DE20021721U1 - Lawnmower with integrated multiple functions - Google Patents

Description

85 662 p/agh

William F. Czeban

Kandinsky Street 9

D-74653 Künzelsau

Lawn mower with integrated multiple functions

Technical area

The invention relates to a lawn mower with a cutting device for cutting grass and other plants.

Due to the wide variety of requirements for lawn mowers resulting from different climatic conditions, different types of lawn and different habits in terms of cutting length and corresponding time intervals between mowing, there is a need for a lawn mower that can be used in a variety of ways. Depending on your wishes and the condition of the lawn, it is necessary that the cut grass is either collected during the mowing process or used for mulching.

State of the art

Although there are lawn mowers that allow both collection and mulching, this requires complex and laborious conversion work on the known lawn mowers.

Description of the invention

The invention is based on the technical problem of providing a lawn mowing device by means of which several functions can be carried out in an integrated manner using simple means, without the need for complex and laborious conversion work.

This technical problem is solved by a lawn mowing device having the features of claim 1.

According to this invention, the cut grass is conveyed by a cutting device via an ejection channel into a grass catcher, which can be used to collect the cut grass and, thanks to an adjustable opening, is also suitable for emptying the grass catcher and for mulching. These different functions of the grass catcher are ensured by the adjustability or adjustability of the opening of the grass catcher.

To collect the cut grass, the opening is closed or is in a position that allows the cut grass to be collected in the grass collection container. To empty the grass collection container, the opening is adjusted so that the cut grass falls out of the grass collection container or can be removed from it. For mulching, it is also necessary that an opening is created on the grass collection container or that it is positioned so that the cut grass is returned to the lawn. When mulching, the cut grass is preferably ejected from the lawn that has just been cut onto the cut grass.

Due to the adjustable opening of the grass catcher, it is therefore possible for a lawn mower to perform several functions in an integrated manner, namely collecting the cut grass, emptying the grass catcher of the cut grass and discharging mulch to fertilize the mown lawn, without the need for complex conversion work, such as laborious assembly and/or disassembly of individual elements. This provides a lawn mower with integrated multiple functions that is suitable for different climatic requirements as well as for different lawn mowing habits and needs. As a result, the lawn mower according to the invention can be offered to a universal market regardless of country-specific requirements. Therefore, on the one hand, the number of lawn mowers according to the invention can be increased to reduce costs and, on the other hand, the end user receives a lawn mower with advantageously integrated multiple functions.

Further advantageous embodiments emerge from the subclaims. An opening part of the grass catcher can be moved from a first operating position to a second operating position in such a way that the opening of the grass catcher is created. In the first operating position, the adjustable opening is covered by the opening part in order to enable the cut grass to be collected in the grass catcher. In the second operating position, the adjustable opening is formed by a change in the position of the opening part from the first operating position in order to enable the mulch to be discharged through the resulting opening of the grass catcher.

It is also advantageous if the opening part can be locked in the second operating position. This means that

The operating personnel do not have to carry out any further activities during mulching in order to set the opening of the grass catcher in the second operating position.

Advantageously, the opening part forms at least part of the bottom of the grass catcher in the first operating position. This results in mulching without a significant amount of the cut grass accumulating in the grass catcher. This leads to even mulching of the mown lawn.

Furthermore, it is advantageous if the opening part can be pivoted about a horizontal pivot axis between the first operating position and the second operating position.

Preferably, the pivot axis runs transversely to the direction of movement of the lawn mower, so that the opening part is pivoted in the direction of movement of the lawn mower for mulch discharge. This has the advantage that the width of the lawn mower does not increase due to the pivoted opening part.

Furthermore, it is advantageous if the pivot axis is mounted in a positionally adjustable manner in order to enable both pivoting and relocation of the entire opening part.

Preferably, the pivot axis is mounted so that it can be moved between two end positions when the opening part is in the second operating position. This allows the opening part to be brought into a suitable or desired position during mulch discharge.

If the swivel axis can be moved between the two end positions in the direction of the ejection channel, the

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The opening part can be moved to the area directly above the grass catcher. The overall length of the lawn mower does not increase significantly due to the pivoted opening part, so that maneuvering the lawn mower around trees and bushes is not impaired or restricted by the pivoted opening part.

