame member 19 via a first connecting arm 21a and a second connecting arm 23a, the first pivot axes 25a, 27a pivotally connecting the first and second connecting arms 21a, 23a to the frame member 19 are the same first distance from each other as the second pivot axes 29a, 31a, around which the first and the second link arm 21a, 23a are connected to the second side member carrier 13a. In addition, the first pivot axis 25a and the second pivot axis 29a, around which the first link arm 21a is pivotally connected to the frame member 19 and the second side member support 13a, have the same second distance as the first and second pivot axes 27a, 31a about which the second pivot axis Connecting arm 23a pivotally connected to the frame member 19 and the second side support 13a. These first and second distances in the mounting of the second Seitenbesenträgers 13a are equal to the already mentioned first and second distances in the holder of the first Seitenbesenträgers 13th

Thus, the holder of the second Seitenbesenträgers 13a is very similar to that of the first Seitenbesenträgers 13 constructed as a parallelogram arrangement, in this embodiment, the relevant dimensions in the holder of the first and the second Seitenbesenträgers 13, 13a are the same.

The drive device 15 has a first pull cable 33 and a second pull cable 33a. The first end of the first pull cable 33 is connected to the second link arm 23 for the first side-leg support 13, ie coupled to the first side-leg support 13, and the second end of the first pull-rope 33 is coupled to an output element 35 of the drive device 15. A deflection roller 37 is rotatably supported by the frame member 19 and the first pull cable 33 is guided by means of the deflection roller 37. The drive device 15 has a Aushebearm 39 which is pivotally mounted on the frame member 19. The second end of the first pull cable 33 is from the pivot axis to which the Lifting arm 39 is pivotally mounted on the frame member 19, spaced on the Aushebearm 39 attached.

In addition, a second pull cable 33a is provided, the first end of which is connected to the second link arm 23a, with which the second side rack 13a is supported, so that the first end of the second pull cable 33a is coupled to the second side rack 13a. The second end of the second traction cable 33a is spaced on the Aushebearm 39 from the pivot axis about which it is pivotally mounted on the frame member 19, and mounted on the side of this pivot axis, which is opposite to the side at which the second end of the first traction cable 33rd is attached.

The drive device 15 further has a drive in the form of a linear drive 41, which is coupled to the Aushebearm 39 and constructed to pivot the Aushebearm 39 between a first end position and a second end position relative to the frame member 19. The linear drive 41 comprises a housing 42 and an output member 35 movable in motor relative to the housing 42 along a movement axis, and the lifting arm 39 is spacedly connected to the output member 35 from the pivot axis about which it is pivotally connected to the frame member 19 the housing 42 is hinged to the frame member 19.

By pivoting the Aushebearms 39 between the first end position, as shown in Fig. 3 is shown, and the second end position, in Fig. 4 is shown, the linear drive 41, the side brush assembly 3 reversibly from a resting state in which the side brushes 5, 5a withdrawn or lifted from the floor surface to be cleaned 2, in a working state, in which the side brushes 5, 5a on the cleaned Floor surface 2 rest. The movement of the lateral support 13, 13a takes place exclusively in the pivoting plane A, and the angle which the lateral support 13, 13a include with the bottom surface 2 to be cleaned, remains the same during the movement, so that the orientation of the axes of rotation C of the side brush 5, 5a remains unchanged.

The movement of the first and second Seitenbesenträgers 13, 13a in the pivoting plane A away from the frame member 19 is limited by stop devices whose position is adjustable. Details of the stop or the stop device are described below with reference to the Figures 5 and 6 explained.

In Fig. 5 the second side brush 5a, not shown there, is lowered towards the bottom surface 2 to be cleaned, and the lifting arm 39 is correspondingly in the second end position, which is also in FIG Fig. 4 is shown.

The adjustable stop means serves to limit the movement of the side brace 13a in the pivoting plane A away from the frame member 19. On the first connecting arm 21a for the second side brace 13a is a tab 43a extending toward the second connecting arm 23a, transverse to the second one Connecting arm 23 a extending contact surface arranged. On the second connecting arm 23a, a stop element 45a, which is adjustable along the second connecting arm 23a, is provided which has a stop surface facing the contact surface. The stop member 45a is non-rotatably and slidably supported along the longitudinal axis of the second link arm 23a thereon. A threaded spindle 47a extends along the longitudinal axis of the second link arm 23a, is rotatably and immovably supported on the second link arm 23a, and engages an internal thread in the stopper member 45a.

