WO2019192953A1

WO2019192953A1 - Brush tool for a cleaning machine, cleaning machine and method for producing a brush tool

Info

Publication number: WO2019192953A1
Application number: PCT/EP2019/058167
Authority: WO
Inventors: Kerstin WERLEIN; Oliver Haug; Michael Rehner
Original assignee: Alfred Kärcher SE & Co. KG
Priority date: 2018-04-03
Filing date: 2019-04-01
Publication date: 2019-10-10
Also published as: EP3773067A1; CN111936012A; DE102018107849A1; CN111936012B

Abstract

The invention relates to a brush tool for a cleaning machine (10), comprising a base body (84) having a first contact region (158), at least one bristle bundle chain (112) having a plurality of chain links (118), wherein at least one bristle bundle (114) is fixed to one chain link (118), and a fixing element (160) having a second contact region (164), wherein the fixing element (160) is fixed to the base body (84) and the at least one bristle bundle chain (112) is fixed between the first contact region (158) and the second contact region (164).

Description

Brush tool for a cleaning machine, cleaning machine and method for producing a brush tool

The invention relates to a brush tool for a cleaning machine.

The invention further relates to a cleaning machine.

Furthermore, the invention relates to a method for producing a brush tool.

DE 199 51 568 A1 discloses a brushed turntable for sweeping machines with a brush-free center and a brush ring extending annularly around the brush-free center.

DE 37 11 181 A1 discloses a disc brush for attachment to a rotating power head of a street sweeper. Bristle tufts are mounted on segment plates, which in turn are bolted to the edge of the plate body.

US 2,923,958 discloses a rotary brush for a street sweeper.

From DE 40 33 458 Al a safety rotary brush for surface treatment is known, in which a flexible brush belt equipped with bristle bodies is designed as a closed brush ring.

From EP 2 939 563 Bl a sweeping device for the arrangement of a mechanically driven sweeping or cleaning machine is known, which has a carrier on which a plurality of receptacles are arranged for each at least one sweeping element. At each receptacle a holder for releasably holding at least one sweeping element is formed. It is provided a central locking element which between a release position and a locking position is movably arranged on the carrier, wherein the central locking element in the locking position with all receptacles, with all the holders or with all arranged in recordings arranged sweeping elements and blocks a release of the sweeping element of the respective holder. The central locking element is rotatably arranged between the release position and the locking position on the carrier and fixed in position by means of a locking element in the locking position on the carrier.

In the non-prepublished PCT / EP2018 / 057793 filed on Mar. 27, 2018, there is described a tool for a weed clearance machine which is rotationally driven in operation and includes a retainer, and a plurality of spaced bristle bundles disposed on the retainer. The bundles of bristles are positioned in a pitch circle on the holder, and the number of bristle bundles on the pitch ring is in the range of eight to twenty-two.

The invention has for its object to provide a brush tool of the type mentioned, which allows a simple way a bristle exchange when worn.

This object is achieved in the brush tool according to the invention in that a base body is provided with a first contact area, at least one bundle of bristle bundles with a plurality of chain links is provided, wherein at least one bundle of bristles is fixed to a chain link is, and a fixing element is provided with a second abutment region, wherein the fixing element is fixed to the base body and the at least one bundle of bristle bundles is clamped between the first abutment region and the second abutment region.

In particular, the brush tool consists only of the two elements base body and fixing element and then the at least one bristle bundle chain. The brush tool can thus be composed in a simple manner from a minimum number of components. This results in a simple production. Furthermore, a bristle exchange can be facilitated easily by replacing a bristle bundle chain. This results in a low material consumption.

Furthermore, there is an optimized adaptability to different applications by using specific bristles.

Furthermore, an exchange of bristle bundles can be carried out in a simple manner when the brush tool is fixed to a tool holder of a cleaning machine. The brush tool and in particular the main body of the brush tool need not be detached from the tool holder.

It is favorable when the at least one bundle of bristle bundles is held on the base body and / or on the fixing element by a positive locking device, wherein in particular positive locking elements on the at least one bristle bundle chain and counter elements on the base body and / or the Fixing element are arranged. This results in a simple manufacturability of the brush tool, wherein the items can be firmly connected to each other.

It is particularly advantageous if the fixing element is releasably connected to the base body. As a result, a bristle exchange can be carried out in a simple manner by releasing the fixing element and then correspondingly removing the at least one bundle of bristle bundles and inserting a new one.

For the same reason, it is favorable if the at least one bundle of bristle bundles is detachably connected to the base body and / or the fixing element. It is advantageous if adjacent chain links of the bristle bundle chain are connected to one another via a web. As a result, a bristle bundle chain can be provided in a simple manner, which basically can comprise any number of chain links. Furthermore, mobility and thereby deformability of the bristle bundle chain can be achieved via the webs. As a result, for example, a bundle of bristle bundles can be made available as an elongated roll product. It results in a simple manner an adaptability for insertion on the body.

It is favorable if the at least one bundle of bristle bundles has a longitudinal extension direction and (at least) has a mobility in a direction transverse to the longitudinal extension direction. As a result, for example, the at least one bundle of bristle bundles can be arranged in a circle and positioned correspondingly on the base body. Furthermore, adaptation to different radii of the basic body is also possible.

In one embodiment, a chain link has at least one foot which extends transversely to the longitudinal direction. About such a foot can cause a positive connection via an axial direction with the base body and / or the fixing element.

It is particularly advantageous if a chain link is mirror-symmetrical. As a result, there is no preferred direction for the assembly of a bristle bundle chain on the base body and a bristle bundle exchange over a bristle bundle chain replacement for an operator is facilitated.

It is favorable if a chain link at least one receptacle for a

Having bristle bundles and in particular exactly one receptacle for a bristle bundle. As a result, a brush tool can be realized in a simple manner, on which bristle bundles can be exchanged, by exchanging the at least one bundle of bristle bundles as a whole. In particular, the bristle bundles are firmly held in the associated receptacle and in particular held so that they can be removed only by destroying the bristle bundle or the receptacle. As a result, the brush tool can be constructed in a simple manner and it is possible in a simple manner to realize an exchange of bristle bundles.

In one embodiment, the bristle bundles are plugged into the associated receptacle or held or glued by an injection molding process.

As a result, the bristle bundle chain can be produced in a simple and cost-effective manner.

For example, forms a single bristle with its two ends bristle tips of a bristle bundle. This results in a simple manufacturability.

It is advantageous if a bundle of bristle bundles is provided as rolled goods. In particular, a bristle bundle chain of the appropriate length can then be provided by cutting off a roll.

In principle, it is possible for a bundle of bristle bundles to be formed endlessly and positioned on the basic body. A cost-effective alternative results if the at least one bundle of bristle bundles has a first end and a second end which are not connected to one another. This makes it possible to produce the at least one bristle bundle chain for the brush tool by cutting it from a larger chain.

In a structurally simple embodiment, a chain link comprises at least one bushing as a receptacle for a bundle of bristles. The bushing can be used to clamp the bundle of bristle bundles between the first abutment region and the second abutment region and to provide corresponding interlocking elements.

In particular, contact surfaces for the first contact region and / or the second contact region are formed on the at least one bushing. It can be thereby realize the brush tool with a minimized number of items.