Furthermore, it is advantageous if the pivot axis can be moved via two parallel sliding guide parts, each of which is arranged in the area of the side walls of the grass catcher.

If the pivot axis can be locked in one of the end positions at least by a quick-release fastener, the position of the opening part in the second operating position can be both quickly fixed and quickly released on at least one sliding guide part.

Furthermore, it is advantageous that the sliding guide parts limit the opening movement of the opening part in one end position of the pivot axis via a stop arranged on the opening part and prevent the closing movement of the opening part in the other end position of the pivot axis.

According to a further advantageous embodiment of the invention, the stop rests with one contact point on at least one sliding guide part in one end position of the pivot axis and with at least two contact points on the sliding guide part spaced apart in the direction of displacement of the opening part in the other end position of the pivot axis. Thus, the stop advantageously limits the opening movement of the opening part in one end position of the pivot axis and prevents the closing movement of the opening part in the other end position of the pivot axis.

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A further advantage of the invention is based on the fact that the stop has a curved surface that interacts with the sliding guide part, such that the two contact points in the direction of displacement of the opening part form the two ends of the curved surface and the opening part can therefore be pivoted about the pivot axis in one end position of the pivot axis with the sliding guide part with the at least one contact point and/or the curved surface remaining in engagement. The curved surface of the stop thus ensures that the closing movement of the opening part is prevented and that the opening part can be pivoted in an advantageous manner about the pivot axis.

Advantageously, a deflection device for the cut grass is arranged downstream of the outlet of the discharge channel. This allows the cut grass to be guided into the grass collection container in a manner determined by the deflection device.

Preferably, the deflection device is arranged in the upper area of the grass catcher so that the grass catcher can be filled up to the deflection device at most. It is also advantageous if the deflection device at least partially forms the upper wall of the grass catcher. As a result, the grass catcher with the integrated deflection device has a reduced number of components. This leads to a reduction in costs when manufacturing the grass catcher.

If the deflection device is designed to extend in a fan shape from the outlet of the discharge channel in the direction of grass discharge, the cut grass can be distributed by the deflection device according to the fan shape in such a way that the cut grass spreads more transversely to the direction of grass discharge.

can spread out. On the one hand, this leads to better filling of the grass catcher, since the cut grass does not collect in the middle of the grass catcher, but is distributed in an advantageous manner over the entire width of the grass catcher right into the corners. This increases the maximum grass intake of the grass catcher. On the other hand, the fan-shaped deflection device leads to a more even fertilization of the lawn through the mulch discharge when the opening part is in the second operating position. If the deflection device has grass guide bars extending from the outlet of the discharge channel, the course and arrangement of which are adapted to the fan-shaped extension of the deflection device, this results in a further improved even distribution of the cut grass across the direction of grass discharge, with the advantages mentioned above.

Preferably, the downstream end of the deflection device is inclined downwards when installed in order to redirect the cut grass both for mulching and for collection in the grass catcher.

Furthermore, the downstream end of the deflection device preferably has a relatively large downward transition radius so that the cut grass is redirected downwards without an abrupt change of direction.

In addition, the downstream end of the deflection device is inclined downwards over a relatively small extent according to an advantageous embodiment. This means that the deflection device has a short overall length in order to be accommodated in a suitable manner in the grass collecting container and to ensure an advantageous even distribution of the cut grass during mulching.

Furthermore, it is advantageous if the cutting device has two cutting blades, the inlet of the discharge channel being arranged between the two cutting blades, and the inlet of the discharge channel being able to be blocked by means of a mulching plug device. The mulching plug device can be used to provide additional mulching directly in the area of the cut grass.

Advantageously, the mulching plug device can be installed and removed from there by means of an insertion device through the opening of the grass catcher and the discharge channel in front of or in the inlet of the discharge channel. The mulching plug device can therefore be installed without the use of additional tools and without removing or dismantling components of the lawn mower. This is particularly advantageous for heavier lawn mowers and lawn mowers with an integrated driver's seat, since the lawn mower can only be accessed from below with considerable effort.

