WO2017198618A1

WO2017198618A1 - Lawn edge trimming device

Info

Publication number: WO2017198618A1
Application number: PCT/EP2017/061613
Authority: WO
Inventors: Markus Kress
Original assignee: Markus Kress
Priority date: 2016-05-18
Filing date: 2017-05-15
Publication date: 2017-11-23
Also published as: DE102016208519A1

Abstract

The invention relates to a lawn edge trimming device comprising a cutting tool and a drive device with a shaft. The invention is characterised in that the lawn edge trimming device comprises a cleaning tool, preferably a brush and particularly a roller brush, which is arranged next to said cutting tool preferably on the shaft, the cutting tool being a cutting disc that has a circular circumference and slots distributed across the circumference.

Description

LAWN EDGE CUTTING DEVICE

The invention relates to a lawn edge cutting device comprising a

Cutting tool and a drive device with a shaft.

Lawns are usually limited by paths, beds or hedges. At the edges, a clean, straightforward demarcation is desired. However, the roots of the grass plants tend to grow beyond the boundary and overgrow the boundary. As is known, such edges can only be processed inadequately with the lawn mower. For example, mechanical or electric lawn edge cutters remove the overhanging blades of grass, but the overhangs, also called sods, which have already grown over the boundaries, can not be removed. Do not worry about this

To let demarcation grow out, you can use trimmers with rotating ones

Insert nylon cutting threads. A disadvantage of these trimmers, however, is that the wear of the nylon thread is very high, and due to the

Thread speed a high dust and dirt development occurs.

To delineate fortified paths on the same level with the

Reaching grassy areas can alternatively be shearing and rotating

Cutting threads are used. However, these only solve the problem

insufficient because they are not straightforward and sharp-edged demarcation

Make available. With semicircular spades can also open

mechanically cut overhangs. However, the overhangs then have to be removed from the ground in a second step.

Electric lawn edge cutters are known from the prior art, which have a rotating disc or cutter bar and cut a parting line for delimitation in the ground. For example, EP 1 616 473 A1 shows such a system, wherein the rotating disk comprises knives. The lawn edge trimmer known from EP 1 616 473 A1 is guided on rollers and has an edge deflector which supports the severed overhangs separates from the cut surface by lying down the separated sods to the side.

In addition to the edge cutter, as known from EP 1 616 473 A1, joint cutters have become known in the prior art, which cut a defined joint in the ground due to their knife geometry. In this regard, reference is made to DE 102 012 004 037 A1.

From EP 2 022 321 B1 a lawn edge cutter has become known which comprises a disk which is arranged at an angle to the vertical.

US 4,979,573 B shows a lawn edge cutting device with a

Cleaning brush. From US 4,979,573 B has not become known that different processing tools, eg. B. the cutting disc and the brush can be replaced. Furthermore, the

Lawn cutting device according to US 4,979,573 B also can not be performed on the lawn.

A lawn edge cutting device with a brush attached to the

Grass edge cutting device itself is attached, has become known from US 2,826,889 B. Also in the US 2,826,889 B no interchangeability of brush and cutting disc of the lawn edge cutter has become known.

US 3,006,421 B shows an alternative embodiment of a

Lawn edge cutting device with a brush and a cutting disc. In the US 3,006,421 B also no interchangeability of cutting disc and brush is provided.

The US 4,046,200 B discloses a device for lawn edge cutting with a brush roller. In the device known from US 4,046,200, the brush roller is driven separately to the cutting wheel of the lawn edge cutting device. WO2016 / 008763 A2 shows a roller brush for a cleaning and / or care device. A lawn edge cutting device is not described in WO2016 / 008763 A2. From DE 10 2012 004 037 A2 a hand-held implement with an edge or joint cutter has become known. However, the implement of DE 10 2012 004 037 A2 does not show a roller brush.

A lawn edge cutter without a brush has also become known from EP 1 616 473 A1.