It is expedient if at least one web is arranged on the bush for connection to an adjacent chain link and / or at least one foot is arranged for positive locking with the base body and / or the fixing element. This results in a relatively simply constructed bundle of bristle bundles, which can be positioned on the base body and can be clamped between the first contact region and the second contact region.

It is particularly advantageous if, at least in regions, the bushing has, with respect to an outer contour, a width which decreases in one direction and which is adapted to an associated receptacle of the base body. It is thus possible to realize a wedge-shaped bush in a simple manner, in which case a positive fit can be realized in a simple manner, in particular in a circumferential direction.

It is expedient if the base body comprises a fixing device for fixing and in particular releasably fixing the brush tool to a tool holder of the cleaning machine. The fixing device is preferably formed on the base body on a plate-shaped element. It can then be an exchange of bristle bundles on exchange of a bundle of bristle bundles realize without the base body must be removed from a tool holder of a cleaning machine.

Advantageously, the fixing device is arranged and designed such that the fixing element and the at least one bundle of bristle bundles are detachable from the base body and can be positioned on the base body when the base body is fixed to the tool holder via the fixing device. This results in a simple operability for an operator with regard to exchange of bristle bundles in the case of bristle wear; no solution of the main body of the cleaning machine is necessary. It is particularly advantageous if the main body has a plurality of receptacles for chain links. It can thus achieve a fixation of the bristle bundle chain in a simple manner. In particular, a positive connection can be achieved by the recordings.

In one embodiment, a receptacle in a circumferential direction on adjacent web elements, between which a chain link is seated in particular with a socket, wherein on the web elements, a chain link is held in a form-fitting manner in order circumferential direction. In the case of the brush tool, it is thus possible to achieve an exact positioning of bristle bundles, which is not changed even during rotation of the brush tool. But it can also realize a simple interchangeability of a bristle bundle chain.

It is preferably provided that a receiving space is formed between adjacent web elements whose width decreases in a radial direction towards an edge wall of the main body. As a result, a corresponding chain link can be held on the receptacle in a type of wedge mount. This results in a stable fixation.

It is favorable if webs of the at least one bundle of bristle bundles, which interconnect adjacent chain links, are positioned in front of the web elements of the main body. This results in a stable fixation with easy interchangeability.

It is advantageous if a receptacle has a recess for a foot element of a chain link, wherein a chain link is held in a form-fitting manner in an axial direction, in particular via a foot element immersed in the recess. As a result, a form-fitting fixation in the circumferential direction as well as in the axial direction can be realized in a simple manner on a receptacle. It is also favorable if a bottom wall, on which a chain link is supported, is arranged at an angle to an axial axis. It can be realized in a simple manner a positive connection in the radial direction.

In one embodiment, the base body has a peripheral edge wall, on which web elements and / or recesses for the positive retention of the at least one bundle of bristle bundles are arranged or formed. The corresponding base body can in particular be produced in one piece. The number of individual parts of the brush tool can be minimized.

It is also advantageous if the base body has a bottom wall, on which protrudes the peripheral edge wall, wherein the bottom wall has a support region for chain links of the at least one bristle bundle chain. It is particularly advantageous if the bottom wall is oriented at an angle to an axial axis of the brush tool and / or the first contact area. This makes it possible to provide a contact surface with respect to a radial direction, in particular to a central region of the main body. This makes it possible to realize an additional positive connection with respect to the radial direction.

In one embodiment, the base body has a recessed area, which is surrounded by the bottom wall. The recessed area can be used, for example, to arrange a fixing device for the fixing element. Furthermore, a fixing device for fixing the brush tool (at least partially) for a tool holder of a cleaning machine can be arranged on a rear side of the recess area. Furthermore, the brush tool can thus be formed with respect to a holder for bristle bundles with a relatively small height.

It is favorable if the first investment area is formed at least partially at the receptacles. This results in a compact design. Advantageously, a fixing device for the fixing element is provided on the base body, wherein a fixed position of the fixing element on the base body can be produced by rotation of the fixing element relative to the base body and is detachable. It can be so easily fix the fixing element with the main body or solve it. This allows an operator to easily replace a bristle bundle chain in the event of bristle wear or a change of use.

In a structurally simple embodiment, the fixing device is designed as a threaded device or bayonet closure device. In this case, in particular, a direction of rotation for fixing in the same direction is oriented as a direction of rotation of the brush tool during operation of the cleaning machine in order to avoid unintentional release.

It is favorable if that part of the fixing device which is arranged on the base body is positioned on a recess area of the base body, which is axially spaced from the at least one bristle bundle chain. This results in a compact construction and the height of a holder of the brush tool, which holds the bristle bundles, can be kept low.

In one embodiment, a plurality of slot elements with respective slots for counter-elements of the fixing element are arranged on the base body. In particular, the slot elements can be formed in one piece on the base body and in particular on a recess area of the base body. This results in a simple fixability or solubility of the fixing element.

In one embodiment, a slot element is associated with a spring element which effects a rotational fixation of the fixing element on the base body. The spring element can engage in a fixing position and cause a corresponding fuse. This fixation position in turn can be solved easily.

It is advantageous if the fixing element has recesses for feet of chain links for positive retention, in particular in an axial direction and possibly also in a circumferential direction. It is thus possible to achieve a form-locking fixation, in particular for the axial axis, between the bristle bundle chain and the fixing element.

Conveniently, the second abutment region is at least partially formed on an outer side of a wall of the fixing element. This outside of the wall forms a contact surface on chain links of the bristle bundle chain.

It can be provided that between the first abutment region and the second abutment region, successive at least two bristle bundle chains are arranged in the radial direction, in particular adjacent bristle bundle chains being supported against one another. It may thus be provided, for example, that bristle bundles are arranged in a plurality of partial circles, wherein the partial circles are, in particular, coaxial with one another. It can be as a brush tool with a relatively high coverage area based on bristle bundles reach. The mutual support of neighboring bristle bundle chains makes it possible to keep the number of individual parts small. Basically, only the main body, the bundles of bristle bundles and the fixing element are needed.

In particular, the brush tool is designed as a rotary brush tool, which rotates during operation of the cleaning machine.

In particular for a weed-release machine in which preferably a combination of attrition and cutting takes place, it is favorable if at least one of the following is present: Bristle bundles are seated on a partial circular ring, wherein the number of bristle bundles on the partial circular ring is in the range between 8 pieces and 22 pieces; a number of single bristles in a bundle of bristles ranges between 8 and 20 pieces; a diameter of a single bristle is in the range between 1.0 mm and 2.0 mm; a free length of a single bristle is in an unloaded state in the range between 50 mm and 70 mm; a single bristle in a bristle bundle lies in an unloaded state at an angle in the range between 40 ° and 60 ° to an axis of symmetry (and in particular axial axis) of the brush tool; The brush tool is designed for operation with a

Circumferential speed in the range between 23 m / s and 33 m / s, wherein the peripheral speed is related to an end of a bristle bundle in an unloaded state.

It has been found that the appropriate choice of parameters is a good compromise between holding forces for an operator and cleaning efficiency. Basically, a high cleaning efficiency should be present and the holding forces for an operator should be as low as possible to allow a high level of operating comfort. By the mentioned parameter selection, singly or in combination, a correspondingly good compromise can be achieved.