Preferably, the mulching plug device has sliding surfaces pointing downwards when installed in order to prevent the cut grass from clumping on the mulching plug device.

It is also advantageous if the cutting blades each have at least one grass blade and at least one additional blade that is arranged above the grass blade. Mulching can thus be improved in quality by repeatedly cutting the cut grass using the additional blade. This leads to finely chopped cut grass that, due to its small size, can settle directly on the ground between the remaining blades of grass, which leads to improved fertilization.

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Short description of the drawings

For further explanation and better understanding, several embodiments of the invention are described and explained in more detail below with reference to the accompanying drawings. They show:

Fig. 1 is a schematic side view of an embodiment of the lawn mowing device according to the invention in the first operating position;

Fig. 2 is a schematic, partially sectioned plan view of the lawn mowing device of Fig. 1;

Fig. 3 is a schematic side view of the lawn mowing device of Fig. 1 in the second operating position;

Fig. 4 is a perspective view of the deflection device of the lawn mowing device according to the invention;

Fig. 5 is a schematic view of the deflection device of Fig. 4 seen from below;

Fig. 6 is a perspective view of a grass catcher according to a second embodiment of the lawn mowing device according to the invention;

Fig. 7 is a side view of the grass catcher of Fig. 6 in the first operating position;

Fig. 8 is a side view of the grass catcher of Fig. 6 in the second operating position;

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Fig. 9 is a side view of the grass catcher of Fig. 8 with the opening part in a different end position in the second operating position;

Fig. 10 is a sectional view of the cutting device with inserted mulching plug device according to the invention; and

Fig. 11 is a schematic side view of a lawn mowing device according to the invention, illustrating the insertion of the mulching plug device by means of an insertion device.

Description of preferred embodiments of the invention

Fig. 1 shows an embodiment of a lawn mowing device according to the invention, which has a vehicle body with a driver's seat 11 and wheels 12. A cutting device 20 for cutting grass and other plants is arranged on the vehicle body 10 and is connected to an inlet 31 of an ejection channel 30 for transporting the cut grass away. The ejection channel 3 also has an outlet 32, which in turn is connected to a grass collecting container 40. The grass collecting container 40 has a deflection device 50 which deflects the cut grass 42 downwards so that it collects in the bottom area of the grass collecting container, as shown by the arrow.

Furthermore, the grass catcher 40 has a lever 43, by means of which an opening part 44 of the grass catcher can be pivoted about a pivot axis 45 in such a way that an opening 46 is created as shown in Fig. 3. In Fig. 1, the opening part 44 is in a first operating position in which the opening part 44 closes the opening 46 of the grass catcher 40. The opening part forms the bottom and the rear wall of the

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Grass catcher 40. Thus, the grass cut by the cutting device 2 0 is transported via the ejection channel 3 0 into the grass catcher 4 0, which collects the cut grass 42 in its first operating position during the mowing process.

It should also be mentioned that the cutting device can be adjusted in height to mow different lengths of grass. As a result of adjusting the height of the cutting device 20, the discharge channel 30 can move both vertically and horizontally in order to remain in contact with the grass catcher 40.

In Fig. 2, the lawn mowing device according to the invention is shown schematically in section from above. The cutting device 20 has two cutting chambers 21, in each of which a cutting blade shown in Fig. 10 is accommodated. The inlet 31 of the discharge channel 30 is arranged between the two cutting chambers 21. Following the outlet 32 of the discharge channel 30, the deflection device 50 is arranged, which is accommodated in the upper area of the grass collecting container 40 or forms the upper area of the grass collecting container 40.

In Fig. 3, the lawn mowing device according to the invention from Fig. 1 is now in the second operating position, in which the opening part 44 of the grass collecting container 40 is pivoted about the pivot axis 45 in such a way that the opening 46 of the grass collecting container 40 is formed, which is suitable for emptying the grass collecting container 40 and for mulching. In this second operating position, the cut grass is now transported via the throwing channel 30 and the deflection device 50 in the direction of the arrow, wherein the cut grass in the second operating position is no longer collected in the grass collecting container 40, but falls downwards out of the grass collecting container through the opening 46.

