Blade for a trimming device of a lawn trimmer and / or motorized sickle

Abstract

The invention relates to a blade for a trimming device of a lawn trimmer and / or motorized sickle, in particular to a blade for a trimming device of a lawn trimmer and / or motorized sickle, - wherein the blade is substantially parallelogram-shaped, - wherein the blade has a slit, - wherein the slit is configured for accommodating a blade holding element of the trimming device, - such that the blade rotates around the blade holding element and is movable relative to the blade holding element, for a cutting position with a cutting orientation of the blade defined by an end of the blade passing through the slit and another cutting position with another cutting orientation of the blade defined by another end of the blade passing through the slit, - wherein the path limited by the end of the blade passing through the slit does not extend parallel to a side of the parallelogram, and - wherein the parallelogram has obtuse internal angles.

Description

Technical Field

[0001] The present invention relates to a blade for a mowing device for a lawn mower and / or a motor sickle, a mowing device for a lawn mower and / or a motor sickle having at least one such blade, and a lawn mower and / or a motor sickle having such a mowing device. Summary of the Invention

[0002] The present invention is based on the objective of providing a blade for a lawn mower and / or motorized sickle, a lawn mower and / or motorized sickle having at least one such blade, and a lawn mower and / or motorized sickle having such a blade, which have corresponding improved characteristics.

[0003] This invention achieves this objective by providing a blade with the features described below. Furthermore, it achieves the objective of this invention by providing a mowing device with the features described below. Additionally, it achieves the objective of this invention by providing a lawnmower and / or a motorized sickle with the features described below.

[0004] The blade construction or configuration according to the invention is used for lawn mowers, particularly lawn mowing robots and / or motorized sickles, especially rotating mowing devices. The blade, especially the blade tip and / or shape, is generally or approximately, especially exactly, parallelogram-shaped. The blade (especially the parallelogram-shaped) includes or has a slit. This slit is constructed or configured to receive a blade retaining element of the mowing device, especially a blade retaining pin, bolt, or pin, i.e., the blade rotates or rotates about the blade retaining element and is movable or translateable relative to the blade retaining element, for a particularly first cutting position with a particularly first cutting orientation defined by a particularly first end of the slit, and another particularly second cutting position with a particularly second cutting orientation defined by a particularly second end of the slit. The path defined or restricted by the ends of the slit does not extend parallel to the sides of the parallelogram. The parallelogram has or has obtuse interior angles.

[0005] This (especially rotation and movement) makes it possible for the blade to move away or deviate in the event of impact with or collision with an obstacle. Therefore, this reduces or even completely eliminates the risk of blade damage, especially breakage and / or breakage. This, in turn, enables a long blade life and / or high safety. Additionally or alternatively, this (especially rotation and movement) allows for changes in the cutting position with a cutting orientation, especially without needing to detach the blade from the trimming device (especially blade retention).

[0006] Additionally or alternatively, this (especially the cutting position and cutting orientation) makes wear of the blade, particularly on different sides of the parallelogram, possible. This, in turn, enables a long service life for the blade.

[0007] Additionally or alternatively, this (especially the parallelogram) makes symmetry, particularly point symmetry and / or double rotational symmetry of the cutting edge possible. Therefore, it makes it possible to keep the imbalance of the cutting edge, especially the trimming device, to be minimal or even completely avoided. Additionally or alternatively, regardless of whether the cutting edge is moved and rotated, particularly in one cutting position with one cutting orientation or particularly in another cutting position with another cutting orientation, it makes the same cutting or trimming result possible. Additionally or alternatively, this (especially the parallelogram) makes the same cutting circle or trimming circle, particularly the same diameter of the cutting circle, possible, regardless of the direction of rotation of the cutting edge.

[0008] Additionally or alternatively, this (especially the path not being parallel to the direction of the parallelogram's sides and the obtuse interior angles of the parallelogram) makes it possible for the parallelogram to tilt or sweep the sides, especially the cutting or trimming sides, in the forward or lateral rotational direction of the trimming device, particularly in the case of process forces, especially air resistance and / or cutting or trimming resistance. Therefore, this makes good cutting angles and thus good cutting or trimming patterns or good cutting or trimming results possible.

[0009] In particular, the blade may be configured for cutting or trimming grass. Specifically, the blade may be configured for cutting grass using a so-called free-cutting method without a matching blade. Additionally or alternatively, the blade may be a cutting blade, a trimming blade, or a knife blade. Additionally or alternatively, the blade may be a single piece. Additionally or alternatively, the blade may be flat or planar. Additionally or alternatively, the blade may extend or stretch, particularly primarily, in two dimensions or directions, especially radial and rotational directions, and be substantially parallelogram-shaped in both dimensions.

[0010] A roughly parallelogram shape may mean the following: the basic parallelogram shape of the blade may be obvious. Additionally or alternatively, the blade may have at least one rounded corner. In particular, the value of the corner radius, especially the value of the corner radius of the corresponding rounded corner, may be the length of the shorter side of the parallelogram, especially the length value of a maximum 10% (percentage), especially a maximum 5%. Additionally or alternatively, the opposite sides of the parallelogram may be approximately or almost, especially exactly, of the same length. In particular, approximately the same length may mean that the opposite sides of the parallelogram may have a length deviation of a maximum of 2.5%, especially a maximum of 1%. Additionally or alternatively, the opposite sides of the parallelogram may be approximately or almost, especially exactly, parallel. In particular, approximately parallel may mean that the opposite sides of the parallelogram may have an angular deviation of a maximum of 2.5° (degrees), especially a maximum of 1°. Additionally or alternatively, the values ​​of opposite interior angles of a parallelogram, especially interior angles, may be approximately or about, especially exactly the same. In particular, approximately the same may mean that opposite interior angles of a parallelogram may have an angular deviation of up to 2.5°, especially up to 1°.

