Intelligent mower

Abstract

The invention 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 with application number CN202311196717.3 and application number CN202311685903.3, the entire contents of which are incorporated into this application by reference. Technical Field

[0003] The present application relates to the field of electrical equipment, and in particular to an intelligent lawn mower. Background Art

[0004] With the continuous development of electromechanical technology, many tasks can be completed using electromechanical equipment. For example, lawn mowing can be done by using a movable lawn mower, which can not only efficiently mow a large area of ​​lawn, but also ensure that the mowed lawn is neat and uniform. The high-speed rotating cutting mechanism is dangerous. Usually, for the safety of users, a protective cover is provided on the rotating cutting mechanism of the lawn mower.

[0005] Reducing the distance between the side of the protective cover and the tip of the knife and reducing the distance between the protective cover and the ground can provide better protection performance, but there are problems such as weed entanglement and large operating resistance of the cutting mechanism. Summary of the invention

[0006] In view of the above problems, the present application is proposed to provide an intelligent lawn mower that solves the above problems or at least partially solves the above problems.

[0007] In one embodiment of the present application, a smart lawn mower is provided, comprising:

[0008] An equipment body, wherein along a width direction of the equipment body, the equipment body has a left side and a right side;

[0009] a cutting mechanism, eccentrically disposed at the bottom of the device body and close to a 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;

[0010] A first protective cover, comprising a first protective side wall extending downward, wherein a bottom of the first protective side wall corresponding to the target side is provided with a folded edge which is lower than the cutting mechanism and extends toward the inside of the first protective cover;

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

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

[0013] Optionally, the smart lawn mower also includes a second protective cover; the second protective cover is arranged above the first protective cover, and the 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 on the outside of 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 an inclination, 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 includes an inner protective wall located on the inner side and an outer protective wall located on the outer side; the bottom of the outer protective wall is higher than the bottom of the inner protective wall.

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

[0017] Optionally, the second protective cover is the base of the equipment 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 synchronously relative to the base.

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

[0019] Optionally, the second protective side wall is a double-layer side wall; the double-layer side wall includes an inner protective wall located on the inner side and an outer protective wall located 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, a smart lawn mower is also provided, including: an equipment body, a bottom of which is provided with a walking wheel group, the walking wheel group including a front wheel group and a rear wheel group; a cutting mechanism, located between the front wheel group and the rear wheel group, and biased to the right or left side of the bottom of the equipment body; a second protective cover, located on the outside of the cutting mechanism, and having an inner protective wall and an outer protective wall, the height of the inner protective wall from the ground is lower than the height of the outer protective wall from the ground, and there is a gap between the inner protective wall and the outer protective wall.

[0021] Optionally, the intelligent lawn mower further includes: a first protective cover, located between the second protective cover and the cutting mechanism, the first protective cover and the cutting mechanism are arranged at the bottom of the device body, and the first protective cover and the cutting mechanism can move up and down synchronously relative to the device body.

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

[0023] Optionally, the front wheel group has a front wheel rotation area relative to the equipment body, the cutting mechanism has a first cutting area relative to the equipment body, a portion of the first cutting area is located outside the rear wheel group and the front wheel rotation area, and the outer side of the second protective cover exceeds the outer side of the rear wheel group.

[0024] In another embodiment of the present application, another intelligent lawn mower is provided, including: an equipment body, the equipment body having a left side and a right side along the width direction of the equipment body; a cutting mechanism, eccentrically arranged at the bottom of the equipment body and close to the target side of the equipment body, the target side being the left side or the right side; a first protective cover, arranged above the cutting mechanism, the first protective cover having a first protective side wall extending downward; the bottom of the first protective side wall is lower than the tool on the cutting mechanism; a second protective cover, arranged above the first protective cover, the portion of the second protective cover corresponding to the target side of the equipment body having a second protective side wall extending downward; the second protective side wall has a protective structure on a side facing the first protective side wall, the protective structure extends the distance of the target side of the equipment body from the tool in the horizontal direction, the lower side of the protective structure can be rotated toward the first protective side wall, and the bottom end of the protective structure is lower than the bottom end of the second protective side wall.