The devices disclosed in US 4,979,573 B, US 2,826,889 B, US 3,006,421 B and US 4,046,200 having a lawn edger and a brush have a distance to the ground defined by a plurality of rollers or wheels. The distance between the brush and the knife to the surface to be machined is determined by the flatness of the track. As soon as the path has a slope in the course of the processing path, brush and cutting disc engage deeper or less deeply into the processing surface. The same applies to paving stones with deeper joints and natural stones with larger ones

Height differences. Even with these surfaces, the distance between the two processing devices to the surface to be machined is not constant. The result is different cutting depths and uneven

Cleaning results of the rotating brush. Furthermore, all of the aforementioned systems have the disadvantage that the overhangs to be removed are insufficiently or not eliminated at all. To remove the overhangs to be removed is usually a second one

Operation required, in particular to the possibly also grown on the stones or in the joints between the stone slabs

Eliminate overhangs. A further problem with the prior art is that the cutting edge of the lawn edge cutter often only has insufficient cutting force and, moreover, stones and particles are thrown out of the kerf which can injure the operator.

The object of the invention is to avoid the disadvantages of the prior art described above.

According to the invention, this object is achieved by a lawn edge cutter or a lawn edge cutting device according to claim 1. Preferably, in a lawn edge cutting device with a cutting tool and a shaft, a cleaning tool, in particular a brush, in particular a roller brush is provided, which is arranged next to the cutting tool, preferably on the same shaft. By arranged next to the cutting brush a uniform cleaning effect of the swept surface is effected, in particular the brush serves in the form of a brush roller to rotate at the edge to the transition and to free the edge strip of stone from the overhangs and mosses. Even an unevenly high growth of the overhang can be completely removed with the brush by staying longer at the relevant point. The lying next to the brush

Cutting disc penetrates the edge into the ground. Therefore, the serves

Brush roller not only to free the edge strip of the overhangs, but also the leadership of Rasenenkantenschneidvornchtung and thus ensures a certain depth of penetration of the cutting tool, in particular the cutting disc.

Cutting disc and brush are exchangeable, ie the cutting disc can be arranged on the motor side or away from the engine. If the cutting disc is replaced, it is possible that the brush is arranged on the motor side and the cutting disc facing away from the motor or vice versa. In the device according to the invention with a brush roller, the distance to the working surface is determined solely by the brush roller and the resistance of the lawn edge to be cut off. The invention

Lawn edge trimmer has only one idler wheel that supports the unit on the opposite side of the cutting / brushing combination. By moving the lawn edge cutter back and forth in

Machining direction, the operator, the cutting and cleaning result, regardless of the surface condition of the track itself

determine.

The brushes, in particular the roller brush, are preferably equipped with bristles. The bristles are grouped into bristle bundles. The

Diameter of the bristles are in the range between 0.5 mm and 2.0 mm, preferably between 1, 0 mm to 1, 5 mm. As a preferred material for the bristles, a plastic, in particular polyamide is used. But it can too

Steel wire or coated steel wire can be used as material.

The diameter of the brush roller is between 50 mm to 200 mm, in particular 80 mm to 150 mm. The width of the brush roller is in the range of 20 mm to 100 mm, preferably 30 mm to 80 mm. In order to remove the overhangs through the brush well, a diameter of 80 mm to 150 mm, preferably 100 mm, has proven to be advantageous. The width of the brush is then narrow enough to ensure sufficient maneuverability of the device but also to completely eliminate the overhangs in the edge area.

