Intelligent mower

Abstract

The utility model provides an intelligent lawn mower which comprises an equipment body, and the equipment body is provided with a left side and a right side in the advancing direction of the equipment body; the cutting mechanism is arranged at the bottom of the equipment body and is close to the target side of the equipment body, and the target side is the left side or the right side; the first protective cover is arranged above the cutting mechanism, the first protective cover is provided with a first protective side wall extending downwards, and the bottom, corresponding to the target side, of the first protective side wall is provided with a folded edge which is lower than the cutting mechanism and extends towards the inner side of the first protective cover; a gap is formed between the tail end of the folded edge and a tool nose of the cutting mechanism in the horizontal direction. In the technical scheme of the embodiment of the invention, the folded edge is arranged on the first protection side wall, so that a better protection effect can be provided on the target side. In addition, a gap is formed between the tail end of the folded edge in the horizontal direction and a tool nose of the cutting mechanism, the cutting mechanism can effectively cut the edge, and the cutting efficiency is higher.

Description

[0001] Cross-references

[0002] This application claims priority to Chinese patent applications CN202311196717.3 and CN202311685903.3, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of electrical equipment, and more particularly to a smart lawnmower. Background Technology

[0004] With the continuous development of electromechanical technology, many tasks can now be accomplished using electromechanical equipment. For example, lawn mowing: by using a mobile lawnmower, not only can large areas of lawn be mowed efficiently, but the mowed lawn can also be kept neat and uniform. However, the high-speed rotating cutting mechanism poses a certain degree of danger; therefore, for user safety, lawnmowers typically have protective covers on their rotating cutting mechanisms.

[0005] Reducing the distance between the side of the protective cover and the blade tip, and reducing the distance between the protective cover and the ground, can provide better protection, but it also presents problems such as weed entanglement and high operating resistance of the cutting mechanism. Utility Model Content

[0006] In view of the above problems, this application is made to provide an intelligent lawnmower that solves or at least partially solves the above problems.

[0007] In one embodiment of this application, a smart lawnmower is provided, comprising:

[0008] The device body has a left side and a right side along its width direction;

[0009] A cutting mechanism is eccentrically disposed at the bottom of the device body and close to the target side of the device body, wherein the target side is the left or right side, and the cutting mechanism has a cutting area relative to the device body.

[0010] The first protective cover has a first protective sidewall extending downward, and the bottom of the first protective sidewall corresponding to the target side is provided with a folded edge that is lower than the cutting mechanism and extends into the inside of the first protective cover.

[0011] There is a gap between the end of the folded edge in the horizontal direction and the cutting area of ​​the cutting mechanism.

[0012] Optionally, in the horizontal direction, the gap between the end of the folded edge and the tip of the upper cutter of the cutting mechanism is 0.1-5 mm; and / or, in the vertical direction, the distance between the folded edge and the upper cutter of the cutting mechanism is 4-10 mm; or, the distance between the tip of the upper cutter of the cutting mechanism and the first protective side wall is 6-27 mm; and / or, the length of the folded edge is 5.9-22 mm.

[0013] Optionally, the intelligent mower further comprises a second protective cover; the second protective cover is arranged above the first protective cover, and a portion of the second protective cover corresponding to the target side has a second protective side wall extending downward; the second protective side wall is located outside the first protective side wall and has a gap with the first protective side wall.

[0014] Optionally, the bottom of the second protective side wall has a slope, which is higher on the outside and lower on the inside.

[0015] Optionally, the second protective side wall is a double-layer side wall; the double-layer side wall comprises an inner protective wall located on the inside and an outer protective wall located on the outside; the bottom of the outer protective wall is higher than that of the inner protective wall.

[0016] Optionally, the height difference between the outer protective wall and the inner protective wall is 10-20 mm, and / or, the height difference between the inner protective wall and the first protective side wall is 5-25 mm; or, the gap between the inner protective wall and the first protective side wall is 5-10 mm, and / or, the distance between the inner protective wall and the outer protective wall is 15-30 mm.

[0017] Optionally, the second protective cover is a base of the device body; the first protective cover and the cutting mechanism are arranged on the base, and the first protective cover and the cutting mechanism can move up and down relative to the base synchronously.

[0018] In another embodiment of the present application, an intelligent mower is also provided, comprising: a device body, along the width direction of the device body, the device body has a left side and a right side; a cutting mechanism, arranged eccentrically at the bottom of the device body and close to the target side of the device body, the target side is the left side or the right side; a first protective cover, arranged above the cutting mechanism, the first protective cover has a first protective side wall extending downward; the bottom of the first protective side wall is lower than the cutter on the cutting mechanism; a second protective cover, arranged above the first protective cover, a portion of the second protective cover corresponding to the target side of the device body has a second protective side wall extending downward; wherein, the second protective cover extends the distance between the target side of the device body and the cutter in the horizontal direction.

[0019] Optionally, the second protective side wall is a double-layer side wall; the double-layer side wall comprises an inner protective wall on the inner side and an outer protective wall on the outer side; the bottom of the outer protective wall is higher than the bottom of the inner protective wall.

[0020] In another embodiment of the present application, an intelligent mower is also provided, comprising: a device body, a bottom of which is provided with a walking wheel set, the walking wheel set comprising a front wheel set and a rear wheel set; a cutting mechanism, which is located between the front wheel set and the rear wheel set and is biased to the right side or the left side of the bottom of the device body; a second protective cover, which is located on the outer side of the cutting mechanism and has an inner protective wall and an outer protective wall, the ground clearance of the inner protective wall being lower than that of the outer protective wall, and a gap being provided between the inner protective wall and the outer protective wall.

[0021] Optionally, the intelligent mower further comprises: a first protective cover, which is located between the second protective cover and the cutting mechanism, the first protective cover and the cutting mechanism being arranged on the bottom of the device body and being capable of moving up and down relative to the device body synchronously.

[0022] Optionally, the outer side of the second protective cover is flush with the outer side of the corresponding side of the device body and the outer side of the rear wheel set, and the diameter of the cutting mechanism is greater than half the width of the bottom of the device body.

[0023] Optionally, the front wheel set has a front wheel rotation area relative to the device body, the cutting mechanism has a first cutting area relative to the device body, part of the first cutting area being located on the outer side of the rear wheel set and the front wheel rotation area, and the outer side of the second protective cover exceeds the outer side of the rear wheel set.

[0024] In another embodiment of the present application, another intelligent mower is also provided, comprising: a device body, which has a left side and a right side along the width direction of the device body; a cutting mechanism, which is arranged eccentrically on the bottom of the device body and close to the target side of the device body, the target side being the left side or the right side; a first protective cover, which is arranged above the cutting mechanism and has a first protective side wall extending downward; the bottom of the first protective side wall being lower than the cutter on the cutting mechanism; and a second protective cover, which is arranged above the first protective cover and has a second protective side wall extending downward at the part corresponding to the target side of the device body; the second protective side wall having a protective structure on the side facing the first protective side wall, the protective structure extending the distance of the target side of the device body from the cutter in the horizontal direction, the lower side of the protective structure being rotatable toward the first protective side wall, and the bottom end of the protective structure being lower than the bottom end of the second protective side wall.

[0025] Optionally, the protection structure comprises: a bracket, one end of which is arranged along a horizontal direction on one side of the second protective side wall towards the first protective side wall, and the other end of which extends along a vertical direction to be flush with the bottom end of the second protective side wall.

[0026] a rotating plate, which is rotatably arranged on the other end of the bracket towards one side of the second protective side wall, and the bottom end of the rotating plate is lower than the bottom end of the second protective side wall.

[0027] Optionally, the first protective side wall has a protective plate on one side thereof towards the cutting mechanism.

[0028] In another embodiment of the present application, another intelligent mower is also provided, comprising: a device body, which has a left side and a right side along the width direction of the device body; a cutting mechanism, which is arranged at the bottom of the device body and close to one target side of the device body, the target side being the left side and / or the right side; a first protective cover, which is arranged above the cutting mechanism, and the first protective cover has a first protective side wall extending downward; the bottom of the first protective side wall is lower than the cutter on the cutting mechanism; a second protective cover, which is arranged outside the first protective cover, and the second protective cover has a second protective side wall extending downward corresponding to the target side of the device body; a rotating plate, which is rotatably connected to the first protective side wall and / or the second protective side wall corresponding to the target side; wherein, in the vertical direction, the rotating plate extends downward, and when the protective plate is subjected to an external force, the rotating plate rotates towards the cutting mechanism.

[0029] Optionally, the rotating plate is connected to the end of the first protective side wall or the wall surface outside the first protective side wall through a rotating shaft; or the rotating plate is connected to the end of the second protective side wall, the wall surface inside the second protective side wall or the wall surface outside the second protective side wall through a rotating shaft; or the rotating plate is arranged between the first protective side wall and the second protective side wall through a rotating shaft.

[0030] Wherein, the rotating plate rotates around the rotating shaft, so that the angle of inclination of the rotating plate relative to the first protective side wall or the second protective side wall is in the range of [40 degrees to 70 degrees].

[0031] Optionally, when the rotating plate is connected to the first protective side wall, the first protective side wall is provided with a sliding seat, and the rotating plate is slidably arranged in the sliding seat, and the rotating plate slides up and down relative to the first protective side wall in the vertical direction.

[0032] Optionally, the intelligent mower further comprises a limiting member, which is arranged on the first protective cover or the device body; when the rotating plate moves downward to the limit position relative to the device body along the first protective side wall, the limiting member abuts against the rotating plate.

[0033] Optionally, the cutting mechanism comprises a plurality of cutting discs, which are arranged at the bottom of the device body in a staggered manner along the length direction of the device body; at least one cutting disc is arranged close to a target side of the device body, and the bottom of the first protective side wall corresponding to the target side is provided with a protective structure extending inward of the first protective cover and lower than the cutting mechanism.

[0034] Optionally, the second protective side wall is movably connected to the second protective cover, and the second protective side wall is arranged around the front side, left side and right side of the device body; the device body is provided with a collision sensing component on different direction sides, and when the second protective side wall is collided, the second protective side wall moves relative to the second protective cover to trigger the collision sensing component.

[0035] In the technical scheme of the embodiment of the present application, the folding edge is arranged at the position of the first protective side wall corresponding to the left side or the right side of the device body, which can provide good protection effect on the left side or the right side of the device body, and can greatly reduce the damage of the intelligent mower to people or animals. In addition, there is a gap between the end of the folding edge in the horizontal direction and the cutting edge of the cutting mechanism, and the cutting mechanism can effectively cut to the edge, and the cutting efficiency is higher. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0037] Figure 1 A top view of a part of a component of an intelligent mower provided by the embodiment of the present application;

[0038] Figure 2a A sectional view of a part of a component of an intelligent mower provided by the embodiment of the present application;

[0039] Figure 2b A perspective view of a part of a component of an intelligent mower provided by the embodiment of the present application;

[0040] Figure 3 A sectional view of another part of a component of an intelligent mower provided by the embodiment of the present application;

[0041] Figure 4 Fig. 9 is a schematic view of a knife and a first protective cover in a second gear state in an intelligent mower according to an embodiment of the present application;

[0042] Figure 5 Fig. 10 is a schematic view of a knife and a first protective cover in a third gear state in an intelligent mower according to an embodiment of the present application;

[0043] Figure 6 Fig. 11 is a schematic view of a knife and a first protective cover in a fourth gear state in an intelligent mower according to an embodiment of the present application;

[0044] Figures 7a-7d Fig. 12 shows a finger protection state diagram corresponding to a second protective side wall of the structure shown in Fig. 1; Figure 2a Fig. 13 shows a finger protection state diagram corresponding to a second protective side wall of the structure shown in Fig. 2;

[0045] Figures 8a-8d Fig. 14 shows a finger protection state diagram corresponding to a second protective side wall of the structure shown in Fig. 3; Figure 3 Fig. 15 shows a finger protection state diagram corresponding to a second protective side wall of the structure shown in Fig. 4;

[0046] Figure 9 Fig. 16 shows an adult foot protection state diagram corresponding to a second protective side wall of the structure shown in Fig. 1; Figure 2a Fig. 17 shows an adult foot protection state diagram corresponding to a second protective side wall of the structure shown in Fig. 2;

[0047] Figures 10a-10c Fig. 18 shows an adult foot protection state diagram corresponding to a second protective side wall of the structure shown in Fig. 3; Figure 3 Fig. 19 shows an adult foot protection state diagram corresponding to a second protective side wall of the structure shown in Fig. 4;

[0048] Figure 11a Fig. 20 shows a standing child foot protection state diagram corresponding to a second protective side wall of the structure shown in Fig. 1; 11b Fig. 21 shows a standing child foot protection state diagram corresponding to a second protective side wall of the structure shown in Fig. 2; Figure 2a Fig. 22 shows a standing child foot protection state diagram corresponding to a second protective side wall of the structure shown in Fig. 3;

[0049] Figures 12a-12c Fig. 23 shows a standing child foot protection state diagram corresponding to a second protective side wall of the structure shown in Fig. 4; Figure 3

[0050] Fig. 24 shows a kneeling child foot protection state diagram corresponding to a second protective side wall of the structure shown in Fig. 1; Figure 13 Figure 2a Fig. 25 shows a kneeling child foot protection state diagram corresponding to a second protective side wall of the structure shown in Fig. 2;