[0011] The slit can be a guide slit and / or a longitudinal slit and / or an elongated hole. Additionally or alternatively, the slit may have a length of at least 25% and / or at most 75%, especially 50%, of the length of the particularly long side of the parallelogram. Additionally or alternatively, the slit may be configured to accommodate a blade retaining element for retention by which the blade is particularly movably supported. Additionally or alternatively, the slit may have exactly, especially two ends. Additionally or alternatively, the ends may be particularly correspondingly rounded or circular. Further additionally or alternatively, the slit may extend in a plane defined by the parallelogram.

[0012] At any given moment, the blade may be moved, and in particular rotated, either in one of the cutting positions, particularly with one of the cutting orientations, or in another cutting position, particularly with another cutting orientation. Additionally or alternatively, the cutting position and cutting orientation may be stably defined, and / or by centrifugal force, or by the rotation of the trimming device, particularly about its axis of rotation. In particular, the axis of rotation of the trimming mechanism may be referred to as the overall axis of rotation of the trimming device.

[0013] This path can be an intermediate path.

[0014] Non-parallelism can mean an angular deviation of at least 5°, and especially at least 10°.

[0015] The blade, especially the parallelogram, does not need to be rectangular.

[0016] In an improved embodiment of the invention, the blade includes or has cutting edges at at least, particularly exactly two, opposite, particularly long sides of the parallelogram. In particular, the slit is configured to accommodate a blade-holding element of a trimming device such that the blade can cut or trim using a particularly first cutting edge in one cutting orientation and another, particularly a second cutting edge in another cutting orientation. In other words, the end of the blade is arranged for cutting or trimming with the blade using a particularly first cutting edge in one cutting orientation and another, particularly a second cutting edge in another cutting orientation. In particular, the blade may have cutting edges at two short sides of the parallelogram. Additionally or alternatively, the cutting edges may extend substantially or approximately, particularly exactly completely, through the respective sides. Additionally or alternatively, at a certain moment, the blade may cut using either one cutting edge in one cutting orientation or the other cutting edge in another cutting orientation.

[0017] The tear can be curved, especially S-shaped or banana-shaped, or extend in a curved, especially S-shaped or banana-shaped manner.

[0018] In one improvement of the invention, the slit (especially only) is straight or extends in a straight line. This makes it possible that the slit can be short and / or that the weakening of the blade edge, especially the material weakening, is kept small and / or, in particular, the high strength of the blade edge.

[0019] In an improved embodiment of the invention, the slit is constructed in such a way as to accommodate the blade retaining element of the trimming device, or the end is arranged in the blade such that, particularly in the case of retention by the blade retaining element and in the case of rotation of the trimming device, particularly about the axis of rotation of the trimming device, the cutting orientation of the blade is rotated relative to each other by approximately 180°, particularly about the blade retaining element. This makes it possible to achieve particularly identical, particularly good cutting or trimming results and / or particularly identical cutting or trimming circles. In particular, approximately 180° can mean that the cutting orientation of the blade can deviate from 180° by a maximum of 2.5°, particularly by a maximum of 1°.

[0020] In one improved embodiment of the invention, the path, particularly the slit, extends through the center of mass or centroid of the cutting edge. This makes it possible for the cutting edge, particularly by centrifugal force or by rotation of the trimming device, particularly about the axis of rotation of the trimming mechanism, to either move to one cutting position and rotate to one cutting orientation, or to move to another cutting position and rotate to another cutting orientation, or to define or determine the cutting orientation. In particular, the center of mass of the cutting edge may coincide with the intersection of the diagonals of a parallelogram.

[0021] In one improved embodiment of the invention, the path, particularly the cleavage point, extends symmetrically and / or with double rotational symmetry within the blade. This makes it possible to keep the imbalance of the blade, particularly the trimming device, particularly small or even completely avoid and / or to produce particularly identical cutting or trimming results and / or particularly identical cutting or trimming circles. In particular, the path, particularly the cleavage, can be arranged and extended in a shaped manner with point symmetry and / or double rotational symmetry within the blade. Additionally or alternatively, the path, particularly the cleavage, can extend symmetrically and / or with double rotational symmetry about the intersection of the diagonals of a parallelogram.

[0022] In an improved embodiment of the invention, the ends of the slits are spatially closer to the corresponding angles of the short diagonals of the parallelogram than to the angles of the long diagonals. Additionally or alternatively, the short diagonal angle between the path and the short diagonal of the parallelogram is smaller than the long diagonal angle between the path and the long diagonal of the parallelogram. Additionally or alternatively, the path extends between the short diagonal and the long diagonal of the parallelogram. This makes it possible that the inclination of the sides of the cut or trimmed parallelogram is optimal in the forward or forward rotation direction of the trimming device. Therefore, this makes particularly good cutting angles possible, and thus particularly good cutting or trimming patterns or particularly good cutting or trimming results. In particular, the short diagonal angle and / or the long diagonal angle are correspondingly acute and / or minimal angles. In particular, the short diagonal angle and / or long diagonal angle need not be larger compensating angles, supplementary angles, or subsidiary angles. Additionally or alternatively, the angle between the short and long diagonals may mean within the range of acute angles between the short and long diagonals.