A symmetrical arrangement of the bristle bundles with bristles on the cylinder in a first embodiment of the roller brush ensures a uniform cleaning effect of a surface. As an alternative to the symmetrical arrangement, in a second embodiment a helical filling of the cylinder with the bundles of bristles may be provided, which advantageously contributes to the fact that the dirt of the surface to be cleaned is laterally conveyed away from the separating edge, in particular brushed away. In a particularly preferred embodiment it is provided that the

Cutting disc made of stainless steel and has a material thickness in the range 0.5 mm to 3 mm, preferably 0.6 mm to 2 mm, in particular 0.8 mm to 1, 5 mm. A sufficient stability of the disc is given from a thickness of 0.5 mm, which is why the lower limit for the thicknesses of the discs is 0.5 mm. In general, the thinner the disk, the better it penetrates the ground. This is due to the fact that surprisingly, similar to a spade, the disc pushes through the rotation and the weight of the device in the ground. This is difficult with a thick disk of, for example, 3 mm and more. To ensure that such thick slices penetrate sufficiently into the ground, a toothing would have to be present, similar to a circular saw. For safety reasons, such a toothing should be avoided. Therefore, the discs are selected in a thickness range of 0.5 mm to 3 mm. Despite the wear of the disc in the cutting area remains the

Cutting effect obtained by the constant thin material thickness of less than 3 mm.

In a particularly advantageous embodiment, the cutting disc has a circumference which is circular.

The disc, which serves as a cutting tool, can be designed differently. Thus, it is possible in a first embodiment that the circumference of the circular cutting edge is formed blunt, whereby the risk of accidents is significantly reduced.

The cutting behavior is inventively improved in that distributed over the circumference of the disc in the radial direction according to the invention multiple slots are provided. Because of this cutting edge geometry and the slice thickness, preferably in the specified range of 0.5 mm to 3 mm, the risk of injury to the operator in case of unintentional contact with the rotating cutting disc at a consistently high efficiency of the cutter is low. In particular, the high efficiency despite the

introduced disc was surprising. A disadvantage of conventional

Cutting discs and cutting teeth over the invention

Cutting discs is that cutting teeth and cutting bars can break out larger stones in the edge area of stones or concrete foundations. These stones can fly around uncontrollably. Such stones or

Cutting disc parts are then a danger to the operation This danger is with the previously executed design of a thin cutting disc with

Slitting, kept to a minimum.

The cutting disks known from US 4,979,573 B and US 2,826,889 B, on the other hand, are equipped with teeth, so that a sawing action takes place. This will especially smaller stones in the processing

thrown out, and there is a high risk to the operator.

Blunt cutting discs have become known from US 4,046,200. These cutting discs have no cutting, but rather a pressing

Effect. Those known from US 4,979,573 B and US 2,826,889 B known

Cutting discs have a sawing or milling action on wide discs. In the shape of the projections as shown in US 4,979,573 B and US 2,826,889 B, particles from the soil, similar to a wooden circular saw, the wood chips are carried out. If the width of the disc is greater than disclosed in US Pat. No. 4,979,573 B, a milling treatment can also be assumed. Blunt cutting discs have the disadvantage that they require more effort to share the floor similar to a spade.

Due to the narrow slits according to the invention with a width of 1 to 3 mm in the cutting disc is to be assumed by a cutting action, however, the force compared to the unslotted disc is much lower.

Slots with a depth of, for example, 20 are preferred on the circumference 12 mm evenly distributed. The number of slots is only an example.

Of course, more, z. B. 24 slots or less, z. B. six slots, be provided. The depth of the slots is in the range 5 to 50 mm. The alignment is centric to the center of the cutting disc. The preferred width of the slots is about 2 mm, the depth 18 mm. To reduce the mechanical stresses in the slot bottom, a circular cutout with a diameter of 5 mm is provided. With a maximum slit width of 3 mm prevents particles and stones from the kerf

be ejected, which can be dangerous for the operator. However, the slit width of the disc has a lower limit of 1 mm. If the slit width is below the lower limit of 1 mm, then the behavior of the disc is equal to that of a closed disc, which is difficult to penetrate into the soil compared to a slotted disc. The depth of the slot is in the range 10 mm to 25 mm. Particularly preferably, the depth of the slots is 16 mm to 22 mm, preferably 18 mm. With a depth of 18 mm could the best