[0051] Figure 14 Figure 3 Fig. 26 shows a kneeling child foot protection state diagram corresponding to a second protective side wall of the structure shown in Fig. 3;

[0052] Figure 15 Fig. 27 shows a structure schematic view of an intelligent mower according to another embodiment of the present application;

[0053] Figure 16 Fig. 28 shows a structure schematic view of an intelligent mower according to still another embodiment of the present application; ​​

[0054] Figure 17 Structure diagram of the intelligent mower with the cutting area located at the inner side according to an embodiment of the present application;

[0055] Figure 18 Partial sectional view of the intelligent mower according to an embodiment of the present application;

[0056] Figure 19 Partial sectional view of the intelligent mower according to an embodiment of the present application;

[0057] Figure 20 Partial sectional view of the intelligent mower according to an embodiment of the present application; Figure 1

[0058] Figure 21 Partial sectional view of the intelligent mower according to an embodiment of the present application;

[0059] Figure 22 Structure diagram of the intelligent mower with the cutting area located at the outer side according to an embodiment of the present application; Figure 1

[0060] Structure diagram of the intelligent mower with the cutting area located at the outer side according to an embodiment of the present application; Figure 23

[0061] Partial sectional view of the intelligent mower target side according to an embodiment of the present application; Figure 24

[0062] Diagram of the cutting mechanism in the 80th gear state according to an embodiment of the present application; Figure 25

[0063] Diagram of the cutting mechanism in the 90th gear state according to an embodiment of the present application; Figure 26

[0064] Diagram of the cutting mechanism in the 100th gear state according to an embodiment of the present application; Figure 27

[0065] Diagram of the cutting mechanism in the 70th gear state according to an embodiment of the present application; Figure 28

[0066] Diagram of the cutting mechanism in the 60th gear state according to an embodiment of the present application; Figure 29

[0067] Diagram of the cutting mechanism in the 50th gear state according to an embodiment of the present application; Figure 30

[0068] Diagram of the cutting mechanism in the 50th gear state according to an embodiment of the present application; Figure 31 ​A schematic view of the cutting mechanism in the 40th gear state provided by the embodiment of the present application;

[0069] Figure 32 A sectional view of the intelligent mower provided by the embodiment of the present application;

[0070] Figure 33 A sectional view of another intelligent mower provided by the embodiment of the present application;

[0071] Figure 34 A schematic view of various cases of the setting position of the rotating plate provided by the embodiment of the present application;

[0072] Figure 35 A sectional view of still another intelligent mower provided by the embodiment of the present application;

[0073] Figure 36 A bottom view of the intelligent mower provided by the embodiment of the present application;

[0074] Figure 37 A perspective view of the partial structure of the intelligent mower provided by the embodiment of the present application;

[0075] Figure 38 A left view of the intelligent mower provided by the embodiment of the present application;

[0076] Figure 39 A bottom view of still another partial structure of the intelligent mower provided by the embodiment of the present application;

[0077] Figure 40 A sectional view of the simulation of the hand stretching into the bottom of the intelligent mower provided by the embodiment of the present application;

[0078] Figure 41 A schematic view of the simulation of the hand stretching into the bottom of the intelligent mower when the cutting mechanism is in the 30th, 40th and 50th gears provided by the embodiment of the present application;

[0079] Figure 42 A schematic view of the simulation of the hand stretching into the bottom of the intelligent mower when the cutting mechanism is in the 60th and 70th gears provided by the embodiment of the present application;

[0080] Figure 43 A schematic view of the simulation of the hand stretching into the bottom of the intelligent mower when the cutting mechanism is in the 80th and 90th gears provided by the embodiment of the present application. DETAILED DESCRIPTION

[0081] In order to enable persons skilled in the art to better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application.

[0082] The embodiments described herein are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments herein, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application. The term "comprising" in the specification and claims is an open term, which should be interpreted as "including but not limited to". The term "substantially" means within an acceptable error range, and those skilled in the art can solve the technical problems within the acceptable error range and substantially achieve the technical effects. In addition, in the embodiments of the present application, multiple means two or more. Those skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of different embodiments or examples without contradiction. The terms "first", "second", etc. in this paper are used to distinguish different directions, structures, components, etc., and do not represent the order.

[0083] Figure 1 A top view of a part of a smart mower assembly provided by an embodiment of the present application, Figure 2a A sectional view of a part of a smart mower assembly provided by an embodiment of the present application. Figure 2b A perspective view of a part of a smart mower assembly provided by an embodiment of the present application. Figure 3 A sectional view of another part of a smart mower assembly provided by an embodiment of the present application. See Figures 1-3 In an embodiment of the present application, a smart mower is provided, which comprises a device body, a cutting mechanism 3 and a first protective cover 1. Figures 1-3 The specific structure of the device body is not shown, and the appearance structure of the device body is not limited in this embodiment. In the direction of the device body, the device body has a front side, a rear side and left and right sides. The front side is located Figure 1 The arrow Y direction, the right side is located Figure 1 The arrow X direction. In the width direction of the device body, the device body has left and right sides, and the cutting mechanism 3 is eccentrically arranged at the bottom of the device body and close to the target side of the device body. The target side can be the left side or the right side. Alternatively, both left and right sides of the device body are target sides. The cutting mechanism 3 has a cutting area relative to the device body, which can be considered as the area that can be cut by the cutter on the cutting mechanism 3 when the cutting mechanism 3 rotates, and the edge of the cutting area is the cutter tip circle formed when the cutter rotates.

[0084] The cutting mechanism 3 is directed towards the ground and has a distance to the ground. The first guard 1 is arranged above the cutting mechanism 3 and has a first guard side wall 12 extending downwards (towards the ground). The first guard side wall 12 can provide an effective guard function at the target side, for example, to prevent the user from reaching the area where the cutting mechanism 3 is located and contacting the cutting mechanism 3 in an accidental situation, and also to prevent the fingers from contacting the cutting mechanism 3 when the user needs to carry the intelligent mower. The first guard 1 is provided with a gap 6 at the front and rear sides of the equipment body, so that the cutting mechanism 3 is partially exposed to the first guard 1. When the equipment body moves in the forward direction, the cutting mechanism 3 exposed at the gap 6 at the front side can effectively cut the grass, and when the equipment body moves in the backward direction, the cutting mechanism 3 exposed at the gap 6 at the rear side can effectively cut the grass.

[0085] As shown in Figure 2a and 2b , in order to improve the protection effect of the first guard side wall 12, the bottom of the first guard side wall 12 corresponding to the target side of the equipment body is provided with a folding edge 122 extending inward of the first guard 1 and lower than the cutting mechanism 3. In addition, in the horizontal direction, there is a gap between the end of the folding edge 122 and the cutting area of the cutting mechanism 3, which can also be considered as a gap between the end of the folding edge 122 and the knife tip circle. This gap can make the cutting mechanism 3 cut to the edge when trimming the edge of the lawn. Specifically, when the equipment body moves along the edge of the lawn, the grass on the edge of the lawn can extend into the area (cutting area) where the cutting mechanism 3 is located through the gap, and the rotating cutting mechanism 3 can cut off these grasses, so that the intelligent mower can cut to the edge when trimming the lawn. In addition, due to the existence of the gap, the area where the cutting mechanism 3 is located is not easy to accumulate weeds, and the cut weeds can be discharged through the gap instead of accumulating inside the first guard 1. In a specific embodiment, the cutting mechanism 3 is a rotatable cutter head, and the cutter head is provided with a knife protruding from the edge of the cutter head. When the cutter head rotates, the cutting edge of the knife will have a cutting force, so that the grass can be cut off. The cutting area mentioned above can be the area covered by the entire cutter head and the knife when rotating, or it can be the annular area formed by the rotation of the knife. The knife tip circle formed by the rotation of the knife can be considered as the outer ring edge of the cutting area.

[0086] The intelligent mower is shown in Figure 2a , 2b and Figure 3In one embodiment of the present application, the first protective cover 1 comprises a first upper protective wall 11, and the first protective side wall 12 is located at the edge of the first upper protective wall 11. The first upper protective wall 11 can prevent the cut grass from splashing everywhere, and the cut grass can be discharged from the gap 6 below and on both sides of the first protective cover 1. In the above, it is considered that the first upper protective wall 11 is arranged above the cutting mechanism 3, and the first protective side wall 12 is located on one side of the cutting mechanism 3.

[0087] Further, the first protective side wall 12 can be linear or arc-shaped. For example, in one embodiment of the present application, the first protective side wall 12 is arc-shaped and arranged outside the arc-shaped section of the cutting edge circle of the cutting mechanism 3, and the radius of curvature of the first protective side wall 12 is greater than the radius of the cutting edge circle. The plane where the cutting edge circle is located can be considered as the cutting plane mentioned above. The first protective side wall 12 extends towards the ground. The first protective side wall 12 not only protects the user, but also protects the rotating cutting mechanism 3.

[0088] The first protective side wall 12 can not only adapt to the shape of the cutting mechanism 3, but also adapt to the shape of the equipment body. For example, when the equipment body is square, the first protective side wall 12 can be linear, and the first protective side wall 12 is parallel to a certain line (parallel to the length direction of the equipment body) of the cutting mechanism 3 and arranged on one side of the cutting mechanism 3. When the equipment body is circular, the first protective side wall 12 can be arc-shaped.

[0089] Referring to Figure 2a and 2b , the first protective side wall 12 can effectively prevent the user from accidentally contacting the cutting mechanism 3 from the first direction (such as direction A in Figure 3 ), and the folded edge 122 can effectively prevent the user from accidentally contacting the cutting mechanism 3 from the second direction (such as direction B in Figure 3 ). In one specific embodiment, the folded edge 122 is connected perpendicularly to the bottom of the first protective side wall 12, and the cross section of the first protective side wall 12 is generally L-shaped. In addition, the included angle between the folded edge 122 and the first protective side wall 12 can also be obtuse or acute.

[0090] In specific implementation, the length r of the folded edge 122 can be 5.9-22mm. That is, as shown in Figure 2a , the size r from the end (i.e. the inner edge) of the folded edge 122 to the outer side wall of the first protective side wall 12 can be 5.9-22mm. For example, r can be 11mm or 21mm.

[0091] The folded edge 122 extends towards the cutting mechanism 3, and the end of the folded edge 122 can be located outside the cutting edge of the cutting mechanism 3. The end of the folded edge 122 has a gap with the cutting edge, as shown in Figure 2aIn the example shown, the gap I can be 0.1-5 mm. Because of the gap, the safety protection requirement can be met while the probability of grass accumulation is reduced. In addition, the grass at the edge of the lawn can also extend into the area where the cutting mechanism 3 is located through the gap, so as to be effectively cut off by the cutting mechanism, thereby achieving the function of cutting to the edge.

[0092] Further, the folded edge 122 is located on the side of the cutting mechanism 3 facing the ground. It can be considered that the edge on the side of the folded edge 122 facing the ground is an outer edge, and the edge on the side opposite to the ground is an inner edge. See Figure 3 In the vertical direction, the inner edge of the folded edge 122 has a gap M with the cutter. In one specific embodiment, the distance M between the inner edge of the folded edge 122 and the cutter can be 4-10 mm. For example, the distance M can be 7 mm. The gap between the inner edge of the folded edge 122 and the cutter not only effectively improves the chip removal capacity of the cutting mechanism 3, but also prevents the debris accumulated on the folded edge 122 from being cut again, thereby causing additional resistance.

[0093] In the horizontal direction, the distance J between the cutting edge of the cutter and the first protective side wall 12 is 6-27 mm, as shown in Figure 2a For example, the distance J can be 10 mm. Continuing to refer to Figure 2a As shown, the distance h between the bottom of the first protective side wall 12 and the ground can be 30-40 mm. For example, the distance h can be 36 mm. The distance H between the cutting mechanism 3 and the ground can be 40-50 mm. For example, the distance H can be 46 mm. It should be noted that the cutting mechanism 3 of some intelligent mowers is liftable. If the cutting mechanism of the intelligent mower in the embodiment is a liftable cutting disc, the distance H above refers to the size when the cutting mechanism 3 is in the lowest position.

[0094] Referring to Figure 1 , the gap at any of the left and right sides of the corresponding equipment body of the first protective cover 1 has two gap end points when projected on the plane where the cutting mechanism 3 is located. The gaps on the left and right sides can be symmetrical with respect to the reference axis. The reference axis passes through the center of the cutting mechanism and is parallel to the direction in which the intelligent mower travels. In one embodiment, there is no first protective side wall at the gaps on the left and right sides of the first protective cover 1. The first upper protective wall 11 of the first protective cover 1 has a shape and size corresponding to the cutting mechanism 3, such as the same shape and size as the cutting mechanism 3, or slightly smaller than the cutting mechanism 3. More specifically, as shown in Figure 1In the example shown, the cutting mechanism 3 includes a turntable 8 and a blade 4. The size of the first upper protective wall 11 can be the same as the tip circle of the blade 4, or the size of the first upper protective wall 11 can be the same as the size of the turntable 8. Alternatively, in another embodiment, there is no first protective sidewall or first upper protective wall at the notches on the left and right sides of the first protective cover 1, so that when viewed from below the first protective cover 1, the corresponding notches of the cutting mechanism are exposed. For the latter embodiment, the upper side of the exposed portion of the cutting mechanism can be shielded by the housing of the equipment body, or by setting another protective cover above the first protective cover.