[0023] In one improved embodiment of the invention, the adjacent sides of the parallelogram are of different lengths. Specifically, the value of the short orthogonal angle between the path and the short orthogonal line orthogonal to the short side of the parallelogram is smaller than the value of the long orthogonal angle between the path and the long orthogonal line orthogonal to the long side of the parallelogram. This makes it possible, in particular, that the inclination of the side of the parallelogram, especially the side to be cut or trimmed, may be optimal in the forward or forward rotation direction of the trimming device. Therefore, this makes particularly good cutting angles possible, and thus particularly good cutting or trimming patterns or particularly good cutting or trimming results. In particular, the short orthogonal angle and / or the long orthogonal angle are particularly likely to be acute angles and / or minimum angles. In particular, the short orthogonal angle and / or the long orthogonal angle do not necessarily need to be larger compensating angles, supplementary angles, or auxiliary angles.

[0024] In one improved embodiment of the invention, the long side of the parallelogram (if it exists) has or has a length of at least 20 mm and / or at most 160 mm, at most 80 mm, at most 40 mm. Additionally or alternatively, the short side of the parallelogram (if it exists) has or has a length of at least 10 mm and / or at most 80 mm, at most 40 mm, at most 20 mm. Additionally or alternatively, the slit has or has a length of at least 7.5 mm and / or at most 30 mm, at most 15 mm. Additionally or alternatively, the obtuse interior angle, especially the interior angle, has a value of at least 95° and / or at most 120°, at most 100°. Additionally or alternatively, the short diagonal angle, especially the angle between the path and the short diagonal of the parallelogram, has a value of at least 10° and / or at most 40°, at most 20°. Additionally or alternatively, the long diagonal angle between the path and the long diagonal of the parallelogram, particularly, has a value of at least 15° and / or at most 75°, particularly 37.5°. Additionally or alternatively, the short orthogonal angle between the path and a short orthogonal line that is particularly orthogonal to the short side (wherever it exists) of the parallelogram, particularly, has a value of at least 2.5° and / or at most 10°, particularly 5°. Additionally or alternatively, the long orthogonal angle between the path and a long orthogonal line that is particularly orthogonal to the long side (wherever it exists) of the parallelogram, particularly, has a value of at least 70° and / or at most 85°, particularly 80°.

[0025] The trimming device according to the invention is constructed or configured for lawn mowers and / or motorized sickles. The trimming device includes or has at least one blade, particularly such as those previously mentioned or described, and particularly only one, particularly unique blade holding device. The blade holding device includes or has at least one, particularly such blade holding element that is particularly movably supported and held. The blade holding device is constructed or configured for rotational or rotational movement about a rotational axis of the trimming device, particularly such and / or the center of the trimming device.

[0026] In particular, the trimming device may have multiple blades with particularly identical structures, as previously mentioned. The blade holding device may have multiple blade holding elements. In particular, the multiple blades and the multiple blade holding elements may match each other, and be particularly identical.

[0027] The blade retaining element and the slit in the blade can be configured to accommodate the blade retaining element, particularly parallel to its longitudinal axis. Specifically, the longitudinal axis can be non-orthogonal to, and particularly parallel to, the axis of rotation of the trimming device. Additionally or alternatively, the longitudinal axis can be non-parallel to, and particularly orthogonal to, the direction of rotation of the trimming device, particularly the blade retaining element, and / or orthogonal to the radial direction of rotation and / or the axis of rotation of the trimming device (particularly originating from the axis of rotation of the trimming device).

[0028] The fixation can be removed, especially without damage and / or without tools, and can be removed by the user.

[0029] The blade and the blade retaining element can be different.

[0030] The blade retaining device may have, in particular, a blade or a blade disc.

[0031] The blade may extend out of the outer edge of the blade holder, particularly in the case of rotation of the blade holder, especially around the axis of rotation of the trimming device, via the radial direction of the blade holder and / or extend radially away from the longitudinal axis of the element.

[0032] The trimming device, especially the blade holding device, may have a bearing, particularly centrally arranged, for accommodating the rotating shaft, particularly in an axial direction not orthogonal to, but rather parallel to, the axis of rotation of the trimming device. In particular, this bearing may define the axis of rotation of the trimming device.

[0033] In one improved embodiment of the invention, the blade retaining element is arranged at a distance from or eccentrically from the axis of rotation of the trimming device, particularly in a radial direction (particularly originating from the axis of rotation of the trimming device) orthogonal to the axis of rotation of the trimming device. This makes it possible that centrifugal force can be generated or caused to act on the blade, particularly by the rotation of the trimming device, particularly about the axis of rotation of the trimming device.

[0034] In an improved embodiment of the invention, the parallelogram is shaped such that the ends of the slits are arranged in the blade, and in particular, the blade retaining element is arranged such that, in the case of retention by the blade retaining element and in the case of rotation of the trimming device, the axis of rotation of the trimming device and the two correspondingly distant corners of the parallelogram, particularly the shorter side, in one cutting position of the blade with one cutting orientation and / or in another cutting position of the blade with another cutting orientation, are approximately or almost, particularly exactly, spaced at the same value, especially the same value of the spacing, in a manner that is moved and rotated, particularly by centrifugal force. In particular, the spacing, especially the value of the spacing, is particularly correspondingly a minimum of 80 mm and / or a maximum of 640 mm, particularly a maximum of 320 mm, particularly 140 mm. This makes it possible for particularly identical cutting circles or trimming circles. In particular, approximately identical spacing can mean that the spacing can have a maximum deviation of 2.5%, particularly a maximum of 1%, particularly a length deviation.