Results are achieved. Deeper slots have a negative effect on the stability of the cutting disc. At 18 mm is a compromise of good

Cutting behavior and high stability of the disc given. It is particularly preferred if the cutting disc can be exchanged. This is particularly advantageous when a lawn edge is processed. Then the device can be led to the end of the surface to be machined, which is possibly limited by a wall or house wall. The from the

US 4,979,573 B and US 2,826,889 B known

Grass edge cutting devices hinder by a stem, an impeller and a protective housing near the edge of a house wall or an adjacent wall. In the opposite direction is in these

Lawn edge cutting devices the distance significantly larger, as by the operating beam or the handle and the operator himself the distance to the

adjacent wall or wall is significantly larger. In the

However, lawn edge cutting device of the invention, it is possible to rotate the machining direction by 180 °. These are only cutting disc and brush roller to exchange in position, which is easily possible according to the invention. The device can then work in the opposite direction to an adjacent wall or wall, the lawn edge. The well-known from the prior art lawn edge cutter consisted of only one

Cutting element and a rotating on the same shaft brush, so that only in one direction, the lawn edge could be edited. The consequent restrictions on editing are determined by the

Device according to the invention avoided. In principle, it is possible with the device according to the invention that the

Cutting disc on the motor side and the brush facing away from the engine is arranged or vice versa. The user can thus control his direction of movement as well as the guidance of the device along a path or on the lawn itself

determine. Furthermore, an arrangement with the motor side offers

Cutting disc the possibility of laying on a wall or a wall

Free paving stones from overhangs. Here is a slight, preferably tool-less interchangeability of cutting disc and brush advantageous.

Another advantage of the invention is the easy disassembly of the rotating components as well as the replacement of the cutting disc and the brush roller.

By loosening a hexagon socket screw, all components sitting on a shaft can be removed without, for example, having to remove the protective cover. The assembly is carried out in reverse order, cutting disc and brush roller can be exchanged. This also allows easy cleaning of the individual components.

In order to optimize the cutting action as a function of the soil quality, it can be provided in a further developed embodiment that projections, for example in the form of points or rectangles, are provided on the circular circumference of the cutting disc; in particular, these can also be provided in addition to the slots. Both through the projections and through the slots, the cutting effect is significantly improved with circular geometry of the cutting disc.

In a particularly advantageous embodiment of the central aperture is circular and larger in diameter than the hexagonal guide

Brush roller. In this way, it is avoided that the cutting disc canted when placing on the hexagonal pin and the assembly is difficult. The power transmission takes place in such an embodiment via four mounted on the annulus grooves. The flange for receiving the cutting disc has a short run-up slope and has the four on the circular arc

attached grooves. The cutting disc can thus be pushed easily and without tilting on the flange.

The diameter of the cutting disc is preferably between 100 mm to 250 mm, in particular 120 mm to 150 mm, most preferably 150 mm. It is particularly preferred if the brush, in particular the roller brush and the cutting tool, in particular the cutting disc on one and the same shaft, which can be driven for example by an electric motor, are arranged side by side. The juxtaposition of the roller disc to the cutting disc ensures that the brush roller rotates on the stone surface at the edge to the transition and overhangs and moss are eliminated. The diameter of the cutting disc should be as small as possible to ensure good maneuverability of the device. In particular, with larger diameters, the cutting disc also tends to lock up due to unintentional tilting of the device by the user. On the other hand, however, it must be ensured that the penetration depth is still sufficient to

cut average overhangs deep enough. A

Penetration depth of 25 cm showed in the garden all in all the best results. This results in a total diameter of the disc in the range 120 mm to 180 mm, in particular at 150 mm. Such a disc has sufficient maneuverability and does not tend to jam. It is particularly preferred if the cutting disc is not made of stainless steel, but of spring steel. The material thickness of the cutting disc is in the range of 0.5 to 3 mm. It is particularly preferred if the disk has a thickness of 0.6 to 2 mm, preferably 1 mm.