[0025] Optionally, the protection structure includes: a bracket, one end of which is horizontally extended and arranged on a side of the second protection side wall facing the first protection side wall, and the other end of which is vertically extended to be flush with the bottom end of the second protection side wall;

[0026] The rotating plate can be rotatably arranged on the other end of the bracket facing the 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, a protective plate is provided on a side of the first protective side wall facing the cutting mechanism.

[0028] In another embodiment of the present application, another intelligent lawn mower is provided, including: an equipment body, the equipment body having a left side and a right side along the width direction of the equipment body; a cutting mechanism, arranged at the bottom of the equipment body and close to a target side of the equipment body, the target side being the left side and\or the right side; a first protective cover, arranged above the cutting mechanism, the first protective cover having a first protective side wall extending downward; the bottom of the first protective side wall is lower than the tool on the cutting mechanism; a second protective cover, arranged on the outer side of the first protective cover, the second protective cover having a second protective side wall extending downward at a portion corresponding to the target side of the equipment body; a rotating plate, 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 external force, the rotating plate rotates toward the direction close to 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 axis so that the angle at which the rotating plate is inclined 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, a sliding seat is provided on the first protective side wall, and the rotating plate is slidably disposed in the sliding seat, and the rotating plate slides up and down in a vertical direction relative to the first protective side wall.

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

[0033] Optionally, the cutting mechanism includes multiple cutting blades, which are staggered at the bottom of the equipment body along the length direction of the equipment body; at least one of the cutting blades is close to a target side of the equipment body, and the bottom of the first protective side wall corresponding to the target side is provided with a protective structure lower than the cutting mechanism and extending toward the inside of the first protective cover.

[0034] Optionally, the second protective side wall can be movably connected to the second protective cover, and the second protective side wall is arranged around the front, left and right sides of the equipment body; a collision sensing component is provided on the equipment body on different directions, 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 solution of the embodiment of the present application, a folded edge is provided at the position of the first protective side wall corresponding to the left or right side of the device body, which can provide a good protective effect on the left or right side of the device body, and can greatly reduce the harm of the smart lawn mower to people or animals. In addition, there is a gap between the end of the folded edge and the tip of the cutting mechanism in the horizontal direction, so that the cutting mechanism can effectively cut to the edge, and the cutting efficiency is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1 A top view of some components of an intelligent lawn mower provided in an embodiment of the present application;

[0038] Figure 2a A cross-sectional view of some components of an intelligent lawn mower provided in an embodiment of the present application;

[0039] Figure 2b A three-dimensional view of some components of an intelligent lawn mower provided in an embodiment of the present application;

[0040] Figure 3 A cross-sectional view of some components of another intelligent lawn mower provided in an embodiment of the present application;

[0041] Figure 4 A schematic diagram of a cutter and a first protective cover in a smart lawn mower provided in an embodiment of the present application in a second gear state;

[0042] Figure 5 A schematic diagram of a cutter and a first protective cover in the intelligent lawn mower provided in an embodiment of the present application in a third gear state;

[0043] Figure 6 A schematic diagram of a cutter and a first protective cover in a smart lawn mower provided in an embodiment of the present application in a fourth gear state;

[0044] Figures 7a to 7d Shows Figure 2a A diagram of the finger protection state corresponding to the second protective side wall of the structure shown;

[0045] Figures 8a to 8d Shows Figure 3 A diagram of the finger protection state corresponding to the second protective side wall of the structure shown;

[0046] Fig. 9 Shows Figure 2a A diagram showing the protection state of an adult foot corresponding to the second protective side wall of the structure shown;

[0047] Figures 10a to 10c Shows Figure 3 A diagram showing the protection state of an adult foot corresponding to the second protective side wall of the structure shown;

[0048] Fig.11a and 11b Shows Figure 2a A diagram showing the standing child's foot protection state corresponding to the second protective side wall of the structure shown;

[0049] Figures 12a to 12c Shows Figure 3 A diagram showing the standing child's foot protection state corresponding to the second protective side wall of the structure shown;

[0050] Fig.13 Shows Figure 2a A diagram of a kneeling child foot protection state corresponding to the second protective side wall of the structure shown;

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

[0052] Fig.15 A schematic diagram of the structure of an intelligent lawn mower provided by another embodiment of the present application is shown;