[0035] In an improved embodiment of the invention, the parallelogram is shaped such that the ends of the slits are arranged in the blade, and in particular, the blade retaining element is arranged such that, in the case of being held by the blade retaining element and in the case of rotation of the trimming device, the particularly long side of the parallelogram is moved and rotated, in one cutting position of the blade with one cutting orientation and / or in another cutting position of the blade with another cutting orientation, particularly by centrifugal force, extending approximately or almost, particularly just exactly, in a particularly radial direction (particularly from the axis of rotation of the trimming device) orthogonal to the axis of rotation of the trimming device. This makes it possible that the inclination of the particularly cutting or trimming side of the parallelogram may be optimal in the forward or forward rotation direction of the trimming device. Therefore, this makes particularly good cutting angles possible and thus makes particularly good cutting or trimming patterns or particularly good cutting or trimming results possible. In particular, this can be understood as the side and the radial direction may have an angular deviation of up to 2.5°, particularly up to 1°.

[0036] The lawn mower and / or the motorized sickle according to the invention, as previously mentioned or described, include or have, in particular, one mowing device.

[0037] In particular, lawn mowers can be highly automated lawn mowing robots.

[0038] Motorized sickles can be free-standing cutters, lawn mowers, and / or lawn trimmers.

[0039] Lawn mowers and / or motorized sickles may, in particular, have a rotating shaft, a rotating hub, or a drive shaft. In particular, the rotating shaft may be configured for rotation about the axis of rotation of the mowing device.

[0040] Lawn mowers and / or motorized sickles may, in particular, have an electrical drive motor for driving the rotation of the mowing device, and thus the rotation of the mowing device, and in particular the blade holding device, about the axis of rotation of the mowing device.

[0041] In one improvement of the invention, the lawnmower and / or motorized sickle correspondingly have a trimming device with sides that are generally radially extending parallelograms. The lawnmower and / or motorized sickle are correspondingly constructed or configured to allow the trimming device, especially the blade holding device, to rotate or rotate with the blade at least sometimes forward or in front or towards the front side with the generally radially extending sides. This makes particularly good cutting angles and therefore particularly good cutting patterns or trimming patterns or particularly good cutting or trimming results possible. In particular, at least sometimes this can mean at least 50% of the time. Attached Figure Description

[0042] Further advantages and aspects of the invention will become apparent from the claims and the description of the embodiments of the invention below, illustrated with reference to the accompanying drawings. Wherein:

[0043] Figure 1 A top view is shown of the blade of a trimming device according to the invention, directed toward a trimming device for lawn mowers and / or motorized sickles.

[0044] Figure 2 Showing Figure 1 A cross-sectional view of the cutting edge along the cutting plane II-II.

[0045] Figure 3 Showing Figure 1 The blade runs along another cross-sectional view of plane III-III.

[0046] Figure 4 Showing Figure 1 The blade is visible from the perspective view above.

[0047] Figure 5 Showing Figure 1 The blade is seen from another perspective view below.

[0048] Figure 6 Displayed with Figure 1 A longitudinal section view of the trimming device according to the invention, showing the blade of a lawnmower and / or motorized sickle.

[0049] Figure 7Showing the direction Figure 6 A schematic top view of the trimming device, and

[0050] Figure 8 Displayed with Figure 6 A schematic view of a lawn mower according to the invention and a motorized sickle according to the invention. Detailed Implementation

[0051] Figures 1 to 8 The blade 1 according to the invention is shown in the trimming device 50 for a lawnmower 100 and / or a motorized sickle 200. The blade 1 is generally parallelogram-shaped, especially in a plane and / or in a particularly horizontal direction r,u, especially radial r and rotational direction u. The blade 1 has a slit 2. The slit 2 is configured to accommodate a blade holding element 52 of the trimming device 50 such that the blade 1 can rotate about and move relative to the blade holding element 52 for a cutting position SPa with a cutting orientation SRa defined by the end 2Ea of the slit 2 and another cutting position SPb with another cutting orientation SRb defined by the other end 2Eb of the slit 2. The path 2S defined by the ends 2Ea, 2Eb of the slit 2 does not extend parallel to the sides PAa, PAb, PAc, PAd of the parallelogram PA. The parallelogram PA has obtuse interior angles β, δ.

[0052] In particular, "approximately horizontal" can mean a deviation of up to 10°, up to 5°, up to 3°, or even an angular deviation from the horizontal line.

[0053] Specifically, the cutting edge 1 has cutting edges 3a and 3b at at least two opposing, particularly long, sides PAb and PAd of the parallelogram PA. In particular, the slit 2 is constructed such that the cutting edge 1 can cut with one of the cutting edges 3a in one cutting orientation SRra and with the other cutting edge 3b in the other cutting orientation SRb.

[0054] Furthermore, crack 2 is straight.

[0055] Furthermore, the slit 2 is constructed such that the cutting orientations SRa,SRb of the blade 1 rotate relative to each other at approximately 180°.

[0056] In addition, path 2S, especially the rift 2, extends through the centroid 1MP of the blade 1.

[0057] Furthermore, path 2S, especially the cleavage point 2, extends symmetrically and / or with double rotational symmetry in the blade 1.