A cleaning machine according to the invention comprises at least one brush tool according to the invention. The cleaning machine is, for example, as a sweeper and / or

Scrubber and / or weed release machine trained.

The cleaning machine according to the invention can be hand-held or hand-guided or, for example, also be self-propelled.

In particular, a cleaning machine according to the invention comprises a drive for a rotational movement of the at least one brush tool and in particular a tool holder for fixing the brush tool (with a fixing device of the brush tool).

According to the invention, a method for producing a brush tool according to the invention is produced in which at least one bundle of bristle bundles is applied to the base body, the fixing element is fixed to the base body, and the at least one bundle of bristle bundles between the first abutment region of the base body and the second contact area of the fixing element is clamped, and wherein the at least one bundle of bristle bundles in the base body and / or on the fixing element is fixed by positive locking.

The invention further provides a method for exchanging bristle bundles on a brush tool according to the invention, in which the fixing element is detached from the base body, a possibly existing bundle of bristle bundles is removed, and then said method for producing a brush tool is performed.

The following description of preferred embodiments is used in connexion with the drawings of further explanation of the invention. Show it :

Figure 1 is an isometric view of an embodiment of a brush tool according to the invention; Figure 2 is another isometric view of the brush tool of Figure 1;

Figure 3 is a plan view of the brush tool of Figure 1 from below;

Figure 4 is a sectional view taken along line 4-4 of Figure 3;

Figure 5 is an isometric view of an embodiment of a

Bundle of bristles which is straightened in a straight line;

FIG. 6 shows a side view of the bristle bundle chain according to FIG. 5;

Figure 7 is a plan view of the bristle bundle chain of Figure 5;

8 shows an isometric view of the bristle bundle chain according to FIG

5 formed into a ring;

FIG. 9 shows an isometric view of a main body of the brush tool according to FIG. 1;

Figure 10 is a plan view of the main body according to Figure 9 from below;

FIG. 11 shows a sectional view of the basic body along the line 11-11 according to FIG. 12;

Figure 12 is a plan view of the main body according to Figure 9 from above;

Figure 13 is a sectional view taken along line 13-13 of Figure 10;

FIG. 14 an isometric arrangement of the main body according to FIG. 9 with bristle bundle chain arranged thereon according to FIG. 8; Figure 15 is a plan view of the combination of body and

Bristle bundle chain according to Figure 14 from above;

Figure 16 is a sectional view taken along line 16-16 of Figure 15;

FIG. 17 shows a plan view of the base body according to FIG. 9 with a bundle of bristle bundles arranged thereon and a fixing element arranged on the base body, wherein the fixing element is not yet a fixing position (in the fixing position the view according to FIG. 3 results);

Figure 18 is a sectional view taken along line 18-18 of Figure 17;

FIG. 19 is an isometric view of the combination of basic body,

Bristle bundle chain and fixing element according to Figure 17;

Figure 20 is a bottom plan view of another embodiment of a brush tool according to the invention with a plurality of successively in the radial direction bristle bundle chains; and

FIG. 21 shows an isometric view of an embodiment of a weed clearance machine as a cleaning machine for use with a brush tool according to the invention.

An embodiment of a cleaning machine in the form of a weed release machine 10 (weed removal machine), which is shown in FIG. 21 and designated 10, comprises a tool head 12. A distal end 14 of the weed release machine 10 is formed on the tool head 12. The weed clearance machine 10 further has an opposite proximal end 16. The tool head 12 is seated on a holding bar device 18. The weed freeing machine 10 with the holding bar device 18 is in particular designed so that an operator can serve the weed freeing machine 10 standing upright. An operator stands in particular behind an active surface 20, on which the weed cleaning machine 10 acts.

In principle, it is also possible for the weed-clearing machine 10 to be designed as a hand-held device, in which case the holding-rod device 18 has a corresponding length or no holding-rod device is present.

In the weed-removal machine 10, a first handle 22 is arranged in the region of the proximal end 14 and in particular in an end region of the holding bar device 18. The first handle 22 has a first grip area 24, which is designed to engage around with a first holding hand of an operator.

In one embodiment, a switch 26 for operating the weed liberating machine 10 is arranged on the first handle 22 in the region of the first handle region 24.

The first handle 22 in one embodiment comprises a bracket 28 which is connected to the first handle portion 24 and a holding portion 28. The first grip region 24 is in turn connected to the holding region 28. The holding region 28 is seated on an end region of the holding bar device 18 or is part of the holding bar device 18.

The first handle 22 thereby encloses an opening 30, through which fingers of the first holding hand can be penetrated.

The first handle 22 is in particular formed with the first grip region 24 in the manner of a pistol grip. The holding bar device 18 in one embodiment comprises a holding bar 32 which extends in a longitudinal direction 34.

The holding rod 32 or the holding rod device 18 has a middle plane. The longitudinal direction 34 is parallel to this center plane or lies in this.

The first grip area 24 likewise lies on this center plane and is in particular symmetrical to this center plane.

There is also a second handle 38 is provided. This second handle 38 is spaced from the first handle 22. It has a second grip area 40. This second grip area 40 can be grasped by the second holding hand of the operator. The second grip region 40 is positioned transversely to the longitudinal direction 34 at a distance from the holding bar device 18. The second gripping area 40 is formed transversely to the first gripping area 24 or transversely to the median plane.

In particular, the second gripping region 40 is formed on a bracket 42, which is positioned on the holding region 28 or on the holding bar device 18.

In one embodiment, the second grip region 40 comprises a middle region 41, on each of which an area 41a or 41b adjoins on one side. The central region 41 is oriented perpendicular to the middle plane and the regions 41a, 41b are oriented obliquely to the latter.

The second handle 38 is symmetrical to the median plane. He has in particular a D-shape.

In one embodiment, the weed clearing machine 10 includes a handle unit 44 having the first handle 22 and the second handle 38 and which is fixed to the holding bar device 18 as a whole. The holding region 28 of the handle unit 44 can be regarded as an extension of the holding bar device 18 and thus also as a functional part of the holding bar device 18.

In one embodiment, it is provided that a length of the weed clearance machine 10 is adjustable as a distance between the tool head 12 and the first handle 22.

In one embodiment, the handle assembly 44 includes a dip area in which the support bar 32 is telescopically submerged. The holding rod 32 can be fixed, for example, via detents or bores on the handle unit 44.

In one embodiment, the holding bar means 18 is pivotally connected to the tool head 12 via a pivot joint 46. The swivel joint 46 has a pivot axis 48, which is transverse to the longitudinal direction 34 or transverse to the center plane.

Via the pivot joint 46, a length of the weed clearance machine 10 between the distal end 14 and the proximal end 16 can be adapted to an operator size.

It is provided in particular that the pivot joint 46 is stiff or the pivot joint 46 is assigned a locking device in order to determine a specific pivot position of the holding rod device 18 to the tool head 12 can.

The tool head 12 comprises a tool holder 50 which is rotatable about a rotation axis 52. The axis of rotation 52 is oriented transversely to the longitudinal direction 34. The rotation axis 52 is further oriented transversely and in particular perpendicular to the pivot axis 48.

In one embodiment, the axis of rotation 52 lies in the median plane.