[0095] like Figure 1 As shown, the two endpoints of the notch are points A and B in the diagram. In one specific embodiment, the central angle α corresponding to the lines connecting the two notch endpoints A and B to the center of the cutting mechanism 3 can be between 65 and 85 degrees. For example, the central angle α is 74 degrees. The more exposed area of ​​the cutting mechanism 3, the higher its risk. In this embodiment, the exposed part of the cutting mechanism is controlled within the above-mentioned central angle range, which balances the mowing effect and safety.

[0096] See Figures 1-3 In another embodiment of this application, a smart lawnmower is also provided, including: a device body, a cutting mechanism 3, a first protective cover 1, and a second protective cover 2. Along the width direction of the device body, the device body has a left side and a right side. The cutting mechanism 3 is eccentrically disposed at the bottom of the device body and close to the target side of the device body, which is either the left or right side. The first protective cover 1 is disposed above the cutting mechanism 3 and has a downwardly extending first protective sidewall 12. The bottom of the first protective sidewall 12 is lower than the blade on the cutting mechanism 3. The second protective cover 2 is disposed above the first protective cover 1, and the portion of the second protective cover 2 corresponding to the target side of the device body has a downwardly extending second protective sidewall 22. The second protective cover 2 extends the horizontal distance between the target side of the device body and the blade. The second protective sidewall 22 is located outside the first protective sidewall 12 and has a gap K with the first protective sidewall 12. The gap K can be 5–20 mm, for example, K = 16 mm or K = 8 mm.

[0097] In some embodiments, the bottom of the second protective sidewall 22 is higher on the outside and lower on the inside. For example, the bottom of the second protective sidewall 22 is a sloped surface that is higher on the outside and lower on the inside, or a stepped surface, etc. The thickness of the second protective sidewall 22 can be 25-35 mm.

[0098] See Figure 2a and Figure 3 As shown, the horizontal distance F between the tip of the cutting tool of the cutting mechanism 3 and the outer side wall of the second protective side wall 22 can be 55-100mm. For example, F = 60mm or F = 90mm.

[0099] In one embodiment, the second protective sidewall 22 can comprise a multi-layer sidewall. For example Figure 2a 、 2b and Figure 3 , the second protective sidewall 22 comprises a two-layer sidewall, referred to as a double-layer sidewall. The double-layer sidewall can comprise an inner protective wall 221 on the inner layer and an outer protective wall 222 on the outer layer. The bottom of the outer protective wall 222 is higher than the bottom of the inner protective wall 221. With the ground as a reference, the distance between the bottom of the outer protective wall 222 and the ground is greater than the distance between the bottom of the inner protective wall 221 and the ground.

[0100] The height difference D4 between the outer protective wall 222 and the inner protective wall 221 can be 3-20 mm. For example, Figure 3 , D4 = 5 mm. As shown in Figure 4 , D4 = 15 mm.

[0101] In some embodiments, the cutting mechanism 3 and the first protective cover 1 of the intelligent mower can be lifted to adapt to various working conditions. As shown in Figure 2a and 3 , the cutting mechanism 3 and the first protective cover 1 are in a first gear state, such as a 30 mm gear from the ground. At this time, the bottom of the first protective sidewall 12 is lower than the inner protective wall 221, and the height difference D1 therebetween can be 7-10 mm. As shown in Figure 4 , the cutting mechanism 3 and the first protective cover 1 are in a second gear state, assuming that the cutting mechanism 3 is 40 mm from the ground; at this time, the bottom of the first protective sidewall 12 and the bottom of the inner protective wall 221 have almost no height difference. As shown in Figure 5 , the cutting mechanism 3 and the first protective cover 1 are in a third gear state, assuming that the cutting mechanism 3 is 50 mm from the ground; at this time, the bottom of the first protective sidewall 12 is higher than the inner protective wall 221, and the height difference D1 therebetween can be 8-12 mm. As shown in Figure 6 , the cutting mechanism 3 and the first protective cover 1 are in a fourth gear state, assuming that the cutting mechanism 3 is 60 mm from the ground; at this time, the bottom of the first protective sidewall 12 is higher than the inner protective wall 221, and the height difference D1 therebetween can be 18-22 mm.

[0102] As described above Figure 2a 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 , in Figure 2a and Figure 3In the state shown, the inner protective wall 221 of the second protective cover 2 is higher than the first protective side wall 12 of the first protective cover 1, or is flush with the first protective side wall 12, and the foot, hand, etc. of a person can easily extend to the first protective side wall 12 from the bottom of the second protective cover. Due to the effect of the bottom folding edge 122 of the first protective side wall 12, the depth of the extension to the bottom of the equipment body is lengthened, and even if the fingers extend below the folding edge, the upper cutter is not easily touched by the fingers under the stop of the folding edge. Figure 5 and Figure 6 In the state shown, the inner protective wall 221 of the second protective cover 2 is lower than the first protective side wall 12, and the cutter and the first protective cover 1 are above, and the safety is sufficient, and the hand, foot, etc. of a person is not easily touched by the cutter.

[0103] The wall thickness of the inner protective wall 221 and the outer protective wall 222 can be equal or unequal. Figure 2a and Figure 3 The case where the wall thickness of the inner protective wall 221 and the outer protective wall 222 is equal is shown. Figure 2a The second protective cover includes a second upper protective wall 21 and a second protective side wall 22 in an integrated structure. The second protective side wall 22 can be formed by an integrated molding process or a material reduction process to form the inner protective wall 221 and the outer protective wall 222. Figure 3 In the example shown, the second upper protective wall 21 and the inner protective wall 221 can be in an integrated structure, and the outer protective wall 222 can be connected to the inner protective wall by an intermediate piece. As shown, Figure 3 The intermediate piece can be a component similar to an "n" shape.

[0104] The wall thickness of the inner protective wall 221 and the outer protective wall 222 should not be too thin, as too thin can easily deform and reduce safety, and should not be too thick, as too thick has a large mass. As shown, Figure 3 For example, the wall thickness M of the inner protective wall can be 2-8 mm. The wall thickness N of the outer protective wall can be 2-8 mm. As shown, Figure 2a In the example shown, the wall thickness of the inner protective wall 221 and the outer protective wall 222 is 6.5 mm. Figure 3 In the example shown, the wall thickness of the inner protective wall 221 and the outer protective wall 222 is 3 mm.

[0105] The gap V between the inner protective wall 221 and the outer protective wall 222 can be 15-30 mm. For example, Figure 2a As shown, V=18 mm. Figure 3 As shown, V=25 mm. The gap provided between the inner protective wall 221 and the outer protective wall 222 can effectively increase the thickness of the second protective side wall 22, so that the protection effect of the second protective cover 2 is better.

[0106] Further, as shown, Figure 2aAs shown, the inner protective wall 221 can be a structure with a thick upper part and a thin lower part. Referring to Figure 2a , the inner side wall of the outer protective wall 222 near the bottom is provided with a first inclined surface, so that the thickness of the outer protective wall 222 narrows from top to bottom. The outer side wall of the inner protective wall 221 at a height corresponding to the first inclined surface is provided with a second inclined surface, so that the thickness of the inner protective wall 221 narrows from top to bottom, and then extends downward with the narrowed thickness.

[0107] In this embodiment, the second protective cover 2 can be an upper cover of the device body or a base of the device body. Further, if the second protective cover 2 is a base of the device body, the first protective cover 1 and the cutting mechanism 3 are arranged on the base, and the first protective cover 1 and the cutting mechanism 3 can synchronously move up and down relative to the base. Specifically, the first protective cover 1 and the cutting mechanism 3 can act relative to the base to change the distance between the cutting mechanism 3 and the ground, so that the user can adjust the distance between the cutting mechanism 3 of the intelligent mower and the ground according to the required mowing height.

[0108] The protection mode provided by the scheme of the present embodiment will be described in combination with specific scenarios. Referring to Figures 7a-7d , the example shown in the figure uses a mechanical handling finger to simulate a human finger. In the first gear state, as shown in Figure 7a , the wrist of the handling finger 100 is stopped by the outer protective wall 222 and the inner protective wall 221, and the first finger joint can only extend to the bottom of the folded edge 122. The folded edge 122 prevents the finger from bending upward, so the finger does not touch the cutter. In the second gear state, as shown in Figure 7b , similar to the first gear state, the first finger joint extends to the bottom of the folded edge 122, and the folded edge prevents the finger from bending upward, so the finger does not touch the cutter. In the third and fourth gear states, as shown in Figure 7c and 7d , the wrist of the handling finger 100 is stopped by the outer protective wall 222 and the inner protective wall 221 on the outside, and the finger can extend to the inside of the second protective cover, but the cutter and the first protective cover 1 are located above. Even if the finger bends upward, the finger still cannot touch the cutter due to the presence of the folded edge 122.

[0109] Figures 7a-7d The finger protection state diagram corresponding to the second protective side wall 22 of the structure shown in Figure 2a . Figure 2a The height difference between the inner protective wall 221 and the outer protective wall 222 in the second protective side wall of the structure shown in Figure 3 is greater than the height difference between the inner protective wall 221 and the outer protective wall 222 in the structure shown in Figures 8a-8d The finger protection state diagram corresponding to the second protective side wall 22 of the structure shown in Figure 3 . FromFigures 8a-8d It can be seen that the inner protective wall 221 plays a role in increasing the thickness of the second protective side wall to lengthen the depth of the hand insertion. The cases of the fingers in different gear states are similar to the above-mentioned Figures 7a-7d The description is similar to the above-mentioned, and is not repeated here.

[0110] It should be noted here that the cutting mechanism 3 of some intelligent mowers is inclined. The front side of the cutting mechanism is slightly higher than the rear side of the cutting mechanism, or the rear side of the cutting mechanism is slightly higher than the front side of the cutting mechanism. The front side of the cutting mechanism corresponds to the front side of the device body of the intelligent mower, and the rear side of the cutting mechanism corresponds to the rear side of the device body of the intelligent mower. Figure 8d It is shown that in the state of the inclined cutting mechanism and the inclined cutter, the carrying fingers simulating human fingers are also not easy to touch the cutter due to the existence of the folding edge, and it can be seen that the scheme provided in the embodiment has good protection effect.

[0111] Figure 9 It is shown that Figure 2a The second protective side wall 22 of the structure shown corresponds to the adult foot protection state diagram. Figure 9 The adult foot size selected in the embodiment is a statistical value, such as the average value of 85% of adult feet, and the embodiment does not make specific limitation. For example Figure 9 As shown, the adult foot is directly stopped by the inner protective wall 221 and cannot be inserted further, so whether the cutter on the cutting mechanism and the first protective cover are in which gear state, the adult foot will be stopped by the inner protective wall 221.

[0112] Figures 10a-10c It is shown that Figure 3 The second protective side wall 22 (the height difference between the inner and outer protective walls is not large) of the structure shown corresponds to the adult foot protection state diagram. In the first gear state, as shown in Figure 10a , the adult foot is stopped by the first protective side wall 12. In the second gear state, which is not shown in the figure, it is similar to the first gear state, and the adult foot is still stopped by the first protective side wall 12 due to the low lifting height of the first protective cover and the cutter. In the third gear state, as shown in Figure 10b , the lifting height of the cutter and the first protective cover allows the adult foot to be inserted further, but the adult foot cannot touch the cutter due to the stopping of the inner protective wall 221 and the outer protective wall 222 and the folding edge on the first protective side wall 12. In the fourth gear state, as shown in Figure 10c , the inner protective wall 221 and the outer protective wall 222 limit the depth of the adult foot insertion, and the position of the cutter is relatively high, so the adult foot cannot touch the cutter.

[0113] Figure 11a and 11b It is shown that Figure 2aThe diagram shows the protective state of a standing child's foot corresponding to the second protective sidewall 22 of the structure shown. A child's foot is smaller than an adult's foot in both height and length. In the first position, as... Figure 11a Neither the inner protective wall 221 nor the outer protective wall 222 can provide a stopping effect, but the first protective side wall 12 can prevent the child's foot from extending further in. In the second position, if... Figure 11b With the blade and first protective cover raised in height, a child's foot can continue to extend inwards without the first protective side wall 12 stopping it. However, the longer inner protective wall 221 limits the depth of insertion. The child's foot cannot reach the blade due to the increased blade height. The same applies to the third and fourth gear positions.

[0114] Figures 12a-12c It shows Figure 3 The diagram shows the standing child's foot protection status corresponding to the second protective sidewall 22 of the structure shown. In the first position, as... Figure 12a As shown, because the inner protective wall 221 and the outer protective wall 222 have a large gap from the ground, they cannot provide a stopping effect, and the first protective side wall 12 stops the child's feet. In the second position, as Figure 12b As shown, the blade and the first protective cover are raised, allowing children's feet to extend further in, with the front of the child's foot positioned below the folded edge of the first protective sidewall 12. Even if the gap between the inner and outer protective walls and the ground is large enough for a child's foot to tilt upwards, the folded edge will prevent the child's foot from touching the blade. In the third position, as... Figure 12c As shown, the blade and the first protective cover are raised, providing more space at the bottom and allowing children to put their feet in more. However, the blade is still quite high, so children's feet will not touch it. The same applies to the fourth gear position.