It is particularly preferred if the edge cutting device, as described above, in the form of a module in a hand-held device, the

in particular serves as a cleaning and care device, is used and operated by means of this hand-held device. The hand-held device comprises a drive system as a motor, in particular an electric motor with gear that acts on a shaft. Preferably, the shaft of the electric motor is identical to the shaft of the lawn edge cutting device, which is used as a processing device of the hand-held device. The hand-held device preferably has an axially arranged motor, in particular electric motor, with a

Speed of about 500 to 2000 revolutions per minute, the roller brush and the cutting disc drives. Particularly preferred is the number of

Revolutions 1600 rpm. The electric motor of the hand-held device can be operated both mains-powered and autonomously, i. with the help of a battery, a rechargeable battery or an internal combustion engine.

It is particularly preferred if the hand-held device not only a single processing device, for example, the previously described

Lawn edge cutting device, but also includes a second

Processing apparatus, wherein the first processing device, i. the lawn edge cutter, against a second processing device,

For example, a brush roller or a joint brush, can be replaced. Particularly preferably, the replacement is done without tools. Such a hand-held cleaning and care device with exchangeable modules is shown, for example, in WO 2016/008763, the disclosure content of which is fully incorporated in the present application. The invention will be described below without limitation on the basis of

Drawings are described.

Show it:

1 a shows components of a lawn edge cutting device according to the invention;

Fig. 1 b alternative embodiment of a cutting disc and attachment of

Cutting disc;

FIG. 2 shows a lawn edge cutting device according to the invention, mounted on a hand-guided device in use; FIG.

2a shows a lawn edge cutting device according to the invention, mounted on a hand-held device with brush motor side.

2b shows a lawn edge cutting device according to the invention, mounted on a hand-held device with cutting disc on the motor side; Fig. 3a -3g different types of cutting discs;

4a-4c, a first embodiment of a roller brush;

5a-5c show a second embodiment of a roller brush;

Fig. 6a-6d different views of a hand-held device

with inventive lawn edge cutting device.

In Figure 1 a, the items of a first embodiment of a

Lawn edge cutting device 1 according to the invention shown. The

Lawn edge cutting device comprises as a cutting tool

Cutting disc 10, which has distributed over its peripheral surface 12 slots 14. Preferably, the disc 10 is made of stainless steel and has a thickness of 1 mm. The disc 10 is held with a flange 1 1 with hexagonal pin 16 on the shaft 18 of a drive device, both the brush 20 as the

Cutting disc 10 receives. The hexagonal pin 16 engages in one

Hexagonal opening 17 of the cutting disc 10 a. The drive device comprises a motor. The connection to the engine is ensured by a header housing. Preferably, the motor is an electric motor acting on the shaft 18. Preferably, the drive device of the

Further also a transmission. The brush 20 is attached like the cutting disc on the hexagonal pin of the flange. Another hexagonal pin serves as a support for the clamping screw 22, which is bolted to the shaft 18. In order to avoid that in the application case grass material impinges on the operator, it is provided to cover both brush 20 as cutting disc 10 with a cover 40. Contrary to the drive direction, the cover 40 has a

Ejection stop 42.

Figure 1 b shows an alternative embodiment of a

Lawn edge cutting device 1001, in which the items are shown. The same components as in Figure 1 a are marked with reference numbers increased by 1000. The most important difference from that shown in Fig. 1 a

Lawn edge cutting device 1 is the embodiment of the cutting wheel 1010. The cutting wheel 1010 has a slightly different configuration of the slots relative to the cutting wheel 10 of FIG. 1a. This is evident in particular from FIG. 3g. Compared with the variant shown in FIG. 1 a, the central aperture 1017 in the circular disk is circular and larger than the one