In particular, it is provided that during proper operation of the weed removal machine 10, in which a tool 54 held on the tool holder 50 acts on the active surface 20, the axis of rotation 52 is oriented transversely and, for example, at least approximately perpendicular to the active surface 20.

The tool 54 is releasably held on the tool holder 50.

In the tool head 12, a drive 56 for the tool holder 50 is arranged and protected by a housing 58.

In one embodiment, the drive 56 is an electric motor.

In this embodiment, the drive 56 is associated, in particular, with reduction gears, which are coupled with torque to the tool holder 50.

For example, a spur gear is provided, which reduces a speed of the drive 56 from, for example, about 9000 revolutions per minute to about 2700 revolutions per minute.

It can be provided between an axis of rotation of the drive 56 and the axis of rotation 52 an axial offset.

In the exemplary embodiment, the drive 56 can be driven by mains current as an electric motor, or it can be provided in particular a rechargeable battery device. In an embodiment with mains power operation, in particular an electric cable 60 is provided, which is fixed to the first handle 22 and is guided away from it. At this electric cable 60, a corresponding power plug is arranged.

In the case of operation via a battery device, in particular the battery device is positioned on the holding region 28 (or alternatively on the tool head 12). The battery device can be removable (in particular for charging) or firmly fixed to the holding region 28.

It is also possible in principle that the drive 56 is an internal combustion engine.

In one embodiment, the tool holder 50 comprises a rotatable about the rotation axis 52 disc 62, to which the tool 54 is releasably fixable. The disk 62 is torque-effectively coupled to the drive 56 via the mentioned torque transmission device.

A protective hood 64 is seated on the tool head 12. The protective hood 64 covers the tool 54 backwards towards an operator. In one embodiment, the protective hood 64 is designed in the manner of a skirt 66, which is positioned on the tool head 12 and projects downwards. The skirt 66 is formed at least approximately as part of a cone section mantle.

It has a type of lip 68 at a lower end 70. About this lip 68, the protective cover 64 can be placed on the active surface 20.

The protective hood 64 surrounds and thereby defines a space 72, which is open towards the front and, for example, is a hollow cone section. In one embodiment, the protective hood 64 with its skirt 66 has an opening angle between forwardly directed edge strips. This opening angle is for example in the range of approximately 135 °.

In one embodiment, the edge strips are positioned at an angle to each other.

The apron 66 (the protective hood 64) is in one embodiment at least partially made of a transparent material. This facilitates the operation.

It is further provided that the protective hood 64 (the skirt 66) is made at least partially of a flexible (elastic) material.

This facilitates cleaning or detachment of adhering dirt.

The protective hood 64 (the skirt 66) may be provided with a coating to aid in easy cleaning.

In one embodiment, the weed clearance machine 10 includes a means 78 for hanging (and thus protecting the tool 54) of the weed clearance machine 10. This means 78 is formed, for example, by an eyelet which is arranged on the first handle 22 (FIG. see Figure 21).

Provision can be made for the weed-release machine 10 to be assigned a holding belt device by means of which an operator can hold the weed-removal machine 10. Accordingly, corresponding fastening means for a tether are arranged on the weed clearing machine 10 and in particular on the holding bar device 18 and / or the first handle 22 (not shown in the drawings). An inventive brush tool 80 (FIGS. 1 to 4) is provided as a tool 54 for fixing to the tool holder 50.

The brush tool 80 is designed in particular as a rotary brush tool which is rotatable about a rotation axis 82. When the brush tool 80 is fixed to the weed clearing machine 10, the rotation axis 82 is coaxial with the rotation axis 52 for the drive 56.

The brush tool 80 is designed in particular in the form of a cup brush.

The brush tool 80 has a base body 84. In Figures 9 to 14, the main body 84 is shown alone.

The main body 84 (compare in particular FIGS. 9 to 13) comprises a bottom wall 86. The bottom wall 86 is annular and, in particular, annular. It is bounded by a first edge 88a and by a spaced second edge 88b. The first edge 88a and the second edge 88b are each circular and concentric with respect to an axis 90. The axis 90 is coaxial with the axis of rotation 82. The axis 90 defines an axial direction on the brush tool 80.

The bottom wall 86 surrounds a recessed area 92. The recessed area 92 itself has a bottom 94, on which an annular wall 96 is arranged transversely and, for example, parallel to the axis 90. The annular wall 96 is, for example, integrally connected to the floor 94.

The recessed area 92 defines a space 97 which is at least approximately hollow cylindrical.

On the bottom wall 86 sits on the second edge 88b a peripheral wall 86 surrounding peripheral wall 98. The edge wall 98 is transverse to the bottom wall 86 oriented and oriented, for example, at an acute angle 100 (see Figure 13) to the axis 90.

In one embodiment, this acute angle 100 is approximately 45 °.

The bottom wall 86 is oriented transversely to the annular wall 98. In one embodiment, the bottom wall 86 is oriented at least approximately perpendicular to the edge wall 98 (see FIG. 11). The bottom wall 86 is then oriented in particular at an acute angle 102 (see FIG. 13) to the axis 90, which corresponds to the difference between the acute angle 100 and a 90 ° angle.

By an angular arrangement of the bottom wall 86 to the axis 90, the base body 84 can be formed with the recess region 92 with relatively small height dimensions parallel to the axis 90 (see Figure 11).

The brush tool 80 has a fixing device 104 for rotationally fixed fixing to the tool holder 50. This fixing device 104 is arranged or formed on the base body 84 and in particular arranged or formed on the bottom 94.

In one embodiment, the fixing device 104 comprises a bushing 106, which is arranged centrally on the bottom 94 and in particular is integrally formed with the bottom 94. The bush 106 protrudes from a side of the bottom 94 facing away from the recess area 92.

The bushing 106 has a central opening 108 through which a shaft of the cleaning machine can be penetrated.

The shaft is in particular threaded. The bushing 106 has an inner space 110, which is not rotationally symmetrical to the axis 90 and, in particular, is designed as a (hollow) prism. This (hollow) prism has, for example, a hexagonal cross-section.

To fix the brush tool 80 on the base body 84 with a cleaning machine, the shaft of the cleaning machine is penetrated through the opening 108. A nut is screwed onto the shaft or the shaft is screwed onto a nut, which is then rotationally fixed in the interior 110.

A thread between the shaft and the nut is formed in the opposite direction to a direction of rotation of the brush tool on the cleaning machine.

The brush tool 80 comprises (at least) one bristle bundle chain 112 (see in particular also FIGS. 5 to 8) with a plurality of bristle bundles 114. A bristle bundle 114 in turn comprises a plurality of individual bristles 116.

The bristle bundle chain 112 is releasably held to the bristle tool 80; In bristle wear bristles can be replaced by the fact that the corresponding bristle bundle chain 112 is replaced.

The bristle bundle chain 112 includes a plurality of chain links 118. Adjacent chain links 118 are interconnected.

In one embodiment, a chain link 118 includes a bush 120 that forms a receptacle 122 for a bristle bundle 114.

The corresponding bristle bundle 114 is positioned in a recess 124. The recess 124 is, for example, a hollow cylinder. A corresponding bundle of bristles 114 is in particular fixedly positioned on the bush 120 (on the receptacle 122). It is, for example, glued into a socket 120 or fixed to the socket 120 by injection molding.