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During mulching, the cut grass is ejected or thrown backwards in the direction of movement of the lawn mower.

The opening part 44 is pivoted from the first to the second operating position by the operating personnel sitting on the driver's seat 11 by operating the lever 43, so that the grass catcher 40 can be emptied after the mowing process or so that the grass catcher 40 can be used to discharge mulch during the mowing process. In order to avoid having to operate the lever continuously during the mowing process, the opening part 44 can be locked in the second operating position. The locking can be achieved in particular by a spring-loaded locking device.

During mulching, the deflection device 50 serves to ensure that the cut grass can be evenly distributed over a large area in order to ensure beneficial fertilization of the mown lawn.

An advantageous embodiment of the deflection device 50 according to the invention is shown in perspective in Fig. 4. The deflection device 50 is designed to be fan-shaped and widened from the outlet 32 of the discharge channel 30 in the direction of grass discharge. Furthermore, the deflection device has grass guide webs 55 extending from the outlet 32 of the discharge channel 30. These grass guide webs 55 are adapted to the fan-shaped widening of the deflection device 50 in terms of their course and arrangement. In addition, the downstream end 52 of the deflection device 50 is inclined downwards in the installed state, as shown in Figures 3 and 1. The downstream end 52 of the deflection device also has a relatively large transition radius 51 downwards in order to deflect the cut grass downwards without abrupt changes. In addition, the downstream end

the deflection device 50 is inclined downwards over a relatively small extent in order to minimize the overall length of the deflection device 50. Furthermore, the deflection device 50 has a cheek 56 on each side which prevents the cut grass from spreading transversely to its direction of movement beyond the deflection device 50.

In Fig. 5, the deflection device is shown looking from below. The arrows show the effect of the grass guide bars 55 with regard to the even distribution of the cut grass transversely to the direction of movement of the lawn mower or the direction in which the cut grass is ejected. The number of grass guide bars 55 can vary, as can the length of the individual grass guide bars 55. However, it should be noted that the deflection device 50 with the grass guide bars 55 ensures an advantageous even distribution transversely to the direction of movement of the lawn mower both when mulching and when collecting the cut grass in the grass collection container 40.

In Figures 6 to 9, a further embodiment of a grass collecting container 140 according to the invention is now explained. The structure of the second embodiment of the grass collecting container 14 0 corresponds to that of the first embodiment of the grass collecting container 4 0 of Figures 1 and 3, but the second embodiment of the grass collecting container 140 additionally has two parallel sliding guide parts 70, which are each arranged in the area of the side walls of the grass collecting container 14 0. Identical elements are designated with reference numerals identical to those in the first embodiment in Figures 6 to 9, and further additional elements of the second embodiment are explained in more detail below. The two sliding guide parts 70 are also designed such that the pivot axis 45 is mounted in the sliding guide parts 70 in a positionally adjustable manner. In particular, the

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Sliding guide parts 70 have an elongated hole so that the pivot axis 45 can be moved between two end positions 145, 245 in the direction of the ejection channel 30.

In Fig. 6, the opening part 44 is in the first operating position, in which the opening part 44 closes the opening 46 of the grass collecting container 140. It should be noted, however, that the grass collecting container 140 is shown in Figures 6 to 9 without side walls, which can preferably be constructed from plastic elements or plastic films. Both the grass collecting container 140 and the opening part 44 have struts which form the basic construction of the grass collecting container and to which, for example, the plastic films can be attached.

Furthermore, it can be seen in Fig. 6 that the grass catcher has an inlet opening 48 for receiving the discharge channel 30. Furthermore, the deflection device 50 can have a receptacle 57 for hanging on the discharge channel 30 or on the vehicle body 10.

In Fig. 7, the area of the opening part 44 around the pivot axis 45 is shown in such a way that the sliding guide part 70 partially located behind it is completely visible. In the first operating position shown in Fig. 7, displacement of the pivot axis 45 is prevented by a stop 141 arranged on the opening part 44. The stop 141 has a curved surface 142 which interacts with one end of the sliding guide part 70 in such a way that during the opening and closing movement of the opening part 44, the curved surface 142 remains in engagement with the end of the opening part. The opening and closing movement of the opening part 44 is thus limited by the stop 141 to the one end position 145 of the pivot axis 45.