[0115] Figure 13 It shows Figure 2a The diagram shows the kneeling child foot protection status corresponding to the second protective sidewall 22 of the structure shown. Figure 14 It shows Figure 3 The diagram shows the kneeling child foot protection configuration corresponding to the second protective sidewall 22 of the structure. In the first position, the child's foot will not touch the blade due to the stops provided by the inner protective wall 221 and the outer protective wall 222. The same applies to the second, third, and fourth positions.

[0116] If the structure and dimensions of the second protective cover are designed properly, safety regulations can be met even without folded edges on the first protective sidewall of the first protective cover. This application also provides a smart lawnmower. Figure 15As shown, the intelligent mower comprises a device body, a cutting mechanism 3, a first protective cover 1 and a second protective cover 2. In the direction of travel of the device body, the device body has a front side and a rear side. The cutting mechanism 3 is arranged at the bottom of the device body and close to the target side of the device body, and the target side is the front side or the rear side. The first protective cover 1 is arranged above the cutting mechanism 3, and the first protective cover 1 has a first protective side wall 12 extending downward; the bottom of the first protective side wall 12 is lower than the cutter 4 on the cutting mechanism 3. The second protective cover 2 is arranged above the first protective cover 1, and the part corresponding to the target side of the device body of the second protective cover 2 has a second protective side wall 22 extending downward. The second protective cover 2 extends the distance of the target side of the device body from the cutter 4 in the horizontal direction.

[0117] The second protective side wall can be a side wall with a certain thickness, or can include multiple layers of side walls. For example, Figure 15 In the example shown, the second protective side wall 22 is a double-layer side wall. The double-layer side wall includes an inner protective wall 221 on the inner side and an outer protective wall 222 on the outer side. The bottom of the outer protective wall 222 is higher than the bottom of the inner protective wall 221. As described above, the intelligent mower has multiple gear states, such as first, second, third, and fourth gear states. In the first gear state, the cutter 4 and the first protective cover 1 have the lowest height from the ground, and the second, third, and fourth gears are sequentially increased. For example, in the first gear state, the bottom of the inner protective wall 221 is higher than the bottom of the first protective side wall 12, as Figure 15 shown in the state.

[0118] Compared with the embodiments mentioned above, there is no folded edge on the first protective cover in this embodiment, so the distance from the ground of the inner protective wall and the outer protective wall needs to be limited in this embodiment to achieve better protection. For example, in one realizable technical solution, the height D2 of the bottom of the inner protective wall 221 from the ground can be 24-26 mm; for example, D2=25 mm. The height D3 of the bottom of the outer protective wall 222 from the ground is 42-46 mm; for example, D3=45 mm. In the horizontal direction, the distance F between the outer side wall of the outer protective wall and the cutting edge of the cutter is 58-62 mm, for example, F=60 mm.

[0119] Further, the height difference m between the bottom of the first protective side wall 12 and the cutter 4 is 7-15 mm. For example, m=14 mm.

[0120] In another realizable technical solution, similar to the above Figure 3The height difference between the inner and outer protective side walls is small. Since the first protective cover does not have a folded edge, the thickness of the second protective side wall can be increased, and / or the distance between the second protective side wall and the cutter in the horizontal direction can be increased. Increasing the thickness of the second protective side wall will increase the overall mass of the device body, so in the present embodiment, as shown in the figure, the second protective side wall is arranged in a vertical direction. Figure 16 As shown, the bottom of the second protective side wall (i.e. the lowest position) is 43-46mm above the ground, for example d=45mm. Correspondingly, in the horizontal direction, the distance F between the outer side wall of the outer protective wall and the cutting edge of the cutter is 88-92mm. For example, F=90mm.

[0121] Further, in the above embodiments, the cutter 4 can extend outwardly in a horizontal direction, or can extend outwardly in an inclined direction. For example Figure 8d When the cutter 4 extends outwardly in an inclined direction, the angle s between the inclined direction of the cutter 4 and the horizontal direction is in the range of 5-15 degrees. Arranging the cutter 4 in an inclined manner can effectively improve the chip removal function of the cutting mechanism 3.

[0122] The intelligent mower in the present application can be a mower robot or a manual mower, etc.

[0123] Figure 17 The structure of the intelligent mower with a cutting area on the inner side provided in the present embodiment is shown in the figure Figure 17 As shown.

[0124] In another embodiment of the present application, an intelligent mower is also provided, which includes a device body and a cutting mechanism 3, wherein the cutting mechanism 3 is arranged at the bottom of the device body, and the device body further comprises a walking wheel assembly 40 for moving the device body, the walking wheel assembly 40 includes a front wheel set 41 and a rear wheel set 42, wherein the front wheel set 41 is a directional wheel and can rotate 360 degrees, and the rear wheel set 42 is a driving wheel set and can provide forward power. During the movement of the device body, the cutting mechanism can cut and trim the grass in the target area passed by.

[0125] To prevent injury from the cutting mechanism 3 during operation, the cutting mechanism 3 is typically located in the center of the bottom of the device. The end of the cutting mechanism 3 is a certain distance from the edge of the device; this distance is the safety distance. If a person accidentally inserts a limb into the bottom of the lawnmower, it will not cause injury within this safety distance. Therefore, for higher safety, a larger safety distance is better. However, when the lawnmower reaches the edge of the target area, if there is an obstacle at that edge, such as a fence or wall, a certain clearance will be created between the lawnmower and the obstacle during its movement for safety. In this case, the grass within the safety distance and clearance area will not be cut, resulting in excessive grass remaining at the edge of the cut area.

[0126] To address the aforementioned problems, in one feasible embodiment of this application, the device body has a front side, a rear side, and left and right sides along the travel direction of the device body. The front side is located at... Figure 17 The middle arrow points in the Y direction, with the right side located... Figure 17 The arrow points in the X direction. Along the width of the device body, the device body has a left side and a right side. The cutting mechanism 3 is located between the front wheel assembly 41 and the rear wheel assembly 42, and is offset towards the right or left side of the bottom of the device body. The target side can be either the left or right side. Alternatively, both sides of the device body can be target sides. The cutting mechanism 3 has a first cutting area relative to the device body. The first cutting area can be considered as the area that the blade on the cutting mechanism 3 can cut when it rotates. The edge of the first cutting area is the blade tip circle formed when the blade rotates. Because the cutting mechanism 3 is offset towards the target side of the device body, when the intelligent lawnmower travels along the edge of the area to be cut, the cutting mechanism 3 can get closer to the edge of the area to be cut, and can fully cut the grass at the edge of the area to be cut, thus ensuring that less grass remains at the boundary of the area to be cut, and that the grass in the area to be cut is cut more cleanly.

[0127] Figure 18 This is a partial cross-sectional view of the intelligent lawnmower provided in the embodiments of this application. Please refer to it. Figure 17 refer to Figure 18 .

[0128] At the same time, in order to ensure the safety of the intelligent mower to the person, the intelligent mower further comprises a second protective cover 2 located outside the cutting mechanism 3 and having an inner protective wall 221 and an outer protective wall 222, the height of the inner protective wall 221 from the ground is lower than the height of the outer protective wall 222 from the ground, and the inner protective wall 221 and the outer protective wall 222 have a gap therebetween, which can be a carrying groove 224 capable of accommodating the fingers of a person to enter, so as to limit the width of the second protective cover 2, that is, the second protective cover 2 extends the distance of the equipment body target side from the cutting mechanism 3 in the horizontal direction.

[0129] In addition, the height of the inner protective wall 221 is lower than the height of the outer protective wall 222, that is, the bottom of the second protective cover 2 is inclined, so that when the foot of the person extends from the target side to the bottom of the equipment body, the position of the toe can extend to the inner side of the outer protective wall 222, but the foot can be prevented from continuing to extend due to the shielding of the inner protective wall 221, so that the foot of the person can be prevented from being injured. Or, when the hand of the person extends from the target side to the bottom of the equipment body, if the wrist is hindered by the outer protective wall 222, the wrist will be bent downward, and the palm will extend downward or obliquely downward. Since the second protective cover 2 has a certain width, the finger knuckles will abut against the bottom of the inner protective wall 221 and will not touch the cutting area; if the wrist is not hindered by the outer protective wall 222, since the bottom of the second protective cover 2 is inclined, the hand of the person will extend obliquely downward along the direction of the bottom of the second protective cover 2 to the bottom of the equipment body, and the hand will not directly touch the cutting area during the extending process, but will be hindered by the inner protective wall 221. Generally, the person will immediately retract the hand to avoid touching the cutting area after perceiving the hindrance of the inner protective wall 221.

[0130] It should be noted that the intelligent mower is provided with the cutting mechanism 3 at the bottom, which is common knowledge. Generally, the person will not intentionally extend the limbs into the bottom of the intelligent mower during the working process of the intelligent mower, and the extension of the limbs into the bottom of the intelligent mower is usually an unconscious behavior. Therefore, the inclined bottom of the second protective cover 2 can prompt the user that the limbs or other body parts have entered the bottom of the intelligent mower through touch perception when the user's limbs extend into the bottom of the intelligent mower, and the user will generally retract the limbs from the bottom of the equipment body after perceiving the prompt, so as to ensure safety.

[0131] In the embodiment, the width of the second protective cover 2 is B, and B>20mm. The length of an adult's hand is about 20mm, and the setting of B>20mm can effectively interfere with the extension of the hand when the hand extends from the bottom of the intelligent mower, so as to prompt the person.

[0132] In the embodiment, the distance between the outer protective wall 222 and the cutting area is F, 30mm≤F≤55mm, F>B, so that the cutting mechanism 3 and the second protective cover 2 have a certain distance, avoiding the second protective cover 2 interfering with the rotation of the cutting mechanism 3, and also avoiding the human arm entering from the bottom of the equipment body to touch the cutting mechanism 3.

[0133] In the embodiment, the height difference between the bottom of the inner protective wall 221 and the bottom of the outer protective wall 222 is D4, 10mm≤D4≤25mm.

[0134] It can be understood that if the height of the bottom of the inner protective wall 221 is less than the thickness of the finger, the inner protective wall 221 can ensure that the human hand cannot enter the bottom of the equipment body, and the human hand will not be injured. However, the height of the inner protective wall 221 cannot be too low, and the height of the inner protective wall 221 is too low, which will collide with the grass in the cutting area when the intelligent mower is running, and the grass in the cutting area will hinder the intelligent mower from moving forward, thereby increasing the load of the walking wheel assembly 40 and causing the power consumption. In addition, if the ground of the cutting area is uneven, it will also affect the walking of the intelligent mower. Therefore, in the embodiment, the height of the bottom of the inner protective wall 221 is D2, 30mm≤D2≤55mm, which not only will not affect the walking of the intelligent mower due to uneven road or grass, but also can fully cut the grass.

[0135] The intelligent mower of the embodiment can ensure that the cutting area has less grass through the motor biasing mode, and the setting of the carrying groove 224 of the second protective cover 2 not only provides carrying support but also limits the width of the second protective cover 2. The inclined bottom surface and the width of the second protective cover 2 can ensure the safety of the user in use.

[0136] In the embodiment, the height of the bottom of the inner protective wall 221 is D2, 30mm≤D2≤55mm, which not only will not affect the walking of the intelligent mower due to uneven road or grass, but also can fully cut the grass. Figure 17 Reference Figure 18 , one of the structures that can be implemented by the second protective cover 2 is that the second protective cover 2 can be a single wall, the bottom of the second protective side wall has a carrying groove 224, the outer side of the second protective side wall is an outer protective wall 222, and the inner side is an inner protective wall 221; another structure that can be implemented by the second protective cover 2 is that the second protective side wall includes spaced-apart layer walls, the gap between the outermost outer protective wall 222 and the adjacent wall forms a carrying groove 224. In the embodiment, the second protective side wall is two layer walls arranged at intervals, which is referred to as a double-layer side wall here. The double-layer side wall can include an inner protective wall 221 located in the inner layer and an outer protective wall 222 located on the outer side. The bottom of the outer protective wall 222 is higher than the bottom of the inner protective wall 221. With the ground as a reference, the distance between the bottom of the outer protective wall 222 and the ground is greater than the distance between the inner protective wall 221 and the ground.

[0137] To further improve the safety of people using intelligent lawnmowers, please refer to... Figure 18 In one feasible embodiment of this application, the intelligent lawnmower further includes a first protective cover 1. The first protective cover 1 is located between the second protective cover 2 and the cutting mechanism 3, and is positioned above the cutting mechanism 3. The first protective cover 1 has a downwardly extending first protective sidewall 12, the bottom of which is lower than the blade on the cutting mechanism 3. When a person's limb extends into the bottom of the intelligent cutting device, touches the second protective cover 2, and continues to extend towards the bottom of the intelligent lawnmower without retracting the limb, the first protective sidewall can prevent the limb from contacting the cutting mechanism 3 while extending towards the bottom of the intelligent lawnmower, protecting the limb from touching the cutting area. Furthermore, when there are branches or other debris in the area to be cut, if the debris extends beyond the second protective cover 2 and continues to extend into the bottom of the intelligent lawnmower during its movement, the first protective sidewall can prevent the debris from continuing to extend, avoiding damage to the cutting mechanism 3 caused by external objects.

[0138] Furthermore, the first protective sidewall 12 can be either straight or curved. For example, in one embodiment provided in this application, the first protective sidewall 12 is curved and located outside the curved segment of the blade tip circle of the cutting mechanism 3, and the radius of curvature of the first protective sidewall 12 is greater than the radius of the blade tip circle. The plane containing the blade tip circle can be considered as the aforementioned cutting surface. The first protective sidewall 12 extends towards the ground. The first protective sidewall 12 can protect not only the user but also the rotating cutting mechanism 3.