In one embodiment, a bristle bundle 114 is plugged into a receptacle 122 and, for example, additionally fixed by one or more metal clips.

In this case, provision is made in particular for loops to be formed on individual bristles 116 to produce a bristle bundle 114 and to be positioned with a loop region in the receptacle 122. As a result, the two opposite ends of a single bristle form bristle tips 126 on a bristle bundle 114. A length of a bristle bundle 114 in an unloaded state is then approximately half the length of a single bristle 116.

The bristle bundle chain 112 has an extension in a longitudinal direction 126 (FIG. 5).

Adjacent chain links 118 are connected to one another via webs 128. It is provided in particular that a web 128 is seated on a bushing 120 and is thereby connected to the adjacent bushing. The web 128 is in particular integrally connected to the respective sockets 120; a bridge 128 forms a bridge between adjacent sockets 120.

The webs 128 are arranged and / or formed such that the bristle bundle chain 112 is movable in a direction 130 (FIG. 5) transversely to the longitudinal direction 126 (and transversely to a longitudinal direction of bristle bundles 114 in the unloaded state) and is deformable thereby. This mobility is achieved in particular by a corresponding deformability of the webs 128. It is thereby possible a shape adaptation of the bristle bundle chain 112. In particular, the bristle bundle chain 112 can thereby be adapted in its shape to the base body 84 (cf. FIG. 8). This will be explained in more detail below.

It is in principle possible for the bristle bundle chain 112 to be closed and fixed in this form to the brush tool 80.

In an advantageous embodiment, the bristle bundles 112 have a first end 132 and a second end 134. The first end 132 and the second end 134 are not interconnected.

In particular, the bristle bundle chain 112 with the desired number of bristle bundles 114 (corresponding to the desired number of chain links 118) can then be produced from a longer chain, for example by cutting. The longer chain is provided, for example, as roll goods.

The bristle bundle chain 112 is brought into the form by appropriate movement of the chain links 118 in the transverse direction 130 to each other, which is necessary in order to fix them to the main body 84. The longitudinal extension direction 126 then has a course (compare FIG. 8), which is correspondingly adapted to a geometric design of the main body 84.

The sockets 120 of the chain links 118 each have a first leg 136 and an opposite second leg 138. These protrude in the transverse direction 130 away from the socket 120.

The feet 136, 138 serve for a form-fitting fixation, in particular in the direction of the axis 90 on the brush tool 80. The chain links 118 are in particular mirror-symmetrical with respect to a mirror axis, which is oriented perpendicular to the transverse direction 130.

This facilitates the assembly of the brush tool 80, since there is then no "wrong insertion direction" for a bristle bundle chain 112.

A bushing 120 has an at least approximately hexagonal outer contour 140. Relative to a centerline 142, a bushing has a width B (see FIG. 7) which decreases in the direction of the first root 136 perpendicular to the centerline 142 (in the transverse direction 130). and also decreases toward the second leg 138 perpendicular to the centerline 142 (in the transverse direction 130).

The width B is a width parallel to the longitudinal extension direction 126 at the corresponding bush 120.

A bushing B of width B has a depth T perpendicular to the centerline 142 (parallel to the transverse direction 130). A web 128 is seated on the center line 142, wherein a depth of a web 128 is smaller (in particular considerably smaller) than the depth T of a bushing 120.

In particular, the recess 124 is seated on the center line 142 with a corresponding symmetrical design.

In the depth direction (perpendicular to the centerline 142), a socket 120 has a first side surface 144a and an opposite second side surface 144b.

The first side surface 144a and the second side surface 144b are aligned in particular parallel or at a small acute angle (less than or equal to 10 °) to each other. It is further provided in particular that the first side surface 144a and the second side surface 144b are flat.

The first leg 136 protrudes beyond the first side surface 144a. The second leg 138 projects beyond the second side surface 144b.

From the center line 142 to the first side surface 144a or from the center line 142 to the second side surface 144b, the bush 120 is wedge-shaped in cross-section (see FIG. 7).

The main body 84 has receptacles 146 for the respective chain links 118 (the bushings 120 of the bristle bundle chain 112). A receptacle 146 is formed by spaced web elements 148a, 148b (compare for example FIG. 9). The web elements 148a, 148b are arranged on the edge wall 98 and protrude in one embodiment to the bottom wall 86. In particular, they are integrally arranged on the edge wall 98 and integrally connected to the bottom wall 86.

Between adjacent web members 148a, 148b, a space 150 for partially dipping a bushing 120 is formed.

In particular, the space 150 tapers in its width toward the edge wall 98 in a manner adapted to the wedge-shaped configuration of the bushes 120. The web elements 148a, 148b are correspondingly formed.

In principle, it is possible for a web element to form a web element for adjacent receptacles 146.

In the embodiment shown, each receptacle 146 has its own web elements 148a, 148b. As a result, a saving of material in the production of the main body 84 can be achieved. The web elements 148b, 148b project away from the edge wall 98. Due to the mentioned taper towards the edge wall 98, they are generally not exactly aligned with a radial direction 152.

They have a length in their Abragungsrichtung of the edge wall 98 away, which is such that when positioned bristle bundle chain 112, the webs 128 in front of the web elements 148a, 148b are (see Figure 14).

The receptacles 146 each have a recess 154 in the edge wall 98. Such a recess 154 is arranged between associated web elements 148a, 148b and has an extent in a circumferential direction 156 and an extent in the radial direction 152.

In one embodiment, the recesses 154 are continuous to the surface (see FIG. 1).

In particular, a plurality of recesses 154 spaced and preferably evenly spaced in the circumferential direction 156 on the body 84 are arranged.

A recess 154 serves to receive a foot 136 or 138; the respective foot is submerged in the recess 154. The recess 154 is adapted to the dimensions of the feet 136, 138. If feet 136 or 138 of the bristle bundle chain 112 are immersed in the respective recesses 154, then a form-fitting fixation, in particular with respect to the axial axis 90, is achieved.

It is basically a kinematic reversal possible, are formed in the feet on the body and Eintauchausnehmungen for feet on the chain links. When making the brush tool 80 (or inserting a new bristle bundle chain 112), the corresponding bristle bundle chain 112 is positioned on the body 84 (see FIGS. 14-16).

The bristle bundle chain 112 is thereby brought into a shape that follows the contour of the edge wall 98 (see also FIG. 8). The respective chain links 118 with their sockets 120 are brought into the receptacles 146 between the web elements 148a, 148b. The respective feet 136 and 138, respectively, are inserted into the respective recesses 154.

The main body 84 has a first abutment region 158 for abutment of the bristle bundle chain 112. The first contact region 158 is formed by the intermediate surfaces between the web elements 148 a, 148 b, corresponding to the abutment surfaces of the web elements 148 a, 148 b and a contact surface (support surface) of the bottom wall 86. At this first contact area 158, the sockets 120 rest on the main body 84.

Optionally, the webs 128 may also rest against the end face of the web elements 148a, 148b.

The second side surface 144b of the respective bushes 120 bears against the edge wall 98 in the region between the web elements 148a, 148b. An underside of the sockets 120 is supported on the bottom wall 86.