[0053] Fig.16 A structural schematic diagram of an intelligent lawn mower provided by another embodiment of the present application is shown;

[0054] Fig.17 A schematic diagram of the structure of an intelligent lawn mower with a cutting area located inside provided in an embodiment of the present application;

[0055] Fig.18 A partial cross-sectional view of the intelligent lawn mower provided in an embodiment of the present application;

[0056] Fig.19 A partial cross-sectional view of the simulated moving intelligent lawn mower provided in an embodiment of the present application;

[0057] Fig. 20 A partial cross-sectional view of a simulated hand reaching into the bottom of a device provided in an embodiment of the present application Figure 1 ;

[0058] Fig.21 A second partial cross-sectional view of a simulated hand extending into the bottom of a device body provided in an embodiment of the present application;

[0059] Fig. 22 A schematic diagram of the structure of the smart lawn mower with the cutting area located outside provided in the embodiment of the present application Figure 1 ;

[0060] Fig.23 A second structural diagram of the intelligent lawn mower with the cutting area located outside provided in an embodiment of the present application;

[0061] Fig.24 A partial cross-sectional view of the target side of the smart lawn mower provided by an embodiment of the present application;

[0062] Fig.25 A schematic diagram of a cutting mechanism provided in an embodiment of the present application in the 80th gear state;

[0063] Fig.26 A schematic diagram of a cutting mechanism provided in an embodiment of the present application in a 90th gear position;

[0064] Fig. 27 A schematic diagram of a cutting mechanism provided in an embodiment of the present application in a state of the 100th gear position;

[0065] Fig.28 A schematic diagram of a cutting mechanism provided in an embodiment of the present application in a 70th gear state;

[0066] Fig.29 A schematic diagram of a cutting mechanism provided in an embodiment of the present application in a 60th gear state;

[0067] Fig.30 A schematic diagram of a cutting mechanism provided in an embodiment of the present application in a 50th gear state;

[0068] Fig.31A schematic diagram of a cutting mechanism provided in an embodiment of the present application in a 40th gear state;

[0069] Fig.32 A cross-sectional view of an intelligent lawn mower provided in an embodiment of the present application;

[0070] Fig.33 A cross-sectional view of another intelligent lawn mower provided in an embodiment of the present application;

[0071] Fig.34 Schematic diagram of various situations of the setting position of the rotating plate provided in the embodiment of the present application;

[0072] Fig.35 A cross-sectional view of another intelligent lawn mower provided in an embodiment of the present application;

[0073] Fig.36 A bottom view of an intelligent lawn mower provided in an embodiment of the present application;

[0074] Fig.37 A three-dimensional diagram of a partial structure of an intelligent lawn mower provided in an embodiment of the present application;

[0075] Fig.38 A left view of an intelligent lawn mower provided in an embodiment of the present application;

[0076] Fig.39 A bottom view of a partial structure of another intelligent lawn mower provided in an embodiment of the present application;

[0077] Fig.40 A cross-sectional view of a simulated hand reaching into the bottom of an intelligent lawn mower provided in an embodiment of the present application;

[0078] Fig.41 A schematic diagram of simulating a hand reaching into the bottom of the smart lawn mower when the cutting mechanism provided in the embodiment of the present application is at the 30th, 40th, and 50th gear positions;

[0079] Fig.42 A schematic diagram of simulating a hand reaching into the bottom of the smart lawn mower when the cutting mechanism provided in the embodiment of the present application is at the 60th and 70th gear positions;

[0080] Fig.43 This is a schematic diagram of simulating a hand reaching into the bottom of the smart lawn mower when the cutting mechanism provided in an embodiment of the present application is at the 80th or 90th gear position. DETAILED DESCRIPTION

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

[0082] The embodiments described in this application are only a part of the embodiments of this application, not all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of this application. The "including" mentioned in the entire specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problems within a certain error range and basically achieve the technical effects. In addition, in the embodiments of this application, multiple refers to two or more. In the absence of mutual contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples. The descriptions of "first", "second", etc. in this article are used to distinguish different directions, structures, components, etc., and do not represent the order of precedence.