[0139] The first protective sidewall 12 can adapt to the shape of both the cutting mechanism 3 and the equipment body. For example, when the equipment body is square, the first protective sidewall 12 can be straight, and it can be parallel to a certain tangent line of the cutting mechanism 3 (parallel to the length direction of the equipment body) on one side of the cutting mechanism 3. When the equipment body is circular, the first protective sidewall 12 can be arc-shaped.

[0140] In one feasible embodiment, the first protective cover 1 may include a first upper protective wall 11, one end of which is connected to the bottom of the device body, and the other end located on the target side is connected to the upper end of the first protective sidewall, i.e., the first protective cover 1 is "L" shaped.

[0141] Figure 19 This is a partial cross-sectional view of a simulated intelligent lawnmower provided in an embodiment of this application. Figure 20 A partial cross-sectional view of a simulated hand reaching into the bottom of the device, provided in an embodiment of this application. Figure 1 , Figure 21 Please refer to the second partial cross-sectional view of the simulated hand reaching into the bottom of the device body provided in the embodiment of this application. Figures 19-21.

[0142] In some intelligent cutting machines, the cutter head used for cutting is capable of lifting movement, and the liftable cutter head can cut the grass into the required length according to the user's needs, and when the intelligent cutting device is not working, the cutter head can be lifted to the highest position, which not only ensures the safety of personnel but also ensures that the cutter head is not easily damaged by external objects. The cutting mechanism 3 of the embodiment can also be a liftable cutting mechanism 3. In order to ensure that it can adapt to various working conditions, another structure that can be realized of the first protective cover 1 is that the first protective cover 1 includes a first upper protective wall 11 and a first protective side wall 12, the first upper protective wall 11 is connected with the fixed shaft sleeve at the top end of the cutting mechanism 3, and the end on the target side is in communication with the upper end of the first protective side wall 12. The bottom of the first protective side wall 12 is provided with a folded edge 122 extending inward of the first protective cover 1 lower than the cutting mechanism 3, and there is a gap between the end of the folded edge 122 and the cutting area of the cutting mechanism 3 in the horizontal direction. The gap ensures that the first protective cover 1 does not interfere with the operation of the cutting mechanism 3.

[0143] When the intelligent mower is in working state, please refer to Figures 21-23 If the first protective cover 1 descends with the cutting mechanism 3 to be lower than the inner protective wall 221 of the second protective cover 2, the human body can be blocked by the first protective side wall even if it goes beyond the second protective cover 2. Even if it goes beyond the first protective side wall, the folded edge 122 lengthens the depth of the extension into the bottom of the device body, and the human finger is extremely difficult to touch the upper cutter even if it extends below the folded edge 122 and is stopped by the folded edge 122. If the first protective cover 1 descends with the cutting mechanism 3 to be flush with the inner protective wall 221 of the second protective cover 2, the folded edge 122 can further protect the human body. When the intelligent mower is in non-working state, the first protective cover 1 ascends with the cutting mechanism 3 to the bottom of the first protective side wall higher than the inner protective wall 221, at this time, even if the human body goes beyond the second protective cover 2 and extends to the bottom of the device body, it will not touch the cutting area. If the human body goes beyond the second protective cover 2 and bends upwards, the fingertips will also be blocked by the folded edge 122. It should be noted that when the cutting mechanism 3 is not liftable, the bottom of the first protective side wall can also be provided with a folded edge 122. Moreover, if both sides of the bottom of the device body are offset with the cutting mechanism 3, each offset cutting mechanism 3 is correspondingly provided with a first protective side wall.

[0144] Further, please refer to Figure 18The folding edge 122 is located on the side of the cutting mechanism 3 facing the ground, and the edge on the side of the folding edge 122 facing the ground can be regarded as an outer edge, and the edge on the side opposite to the ground can be regarded as an inner edge. In the vertical direction, the gap between the inner edge of the folding edge 122 and the cutter is M. In an embodiment, the distance M between the inner edge of the folding edge 122 and the cutter can be 4-10 mm. For example, the distance M can be 7 mm. The gap between the inner edge of the folding edge 122 and the cutter not only effectively improves the chip removal capacity of the cutting mechanism 3, but also prevents the debris accumulated on the folding edge 122 from being cut again, thereby causing additional resistance.

[0145] Figure 22 Structure diagram of the intelligent mower provided in the embodiment of the application Figure 1 , Figure 23 Structure diagram of the intelligent mower provided in the embodiment of the application Figure 18 、 Figure 22 and Figure 23 .

[0146] In an embodiment, the cutting mechanism 3 can be located in the following position: the front wheel group 41 and the rear wheel group 42 are connected end to end to form a closed shape, and the space inside the closed shape is the inner side, and the space outside the closed shape is the outer side, that is, the walking wheel group divides the bottom of the device body into the inner side or the outer side of the walking wheel group. The cutting mechanism 3 is located on the inner side, and the diameter of the cutting mechanism 3 is greater than half the width of the bottom of the device body, and the outer side of the second protective cover 2 is flush with the outer side of the corresponding side of the device body and the outer side of the rear wheel group 42. Not only can the cutting mechanism 3 fully cut the grass in the cutting area and ensure that the boundary grass is less, but also the device body as a whole is more beautiful.

[0147] Another position of the cutting mechanism 3 can be implemented as follows: the front wheel group 41 has a front wheel rotation area relative to the device body, the cutting mechanism 3 has a first cutting area relative to the device body, and part of the first cutting area is located on the outer side of the rear wheel group 42 and the front wheel rotation area. That is, part of the first cutting area is located on the inner side, and part of the first cutting area is located on the outer side. In this way, the intelligent cutting device covers the grassland on the outer side of the walking wheel group 40 with the first cutting area during walking, further shortens the distance between the first cutting area and the boundary of the cutting area, and further reduces the amount of boundary grass. In order to ensure safety, the outer side of the second protective cover 2 exceeds the outer side of the rear wheel group, so as to cover the first cutting area in the second protective cover. At this time, the second protective cover 2 can be a side structure of the upper cover of the device body or a separate part installed on the side of the device body.

[0148] In order to increase the mowing efficiency and improve the mowing area, in an achievable embodiment of the present application, the intelligent lawn mower further includes a second cutting mechanism. The second cutting mechanism has a second cutting area relative to the device body. The second cutting area is located within the walking wheel assembly, and the diameter of the second cutting mechanism is 1.5 times the diameter of the cutting mechanism. Since the cutting mechanism is offset to one side of the device body and is located between the front wheel set 41 and the rear wheel set 42, the diameter of the cutting mechanism is limited to be relatively small, and the area of the first cutting area is small. However, the second cutting mechanism is located in the area inside the walking wheel assembly 40, and the space is relatively large. Therefore, the diameter of the second cutting mechanism can be larger than the diameter of the cutting mechanism 3. In this embodiment, the diameter of the second cutting mechanism is 1.5 times the diameter of the cutting mechanism, so that the cutting area is 3 times larger than the first cutting area. This can not only ensure the problem of less grass left at the boundary of the待切割区域 (to-be-cut area), but also improve the cutting efficiency of the intelligent cutting machine, shorten the working line, and save electric energy.

[0149] Another achievable structure of the cutting mechanism 3 is that a cutting mechanism is eccentrically arranged on both sides of the bottom of the device body, and the cutting areas of the two cutting mechanisms do not interfere with each other. When encountering a narrow strip-shaped to-be-cut area, the intelligent cutting mechanism 3 only needs to make one trip to complete the cutting of all the grass on both sides, thus improving the efficiency and saving electric energy. At this time, the first protective cover 1 is in the shape of "冂".

[0150] As an optional solution, please refer to Figure 23 , there is a distance L between the main cutting area and the side cutting area or between two cutting areas, and L≥10mm. The spacing of 10mm can not only accommodate the installation error, but also make the two cutting areas as close as possible without interfering with each other, which not only ensures that the cutting range is as large as possible, but also ensures sufficient cutting and less grass left.

[0151] Figure 24 A schematic diagram of the tool and the first protective cover in the intelligent lawn mower provided by the embodiment of the present application in the 40th gear state. Please refer to Figure 1 See Figure 24 .

[0152] In another embodiment of the present application, a smart mower is also provided, comprising: a device body, a cutting mechanism 3, a first protective cover 1 and a second protective cover 2. The cutting mechanism 3 has a cutting area relative to the device body, which can be considered as the area that can be cut by the cutter on the cutting mechanism 3 when the cutting mechanism 3 rotates, and the edge of the cutting area is the cutter tip circle formed when the cutter rotates. The device body has a left side and a right side along the width direction of the device body. The cutting mechanism 3 is eccentrically arranged at the bottom of the device body and close to the target side of the device body, and the target side is the left side or the right side. The first protective cover 1 is arranged above the cutting mechanism 3, and the first protective cover 1 has a first protective side wall 12 extending downward. The bottom of the first protective side wall 12 is lower than the cutter on the cutting mechanism 3. The second protective cover 2 is arranged above the first protective cover 1, and the part corresponding to the target side of the device body of the second protective cover 2 has a second protective side wall 22 extending downward. The distance between the outer side of the second protective side wall 22 and the cutter tip of the outermost end of the cutting mechanism 3 is F, and 45mm≤F≤55mm. In the embodiment, F=50mm. The larger F is, the more beneficial it is to protect the limbs that extend into the bottom end of the target side of the device body, but the larger F is, the higher the cutting grass rate is, so in the case of ensuring the safety of the limbs, the smaller F is the better.

[0153] It can be understood that the smaller the distance G between the bottom end of the second protective side wall 22 and the ground is, the better, but if the height G of the bottom end of the second protective side wall 22 from the ground is too small, although it can effectively prevent the limbs from extending in, but in the process of the smart cutting device moving, the second protective side wall 22 will abut against the grass in the cutting area, not only will be blocked by the force of the grass, but also will be blocked by the road when passing through the uneven road, thereby causing the problem of difficulty in moving of the smart cutting device. Therefore, the height G of the bottom end of the second protective side wall 22 from the ground cannot be too low. In the embodiment, G=60mm. Generally, when the limbs enter the bottom end of the target side of the device body, the person is in a standing or squatting state, at this time, if the limbs want to extend into the bottom end of the device body, they will extend obliquely downward from the bottom end of the target side of the device body, and G=60mm can effectively prevent the wrist from directly extending obliquely downward through the bottom end of the device body when the person is in a standing or squatting state, and the distance also does not hinder the walking of the smart mower.

[0154] In order to further ensure the safety of the limb that extends into the bottom end of the target side of the equipment body, in an embodiment that can be implemented, the second protective side wall 22 has a protection structure 223 on the side facing the first protective side wall 12, the lower side of the protection structure 223 can rotate towards the first protective side wall 12, and the bottom end of the protection structure 223 is lower than the bottom end of the second protective side wall 22. When the limb enters the bottom end of the target side of the equipment body, it will touch the protection structure 223. Generally, the limb is accidentally extended to the bottom of the target side of the equipment body without being aware of it, so when the limb touches the protection structure 223 while extending towards the bottom of the equipment body, the user will realize that the limb has entered the bottom end of the equipment body, and at this time the user will retract the limb to avoid danger. Moreover, the protection structure 223 can extend the distance between the equipment body target side and the cutter of the cutting mechanism 3 in the horizontal direction, so that the limb needs to extend a certain distance before it can touch the cutter during the process of extending towards the bottom end of the equipment body target side, thereby avoiding the limb being easily in contact with the cutter and being cut by the cutter.

[0155] Specifically, referring to Figure 24 As an embodiment that can be implemented, the protection structure 223 includes a bracket 2231 and a rotating plate 2232, wherein one end of the bracket 2231 is arranged in the horizontal direction on the side of the second protective side wall 22 facing the first protective side wall 12, and the other end extends in the vertical direction to the same level as the bottom end of the second protective side wall 22, and the end of the bracket 2231 extending in the horizontal direction extends the distance between the second protective side wall 22 and the cutter of the cutting mechanism 3.

[0156] The rotating plate 2232 is rotatably arranged on the end of the bracket 2231 extending in the vertical direction, and faces the side of the second protective side wall 22, and the bottom end of the rotating plate 2232 is lower than the bottom end of the second protective side wall 22. The horizontal distance between the rotating shaft of the rotating plate 2232 and the second protective side wall 22 is O, and O≤3mm, so that the rotating plate 2232 can rotate around the rotating shaft towards the second protective side wall 22 until it abuts against the second protective side wall. Thus, when the limb enters the bottom end of the target side of the equipment body, the limb can touch the rotating plate 2232 to prompt the user that the limb has entered the bottom end of the equipment body, and when the limb continues to extend towards the bottom end of the equipment body, the rotating plate 2232 will rotate with the limb until it abuts against the second protective side wall 22, at which time the rotating plate 2232 can block the limb from continuing to enter. As an optional solution, when the rotating plate 2232 rotates to abut against the second protective side wall 22, the distance between the bottom end of the rotating plate 2232 and the ground is between 50mm and 55mm, which can be 52mm or 53mm. The bottom end of the rotating plate 2232 guides the limb to continue to extend obliquely downwards along the bottom end of the rotating plate 2232 until it touches the ground.