The second connecting arm 23a has a recess 49a in the exemplary embodiment described here, and the stop element 45a is guided in the recess of the second connecting arm 23a. At a first end of the threaded spindle 47a, an actuator 51a for rotating the threaded spindle 47a is attached. The tab 43a on the first link arm 21a extends toward the second link arm 23a so as to project between the stopper member 45a and a second end 53a of the screw shaft opposite the first end. A spring 55 is disposed between the first end of the lead screw 47a and the stopper member 45a around the lead screw 47a, and can bias the stopper member 45a toward the second end of the lead screw 47a.

By turning the threaded spindle 47a or the adjusting element 51a, the stop element 45a can be displaced within the recess 49a in the direction of the first or second end of the threaded spindle 47a.

When the Aushebearm 39 is displaced by the linear drive 41 from the first end position to the second end position, pivot the connecting arms 21 a, 23 a of the in Fig. 6 shown position to the in Fig. 5 and the tab 43a moves toward and abuts against the abutment member 45a, which defines the position up to which the second side member support 13a approaches the bottom surface 2 to be cleaned and away from the center of the frame member 19 can move. This position is set by adjusting the position of the stopper member 45a along the second link arm 23a by turning the actuator 51a. When the Aushebearm 39 has reached the second end position, the second pull cable 33a depends on, since the tab 43a has come even before reaching the second end position to rest with the stop element 45a. When the second side-member support 13a of the side brush 5a encounters an obstacle while the floor-cleaning machine 1 is moving, the second side-support 13a can move freely inwards towards the one in FIG Fig. 3 and 6 Swing the position shown and avoid the obstacle. When the machine 1 has moved past the obstacle, the second side-member carrier 13a pivots back into the in-plane due to gravity Fig. 4 and 5 shown position.

When the Aushebearm 39 back to the first end position ( Fig. 3 ), the second connecting arms 23, 23a are pulled by the pulling cables 33, 33a towards the frame element 19 and the lateral support elements 13, 13a and thus also the side brushes 5, 5a are moved away from the floor surface 2 to be cleaned.

Previously, the stopper assembly for the second side support 13a has been explained. However, the stop assembly for the first side support 13 is constructed completely identical.

Finally, by comparing the Fig. 2 and 4 to recognize that the side brushes 5, 5a in Fig. 2 are more worn than the ones in Fig. 4 , the side brushes 5, 5a but in both cases rest on the floor surface 2 to be cleaned. The latter is achieved by a suitable adjustment of the position of the stop elements 45a of the stop devices. In both cases, however, the orientation of the axis of rotation C of the side brushes 5, 5a is the same, so that the sweeping mirror, ie the area with which the side brushes 5, 5a rest on the bottom surface 2, has essentially the same shape and orientation.

As can be seen from the above, is made possible by the inventive side brush assembly to install them in space-saving manner in the area between the front wheel assembly and the cleaning device of a floor cleaning machine, the side brushes still move outward and obstacles can easily avoid. However, the use of the side brush assembly according to the invention is not limited to an arrangement between the axes and immediately before the cleaning device of a floor cleaning machine. Rather, it is also conceivable that the side brush assembly according to the invention is attached to the front of a floor cleaning machine, for example, together with a sweeping attachment.

reference numeral

1

Floor cleaning machine

2

to be cleaned floor area

3

Side brush arrangement

5, 5a

side brush

7

front wheel assembly

9

cleaning device

11

rear wheel assembly

12

suction cup

13, 13a

Side brush carrier

15

driving means

19

frame element

21, 21a

first link arm

23, 23a

second connecting arm

25, 25a

first pivot axis of the first connecting arm

27, 27a

first pivot axis of the second connecting arm

29, 29a

second pivot axis of the first connecting arm

31, 31a

second pivot axis of the second connecting arm

33, 33a

first and second pull rope

35

Output element of the drive device

37, 37a

idler pulley

39

Lifting arm of the drive device

41

Drive of the drive device

42

casing

43, 43a

Tab on the first connecting arm

45, 45a

Stop element of the stop device

47, 47a

Threaded spindle of the stop device

49, 49a

Recess on the second connecting arm

51, 51a

Control element of the stop device

53, 53a

second end of the threaded spindle

55

feather

A

Pivoting plane of the frame element

B

Swivel axis of the Seitenbesenträgers

C

Rotation axis of the side broom

Claims (10)