The brush tool 80 further comprises a fixing element 160, which can be fixed to the base body 84 via a fixing device 162. The fixing element 160 in turn has a second abutment region 164, with which it acts on the bristle bundle chain 112 and in particular on the bushes 120, the bristle bundle chain 112 between the first abutment region 158 of the main body 84 and the second abutment region 164 of the Fixing element 160 is clamped when the fixing element 160 is fixed to the base body 84. The fixing device 162 is designed such that the fixing element 160 can be fixed by a rotary movement with a rotation axis coaxial with the axis of rotation 82 or coaxial with the axis 90 on the base body 84 or by a rotational movement (in particular with a rotational direction opposite to the direction of rotation for the determination ) is detachable from the base body 84.

It is provided in particular that the fixing element 160 as a whole is removable from the brush tool 80, that is to say is completely detachable from the base body 84. A bristle bundle chain 112 that has already been used can then be removed in a simple manner, or a new bundle of bristle bundles 112 can be used.

In one embodiment, the fixing device 162 is designed in the manner of a bayonet closure device.

On the main body 84 a plurality of spaced and in particular circumferentially spaced slot members 166 are arranged.

In the embodiment shown, three slot elements 166 are provided. The slot elements 166 are positioned on the bottom 94 of the recessed area 92.

A slot member 166 includes a web 168 which is connected to the bottom 94 and in particular integrally connected. Between the web 168 and the bottom 94, a slot 170 is formed.

It is possible that for ease of manufacture of the slot elements 166 on the bottom 94 opposite to the slot 170, an opening 172 (cf., for example, FIG. 1) is formed.

The fixing element 160 is ring-shaped with a ring wall 174 and a bottom wall 176. The annular wall 174 rises from the bottom wall 176th On the bottom wall 176 tabs 178 (Figures 17, 18) are formed or the tabs 178 form the bottom wall 176th

The number of tabs 178 corresponds to the number of slot elements 166.

In particular, between adjacent tabs 178 are spaces in the circumferential direction 156.

A tab 178 is formed to be dipped in a slot 170.

It may be provided that a tab 178 has a spring element 180, which is in particular biased. In one embodiment, a slot 182 is formed between the respective spring member and the remainder of the tab 178 to permit separate movement of this spring member 180 from the remainder of the tab 178.

A slot element 166 has a receiving region 184 for the spring element 180. When the fixing member 160 is fixed to the base body 84 in a fixing position, the spring member 180 is positioned in the receiving member 184.

The receiving element 184 as part of the slot member 166 is separated in particular via a slot 186 from the rest of the slot member 166.

When a spring member 180 is positioned in the receiving member 184, a type of latching of the tab 178 with the corresponding slot member 166 is achieved.

On the fixing element 160 stop elements 188 are arranged, which are formed, for example, in the manner of flags. A stop element 188 is positioned in particular at one end of the corresponding tab 178. If a fixing element 160 is positioned correspondingly on the base body 84 (compare, for example, FIG. 17) and then the fixing element is rotated in a direction of rotation 190 such that the lugs 178 engage in the respective slots 170, this is the fixing position of the fixing element 160 reaches the base body 84 when the abutment elements 188 abut against end regions 192 (cf. FIG. 2) of the associated slot elements 166 (of the webs 168). In this position, the spring elements 180 are then positioned in the receiving elements 184.

The annular wall 174 of the fixing element 160 has a region 194 for engagement with the annular wall 96 of the base body 84.

In the fixation of the fixing element 160 on the base body 84 or in the solution of the fixing element 160 of the main body 84 by a corresponding rotational movement, in particular this region 194 slides on the annular wall 96th

The annular wall 174 of the fixing element 160 furthermore has a region 196 which serves to bear against the first side surface 144a of bushes 120 of the bristle bundle chain 112. About the area 196 can be the

Clamp the bristle bundle chain 112 between the first contact area 158 and the second contact area 164.

Furthermore, the fixing element 160 has a plurality of circumferentially spaced recesses 198 or a continuous annular recess 198. These recesses or recesses 198 are positioned between the regions 194 and 196 and serve to receive the corresponding first foot 136 of the bushes 120 the chain links 118 of the bristle bundle chain 112. When the fixing element 160 is fixed to the base body 84, the corresponding foot 136 is immersed in the associated recess 198 (compare, for example, FIG. 18). It is through a positive locking and thus lift-off for the bristle bundle chain 112 of the base body 84 and the fixing member 160 is formed.

In principle, a kinematic reversal is possible in which the feet are arranged on the fixing element and assigned immersion recesses on the chain links.

The second abutment region 164 of the fixing element 160 for bearing against the bristle bundle chain 112 is formed, in particular, over the region 196 and, if appropriate, the recess or recesses 198.

The brush tool 80 is manufactured in particular as follows:

Starting from the main body 84 (see FIGS. 9 to 13), the appropriately selected bristle bundle chain 112 (in which the number of chain links 118 coincides with the number of receptacles 146) is positioned on the main body 84. In this case, the bushes 120 are inserted into the respective receptacles 146 between web elements 148a, 148b, wherein the bushes 120 are then supported on the bottom wall 86 (see FIGS. 14 to 16). The fixing element 160 is then placed in such a way that the tabs 178 lie between adjacent slot elements 166 (FIGS. 17 to 19).

The fixing element 160 is then rotated in the direction of rotation 190 (FIG. 17). As a result, the tabs 178 dive into the associated slots 170. This immersed position corresponds to the position according to FIGS. 1 to 4.

The rotation in the direction of rotation 190 takes place in such a way that the respective stop element 188 of the fixing element 160 bears against the respective slot element 166. It is then also achieved that the respective spring elements 180 are positioned on the respective receiving elements 184.

It is done by a kind of locking and the rotational position is secured.

The direction of rotation 190 for establishing the connection between the fixing element 160 and the main body 84 is such that it corresponds to a direction of rotation of the brush tool 80 during operation of the corresponding cleaning machine, so that no solution can be obtained by the rotation.

The fixing element 160 in its fixing position acts on the bristle bundle chain 112, specifically on the first side surface 144a. It tensions the bristle bundle chain 112 with its bushings 120, specifically between the first abutment region 158 of the main body 84 and the second abutment region 164 of the fixing element 160.

The feet 136 of the bristle bundle chain are immersed in the recesses 198 on the fixing element 160.

Via a form-locking device, the bristle bundle chain 112 is fixed to the base body 84 and the fixing element 160. About the feet 136, 138 and immersion in the recesses 154 and 198, a form-fitting connection with respect to the axis 90 is formed as an axial securing against lifting. Furthermore, a form fit in the circumferential direction 156 (including the opposite direction) can be achieved.

By positioning the bushes 120 between the web elements 148a, 148b, a form-fitting connection relative to the circumferential direction 156 is formed.

By clamping the bristle bundle chain 112 between the annular wall 174 of the fixing element 160 and the edge wall 98 with the oblique Bottom wall 86 is a positive connection in the radial direction 152 made.

When an operator wants to replace the bristle bundle chain 112 after bristle pack wear, he releases the fixation element 160 from the body 84 by rotating it counter to the direction of rotation 190 and removes it. He can then remove the bristle bundle chain 112 and insert a new bundle of bristle bundles and, with the same steps as described above, again produce the brushing tool 80.