[0157] Although the bottom end of the rotating plate 2232 has the effect of guiding the movement of the limbs, if the limb end bends upward beyond the bottom end of the first protective side wall 12 after reaching the bottom end of the rotating plate 2232, there is still a risk of touching the cutting area. In order to prevent the occurrence of the above danger, in some embodiments of the application, the first protective side wall 12 has a protective plate 123 on the side facing the cutting mechanism 3. When the limb end bends upward beyond the bottom end of the first protective side wall 12, the limb end can be blocked by the protective plate 123, thereby avoiding being cut.

[0158] Specifically, please continue to refer to Figure 24 In some embodiments of the application, the protective plate 123 has a structure that includes a guide portion and a longitudinal portion. One end of the guide portion is connected to the first protective side wall 12, and the guide portion and the first protective side wall 12 form an acute angle. One end of the longitudinal portion is connected to the other end of the guide portion, and the other end of the longitudinal portion extends towards the ground to be flush with the bottom end of the first protective side wall. The inclined guide portion not only avoids the cutting area, but also serves as a guide structure for the grass to be cut, so that the grass to be cut can enter the gap between the protective plate 123 and the cutting mechanism 3 and then extend along the protective plate 123, avoiding the protective plate 123 blocking the grass to be cut from entering the cutting area. In addition, the inclined structure allows the protective plate 123 and the first protective side wall 12 to have a top-end inclined accommodation cavity. When the limb end passes through the second protective side wall 22, the limb end is blocked by the protective plate 123 and enters the accommodation cavity. At this time, the limb end is blocked by the top end of the inclined accommodation cavity when it is stretched upward, and the limb end slides down to the bottom end of the protective plate 123 flush with the first protective side wall 12 during movement along the top end of the accommodation cavity. At this time, the limb end extends horizontally, and due to physiological characteristics, the limb such as a hand or foot cannot stretch the joint in the opposite direction, or because the protective plate 123 extends the distance between the protective side wall and the cutting area, when the limb extends horizontally, the bendable joint of the limb end is within the protective range of the protective plate 123, so that the limb end cannot be bent upward, ensuring that the limb does not come into contact with the cutting area.

[0159] Further, in order to fully cut the grass in the cutting area, the grass to be cut can enter between the cutting mechanism and the first protective side wall 12. The distance between the cutting mechanism and the bottom end of the longitudinal portion in the vertical direction is M, and 12mm≤M≤15mm. The distance between the cutting mechanism and the bottom end of the longitudinal portion in the horizontal direction is P, and mm0≤P≤3mm. Thus, the connection between the guide portion and the longitudinal portion has a gap with the cutting mechanism 3, and the grass to be cut can enter between the guide portions of the cutting mechanism 3 and the guide portions, and incline towards the guide portions. As the grass near the cutting mechanism 3 is gradually cut, the grass near the guide portions gradually straightens, so that it is cut by the cutting mechanism 3, reducing the amount of grass left and making the cutting coverage wider.

[0160] In order to ensure that the parts on the intelligent mower are fully utilized, the second protective cover 2 is the upper cover of the device body or the base of the device body. On some intelligent cutting machines, the cutter head on the cutting mechanism 3 is movable up and down. The up-down movable cutter head can cut the grass to the required length according to the user's needs, and when the intelligent cutting device is not working, the cutter head can be lifted to the highest position, which not only ensures the safety of personnel but also ensures that the cutter head is not easily damaged by external objects. When the second protective cover 2 is the base of the device body, the cutting mechanism 3 of the embodiment can also be a up-down movable cutting mechanism 3, and the first protective cover 1 and the cutting mechanism 3 can move up and down relative to the base to ensure that the first protective cover 1 can protect the limbs that extend into the bottom of the target side of the device body from being injured at any height of the cutting mechanism 3.

[0161] Next, the intelligent mower will be described in detail in combination with the cutting mechanism at different height positions.

[0162] Figure 25 The cutting mechanism provided by the embodiment of the present application is in the 80th position state, please refer to the following figure Figure 25 When the cutting mechanism 3 is in the 80th position, the distance between the cutter head of the cutting mechanism 3 and the ground is 80mm, the vertical distance between the cutter head and the rotating plate 2232 is 30mm if the distance from the ground of the rotating plate 2232 is 50mm, and if the limb extends from the bottom end of the target side of the intelligent mower, it will first touch the rotating plate 2232. With the continued extension of the limb, the rotating plate 2232 rotates towards the first protective side wall 12 along with the limb until it abuts against the second protective side wall 22, and the limb bends upwards after passing the bottom end of the rotating plate 2232. It can be understood that due to the action of the second protective side wall 22 and the protection structure 223, the limb passing the bottom end of the rotating plate 2232 is the bendable end of the limb, that is, the fingertips, which cannot contact the cutting area under the action of the vertical distance between the protective plate 123 and the cutter head and the rotating plate 2232, thereby ensuring that the limb will not be injured.

[0163] Figure 26 The cutting mechanism provided by the embodiment of the present application is in the 90th position state, Figure 27 The cutting mechanism provided by the embodiment of the present application is in the 100th position state, please refer to the following figure Figure 26 And Figure 27 .

[0164] From the above, when the cutting mechanism 3 is in the 80th gear, the limb extends to the bottom end of the target side of the intelligent mower, and the fingertip cannot contact the cutting area. When the cutting mechanism 3 is in the 90th gear, the vertical distance between the cutter head and the rotating plate 2232 is 40 mm. When the cutting mechanism 3 is in the 100th gear, the vertical distance between the cutter head and the rotating plate 2232 is 50 mm, which is greater than the distance when the cutting mechanism 3 is in the 80th gear. Therefore, when the cutting mechanism 3 is in the 90th gear and the 100th gear, the fingertip cannot contact the cutting area.

[0165] Figure 28 The cutting mechanism in the 70th gear state provided by the embodiment of the application is shown in the schematic view, for reference Figure 28 .

[0166] Since the height of the second protective cover 2 is constant, the process of the limb being shielded by the second protective cover 2 is the same as when the cutting mechanism 3 is in the 80th gear, and will not be repeated again.

[0167] When the cutting mechanism 3 is in the 70th gear, the ground clearance of the cutting mechanism 3 is 70 mm, and the vertical distance between the cutter head and the rotating plate 2232 is 20 mm. After the end of the limb passes through the rotating plate 2232, it is bent upwards. At this time, the fingertip is also bent upwards. Under the action of the vertical distance between the protective plate 123 and the cutter head and the rotating plate 2232, the fingertip cannot contact the cutting area, so as to ensure that the limb will not be injured.

[0168] Figure 29 The cutting mechanism in the 60th gear state provided by the embodiment of the application is shown in the schematic view, for reference Figure 29 .

[0169] When the cutting mechanism 3 is in the 60th gear, the ground clearance of the cutting mechanism 3 is 60 mm. At this time, the bottom end of the first protective side wall 12 is lower than the ground clearance of the lowest end of the rotating plate 2232. After the limb passes through the second protective side wall 22, it needs to pass through the first protective side wall 12 before being bent upwards. In the process of bending, the lowest end of the protective plate 123 is abutted, so that the end of the limb cannot be bent upwards any more to avoid being cut.

[0170] Figure 30 The cutting mechanism in the 50th gear state provided by the embodiment of the application is shown in the schematic view, for reference Figure 30 .

[0171] When the cutting mechanism 3 is in the 50th gear, the ground clearance of the cutting mechanism 3 is 50mm, at this time, the bottom end of the first protective side wall 12 is about 13mm lower than the lowest end of the turnover plate 2232, after the limb passes through the second protective side wall 22, the wrist needs to be bent downward at a certain angle when passing through the first protective side wall 12, at this time, the angle of the end of the limb bent upward after passing through the first protective side wall 12 will be smaller, and the end of the limb is bent upward to the maximum angle and abuts against the protective plate 123, thereby protecting the limb from the cutting area.

[0172] Figure 31 The cutting mechanism provided by the embodiment of the present application is in the 40th gear state, for reference Figure 31 .

[0173] When the cutting mechanism 3 is in the 40th gear, the ground clearance of the cutting mechanism 3 is 40mm, at this time, the bottom end of the first protective side wall 12 is about 23mm lower than the lowest end of the turnover plate 2232, after the limb passes through the second protective side wall 22, the joint of the end of the limb cannot pass through the first protective side wall, so that the end of the limb cannot continue to be bent upward, thereby protecting the limb from the cutting area.

[0174] Referring to Figures 32-35 In an embodiment of the present application, another rotating plate 2232 is also provided, in combination with the above embodiments, the intelligent mower includes at least one rotating plate 2232, and the rotating plate 2232 corresponding to the target side is rotatably connected to the first protective side wall 12 and / or the second protective side wall 22. The rotating plate 2232 extends downward and rotates towards the direction close to the cutting mechanism. The rotating plate 2232 can be arranged on the end position of the first protective side wall 12, or the rotating plate 2232 can be arranged on the end position of the second protective side wall 22. The rotating plate 2232 extends downward, which can be understood as extending in the direction close to the ground, so as to block part of the gap between the cutting mechanism 3 and the ground, when the hand or foot of the user reaches the bottom of the equipment body from the target side, the rotating plate 2232 can provide effective protection to prevent the hand or foot of the user from contacting the cutting mechanism 3. In addition, since the rotating plate 2232 can rotate freely, when the intelligent mower encounters an obstacle, the rotating plate 2232 can rotate to avoid the obstacle, thereby not affecting the passing performance and cutting performance of the intelligent mower.

[0175] Referring to Figures 32-36In an embodiment of the present application, an intelligent mower is also provided, which comprises a device body, a cutting mechanism 3, a first protective cover 1, a second protective cover 2, and a rotating plate 2232. In the direction of arrow X, the device body has a left side and a right side, and the cutting mechanism 3 is arranged at the bottom of the device body and close to a target side of the device, which is the left side and / or the right side of the device body. The first protective cover 1 is arranged above the cutting mechanism 3, and the first protective cover 1 has a first protective side wall 12 extending downward, and the bottom of the first protective side wall 12 is lower than the cutter on the cutting mechanism 3. Figure 32

[0176] Further, the second protective cover 2 is arranged outside the first protective cover 1, and the part of the second protective cover corresponding to the target side of the device body has a second protective side wall 22 extending downward. In the width direction of the intelligent mower, the first protective side wall 12 and the second protective side wall 22 are arranged at intervals. The rotating plate 2232 is rotatably connected to the first protective side wall 12 and / or the second protective side wall 22 corresponding to the target side. In the vertical direction, the rotating plate 2232 extends downward, and when the rotating plate 2232 is subjected to an external force, the rotating plate 2232 can rotate towards the cutting mechanism 3. When the external force is removed, the rotating plate 2232 will reset.

[0177] In order to reduce the walking resistance caused by the friction between the grass surface and the body, the bottom end of the body of the intelligent mower is away from the ground by a distance, which allows a person's foot to be inserted below the body and close to the cutter strip as a cutting element. For safety considerations, the cutting mechanism 3 of the intelligent mower is arranged far away from the boundary of the body, so that the operator will not touch the cutting element even if the foot is inserted below the body. However, when the cutting mechanism 3 is far away from the boundary of the body, it will cause the problem of not cutting to the edge, for example, when the cutting mechanism 3 encounters a corner, a fence, a step or other obstacles, a relatively wide area that cannot be cut will be formed. These relatively wide areas that cannot be cut by the intelligent mower often need to be manually trimmed, which is time-consuming and laborious. To solve the corresponding cutting-to-edge requirement without affecting the safety protection of the user, the conventional technology is to provide a protective mechanism at the bottom of the cutting system, but the corresponding protective mechanism has the problems of grass compression, grass entanglement, mud entanglement, etc., which affect the cutting effect of the machine and reduce the passing performance of the machine.

[0178] In order to solve the above technical problems, in the technical solution of the present application, the rotatable rotating plate 2232 is arranged on the first protective side wall 12 and / or the second protective side wall 22, so as to meet the cutting safety protection without affecting the cutting performance of the cutting mechanism and the passing performance of the intelligent mower.

[0179] Further, referring to Figures 32-37 ​The rotating plate 2232 can be connected to the first protective sidewall 12 and / or the second protective sidewall 22 via the rotating shaft 19. When the rotating plate 2232 is provided on the first protective sidewall 12, the rotating plate 2232 is connected to the end of the first protective sidewall 12 via the rotating shaft 19 (e.g., Figure 34 As shown in Figure a), or the rotating plate 2232 is connected to the outer wall surface of the first protective sidewall 12 via the rotating shaft 19 (as shown in Figure a). Figure 34 (As shown in Figure c). Of course, the rotating plate 2232 can also be connected to the end of the protective structure 17 via the rotating shaft 19 (e.g., Figure 34 As shown in Figure b), the rotating plate 2232 and the first protective sidewall 12 form a hinge-like structure, allowing the rotating plate 2232 to rotate or swing relative to the first protective sidewall 12 at a certain angle. When the rotating plate 2232 rotates, the distance between its end and the ground increases. The rotating plate 2232 only rotates under the action of an external force; when the external force is removed, the rotating plate 2232 returns to its vertical position under the action of gravity.