Hexagonal guide of the brush roller. The power is then transmitted via four mounted on the annulus projections or grooves. The flange 101 1 comprises a screw-side flange 1016 for receiving the cutting disc with a short ramp and has twelve grooves mounted on the arc, as shown in Figure 1 b. The flange 101 1, in addition to the screw-side flange 1016 also includes an opposite

drive-side flange 1 1 16. The drive-side flange 1 1 16 has in Unlike the screw-side flange 1 1 16 only four grooves. The cutting disc can thus be pushed easily and without tilting on the flange. In the embodiment according to Figure 1 a, however, the openings of the cutting disc and the brush roller are identical. As a result, there is a risk that when placing the cutting disc this can tilt due to the tolerances on the hexagonal pin of the flange. This is avoided in an embodiment of the breakthrough according to Figure 1 b.

Figure 2 shows a device 50 which is formed as a hand-held device with a handle 52 and a handle 54, at one end of the handle 52, a housing 56 is arranged, which receives a motor, preferably an electric motor, with a transmission. The electric motor accommodated in the motor housing 56 acts on the shaft of the lawn edge cutting device, which is designated by 18 in FIG. 1a, and drives the lawn edge cutting device in such a way that the cutting disk is set in rotation, as well as the adjacent one

Brush. Shown in Figure 2 is the use of the handheld device with a cutting device for clean and straight cutting along a lawn edge 70, which on the one hand of a plate surface 72 as from a

Grass area 74 is limited. In Figure 2, the cutting disc 10 is arranged on the motor side. The construction makes the brush roller and cutting disc interchangeable. This means that the cutting disc can be arranged either on the motor side and the brush roller facing away from the engine or vice versa, d. H. that the brush roller is arranged on the motor side and the cutting disc facing away from the motor. The user can use it

Determining the direction of movement and the guidance of the device on the way or on the lawn itself. Furthermore, the arrangement with the motor-side cutting disc as shown in Figure 2b offers the possibility to remove 100 laid paving stones 102 on a wall or a wall of the overhangs. Figure 2a shows the application with motor-side brush assembly, as used for example when cleaning paths. In FIGS. 2a and 2b, the brush is denoted by 20, the cutting disc by 10 and the motor housing by 56. Figures 3a to 3g show different embodiments of the cutting wheel 10, as it can be used in a lawn edge cutting device used. All cutting discs 10 essentially have a circular

Extent on and made of steel, preferably spring steel or else

Stainless steel. While stainless steel is distinguished by freedom from rust, spring steel is not resistant to rust, but has a significantly higher dimensional stability with the same material thickness as stainless steel. If the dimensional stability of the cutting disc is in the foreground, it is therefore preferable to manufacture the cutting disc made of spring steel. While the circular disk 10 according to FIG. 3a is formed blunt, according to the invention the disk 10 according to FIG. 3b has a multiplicity of slots 14 and is designed analogously to FIG. 1a. In addition to the

Slits 14, which improve the cutting action in circular geometry embodiments of a circular disc 10 with projections or

Be provided tips. However, the tips are abraded by the increased wear on contact with stones after a short time. The best results are achieved with thin grinding wheels. It is particularly preferred if the cutting disc is provided with slots 14. This is due to the fact that with cutting discs that are equipped only with teeth, smaller stones are thrown out during processing, which is a high risk to the operator. Dull

Cutting discs avoid this disadvantage because they have more oppressive effect. However, blunt cutting discs require more effort to share the ground, much like a spade does. By the invention

Design of the disc with slots, in particular narrow slits with a width of 1 to 3 mm, in particular 2 mm, a cutting action is given, however, the force compared to the unslotted disc is much lower. Furthermore, a hazard to the operator is avoided by ejected foreign objects such as stones. The depth of the slots is between 5 and 50 mm, preferably 18 mm. The number of slots is 12, without being limited thereto. The width of the slots is 2 mm and the depth 18 mm. With a maximum slot width of up to 3 mm, no particles and stones are ejected from the kerf, which can be dangerous for the operator.