[0058] Furthermore, compared to the angles PAA and PAC of the long diagonal PAe of parallelogram PA, the ends 2Ea and 2Eb of the crack 2 are closer to the corresponding angles PAB and PAD of the short diagonal PAf of parallelogram PA, respectively.

[0059] Additionally or alternatively, the short diagonal angle ε between path 2S and the short diagonal PAf of parallelogram PA is less than the long diagonal angle ζ between path 2S and the long diagonal PAe of parallelogram PA.

[0060] Alternatively or additionally, path 2S extends between the short diagonal PAf of parallelogram PA and the long diagonal PAe of parallelogram PA.

[0061] Furthermore, the adjacent sides PAa, PAb, PAc, and PAd of parallelogram PA have different lengths. In particular, the angle η between path 2S and the short orthogonal line PAh, which is orthogonal to the shorter sides PAa and Pac of parallelogram PA, is smaller than the angle θ between path 2S and the long orthogonal line Pag, which is orthogonal to the longer sides PAb and Pad of parallelogram PA.

[0062] Specifically, the long sides PAb and PAd of the parallelogram PA have a length PAbL and PAdL of at least 20 mm and / or at most 160 mm, especially 40 mm.

[0063] Additionally or alternatively, the shorter sides PAa, PAc of the parallelogram PA have a length PAaL, PAcL of at least 10 mm and / or at most 80 mm, especially 20 mm.

[0064] Additionally or alternatively, the slit 2 has a length 2L of at least 7.5 mm and / or at most 30 mm, especially 15 mm.

[0065] Additionally or alternatively, the obtuse interior angle β,δ is at least 95° and / or at most 120°, especially 100°.

[0066] Additionally or alternatively, the angle ε between path 2S and the short diagonal PAf of parallelogram PA is at least 10° and / or at most 40°, especially 20°.

[0067] Additionally or alternatively, the long diagonal angle ζ between path 2S and the long diagonal PAe of parallelogram PA is at least 15° and / or at most 75°, especially 37.5°.

[0068] Additionally or alternatively, the angle η between path 2S and the short orthogonal line PAh, which is orthogonal to the short sides PAa, Pac of parallelogram PA, is at least 2.5° and / or at most 10°, especially 5°.

[0069] Additionally or alternatively, the angle θ between the path 2S and the long orthogonal line PAg, which is orthogonal to the long sides PAb and Pad of the parallelogram PA, is at least 70° and / or at most 85°, especially 80°.

[0070] Figures 6 to 8 A trimming device 50 according to the invention is shown for use with a lawn mower 100 and / or a motorized sickle 200. The trimming device 50 has at least one blade 1 and a blade holding device 51. The blade holding device 51 has at least one blade holding element 52 for securing the blade 1. The blade holding device 51 is configured for rotation, particularly in the direction of rotation u, about a particularly generally perpendicular axis of rotation 50A of the trimming device 50.

[0071] In particular, approximately vertical can mean a deviation of up to 10°, up to 5°, up to 3°, or an angular deviation about the vertical line.

[0072] In the illustrated embodiment, the trimming device 50 has three blades 1 and the blade holding device 51 has three blade holding elements 52. In an alternative embodiment, the trimming device may have only one unique blade or two or at least four blades. Additionally or alternatively, in an alternative embodiment, the blade holding device may have only one unique blade holding element or two or at least four blade holding elements.

[0073] In particular, the blade 3 and / or blade retaining element 52 are arranged around the rotation axis 50A of the trimming device, especially in the rotation direction u, especially regularly, especially equidistantly, especially at 120° intervals.

[0074] Additionally, the opening 2 accommodates a blade retaining element 52 for securing the blade 1 via the blade retaining element 52.

[0075] In the shown embodiment, the slit 2 of the blade retaining element 52 and the blade 1 is configured to accommodate the blade retaining element 52 along a longitudinal axis 52A of the element, which is parallel to and particularly generally perpendicular to the blade retaining element 52.

[0076] Specifically, the blade holding element 52 is arranged at intervals from the rotation axis 50A of the trimming device in a radial direction r orthogonal to the rotation axis 50A of the trimming device.

[0077] Furthermore, the parallelogram PA is shaped in such a way that the ends 2Ea, 2Eb of the slit 2 are arranged in the blade 1 in such a way, and in particular, the blade holding element 52 is arranged such that, in the case of fixing by the blade holding element 52 and in the case of rotation of the trimming device 50, the rotation axis 50A of the trimming device and the two corresponding far-away corners PAC, PAD, PAA, PAB of the parallelogram PA, especially the short sides PAc, PAa, have approximately the same spacing ABb in one cutting position SPa of the blade 1 with one cutting orientation SRa and / or in another cutting position SPb of the blade 1 with another cutting orientation SRb, as in Figure 7 As shown in the cutting position SPa of one of the cutting orientations SRa of the blade 1 with the blade 1, particularly for the angles PAC, PAD of the short side PAC of the parallelogram PA. In particular, the spacing ABa, ABb is a minimum of 80 mm and / or a maximum of 640 mm, especially 140 mm.

[0078] Furthermore, the parallelogram PA is shaped in such a way that the ends 2Ea, 2Eb of the slit 2 are arranged in the blade 1 in such a way, and in particular, the blade holding element 52 is arranged such that, in the case of being fixed by the blade holding element 52 and in the case of rotation of the trimming device 50, the particularly long sides PAb, PAd of the parallelogram PA extend approximately in a radial direction r orthogonal to the rotation axis 50A of the trimming device in one cutting position SPa of the blade 1 with one cutting orientation SRa of the blade 1 and / or in another cutting position SPb of the blade 1 with another cutting orientation SRb of the blade 1. Figure 7 In the diagram, the long side PAb of parallelogram PA is shown in one of the cutting positions SPa of blade 1 as one of the cutting orientations SRa of blade 1.