[0180] Similarly, when a rotating plate 2232 is provided on the second protective sidewall 22, the rotating plate 2232 is connected to the end of the second protective sidewall 22 via a rotating shaft 19 (e.g., Figure 34 (as shown in Figure e) or the inner wall surface of the second protective sidewall 22 (such as...) Figure 34 As shown in Figure d), the rotating plate 2232 can also be disposed on the outer wall surface of the second protective sidewall 22 (e.g., Figure 34 As shown in Figure f, the second protective sidewall 22 is a double-layered sidewall, comprising an inner protective wall 221 on the inner side and an outer protective wall 222 on the outer side. Therefore, the rotating plate 2232 can be disposed on either the inner protective wall 221 or the outer protective wall 222. Similarly, the rotating plate 2232 can be disposed on either the inner or outer wall surface of the inner protective wall 221 or the outer protective wall 222. Alternatively, the rotating plate 2232 can be disposed between the first and second protective sidewalls via a rotating shaft. For example, at a location between the first and second protective sidewalls—this embodiment does not limit this location—the rotating plate is located at that position.

[0181] Of course, while providing protection, the rotating plate 2232 also needs to prevent contact with the cutting mechanism due to excessive rotation angle. In one embodiment, the rotating plate 2232 rotates about a rotation axis so that the rotation angle α of the rotating plate relative to the first protective sidewall 12 or the second protective sidewall 22 is in the range of [40 degrees to 70 degrees]. In a preferred embodiment, the rotation angle α is 50 degrees. Alternatively, the angle at which the rotating plate is tilted relative to the first or second protective sidewall can be in the range of [40 degrees to 70 degrees].

[0182] Further, seeFigure 35 When the rotating plate 2232 is connected to the first protective side wall 12, the distance M2 between the bottom of the rotating plate 2232 and the bottom of the first protective side wall 12 is 5mm-15mm. It can be understood that the distance M2 by which the rotating plate 2232 extends downward from the bottom of the first protective side wall 12 is 5mm-15mm, and in this embodiment, the distance M2 is 10mm. See Figure 32 When the rotating plate 2232 is connected to the second protective side wall 22, the distance M1 between the bottom of the rotating plate 2232 and the bottom of the second protective side wall 22 is 10mm-30mm, and in this embodiment, the distance M1 is 15mm.

[0183] Although the rotating plate 2232 can bring better protection effect, since the rotating plate 2232 extends towards the ground, the distance between the rotating plate 2232 and the ground will inevitably be reduced, and the passability and obstacle-crossing ability of the intelligent mower will be affected.

[0184] In order to avoid that the rotating plate 2232 seriously affects the passability and obstacle-crossing ability of the intelligent mower, in an embodiment provided in the present application, see Figure 37 and Figure 38 A guide slope 2233 is arranged on the rotating plate 2232 along the length direction of the rotating plate 2232, which can be arranged at the front end of the rotating plate 2232, or at the rear end of the rotating plate 2232, or at both the front end and the rear end of the rotating plate 2232. Generally, the length direction of the rotating plate 2232 is the same as the length direction of the intelligent mower, and the guide slope 2233 on the rotating plate 2232 can drive the rotating plate 2232 to automatically rotate when encountering obstacles such as grass and soil, so as to avoid continuous collision between the rotating plate 2232 and the obstacles, and damage to the rotating plate 2232.

[0185] Specifically, in a specific implementation, see Figure 37 and Figure 38 The front end of the rotating plate 2232 is provided with a guide slope 2233, which faces the ground. It can be understood that, as Figure 38As shown, the included angle between the guide slope 2233 and the vertical center line of the device body is β, and the included angle β ranges from 30 degrees to 70 degrees, and in the embodiment, the included angle β is 60 degrees. If the intelligent mower encounters obstacles such as weeds and soil during forward movement, the obstacles will generate a force on the guide slope 2233, and under the action of the force, the rotating plate 2232 will rotate, thereby effectively avoiding direct contact with the obstacles to avoid the intelligent mower being stuck at the obstacles. Of course, the intelligent mower also exists in the case of reversing, and the rear end of the rotating plate 2232 may contact the obstacles when reversing, so in order to avoid the intelligent mower being stuck during reversing, the same guide slope 2233 can also be arranged at the rear end of the rotating plate 2232.

[0186] In the embodiment in the foregoing, the first protective cover 1 and the cutting mechanism 3 can synchronously move up and down relative to the base to change the distance between the cutting mechanism 3 and the ground, and then the user can adjust the distance between the cutting mechanism 3 of the intelligent mower and the ground according to the required mowing height. When the rotating plate 2232 is arranged on the first protective side wall 12, since the bottom end of the rotating plate 2232 is lower than the bottom end of the first protective side wall 12, as the first protective cover 1 descends, it is likely that the distance between the rotating plate 2232 and the ground is too small, thereby seriously affecting the passing performance and cutting performance of the intelligent mower.

[0187] Therefore, when the first protective cover 1 and the cutting mechanism 3 move downward relative to the base to a certain limit value, the rotating plate 2232 must be limited to continue to move downward with the first protective cover 1, thereby avoiding that the distance between the rotating plate 2232 and the ground is too small. Referring to Figure 35 In an embodiment provided in the present application, the first protective side wall 12 is provided with a sliding seat 23, when the rotating plate 2232 is connected to the first protective side wall 12, the rotating plate 2232 can be slidably arranged in the sliding seat 23, and the rotating plate 2232 can slide up and down relative to the first protective side wall 12 in the vertical direction. Specifically, the sliding seat 23 on the first protective side wall 12 is arranged in the vertical direction, and the rotating plate 2232 can slide up and down in the sliding seat 23, when the rotating plate 2232 slides downward, the end of the rotating plate 2232 approaches the ground, and when the rotating plate 2232 slides upward, the end of the rotating plate 2232 is away from the ground.

[0188] Generally, the rotating plate 2232 is located at the bottom end of the sliding seat due to the effect of gravity. When the first protective cover 1 is lowered too low, the rotating plate 2232 can slide upward relative to the first protective side wall 12, so that the distance of the end of the rotating plate 2232 is kept within a safe range. For example, a driving device can be arranged in the sliding seat 23, which can drive the rotating plate 2232 to slide up and down. When it is detected that the end of the rotating plate 2232 is too close to the ground or encounters an obstacle, the driving device drives the rotating plate 2232 to slide upward to avoid the rotating plate 2232 from contacting the obstacle.

[0189] Further, referring to Figure 35 The intelligent mower further comprises a limiting piece 16. When the rotating plate 2232 moves downward with the first protective side wall 12 relative to the device body to a limit position, the limiting piece 16 can abut against the rotating plate 2232 to prevent the rotating plate 2232 from continuing to move downward to be too close to the ground. The limit position is a position preset according to use conditions, which is not specifically limited.

[0190] The working process of the limiting piece 16 will be described in detail below. It is mentioned above that the intelligent mower has multiple gears. The distance between the first protective side wall 12 and the ground is different under different gears. Figures 7a-7d At the first gear, the distance between the first protective side wall 12 and the ground is the closest, and at the fourth gear, the distance between the first protective side wall 12 and the ground is the farthest. When the intelligent mower is at the fourth gear, the rotating plate 2232 can slide downward with the first protective side wall 12, and the limiting piece 16 is not connected with the rotating plate 2232 or does not act on the rotating plate 2232. With the adjustment of the gear of the intelligent mower, for example, when the intelligent mower is at the second gear, the limiting piece 16 abuts against the rotating plate 2232. When the intelligent mower continues to adjust from the second gear to the first gear, the position of the rotating plate 2232 remains unchanged under the action of the limiting piece 16. The rotating plate 2232 will slide upward relative to the first protective side wall 12, and the first protective side wall 12 continues to move downward until it switches to the first gear.

[0191] Since the height of the second protective cover 2 does not change when the intelligent mower switches gears. In an embodiment of the present application, the limiting piece 16 can be arranged on the second protective cover 2, or the limiting piece 16 is connected to the bottom of the device body.

[0192] As mentioned above, the first protective side wall 12 has two structures, one of which has a folded edge or protective plate on the first protective side wall 12, and the other of which has no folded edge or protective plate on the first protective side wall 12. In the technical solution of the present application, the rotating plate 2232 can be connected to both of the two first protective side walls 12. When the first protective side wall 12 has a folded edge or protective plate, the folded edge or protective plate and the rotating plate 2232 are located on the two sides of the first protective side wall 12, respectively. When the first protective side wall 12 has no folded edge or protective plate, the rotating plate 2232 can be arranged on the inner side of the first protective side wall 12 or on the outer side of the first protective side wall 12.

[0193] Referring to Figure 36 , Figure 38 and Figure 39 , the length of the rotating plate 2232 is Hr, the length of the rotating plate 2232 is greater than the diameter of the cutting cutter 33, the middle point of the rotating plate 2232 is located near the middle position dashed line S of the device body, and the rear end of the rotating plate 2232 is close to the traveling wheel of the intelligent mower.

[0194] Referring to Figure 36 and Figure 37 , in an embodiment provided by the present application, the second protective cover 2 is an integral structure with the shell of the intelligent mower, and the second protective cover 2 is arranged along the length direction of the device body, Figure 36 the arrow Y direction, the second protective cover 2 is located on the front side of the traveling wheel. The second protective cover 2 has second protective side walls 22 in three directions, and the second protective side walls 22 are arranged around the front side, the left side and the right side of the device, thereby providing effective protection for the intelligent mower. The protective side walls on different functional direction sides can be an integral structure or a segmented structure.

[0195] Further, in order to improve the intelligent level of the intelligent mower, the intelligent mower can detect the collision in time when the intelligent mower collides with an obstacle, and a collision sensing component can be arranged on the second protective side wall 22. For example, one collision sensing component is arranged on the second protective side wall 22 in each of the three directions of the second protective cover 2, and when one of the collision sensing components is triggered, the intelligent mower can detect the direction of the collision in time.

[0196] In addition, in another embodiment of the present application, the second protective side wall 22 can also be in a movable connection state with the second protective cover 2, and at least one collision sensing component is arranged on the device body on different direction sides. When the second protective side wall 22 is hit, the second protective side wall 22 can move (displacement within a small range of action) relative to the second protective cover 2, thereby triggering the collision sensing component arranged on the second protective side wall 22.

[0197] Referring to Figure 37In one embodiment, the second protective side wall 22 of the second protective cover 2 is segmented in three directions (e.g. the second protective side wall 22a, the second protective side wall 22b, the second protective side wall 22c), and when one of the second protective side walls 22 is impacted, it can move slightly relative to the second protective cover 2, thereby triggering the collision sensing component at the corresponding position.

[0198] For reference Figure 36 and Figure 39 In one embodiment, the cutting mechanism 3 includes a plurality of cutting discs 33, which are arranged at the bottom of the device body in a staggered manner along the length direction of the device body. Specifically, along the length direction of the device body, Figure 36 In the arrow Y direction, the distances from the rotation centers of different cutting discs 33 to the front part of the device body are different, and along the width direction of the device body, Figure 36 In the arrow X direction, the distances between the rotation centers of different cutting discs 33 are greater than the diameters of the cutting discs 33. As shown in Figure 36 The cutting mechanism includes two cutting discs 33, and the diameters of the two cutting discs 33 are the same. Along the length direction of the device body, the rotation center of one cutting disc 33 is close to the middle position of the device body, which can be considered as Figure 36 The rotation center of the other cutting disc 33 is below the middle position. At least one cutting disc 33 of the plurality of cutting discs 33 is close to a target side of the device body. For example, Figure 36 As shown in

[0199] In addition, the diameters of the plurality of cutting discs 33 on the cutting mechanism can also be different, for example, Figure 23 As shown.

[0200] Staggered arrangement of the plurality of cutting discs 33 can also reduce the number of target sides. As shown in Figure 36 Because there is no obstruction of the traveling wheels at the middle position of the device body, the user's hand or foot is more likely to reach the bottom of the device from the middle position. Staggered arrangement of the plurality of cutting discs 33 can make one cutting disc 33 as far away from the middle position as possible, so that only one target side needs to be set, and the rotating plate 2232 is set at the target side, which can effectively provide the protection function.

[0201] Further, as shown in Figure 35The bottom of the corresponding target side of the first protective side wall 12 is provided with a protective structure 17 extending to the inside of the first protective cover 1 and lower than the cutting mechanism 3. The protective structure 17 can provide further protection. The protective structure 17 can be the folding edge 122 or the protective plate 123 mentioned in the above embodiments. In addition to the structure with the guide plate and the longitudinal part mentioned above, the protective plate 123 can also be a structure with a right-angled triangle or a right-angled trapezoid cross section.

[0202] When the protective structure 17 is a folding edge, the upward face of the protective structure 17 is a plane. When the protective structure 17 is a protective plate 123, referring to Figure 33 and Figure 35 the upward face of the protective structure 17 is an inclined plane, i.e., the cross section of the protective structure 17 is a right-angled triangle.

[0203] In order to meet the requirements of lightweight design, referring to Figure 36 in an embodiment provided in the present application, the protective structure 17 is provided with a hollow structure 18. The hollow structure 18 can effectively reduce the weight of the protective structure 17 while ensuring that the protective structure 17 has sufficient strength.

[0204] The actual protection effect of the rotating plate 2232 will be described in detail below. Referring to Figure 40 When the user's hand is inserted into the bottom of the intelligent mower, the user's fingers can be fully inserted into the gap between the bottom of the device body and the ground, and the user's wrist will be blocked by the second protective side wall 22. At this time, under the action of the fingers, the rotating plate 2232 is forced to rotate by a certain angle and can effectively block the user's fingers from deepening in the direction of the cutting mechanism 3, thereby effectively protecting the user's fingers. In addition, when the user's foot sole is inserted into the bottom of the intelligent mower, the same effect is achieved. The second protective side wall 22 can effectively block the user's foot sole from continuing to insert, and the rotating plate 2232 can effectively block the user's toes from approaching the cutting mechanism 3.