[0083] Figure 1 A top view of some components of an intelligent lawn mower provided in an embodiment of the present application, Figure 2a A cross-sectional view of some components of a smart lawn mower provided in an embodiment of the present application. Figure 2b A three-dimensional view of some components of a smart lawn mower provided in an embodiment of the present application. Figure 3 A cross-sectional view of some components of another intelligent lawn mower provided in an embodiment of the present application. Figures 1 to 3 In one embodiment of the present application, a smart lawn mower is provided. The smart lawn mower includes: a device body, a cutting mechanism 3 and a first protective cover 1. Figures 1 to 3 The specific structure of the device body is not shown, and the appearance structure of the device body is not specifically limited in this embodiment. Along 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 at Figure 1 In the Y direction of the middle arrow, on the right Figure 1 In the direction of the arrow X. Along the width direction of the device body, the device body has a left side and a right side, 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 the left and right sides of the device body are target sides. The cutting mechanism 3 has a cutting area relative to the device body. The cutting area can be considered as the area that can be cut by the tool on the cutting mechanism 3 when the cutting mechanism 3 rotates, and the edge of the cutting area is the tip circle formed when the tool rotates.

[0084] The cutting mechanism 3 faces the ground and has a certain distance from the ground. 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 (toward the ground). The first protective side wall 12 can provide effective protection on the target side, for example, preventing the user from extending his hands or feet to the area where the cutting mechanism 3 is located and contacting the cutting mechanism 3 in an accidental situation, and can also prevent the fingers of the user from contacting the cutting mechanism 3 when the user needs to carry the intelligent lawn mower. The first protective cover 1 is provided with a notch 6 at the front and rear sides of the corresponding device body, so that the cutting mechanism 3 is partially exposed from the first protective cover 1. When the device body moves in the forward direction, the cutting mechanism 3 exposed at the notch 6 on the front side can effectively cut the grass. When the device body moves in the backward direction, the cutting mechanism 3 exposed at the notch 6 on the rear side can effectively cut the grass.

[0085] like Figure 2a and 2b As shown, in order to improve the protective effect of the first protective side wall 12, the bottom of the first protective side wall 12 corresponding to the target side of the equipment body is provided with a folding edge 122 which is lower than the cutting mechanism 3 and extends to the inside of the first protective cover 1. 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 tip circle. This gap allows the cutting mechanism 3 to cut the edge when mowing 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 where the cutting mechanism 3 is located (the cutting area) through the gap, and the rotating cutting mechanism 3 can cut off the grass, so that the intelligent lawn mower can cut the edge when mowing the lawn. In addition, due to the existence of the gap, it is not easy for weeds to accumulate in the area where the cutting mechanism 3 is located, and the cut weeds can be discharged through the gap instead of accumulating on the inside of the first protective cover 1. In a specific embodiment, the cutting mechanism 3 is a rotatable blade disc, and a cutter protruding from the edge of the blade disc is provided on the blade disc. When the blade disc rotates, the cutting edge of the cutter will have a cutting force, thereby cutting the grass. The cutting area mentioned above can be the area covered by the entire blade disc and the cutter when rotating, or it can be the annular area formed when the cutter rotates. The tip circle formed when the cutter rotates can be considered as the outer ring edge of the cutting area.

[0086] Smart lawn mower Figure 2a , 2b and Figure 3In one embodiment provided in the present application, the first protective cover 1 includes a first upper protective wall 11, and a 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 allows the cut grass to be discharged from the bottom and the gaps 6 on both sides of the first protective cover 1. It is mentioned above that the first protective cover 1 is arranged above the cutting mechanism 3, which can be 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] Furthermore, the first protective side wall 12 can be straight or arc-shaped. For example, in an implementation provided in the present application, the first protective side wall 12 is arc-shaped and arranged on the outside of the arc-shaped section of the tip 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 tip circle. The plane where the tip circle is located can be considered as the above-mentioned cutting surface. The first protective side wall 12 extends in a direction close to the ground. The first protective side wall 12 can not only protect the user, but also protect the rotating cutting mechanism 3.