To replace the bundles of bristles by exchanging a bristle bundle chain 112, the brush tool 80 does not have to be removed from a tool holder of the cleaning machine. The main body 84 may remain fixed to the tool holder. The solution of the fixing element 160 and the solution of the bristle bundle chain 112 or the insertion of the bristle bundle chain 112 and the placement of the fixing element 160 and then the fixing element 160 and its fixation can be turned away from the side to the tool holder carry out. This is indicated in Figure 16 by the double arrow with the reference numeral 200.

The formation of the bristle bundle chain 112 with a corresponding design and arrangement of the bristle bundles 114 is adapted to the respective application.

In one embodiment, the brush tool is designed as a cup brush for the weed removal machine 10 as a cleaning machine. In particular, then the bristle bundles 114 are on a pitch circle (given by the edge wall 98 with the receptacles 146).

It is specifically intended that a number of the bristle bundles 114, which are seated on the partial ring ring on the brush tool 80, in the range between eight pieces and 22 pieces; and / or a number of individual bristles 116 in a bundle of bristles 114 are in the range between eight and twenty pieces; and / or a diameter of a single bristle in the range between 1.0 mm and 2.0 mm; and / or a free length of a single bristle 116 as a length, with which this protrudes beyond a respective bushing 120, in an unloaded state in the range between 50 mm and 70 mm; and / or that a single bristle 116 in a bundle of bristles 114 is oriented in an unloaded state at an angle in the range between 40 ° and 60 ° to the axis 90; and / or the weed clearing machine 10 is operated at a peripheral speed of the brush tool 80 in a range between 23 m / s and 33 m / s, wherein the peripheral speed is related to an end of a bristle bundle 112 in an unloaded state.

It has been found that with these values, an optimized adjustment in terms of holding forces for an operator for the weed liberating machine 10 and cleaning efficiency is achieved. In particular, weed clearance can be achieved by a combination of trimming and cleaning. Reference is made in this connection to the non-prepublished international application PCT / EP2018 / 057793 dated March 27, 2018, to which reference is made in its entirety.

A brush tool 80 according to the invention can also be used for other applications, such as sweeping applications. Especially can be made by appropriate selection of the bristle bundle chain 112 adaptation to a particular application.

A corresponding brushing tool 80 can be used for a hand-held or hand-guided machine or for a self-propelled machine such as a sweeper. For example, scrubbing applications (scrubbing applications) and the like are also possible.

In principle, it is also possible to provide a brush tool 220 (FIG. 20) which has a plurality of bristle bundle chains 222, which are spaced apart in the radial direction.

In particular, a bristle bundle chain 224 is supported on a base 226 as described above. Another bristle bundle chain 228 then rests against the bristle bundle chain 224. A fixing element 230 is supported on the bundle of bristle bundles 228 and thereby tensions the bundles of bristle bundles 224 and 228 between a first abutment region 232 of the main body 226 and a second abutment region 232 of the fixing element 230.

In principle, it is also possible to provide a form-locking connection, in particular with respect to an axial axis, between the bristle bundle chains 224 and 228.

At least over one foot is a positive locking of the bristle bundle chain 224 with the base body 226 and the bristle bundle chain 228 with the fixing element 230 before.

It is also possible, for example, for bushes 236 of bristle bundle chain 228 to lie between bushes 236 of bristle bundle chain 224, the bushings of adjacent bundles of bristle bundles mutually supporting one another. It is also possible for more than two bundles of bristle bundles 222 to follow one another in the radial direction.

According to the invention, a brushing tool 80 or 220 is provided in which, in the case of bristle wear, bundles of bristles can be exchanged in a simple manner by exchanging bristle bundle chains 112, etc. The corresponding brush tool 80 or 220 does not have to be removed from a tool holder; the corresponding basic body 84 or 226 can remain fixed there.

This results in a material-saving training with easy Wechselbar- speed. Furthermore, there is a high adaptability to special applications.

It is fundamentally possible for a plurality of bristle bundle chains 112 with at least two chain links 118 to be used on one part-circle ring. It is preferable for an operator to use a single bristle bundle chain 112 on a pitch ring. As a result, in particular the applicability for the production of the brush tool 80 is facilitated.

LIST OF REFERENCE NUMBERS

Weed liberation machine

tool head

Distal end

Proximal end

Retaining bar means

effective area

First move

First grip area

switch

holding area

opening

retaining bar

longitudinal direction

Second hand

Second grip area

the central region

a, b range

hanger

Handle unit

pivot

swivel axis

toolholder

axis of rotation

Tool

drive

casing

electric cable

disc

guard

apron lip

Lower end

room

Hanging storage facility

Brush tool

axis of rotation

body

bottom wall

a first edge

b Second edge

Axis (axial direction)

depression area

ground

ring wall

room

edge wall

0 sharpener angle

2 acute angles

4 fixing device

6 socket

8 opening

0 interior

2 bristle bundle chain

4 bundles of bristles

6 single bristles

8 links

0 socket

2 recording

4 recess

6 longitudinal direction

8 footbridge

0 transverse direction

2 First end Second end

First foot

Second foot

outer contour

center line

a First side surface Second side surface

admission

a bar element b bar element

room

Radial direction

recess

circumferentially

First investment area

fixing element

setter

Second investment area

slot member

web

slot

opening

annular wall

bottom wall

flap

spring element

slot

receiving element

slot

stop element

direction of rotation

forehead

Area Area

recess

Insertion direction Brushes Tool Bristle bundle chain Bristle bundle chain Base body

Bristle bundle chain Fixation device First investment area Second investment area Socket

Claims

claims

A brush tool for a cleaning machine (10), comprising a base body (84) having a first abutment portion (158), at least one bristle bundle chain (112) having a plurality of chain links (118), at least one chain link (118) A fixing element (160) having a second abutment region (164), wherein the fixing element (160) is fixed to the base body (84) and the at least one bristle bundle chain (112) between the first contact area (158) and the second contact area (164) is clamped.

2. brush tool according to claim 1, characterized in that the at least one bundle of bristle bundles (112) via a form-locking device on the base body (84) and / or on the fixing element (160) is held, in particular positive-locking elements (144a , 144b, 136, 138) on the at least one bristle bundle chain (112) and counter elements (86, 148a, 148b, 154, 198) on the base body (84) and / or the fixing element (160) are arranged.

3. brush tool according to claim 1 or 2, characterized in that the fixing element (160) releasably connected to the base body (84) is connected.

4. brush tool according to one of the preceding claims, characterized in that the at least one bristle bundle chain (112) releasably connected to the base body (84) and / or the fixing element (160) is connected.

5. brush tool according to one of the preceding claims, characterized in that adjacent chain links (118) via a web (128) are interconnected.

6. brush tool according to one of the preceding claims, characterized in that the at least one bristle bundle chain (112) has a longitudinal extension direction (126) and a mobility in a direction (130) transversely to the longitudinal direction (126) up points.

Brush tool according to claim 6, characterized in that a chain link (112) has at least one foot (136; 138) which extends transversely to the longitudinal extension direction (126).

8. brush tool according to claim 6 or 7, characterized in that a chain link (118) is formed mirror-symmetrically.

9. brush tool according to one of the preceding claims, characterized in that a chain link (118) at least one receptacle (122) for a bristle bundle (114) and in particular exactly one receptacle (122) for a bristle bundle (114).

10. brush tool according to claim 9, characterized in that a bristle bundle (114) in the associated receptacle (122) is held firmly.