The cutting disc is preferably made of spring steel. The material thickness of the cutting disc is in a range of 0.5 to 3 mm, preferably the thickness of the cutting disc is 1 mm. The diameter of the disc is between 100 and 250 mm. Preferred discs have a diameter of 150 mm.

Figure 3c shows a disc 10 with rectangular projections 100 which are distributed over the circumference. In an embodiment of a circular disk 10 according to FIG. 3d, the projections in a rectangular shape are alternatively shorter and are designated 102. FIGS. 3e and 3f show circular disks 10 with tips 104 and 106, respectively.

FIG. 3g shows a special embodiment of a cutting disk 10. The cutting disk shown in FIG. 3g has modified slots 1014 in comparison with the embodiment in FIG. 3b. The slots 1014 are elongated notches with spacers 1015, preferably circular, which are in the interior of the

Cutting disc 1010 are directed into it. As a result, the mechanical stress in the slot bottom and thus the risk of breakage under high load is significantly reduced. The width of the slots 1014 is about 2 mm, the depth about 20 mm. The aperture 1017 in the circular disc 1010 is circular and larger than the hexagonal guide of the brush roller. The power transmission takes place via four inwardly directed cams. The advantage of this type of breakthrough with the four cams is good power transfer from the flange to the 1mm thin disc. In a hexagonal pin would be expected due to the thin cutting disc with increased wear on the hexagon. In addition, the mounting of the cutting disc without the risk of tilting on the

Hexagonal pin in such an embodiment possible. In the figures 4a to 4c, a first embodiment of a next to

Cutting disc arranged brush 20 shown. Figure 4a is a side view of a brush 20 comprising a roller on which a plurality of bristle bundles 204 are arranged. While Figure 4a shows a side view, Figure 4b shows a view from the front, along the section A-A in Figure 4a.

In Figure 4b clearly visible is the roller body having a diameter of 50 mm. Inserted into the roller body 202 is a bore 210 in which the flange 16 from FIG. 1 engages and sets the roller brush in rotation. Overall, distributed over the roller body, as shown in Figure 4c in plan view, a plurality of bristle bundles arranged side by side. The individual bristle bundles are identified by reference numeral 204. The

Bristle bundle has a variety of bristles with a thickness of 1 mm to 1, 5 mm. As can be seen from FIGS. 4 a to 4 c, in the illustrated embodiment, the bristle bundles are regularly distributed in rows over the roller body 202.

FIGS. 5a to 5d show an alternative embodiment of a roller brush with respect to the embodiment, as shown in FIGS. 4a to 4c. The

Roller brush 300 according to FIGS. 5a to 5c again comprises bundles of bristles 204 which, however, as shown in FIGS. 5a to 5c, are arranged spirally. A helical arrangement according to the figures 5a to 5c has the advantage that

Dirt of the surface to be cleaned laterally from the separating edge

brush away. The diameter of the roller brush is again 50 mm, the width of the roller brush 50 mm. The diameters of the bristles of the

Bristle bundles are again 1 mm to 1, 5 mm. The rows of bundles of bristle spirally arranged at a greater distance allow better removal of large and thick overhangs. Although tight bundles of bristles have a longer life; By contrast, the brushes with a wide gap between the rows of bristle bundles are easier to clean. FIGS. 6a to 6d show the different views of a handheld device 50 comprising an edge cutting device according to the present invention. The lawn edge cutting device is arranged on one side of the handheld device and designated 1.

The lawn edge cutting device is driven by an electric motor with gear arranged in the housing 56. The opposite side of the hand-held device for lawn edge cutting device comprises a

Guide wheel 58. Preferably, the Rasenkantenschneidvornchtung on the shaft of housed in the housing 56 electric motor is mounted interchangeable with gear and can, for example, a roller brush or a

Joint brush, as described in WO 2016/008763 A2, preferred

exchanged without tools. In particular, it is possible that the

Lawn edge cutting device can be dismantled by simple release by the operator and replaced with another second processing device.