[0079] Figure 8 A lawn mower 100 (especially a lawn mowing robot) according to the invention and / or a motorized sickle 200 according to the invention are shown. The lawn mower 100 and / or the motorized sickle 200 have a mowing device 50.

[0080] Specifically, the lawn mower 100 and / or the motorized sickle 200 have a trimming device 50 with sides PAb, PAd of a parallelogram PA extending approximately in the radial direction r. The lawn mower 100 and / or the motorized sickle 200 are configured to cause the trimming device 50 to rotate at least sometimes forward or as a front side VS with the blade 1 extending approximately in the radial direction r with the sides PAb, PAd. Figure 7As shown in the diagram, for the long side PAb of parallelogram PA, at one of the cutting positions SPa of the blade 1 with one of the cutting orientations SRa of the blade 1.

[0081] In the illustrated embodiment, the lawn mower 100 and / or the motorized sickle 200 have a rotating shaft 600. In particular, the rotating shaft 600 is configured for rotation about the rotation axis 50A of the mowing device.

[0082] The trimming device 50, and especially the blade holding device 51, has a bearing seat 5W for accommodating the rotating shaft 600, particularly in an axial direction z that is not orthogonal to the rotation axis 50A of the trimming device, particularly parallel, particularly generally perpendicular, and especially the bearing seat 5W accommodates the rotating shaft 60.

[0083] In addition, the lawn mower 100 and / or motorized sickle 200 have a drive motor 500 for driving, in particular, the rotation axis 600 and thus the rotation of the mowing device 50, in particular the blade holding device 51, about the rotation axis 50A of the mowing device.

[0084] In particular, the lawn mower 100 and / or the motorized sickle 200 cause the mowing device 50 to rotate, in particular, with the blade 1 rotating in a manner with the sides PAb, Pad extending approximately in the radial direction r in front or as the front side VS, as in Figure 7 As shown in the cutting position SPa of one of the cutting orientations SRa of the blade 1 with respect to the long side PAb of the parallelogram PA.

[0085] Therefore, the blade holding device 51 rotates about the trimming device rotation axis 50A of the trimming device 50.

[0086] Therefore, the cutting edge 1 is moved, in particular, relative to the cutting edge retaining element 52, to one of the cutting positions SPa, and is rotated, in particular, about the cutting edge retaining element 52, to one of the cutting orientations SRa, as in Figure 6 and 7 As shown in the figure, or in particular, relative to the blade holding element 52, it is moved to another cutting position SPb, and is rotated about the blade holding element 52 to another cutting orientation SRb, and is rotated.

[0087] In particular, the blade retaining element 52 holds the blade 1 at one end 2Ea of the slit 2 or at the other end 2Eb of the slit 2.

[0088] Specifically, therefore, the blade 1 utilizes one of the cutting edges 3a with one of the cutting orientations SRa (as in... Figure 7(as shown in the figure) or with another cutting orientation SRb using another cutting edge 3b, especially cutting grass 300, as in Figure 8 As shown in the document.

[0089] If the blade 1 touches the obstacle 400, the blade 1 is moved away from or deviated from the obstacle 400 by rotation and movement.

[0090] In terms of time, after being touched, especially after being removed or deviated from, the cutting edge 1 moves to one of the cutting positions SPa and rotates to one of the cutting orientations SRa, or moves to another cutting position SPb and rotates to another cutting orientation SRb.

[0091] In the shown embodiment, the blade retaining element 52 is configured to retain the blade 1 by form-fitting connection and / or prevent it from disengaging from the blade retaining element 52 in the radial direction r and / or in the rotational direction u and / or against that direction.

[0092] In addition, the blade retaining device 51 is constructed to retain the blade 1 by form-fitting connection and / or prevent it from disengaging from the blade retaining device 51 in the axial z direction and / or in the opposite direction.

[0093] Furthermore, the cutting edge 1 hardly extends or stretches in the axial direction z, especially relative to the radial direction r and / or the rotational direction u.

[0094] Additionally or alternatively, the cutting edge 1 is approximately or, for example, mirror-symmetric about a plane, a cross-section, or a longitudinal cross-section, or normal to the axis z.

[0095] As the embodiments shown and previously described make it clear, the present invention provides an advantageous blade for a lawn mower and / or motorized sickle, an advantageous lawn mower and / or motorized sickle having at least one such blade, and an advantageous lawn mower and / or motorized sickle having such a blade, which has correspondingly improved characteristics.

Claims

1. Blade (1) of the trimming device (50) for a lawn mower (100), - in, The blade (1) is roughly parallelogram-shaped. - Wherein, the blade (1) has a slit (2), - Wherein, the slit (2) is configured to accommodate the blade retaining element (52) of the trimming device (50), That is, the blade (1) is rotatable about the blade holding element (52) and movable relative to the blade holding element (52), for a cutting position (SPa) of the blade (1) with a cutting orientation (SRa) defined by the end (2Ea) of the slit (2) and another cutting position (SPb) of the blade (1) with another cutting orientation (SRb) defined by the other end (2Eb) of the slit (2). - Wherein, the path (2S) restricted by the ends (2Ea, 2Eb) of the rift (2) does not extend parallel to the sides (PAa, PAb, PAc, PAd) of the parallelogram (PA), and - Wherein, the parallelogram (PA) has obtuse interior angles (β, δ), wherein the obtuse interior angles (β, δ) are at least 95°. - Wherein, compared to the angles (PAA, PAC) of the long diagonal (PAe) of the parallelogram (PA), the ends (2Ea, 2Eb) of the slit (2) are respectively closer to the corresponding angles (PAB, PAD) of the short diagonal (PAf) of the parallelogram (PA), and / or - Wherein, the angle (ε) of the short diagonal between the path (2S) and the short diagonal (PAf) of the parallelogram (PA) is less than the angle (ζ) of the long diagonal between the path (2S) and the long diagonal (PAe) of the parallelogram (PA).