In Fig. 8, the opening part 44 is now shown in the second operating position after the opening movement, so that the opening 46 is created for emptying the grass catcher or for mulch discharge. Two contact points 143 of the stop 141 now rest on the upper side of the sliding guide part 70, which form the two ends of the curved surface 142. From this one end position 145 of the pivot axis 45, the opening part 44 can be moved in the direction of the discharge channel 30. The pivot axis 45 slides in the elongated hole in the sliding guide part 70. During this displacement of the opening part 44 and in the other end position 245, the closing movement of the opening part 44 is prevented by the two contact points 143 of the stop 141 resting on the upper side of the sliding guide part 70.

In Fig. 9, the opening part 44 is shown in the second operating position in the other end position 245. In this other end position 245 as well as in the first end position 145 of the pivot axis 45, this can be locked by a quick-release fastener in order to prevent the pivot axis 45 from accidentally moving in the sliding guide part 70. When the pivot axis 45 is locked in the other end position 245 by means of the quick-release fastener, the opening part 44 is located directly above the grass catcher 140, so that this position of the opening part 44 is particularly suitable for mulching. This is due in particular to the fact that the opening part 44 does not significantly increase the length of the grass catcher and thus of the entire lawn mower in the direction of movement. This makes mowing around trees and bushes easier in that the opening part 44 does not get caught on the trees and bushes or cannot get caught in them when going around them.

Fig. 10 shows a sectional view of the cutting device 20 which has two cutting chambers 21. In each of the cutting chambers 21 there is a cutting blade 22

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which is rotatably mounted in the center of the respective cutting chamber 21. The two cutting chambers 21 are disk-shaped and each have two air inlet openings to suck air into the chamber. This creates a tunnel effect so that the cut grass remains briefly in an outer tunnel area of the cutting chambers 21 and is either mulched there or from there reaches the discharge channel 3 0.

The cutting blades 22 each have a grass cutting edge and at least one additional cutting edge 23 which is arranged above the grass cutting edge. The additional cutting edge 23 can be formed by serrated wings 23, as shown in Fig. 10. By means of these serrated wings 23, which are arranged above the grass cutting edge, the cut grass in the cutting chambers 21 is repeatedly cut, so that the already cut grass is advantageously shredded. In order to intensify this repeated shredding of the already cut grass, the inlet 31 of the discharge channel 30 can be blocked by means of a mulching plug device 60. The mulching plug device 60 is thus located between the two cutting chambers 21 and partially forms them by means of a nose arranged in the middle of the mulching plug device 60.

Furthermore, the mulching plug device 60 has a sliding surface 62 pointing downwards at an angle, which is inclined backwards and downwards in the direction of travel in order to prevent the cut grass from clumping. Since the mulching plug device 60 is located in front of the inlet 31 of the discharge channel 30, the sliding surface 62 pointing downwards is arranged in the discharge direction in such a way that the cut grass cannot get into the discharge channel 30 due to the mulching plug device 60. The sliding surface 62 pointing downwards serves as an inclined impact surface onto which the grass thrown up by the cutting blades 23

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cut grass and bounces off it.
These impact effects can break up any clumps that may form. The cut grass then falls from the downwardly inclined sliding surface 62 onto the mown lawn for mulching.

In Fig. 10, an insertion device 65 is shown with the
Mulching plug device 60, which at its end
has a handle 66. With reference to Fig. 11,
described how the mulching plug device 60 is inserted into the lawn mower device by means of the insertion device 65. For this purpose, the opening part 44 of the
Grass catcher 40 in the second operating position
brought to the mulching plug device 60 by means of the
Insertion device 65 through the opening 44 of the
Grass catcher 4 0 and the discharge channel 3 0 in front of the
Inlet 31 of the discharge channel 30 as shown by the dashed arrow with two positions of the
Insertion device 65 with mulching plug device 60
shown. When the mulching plug device 60 is in
installed state, this is partially limited by the nose 61 and the downward-facing sliding surface 62
partially the cutting chambers 21. For this purpose, the
Mulching plug device 60 to corresponding system elements
the cutting device 20. In this position of the
Mulching plug device 60 is a hook 67 of the insertion device
65 is removed from a corresponding hook opening 68 of the mulching plug device 60 and the
Insertion device 65 can be removed from the discharge channel and the opening 44 without the mulching plug device 60 .