With the invention, a lawn edge cutting device is for the first time specified, which is designed as a lawn edge cutting module and without tools on a

hand-held device can be applied, wherein the hand-held device with an axially arranged motor drives the Rasenenkantenschneidvornchtung with speed of 500 - 2000 revolutions. The impeller lying on the opposite side of the lawn edge cutting device runs along and is not driven. The system according to the invention is characterized in that the brush roller rotates on the side surface of the edge to the transition and the

Cutting disc at this edge penetrates into the ground. The brush roller is used to guide the handheld device, a certain depth of penetration

To ensure cutting disc and on the other hand to clean the edge of the stone from the grass overhangs and mosses. By the special

Design of the cutting disc is prevented that particles and / or stones ejected from the kerf and so the operating personnel is endangered.

Claims

claims

1 . A lawn edge cutting device (1) comprising

a cutting tool and a drive device with a

Wave (18),

characterized in that

the lawn edge cutting device (1) comprises a cleaning tool, preferably a brush (20), in particular a roller brush, which is arranged next to the cutting tool, preferably on the shaft (18) and the cutting tool is a circular disk (10) which extends over the Circumferentially distributed slots comprises.

2. Lawn edge cutting device according to claim 1,

characterized in that

the slots have a width and a depth.

3. lawn edge cutting device according to claim 2,

characterized in that

the width of the slots in the range 1 to 5 mm, preferably 1 to 3 mm, in particular 1, 5 to 2.5 mm and / or the depth of the slots in the range 5 to 50 mm, preferably 10 to 30 mm.

4. lawn edge cutting device according to one of claims 1 to 3,

characterized in that

the cutting disc has a material thickness in the range 0.5 mm to 3 mm, preferably 0.6 mm to 2 mm, in particular 0.8 mm to 1, 5 mm.

5. lawn edge cutting device according to one of claims 1 to 4,

characterized in that

the cutting disc on the circular circumference projections in the form of particular of tips (104, 106) or rectangles (100, 102).

6. lawn edge cutting device according to one of claims 1 to 5, characterized in that

the cutting disc (10) has a diameter, in particular a diameter in the range 100 mm to 250 mm, in particular 120 mm to 150 mm.

7. Lawn edge cutting device according to one of claims 1 to 6,

characterized in that

the brush (20), in particular the roller brush, bristle bundles with bristles (204) having a bristle diameter between 0.5 mm and 2.0 mm, preferably 1, 0 mm to 1, 5 mm preferably comprises polyamide.

8. lawn edge cutting device according to one of claims 1 to 7,

characterized in that

the brush (20), in particular the roller brush, has a width preferably 20 mm to 100 mm, preferably 30 mm to 80 mm and / or a diameter in the range 50 mm to 200 mm, in particular 80 mm to 150 mm.

9. Handheld device (50), in particular cleaning and care device with a drive device, comprising a motor, in particular an electric motor, and preferably a transmission and at least one

Processing device,

characterized in that

the at least one processing device a

The lawn edge cutting device (1) according to any one of claims 1 to 8 and the motor drives the shaft (18) of the lawn edge cutting device.

10. Handheld device (50) according to claim 9,

characterized in that

the handheld device (50) at least two processing devices, a first processing device and a second

Processing apparatus, wherein the first processing device a lawn edge cutting apparatus (1) according to any one of claims 1 to 8 and first and second processing apparatus are adapted to be drivable interchangeably on the shaft (18) of the drive apparatus.

1 1. Handheld device according to claim 10,

characterized in that

the first processing device is a lawn edge cutting device according to one of claims 1 to 8.

12. Hand-guided device according to one of claims 10 to 1 1,

characterized in that

the second processing device is a brush.

13. Hand-held device according to one of claims 1 1 to 12,

characterized in that

the lawn edge cutting device is arranged on the motor side.

14. Handheld device according to claim 12,

characterized in that

the brush is arranged on the motor side.