2. The blade (1) of the trimming device (50) for a motorized sickle (200), - in, The blade (1) is roughly parallelogram-shaped. - Wherein, the blade (1) has a slit (2), - Wherein, the slit (2) is configured to accommodate the blade retaining element (52) of the trimming device (50), That is, the blade (1) is rotatable about the blade holding element (52) and movable relative to the blade holding element (52), for a cutting position (SPa) of the blade (1) with a cutting orientation (SRa) defined by the end (2Ea) of the slit (2) and another cutting position (SPb) of the blade (1) with another cutting orientation (SRb) defined by the other end (2Eb) of the slit (2). - Wherein, the path (2S) restricted by the ends (2Ea, 2Eb) of the rift (2) does not extend parallel to the sides (PAa, PAb, PAc, PAd) of the parallelogram (PA), and - Wherein, the parallelogram (PA) has obtuse interior angles (β, δ), wherein the obtuse interior angles (β, δ) are at least 95°. - Wherein, compared to the angles (PAA, PAC) of the long diagonal (PAe) of the parallelogram (PA), the ends (2Ea, 2Eb) of the slit (2) are respectively closer to the corresponding angles (PAB, PAD) of the short diagonal (PAf) of the parallelogram (PA), and / or - Wherein, the angle (ε) of the short diagonal between the path (2S) and the short diagonal (PAf) of the parallelogram (PA) is less than the angle (ζ) of the long diagonal between the path (2S) and the long diagonal (PAe) of the parallelogram (PA).

3. The blade (1) according to claim 1 or 2, - Wherein, the blade (1) has cutting edges (3a, 3b) at at least two opposite sides (PAb, PAd) of the parallelogram (PA).

4. The blade (1) according to claim 1 or 2, - in, The rift (2) is straight.

5. The blade (1) according to claim 1 or 2, - in, The slit (2) is configured such that the cutting orientations (SRa, SRb) of the blade (1) rotate relative to each other.

6. The blade (1) according to claim 1 or 2, - in, The path (2S) extends through the centroid (1MP) of the blade (1).

7. The blade (1) according to claim 1 or 2, - in, The path (2S) extends symmetrically and / or doubly rotationally symmetrically in the blade (1).

8. The blade (1) according to claim 1 or 2, - Wherein, the path (2S) extends between the short diagonal (PAf) and the long diagonal (PAe) of the parallelogram (PA).

9. The blade (1) according to claim 1 or 2, - Wherein, the adjacent sides (PAa, PAb, Pac, PAd) of the parallelogram (PA) are of different lengths.

10. The blade (1) according to claim 1 or 2, - Wherein, the longer sides (PAb, PAd) of the parallelogram (PA) have a minimum length of 20 mm and / or a maximum length of 160 mm (PAbL, PAdL), and / or - Wherein, the The shorter sides (PAa, PAc) of a parallelogram (PA) have a minimum length of 10 mm and / or a maximum length of 80 mm (PAaL, PAcL), and / or - Wherein, the rift (2) has a length (2L) of at least 7.5 mm and / or at most 30 mm, and / or - Wherein, the obtuse interior angle (β,δ) is at most 120°, and / or - Wherein, the angle (ε) between the short diagonal (PAf) of the path (2S) and the short diagonal (PAf) of the parallelogram (PA) is at least 10° and / or at most 40°, and / or - Wherein, the angle (ζ) between the long diagonal (PAe) of the path (2S) and the long diagonal (PAe) of the parallelogram (PA) is at least 15° and / or at most 75°, and / or - Wherein, the angle (η) between the path (2S) and the short orthogonal line (PAh) orthogonal to the short sides (PAa, PAc) of the parallelogram (PA) is at least 2.5° and / or at most 10°, and / or - Wherein, the angle (θ) between the path (2S) and the long orthogonal line (PAg) orthogonal to the long side (PAb, PAc) of the parallelogram (PA) is at least 70° and / or at most 85°.

11. The blade (1) according to claim 3, - wherein the blade (1) has the cutting edges (3a, 3b) at at least two opposite long sides (PAb, PAd) of the parallelogram (PA), and / or - The slit (2) is constructed such that the blade (1) can cut with one of the cutting edges (3a) in one cutting orientation (SRa) and with the other cutting edge (3b) in another cutting orientation (SRb).

12. The blade (1) according to claim 5, - in, The slit (2) is configured such that the cutting orientations (SRa, SRb) of the blade (1) are rotated 180° relative to each other.

13. The blade (1) according to claim 6, - Wherein, the cleavage (2) extends through the centroid (1 MP) of the blade (1).

14. The blade (1) according to claim 7, - Wherein, the cleavage (2) extends symmetrically and / or doubly rotationally symmetrically in the blade (1).