If the mulching plug device 60 is now again removed from the
Cutting device 20 is to be removed, the
Insertion device 65 is again inserted through the discharge channel 30 to the mulching plug device 60. Now the hook 67 of the insertion device 65 must be inserted again into the hook opening 68

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be introduced in order to then be able to remove the insertion device 65 together with the mulching plug device 60 through the discharge channel 3 0. The mulching plug device 60 can thus be mounted in front of the inlet 31 of the discharge channel 3 0 by means of the insertion device 65 and dismantled from there.

Furthermore, it is clear to the person skilled in the art that the principle explained above is also applicable to so-called hand lawn mowers without a driver's seat. Furthermore, the lawn mowing device does not necessarily have to have wheels, but can also float on an air cushion.

Thus, a lawn mower is provided with a cutting device 20 for cutting grass and other plants, which is connected to an inlet 31 of a discharge channel 30 for transporting the cut grass, wherein an outlet 32 of the discharge channel 30 is connected to a grass collecting container 40; 140, on which an opening is adjustable such that the opening is suitable for emptying the grass collecting container and for mulching. Thus, due to the adjustable opening 46 of the grass collecting container 40; 140, a lawn mower with several integrated functions is provided, namely collecting the cut grass, emptying the grass collecting container 40; 140 and mulching the cut grass, without the need for complex or laborious conversion work.

Claims (26)