Side brush assembly (3) for a floor cleaning machine (1), a frame element (19) provided for attachment to the machine frame of a floor cleaning machine (1), the frame element (19) extending along a pivot plane (A) which can be aligned perpendicular to a floor surface (2) to be cleaned, with a side brush (5) which is rotationally driven for rotation about a rotation axis (C), the rotation axis (C) being oriented so that when the side brush assembly (3) is attached to a floor cleaning machine (1) the floor surface (2) to be cleaned extends upwards, with a lateral support (13, 13a) on which the side brush (5, 5a) is rotatably mounted, wherein the lateral support (13, 13a) is mounted on the frame element (19) in such a way that it moves in the pivoting plane (A) can perform. The side brush assembly of claim 1, wherein first and second link arms (21, 21a, 23, 23a) are provided having first and second ends and extending in the pivot plane (A), the first ends of the first and second link arms (21, 21a; 23, 23a) being pivotally connected to the frame member (19) spaced apart from each other about first pivot axes (25, 25a, 27, 27a), the second ends of the first and second link arms (21,21a; 23,23a) being pivotally connected to the side rests (13,13a) about second pivot axes (29,29a; 31,31a) spaced apart from each other, and wherein the first and second pivot axes (25, 25a; 27, 27a; 29, 29a; 31, 31a) are perpendicular to the pivoting plane (A). The side brush assembly according to claim 2, wherein the first pivot axes (25, 25a; 27, 27a) about which the first ends of the first link arm (21, 21a) and the second link arm (23, 23a) are pivotally connected to the frame member (19) to have a first distance from each other, the second pivot axes (29, 29a, 31, 31a) about which the second ends of the first connecting arm (21, 21a) and the second connecting arm (23, 23a) pivotally connected to the lateral support (13, 13a) have a second distance from each other which is equal to the first distance, wherein the first and second pivot axes (25, 25a; 29, 29a) about which the first link arm (21, 21a) is pivotally connected pivotally to the frame member (19) and the side rack (13, 13a) are at a third distance and wherein the first and second pivot axes (27, 27a; 31, 31a) about which the second link arm (23, 23a) is pivotally connected to the frame member (19) and the side rack (13, 13a) are at a fourth distance , which is equal to the third distance. The side broom arrangement according to one of the preceding claims, wherein a pull cable (33, 33a) is provided, the first end of which is coupled to the side support (13, 13a) and whose second end is coupled to an output element (35) of a drive device (15) the output element (35) is movable between a first and a second end position. A side brush assembly according to claim 4, wherein the drive means comprises a lift-out arm (39) pivotally mounted on the frame member (19), the second end of the pull rope (33, 33a) being spaced from the pivot axis about which the lift arm (39) is pivotally mounted on the frame member (19), is attached to the lift arm (39) and wherein the drive means comprises a drive (41) coupled to the lift-out arm (39) and configured to pivot the lift-out arm (39) between the first end position and the second end position on the frame member (19). The side brush arrangement according to claim 5, wherein the drive is designed as a linear drive (41) with a housing (42) and a starting element (35) which is movable in a motor-like manner along a movement axis relative to the housing (42). wherein the Aushebearm (39) spaced from the pivot axis about which it is pivotally connected to the frame member (19) connected to one of the housing (42) and the output member (35) and wherein the frame member (19) is connected to the other of the housing (42) and the output member (35). A side brush assembly according to any one of claims 2 to 6, wherein the movement of the side braces (13, 13a) in the pivot plane (A) away from the frame member (19) is limited by a stop whose position is adjustable. The side brush assembly according to claim 7, wherein on the first connecting arm (21, 21a) there is provided a lug (43a) extending towards the second connecting arm with a contact surface extending transversely to the second connecting arm (23, 23a),
wherein on the second connecting arm (23, 23 a) along the second connecting arm (23, 23 a) adjustable stop member (45 a) is provided, which has a stop surface facing the contact surface. The side brush assembly of claim 8, wherein the stop member (45a) is non-rotatably and slidably supported along the longitudinal axis of the second link arm (23, 23a) thereon, a threaded spindle (47a) is provided which extends along the longitudinal axis of the second link arm (23, 23a) and is rotatably and immovably supported thereon, and wherein the stop element (45a) is in threaded engagement with the threaded spindle (47a). Floor cleaning machine (1), wherein a front wheel assembly (7) and a rear wheel assembly (11) are provided, a cleaning device (9) being arranged for engagement with a floor surface (2) to be cleaned between the front wheel arrangement (7) and the rear wheel arrangement (11), wherein a side brush assembly (3) according to any one of the preceding claims is provided between the cleaning means (11) and the front wheel assembly (7).

Images