11. Brushing tool according to claim 9 or 10, characterized in that a bundle of bristles (114) is stuffed into the associated receptacle (122) or held by an injection molding process, or is glued.

12. Brush tool according to one of the preceding claims, characterized in that a single bristle (116) forms bristle tips of a bristle bundle (114) with its two ends.

Brush tool according to one of the preceding claims, characterized in that a bundle of bristle bundles (112) is provided as rolled goods.

Brush tool according to one of the preceding claims, characterized in that the at least one bristle bundle chain (112) has a first end (132) and a second end (134), which are not connected to each other.

15. Brush tool according to one of the preceding claims, characterized in that a chain link (118) comprises at least one bush (120) as a receptacle (122) for a bristle bundle (114).

16. Brush tool according to claim 15, characterized in that contact surfaces (144a, 144b) for the first contact region (158) and / or the second contact region (164) are formed on the at least one bushing (120).

17. Brushing tool according to claim 15 or 16, characterized in that on the bush (120) at least one web (128) for connection to an adjacent chain link (118) is arranged and / or at least one foot (136, 138) for a positive locking with the

Base body (84) and / or the fixing element (160) is arranged.

18. Brush tool according to one of claims 15 to 17, characterized in that the bushing (120) at least in regions with respect to an outer contour has a decreasing in one direction width, which on an associated receptacle (146) of the base body (84 ) is adjusted.

19. Brush tool according to one of the preceding claims, characterized in that the base body (84) comprises a fixing device (104) for fixing and in particular detachable fixing of the brush tool on a tool holder (50) of the cleaning machine (10).

20. brush tool according to claim 19, characterized in that the fixing device (84) is arranged and formed so that the fixing element (160) and the at least one bristle bundle chain (112) of the base body (84) are releasable and on the base body (84) are positionable when the base body (84) on the tool holder (50) via the fixing device (104) is fixed.

21. Brush tool according to one of the preceding claims, characterized in that the base body (84) has a plurality of receptacles (146) for chain links (118).

22. brushing tool according to claim 21, characterized in that a receptacle (146) in a circumferential direction (156) adjacent web elements (148a, 148b), between which a chain link (118) in particular with a socket (120) sits, wherein via the web elements (148a, 148b) a chain link (118) in the circumferential direction (156) is held in a form-fitting manner.

23. Brush tool according to claim 22, characterized in that between adjacent web elements (148a, 148b) a receiving space is formed, the width of which decreases in a radial direction (152) to an edge wall of the base body (84).

24. brush tool according to claim 22 or 23, characterized in that webs (128) of the at least one bristle bundle chain (112), which adjacent chain links (118) interconnect before the web elements (148 a, 148 b) of the base body (84 ) are positioned.

25. Brush tool according to one of claims 21 to 24, characterized in that a receptacle (146) has a recess (154) for a foot element (136; 138) of a chain link (118), wherein in particular one in the Recess (154) dipped foot member (136; 138) a chain link (118) is held in a positive direction in an axial direction (90).

26. brush tool according to one of claims 21 to 25, characterized in that the base body (84) has a peripheral edge wall (98), on which web elements (148a, 148b) and / or recesses (154) for positive retention the at least one bristle bundle chain (112) are arranged or formed.

27. Brush tool according to claim 26, characterized in that the base body (84) has a bottom wall (86) on which the peripheral edge wall (98) protrudes, wherein the bottom wall (86) has a support region for chain links (118) of the at least one

Bristle bundle chain (112).

28. Brush tool according to claim 27, characterized in that the bottom wall (86) is oriented obliquely to an axial axis (90) and / or the first bearing region (158).

29. Brushing tool according to claim 27 or 28, characterized in that the base body (84) has a recessed area (92) which is surrounded by the bottom wall (86).

30. Brush tool according to one of claims 21 to 29, characterized in that the first abutment region (158) is at least partially formed on the receptacles (146).

31. Brush tool according to one of the preceding claims, characterized by a fixing device (162) for the fixing element (160) for attachment to the base body (84), wherein a fixed position of the fixing element (160) on the base body (84). by rotation of the fixing element (160) relative to the base body (84) can be produced and is releasable.

32. brushing tool according to claim 31, characterized in that the fixing device (162) is designed as a threaded device or bayonet closure device.

33. Brushing tool according to claim 32, characterized in that that part (166) of the fixing device (162), which is arranged on the base body (84), is positioned on a recessed area (92) of the main body (84) which axially spaced from the at least one bristle bundle chain (112).

34. Brushing tool according to claim 32 or 33, characterized in that on the base body (84) a plurality of slot elements (122) with respective slots (170) for counter-elements (178) of the fixing element (160) are arranged.

35. Brush tool according to claim 34, characterized in that

a slot element (122) is assigned a spring element (180), which effects a rotational fixation of the fixing element (160) on the base body (84).

36. Brushing tool according to claim 34 or 35, characterized in that on the fixing element (160) at least one stop element (188) for a slot element (122) is arranged, which rests at the fixed position.

37. Brush tool according to one of the preceding claims, characterized in that the fixing element (160) recesses (198) for feet (136, 138) of chain links (118) for positive retention in particular in an axial direction (90).

38. Brush tool according to one of the preceding claims, characterized in that the second abutment region (164) is at least partially formed on an outer side of a wall of the fixing element (160).

39. Brush tool according to one of the preceding claims, characterized in that between the first contact area (158) and the second contact area (164) in the radial direction (152) successively at least two bristle bundle chains (222, 224) are arranged In particular, adjacent bristle bundle chains are supported against each other.

40. Brushing tool according to one of the preceding claims, characterized by a design as a rotary brush tool.

41. Brush tool according to one of the preceding claims, characterized by at least one of the following:

Bristle bundles (114) are seated on a partial circular ring, the number of bristle bundles (114) on the partial circular ring being in the range between 8 and 22 pieces; a number of individual bristles (116) in a bundle of bristles (114) ranges between 8 and 20 pieces; a diameter of a single bristle (116) is in the range between 1.0 mm and 2.0 mm; a free length of a single bristle (116) is in an unloaded state in the range between 50 mm and 70 mm; a single bristle (116) in a bundle of bristles (114) lies in an unloaded state at an angle in the range between 40 ° and 60 ° to an axis of symmetry of the brush tool; the brush tool is designed to operate at a peripheral speed in the range between 23 m / s and 33 m / s, the peripheral speed being related to one end of a bristle bundle in an unloaded state.

42. A cleaning machine, comprising at least one brush tool (80;

220) according to any one of the preceding claims.

43. Cleaning machine according to claim 42, in particular designed as a sweeper and / or scrubbing machine and / or weed liberating machine (10).

44. Cleaning machine according to claim 42 or 43, characterized by a drive (56) for a rotational movement of the at least one brush tool (80; 220).

45. Method for producing a brush tool according to one of claims 1 to 41, in which at least one bundle of bristle bundles (112) is applied to the base body (84), the fixing element (160) is fixed to the base body (84), and in that the at least one bundle of bristle bundles (112) is clamped between the first abutment region (158) of the main body (84) and the second abutment region (164) of the fixing element (160), and wherein the at least one bristle bundle chain (112 ) is fixed to the base body (84) and / or to the fixing element (160) by positive locking.

* * *