1. Lawn mowing device with a cutting device ( 20 ) for cutting grass and other plants, which is connected to an inlet ( 31 ) of a discharge channel ( 30 ) for transporting away the cut grass, wherein an outlet ( 32 ) of the discharge channel ( 30 ) is connected to a grass collecting container ( 40 ; 140 ) on which an opening ( 46 ) is adjustable such that the opening ( 46 ) is suitable for emptying the grass collecting container ( 40 ; 140 ) and for mulch discharge. 2. Lawn mowing device according to claim 1, characterized in that an opening part ( 44 ) of the grass collecting container ( 40 ; 140 ) can be brought from a first operating position into a second operating position such that the opening ( 46 ) of the grass collecting container ( 40 ; 140 ) is created. 3. Lawn mowing device according to claim 1 or 2, characterized in that the opening part ( 44 ) can be locked in the second operating position. 4. Lawn mowing device according to claim 2 or 3, characterized in that the opening part ( 44 ) in the first operating position forms at least a part of the bottom of the grass collecting container ( 40 ; 140 ). 5. Lawn mowing device according to one of claims 2 to 4, characterized in that the opening part ( 44 ) is pivotable about a horizontally extending pivot axis ( 45 ) between the first operating position and the second operating position. 6. Lawn mowing device according to claim 5, characterized in that the pivot axis ( 45 ) runs transversely to the direction of movement of the lawn mowing device. 7. Lawn mowing device according to claim 5 or 6, characterized in that the pivot axis ( 45 ) is mounted so as to be movable. 8. Lawn mowing device according to claim 7, characterized in that the pivot axis ( 45 ) is mounted so as to be movable between two end positions when the opening part ( 44 ) is in the second operating position. 9. Lawn mowing device according to one of claims 7 or 8, characterized in that the pivot axis ( 45 ) is displaceable between the two end positions in the direction of the discharge channel ( 30 ). 10. Lawn mowing device according to claim 7 to 9, characterized in that the pivot axis ( 45 ) is displaceable via two parallel sliding guide parts ( 70 ), which are each arranged in the region of the side walls of the grass application container ( 140 ). 11. Lawn mowing device according to claim 9 or 10, characterized in that the pivot axis ( 45 ) can be locked in one of the end positions at least by a quick-release fastener. 12. Lawn mowing device according to claim 10 or 11, characterized in that the sliding guide parts ( 70 ) limit the opening movement of the opening part ( 44 ) in one end position ( 145 ) of the pivot axis ( 45 ) via a stop ( 141 ) arranged on the opening part ( 44 ) and prevent the closing movement of the opening part ( 44 ) in the other end position ( 245 ) of the pivot axis ( 45 ). 13. Lawn mowing device according to claim 12, characterized in that the stop ( 141 ) in one end position ( 145 ) of the pivot axis ( 45 ) rests with a contact point ( 143 ) on at least one sliding guide part ( 70 ) and in the other end position ( 245 ) of the pivot axis ( 45 ) rests with at least two contact points ( 143 ) spaced apart in the direction of displacement of the opening part ( 44 ) on the sliding guide part ( 70 ). 14. Lawn mowing device according to claim 12 or 13, characterized in that the stop ( 141 ) has a curved surface ( 142 ) which interacts with the sliding guide part ( 70 ) in such a way that the two contact points ( 143 ) form the two ends of the curved surface ( 142 ) in the direction of displacement of the opening part ( 44 ) and as a result the opening part ( 44 ) can be pivoted about the pivot axis (45) in the one end position ( 145 ) of the pivot axis ( 45 ) with the sliding guide part ( 70 ) with the at least one contact point ( 143 ) and/or the curved surface ( 142 ) remaining in engagement. 15. Lawn mowing device according to one of claims 1 to 14, characterized in that a deflection device ( 50 ) for the cut grass is arranged downstream of the outlet ( 32 ) of the discharge channel ( 30 ). 16. Lawn mowing device according to claim 15, characterized in that the deflection device ( 50 ) is arranged in the upper region of the grass collecting container ( 40 ; 140 ). 17. Lawn mowing device according to claim 15 or 16, characterized in that the deflection device ( 50 ) at least partially forms the upper wall of the grass collecting container ( 40 ; 140 ). 18. Lawn mowing device according to one of claims 15 to 17, characterized in that the deflection device ( 50 ) is designed to extend in a fan-shaped manner from the outlet ( 32 ) of the discharge channel ( 30 ) in the grass discharge direction. 19. Lawn mowing device according to claim 18, characterized in that the deflection device ( 50 ) has grass guide webs ( 55 ) extending from the outlet ( 32 ) of the discharge channel ( 30 ), which are adapted in terms of their course and their arrangement to the fan-shaped extension of the deflection device ( 50 ). 20. Lawn mowing device according to one of claims 15 to 19, characterized in that the downstream end ( 52 ) of the deflection device ( 50 ) is inclined downwards in the installed state. 21. Lawn mowing device according to claim 20, characterized in that the downstream end ( 52 ) of the deflection device ( 50 ) has a relatively large transition radius ( 51 ) downwards. 22. Lawn mowing device according to claim 20 or 21, characterized in that the downstream end ( 52 ) of the deflection device ( 50 ) is inclined downwards over a relatively small extent. 23. Lawn mowing device according to one of claims 1 to 22, characterized in that the cutting device ( 20 ) has two cutting blades ( 22 ), wherein the inlet ( 31 ) of the discharge channel ( 30 ) is arranged between the two cutting blades ( 22 ), and wherein the inlet ( 31 ) of the discharge channel ( 30 ) can be blocked by means of a mulching plug device ( 60 ). 24. Lawn mowing device according to claim 23, characterized in that the mulching plug device ( 60 ) can be mounted and dismantled from there by means of an insertion device ( 65 ) through the opening ( 44 ) of the grass collecting container ( 40 ; 140 ) and the discharge channel ( 30 ) in front of or in the inlet ( 31 ) of the discharge channel ( 30 ). 25. Lawn mowing device according to claim 23 or 24, characterized in that the mulching plug device ( 60 ) has downward-facing sliding surfaces ( 62 ) in the installed state. 26. Lawn mowing device according to claim 23, characterized in that the cutting blades ( 22 ) each have at least one grass cutting edge and at least one additional cutting edge ( 23 ) which is arranged above the grass cutting edge.