15. The blade (1) according to claim 9, - Wherein, the angle (η) between the path (2S) and the short orthogonal line (PAh) orthogonal to the short side (PAa, PAc) of the parallelogram (PA) is less than the angle (θ) between the path (2S) and the long orthogonal line (PAg) orthogonal to the long side (PAb, PAd) of the parallelogram (PA).

16. The blade (1) according to claim 10, - Wherein, the longer sides (PAb, PAd) of the parallelogram (PA) have a length (PAbL, PAdL) of 40 mm, and / or - Wherein, the The shorter sides (PAa, PAc) of the parallelogram (PA) have a length (PAaL, PAcL) of 20 mm, and / or - Wherein, the slit (2) has a length of 15 mm (2L), and / or - Wherein, the obtuse interior angle (β,δ) is 100°, and / or - Wherein, the angle (ε) between the path (2S) and the short diagonal (PAf) of the parallelogram (PA) is 20°, and / or - Wherein, the angle (ζ) of the long diagonal between the path (2S) and the long diagonal (PAe) of the parallelogram (PA) is 37.5°, and / or - Wherein, the angle (η) between the path (2S) and the short orthogonal line (PAh) orthogonal to the short sides (PAa, PAc) of the parallelogram (PA) is 5°, and / or - Wherein, the angle (θ) between the path (2S) and the long orthogonal line (PAg) orthogonal to the long side (PAb, PAc) of the parallelogram (PA) is 80°.

17. A mowing device (50) for a lawn mower (100), wherein, The trimming device (50) has: - At least one blade (1) according to any one of claims 1 and 3-16, and - Blade holding device (51), wherein the blade holding device (51) has at least one blade holding element (52) for holding the blade (1), and wherein the blade holding device (51) is configured for rotation about the trimming device rotation axis (50A) of the trimming device (50).

18. A trimming device (50) for a motorized sickle (200), wherein, The trimming device (50) has: - At least one blade (1) according to any one of claims 2-16, and - Blade holding device (51), wherein the blade holding device (51) has at least one blade holding element (52) for holding the blade (1), and wherein the blade holding device (51) is configured for rotation about the trimming device rotation axis (50A) of the trimming device (50).

19. The trimming device (50) according to claim 17 or 18, - Wherein, the blade holding element (52) is arranged at a distance from the rotation axis (50A) of the trimming device in a radial (r) direction orthogonal to the rotation axis (50A) of the trimming device.

20. The pruning device (50) according to claim 17 or 18, - in, The parallelogram (PA) is formed in such a way that the ends (2Ea, 2Eb) of the slit (2) are arranged in the blade (1) in such a way that the blade holding element (52) is arranged such that, in the case of being held by the blade holding element (52) and in the case of rotation of the trimming device (50), the rotation axis (50A) of the trimming device and the two corresponding distant edges (PAC, PAD, PAA, PAB) of the parallelogram (PA) have the same spacing (ABa, ABb) in one cutting position (SPa) of the blade (1) with one cutting orientation (SRA) and / or in another cutting position (SPb) of the blade (1) with another cutting orientation (SRb).

21. The trimming device (50) according to claim 17 or 18, - Wherein, the parallelogram (PA) is formed in such a way that the ends (2Ea, 2Eb) of the slit (2) are arranged in such a way that the blade (1) is held by the blade holding element (52) and the trimming device (50) rotates, the sides (PAb, PAd) of the parallelogram (PA) extend in a radial direction (r) orthogonal to the rotation axis (50A) of the trimming device in one of the cutting positions (SPa) of the blade (1) with one of the cutting orientations (SRa) and / or in another cutting position (SPb) of the blade (1) with another cutting orientation (SRb).

22. The trimming device (50) according to claim 20, - Wherein, the two corresponding distant edges (PAC, PAD, PAA, PAB) of the parallelogram (PA) are the edges (PAC, PAD, PAA, PAB) of the shorter side (PAc, PAa) of the parallelogram (PA), and / or - Wherein, the The spacing (ABa, ABb) is a minimum of 80mm and / or a maximum of 640mm.

23. The trimming device (50) according to claim 22, - Wherein, the spacing (ABa, ABb) is 140mm.

24. The trimming device (50) according to claim 21, - in, In the case where the blade is held by the blade holding element (52) and in the case where the trimming device (50) rotates, the long side (PAb, PAd) of the parallelogram (PA) extends radially (r) orthogonal to the rotation axis (50A) of the trimming device in one of the cutting positions (SPa) of the blade (1) with one of the cutting orientations (SRa) of the blade (1) and / or in another cutting position (SPb) of the blade (1) with another cutting orientation (SRb).

25. Lawn mower (100), of which, The lawn mower (100) has: - The trimming device (50) according to any one of claims 17 and 19 to 24.

26. The lawn mower (100) according to claim 25, - Wherein, the lawn mower (100) has a mowing device (50) according to claim 21, and - in, The lawn mower (100) is configured to allow the mowing device (50) to rotate with the blade (1) in a manner that the sides (PAb, PAd) extending in the radial direction (r) are at least sometimes forward.

27. Motorized sickle (200), of which, The motorized sickle (200) has: - The trimming device (50) according to any one of claims 18 to 24.

28. The motorized sickle (200) according to claim 27, - Wherein, the motorized sickle (200) has a trimming device (50) according to claim 21, and - in, The motorized sickle (200) is configured to allow the trimming device (50) to rotate with the blade (1) at least sometimes forward along its radially (r) extended sides (PAb, PAd).

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