[0205] As mentioned above, the intelligent mower has multiple working gears. At different working gears, the height of the cutting mechanism 3 from the ground is different. When the working gear is switched, the height of the cutting mechanism 3 from the ground will also change. The intelligent mower will be described in detail below when the cutting mechanism 3 is at different height gears.

[0206] Referring to Figure 41 , Figure 41Fig. a, Fig. b, Fig. c in Fig. 1 respectively represent the state schematic diagram of the cutting mechanism 3 of the intelligent mower when the cutting mechanism is in 30th gear, 40th gear, 50th gear. When the cutting mechanism is in 30th, 40th and 50th gear, since the first protective side wall 12 is lower than the second protective side wall 22, when the fingers 100 extend into the lower part of the intelligent mower, the second protective side wall 22 can effectively block the wrist, and the first protective side wall 12 can effectively block the fingers from extending to the cutting mechanism 3.

[0207] Referring to Figure 42 , Figure 42 Fig. d, Fig. e in Fig. 1 respectively represent the state schematic diagram of the cutting mechanism 3 of the intelligent mower when the cutting mechanism is in 60th gear, 70th gear. When the cutting mechanism is in 60th and 70th gear, since the first protective side wall 12 is higher than the end of the upper rotating plate 2232 of the second protective side wall 22, when the fingers 100 extend into the lower part of the intelligent mower, the second protective side wall 22 can effectively block the wrist, and the upper rotating plate 2232 of the second protective side wall 22 can effectively block the fingers from extending to the cutting mechanism 3.

[0208] Referring to Figure 43 , Figure 43 Fig. f, Fig. g in Fig. 1 respectively represent the state schematic diagram of the cutting mechanism 3 of the intelligent mower when the cutting mechanism is in 80th gear, 90th gear. When the cutting mechanism is in 80th and 90th gear, since the first protective side wall 12 is significantly higher than the end of the upper rotating plate 2232 of the second protective side wall 22, when the fingers 100 extend into the lower part of the intelligent mower, the second protective side wall 22 can effectively block the wrist, and the upper rotating plate 2232 of the second protective side wall 22 can effectively block the fingers from extending to the cutting mechanism 3. In addition, although the fingers can be hooked up, the end of the fingers cannot touch the cutting mechanism because the cutting mechanism 3 extends high enough. Therefore, under the joint action of the first protective side wall, the second protective side wall and the rotating plate 2232, the protection effect of the intelligent mower can be effectively improved.

[0209] In order to facilitate understanding of the technical solutions of the present application, specific application scenarios are given below to describe the self-cleaning method of the cleaning equipment provided by the present application in detail.

[0210] Application scenario one:

[0211] The first protective cover and the second protective cover cover part of the cutting mechanism. The uncovered area of the cutting mechanism is located at the front side and the rear side of the lawn mower, and the cutting of the lawn can be completed when the lawn mower advances or retreats. The bottom of the corresponding equipment body left side or right side of the first protective side wall is provided with a folding edge extending inwardly of the first protective cover and lower than the cutting mechanism. In the horizontal direction, the end of the folding edge of the first protective cover has a gap with the blade tip of the cutting mechanism. When the lawn mower cuts the edge of the lawn, the grass at the edge can extend into the area where the cutting mechanism is located through the gap, so as to achieve cutting to the edge. When the lawn mower completes the cutting of a lawn area, the lawn mower needs to be carried to another area for continuous work. When the user carries, although the cutting mechanism on the lawn mower has stopped rotating, accidental touching of the sharp blade still has a certain risk. Therefore, in order to prevent the user from accidentally touching the blade when searching for a force point before carrying, the protective side wall of the second protective cover can effectively block the user's wrist and prevent it from further extending into the area where the cutting mechanism is located. In addition, in the case that the cutting mechanism is relatively low relative to the ground, the folding edge on the protective side wall of the first protective cover can further block the user's fingers from extending to the cutting mechanism. By setting the first protective cover and the second protective cover, multiple protection can be provided for the user to prevent accidental injury.

[0212] In summary, in the technical scheme of the embodiment of the present application, by setting the second protective cover outside the first protective cover, a multiple protective cover is set, and the thickness of the second protective side wall is greater than that of the first protective side wall, thereby effectively improving the protection effect of the protective cover assembly. In addition, in the horizontal direction, the end of the folding edge of the first protective cover has a gap with the blade tip of the cutting mechanism, and when cutting the edge of the lawn, the grass at the edge can extend into the area where the cutting mechanism is located through the gap, so as to achieve cutting to the edge. In addition, due to the effect of the gap, the objects cut by the cutting mechanism are also not easy to accumulate in the protective cover, and cause the problem of cutting the blade.

[0213] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A smart lawnmower, characterized in that, The device body has left and right sides along the width direction of the device body; The cutting mechanism is eccentrically arranged at the bottom of the device body and close to the target side of the device body, the target side being the left side or the right side, the cutting mechanism having a cutting area relative to the device body; The first protective cover has a first protective side wall extending downward, and the bottom of the first protective side wall corresponding to the target side is provided with a folding edge extending inward of the first protective cover and lower than the cutting mechanism; The second protective cover is arranged above the first protective cover, and the second protective cover has a second protective side wall extending downward corresponding to the target side of the device body; The gap between the end of the folding edge and the cutting area of the cutting mechanism in the horizontal direction is 0.1-5 mm; and / or The distance between the end of the folding edge and the cutting edge of the upper cutter of the cutting mechanism in the vertical direction is 4-10 mm; or 2. The intelligent lawnmower as claimed in claim 1, wherein, The distance between the cutting edge of the upper cutter of the cutting mechanism and the first protective side wall is 6-27 mm; and / or The length of the folding edge is 5.9-22 mm. The second protective side wall is located outside the first protective side wall and has a gap with the first protective side wall. The bottom of the second protective side wall has a slope, which is higher on the outside and lower on the inside.

3. The intelligent lawnmower as claimed in claim 1 or 2, wherein, The second protective side wall is a double-layer side wall; 4. The intelligent lawnmower as claimed in claim 3, wherein, The double-layer side wall includes an inner protective wall on the inside and an outer protective wall on the outside; 5. The intelligent lawnmower as claimed in claim 3, wherein, The bottom of the outer protective wall is higher than the bottom of the inner protective wall. The height difference between the outer protective wall and the inner protective wall is 10-20 mm, and / or The height difference between the inner protective wall and the first protective side wall is 5-25 mm; or 6. The intelligent lawnmower as claimed in claim 5, wherein, The gap between the inner protective wall and the first protective side wall is 5-10 mm, and / or The distance between the inner protective wall and the outer protective wall is 15-30 mm. The second protective cover is the base of the device body; The first protective cover and the cutting mechanism are arranged on the base, and the first protective cover and the cutting mechanism can move up and down relative to the base synchronously.

7. The intelligent lawnmower as claimed in claim 3, wherein, The device body has left and right sides along the width direction of the device body; The cutting mechanism is eccentrically arranged at the bottom of the device body and close to the target side of the device body, the target side being the left side or the right side; 8. A smart lawnmower, characterized in that, The first protective cover is arranged above the cutting mechanism and has a first protective side wall extending downward; the bottom of the first protective side wall is lower than the cutter on the cutting mechanism; The second protective cover is arranged above the first protective cover, and the second protective cover has a second protective side wall extending downward corresponding to the target side of the device body; The second protective cover extends the distance of the target side of the device body from the cutter in the horizontal direction. The second protective side wall is a double-layer side wall; The double-layer side wall includes an inner protective wall on the inside and an outer protective wall on the outside; The bottom of the outer protective wall is higher than the bottom of the inner protective wall.

9. The intelligent lawnmower as claimed in claim 8, characterized in that, The device body has left and right sides along the width direction of the device body; ​ ​ 10. A smart lawnmower, characterized in that, ​ The device body is provided with a walking wheel set, which comprises a front wheel set and a rear wheel set; A cutting mechanism is located between the front wheel set and the rear wheel set and is biased to the right side or the left side of the bottom of the device body; A second protective cover is located outside the cutting mechanism and has an inner protective wall and an outer protective wall, the ground clearance of the inner protective wall is lower than that of the outer protective wall, and there is a gap between the inner protective wall and the outer protective wall.

11. The intelligent lawnmower as claimed in claim 10, wherein, The intelligent mower further comprises: A first protective cover is located between the second protective cover and the cutting mechanism, the first protective cover and the cutting mechanism are arranged on the bottom of the device body, and the first protective cover and the cutting mechanism can move up and down relative to the device body synchronously.

12. The intelligent lawnmower as claimed in claim 10, wherein, The outer side of the second protective cover is flush with the outer side of the corresponding side of the device body and the outer side of the rear wheel set, and the diameter of the cutting mechanism is greater than half the width of the bottom of the device body.

13. The intelligent lawnmower as claimed in claim 10, wherein, The front wheel set has a front wheel rotation area relative to the device body, the cutting mechanism has a first cutting area relative to the device body, part of the first cutting area is located outside the rear wheel set and the front wheel rotation area, and the outer side of the second protective cover exceeds the outer side of the rear wheel set.

14. A smart lawnmower, characterized in that, Comprise: A device body has a left side and a right side along the width direction of the device body; A cutting mechanism is eccentrically arranged on the bottom of the device body and close to the target side of the device body, and the target side is the left side or the right side; A first protective cover is arranged above the cutting mechanism, and the first protective cover has a first protective side wall extending downward; the bottom of the first protective side wall is lower than the cutter on the cutting mechanism; A second protective cover is arranged above the first protective cover, and the part of the second protective cover corresponding to the target side of the device body has a second protective side wall extending downward; The second protective side wall has a protection structure on the side facing the first protective side wall, the protection structure extends the distance of the target side of the device body from the cutter in the horizontal direction, the lower side of the protection structure can rotate towards the first protective side wall, and the bottom end of the protection structure is lower than the bottom end of the second protective side wall.

15. The intelligent lawnmower as claimed in claim 14, characterized in that, The protection structure comprises: A support is arranged on one side of the second protective side wall facing the first protective side wall along the horizontal direction, and the other end extends vertically to the bottom end of the second protective side wall; A rotating plate is rotatably arranged on the side of the other end of the support facing the second protective side wall, and the bottom end of the rotating plate is lower than the bottom end of the second protective side wall.

16. The intelligent lawnmower as claimed in claim 15, characterized in that, The first protective side wall has a protective plate on the side facing the cutting mechanism.

17. A smart lawnmower, characterized in that Comprise: A device body has a left side and a right side along the width direction of the device body; A cutting mechanism is arranged on the bottom of the device body and close to one target side of the device body, and the target side is the left side and / or the right side; A first protective cover is arranged above the cutting mechanism, and the first protective cover has a first protective side wall extending downward; the bottom of the first protective side wall is lower than the cutter on the cutting mechanism; A second protective cover is arranged outside the first protective cover, and a part of the second protective cover corresponding to the target side of the device body has a second protective side wall extending downward; A rotating plate is rotatably connected to the first protective side wall and / or the second protective side wall corresponding to the target side; In the vertical direction, the rotating plate extends downward, and when the protective plate is subjected to an external force, the rotating plate rotates towards the direction close to the cutting mechanism.

18. The intelligent mower according to claim 17, characterized in that: The rotating plate is connected to the end of the first protective side wall or the wall surface outside the first protective side wall through a rotating shaft; or The rotating plate is connected to the end of the second protective side wall, the wall surface inside the second protective side wall, or the wall surface outside the second protective side wall through a rotating shaft; or The rotating plate is arranged between the first protective side wall and the second protective side wall through a rotating shaft; The rotating plate rotates around the rotating shaft to make the angle of the rotating plate relative to the first protective side wall or the second protective side wall in the range of [40 degrees to 70 degrees].

19. The intelligent lawnmower as claimed in claim 18, characterized in that, When the rotating plate is connected to the first protective side wall, the first protective side wall is provided with a sliding seat, and the rotating plate is slidably arranged in the sliding seat, and the rotating plate slides up and down relative to the first protective side wall in the vertical direction.

20. The intelligent lawnmower as claimed in claim 18, wherein, The intelligent mower further comprises a limiting piece arranged on the first protective cover or the device body; When the rotating plate moves downward relative to the device body to the limit position along with the first protective side wall, the limiting piece abuts against the rotating plate.

21. The intelligent lawnmower as claimed in any one of claims 17 to 20, wherein, The cutting mechanism comprises a plurality of cutting discs, and the plurality of cutting discs are arranged at the bottom of the device body in a staggered manner along the length direction of the device body; At least one cutting disc is close to a target side of the device body, and the bottom of the first protective side wall corresponding to the target side is provided with a protective structure extending inward of the first protective cover and lower than the cutting mechanism.

22. The intelligent lawnmower as claimed in claim 17, wherein, The second protective side wall is movably connected to the second protective cover, and the second protective side wall is arranged around the front side, the left side, and the right side of the device body; The device body is provided with a collision sensing assembly on different direction sides, and when the second protective side wall is subjected to a collision, the second protective side wall moves relative to the second protective cover to trigger the collision sensing assembly.

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