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

[0089] See also Figure 2a and 2b The first protective side wall 12 can effectively prevent the user from Figure 3 The folded edge 122 can effectively prevent the user from accidentally contacting the cutting mechanism 3 from the second direction (such as Figure 3 In a specific embodiment, the folded edge 122 is vertically connected to the bottom of the first protective side wall 12, and the cross section of the first protective side wall 12 is substantially L-shaped. In addition, the angle between the folded edge 122 and the first protective side wall 12 can also be an obtuse angle or an acute angle.

[0090] In a specific implementation, the length r of the folded edge 122 can be 5.9 to 22 mm. Figure 2a As shown, the dimension r from the end (ie, the inner edge) of the folded edge 122 to the outer sidewall of the first protective sidewall 12 may be 5.9-22 mm. For example, r may be 11 mm or 21 mm.

[0091] The folded edge 122 extends toward the direction close to the cutting mechanism 3, and the end of the folded edge 122 can be located outside the tip of the knife on the cutting mechanism 3. There is a gap between the end of the folded edge 122 and the tip of the knife, such as Figure 2aIn the example shown, the gap I can be 0.1 to 5 mm. Because of the existence of the gap, it can provide a safer protection demand while reducing the probability of weed accumulation. In addition, the grass at the edge of the lawn can also extend through the gap to the area where the cutting mechanism 3 is located, so that it can be effectively cut off by the cutting mechanism, realizing the function of cutting to the edge.

[0092] Furthermore, the folded edge 122 is located on the side of the cutting mechanism 3 facing the ground, and the edge of the folded edge 122 facing the ground can be considered as the outer edge, and the edge of the side opposite thereto is considered as the inner edge. Figure 3 In the vertical direction, there is a gap M between the inner edge of the folded edge 122 and the tool. In a specific embodiment, the distance M between the inner edge of the folded edge 122 and the tool can range from 4 to 10 mm. For example, the distance M can be 7 mm. Setting a gap between the inner edge of the folded edge 122 and the tool can not only effectively improve the chip removal capacity of the cutting mechanism 3, but also prevent the chips accumulated on the folded edge 122 from being cut twice, causing additional resistance.

[0093] In the horizontal direction, the distance J between the tip of the tool and the first protective side wall 12 is 6 to 27 mm. Figure 2a As shown. For example, the distance J can be 10 mm. 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 here that the cutting mechanism 3 of some intelligent lawn mowers can be raised and lowered. If the cutting mechanism of the intelligent lawn mower in this embodiment is a lifting cutting disc, the above distance H refers to the size when the cutting mechanism 3 is in the lowest position.

[0094] See also Figure 1 , the notch at the position on either side of the left or right side of the corresponding equipment body of the first protective cover 1 is projected on the plane where the cutting mechanism 3 is located, and has two notch endpoints. The notches on the left and right sides can be symmetrical relative to the reference axis. Among them, the reference axis passes through the center of the cutting mechanism and is parallel to the travel direction of the intelligent lawn mower. One implementation scheme is that there is no first protective side wall at the notch on the left and right sides of the first protective cover 1. The shape and size of the first upper protective wall 11 of the first protective cover 1 are comparable to those of 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 Figure 1In the example shown in , the cutting mechanism 3 includes a turntable 8 and a cutter 4. The size of the first upper protective wall 11 may be the same as the tip circle of the cutter 4, or the size of the first upper protective wall 11 may be the same as the size of the turntable 8. Another embodiment is that there is no first protective side wall or first upper protective wall at the notch on the left and right sides of the first protective cover 1, so that when looking down from the first protective cover 1, the portion of the cutting mechanism corresponding to the notch is exposed. For the latter embodiment, the upper side of the exposed portion of the cutting mechanism may be shielded by the shell of the equipment body, or by providing another protective cover above the first protective cover.

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

[0096] See also Figures 1 to 3 In another embodiment of the present application, an intelligent lawn mower is provided, comprising: an equipment body, a cutting mechanism 3, a first protective cover 1 and a second protective cover 2. Along the width direction of the equipment body, the equipment body has a left side and a right side. The cutting mechanism 3 is eccentrically arranged at the bottom of the equipment body and 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 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 tool on the cutting mechanism 3. The second protective cover 2 is arranged above the first protective cover 1, and the part of the second protective cover 2 corresponding to the target side of the equipment body has a second protective side wall 22 extending downward. The second protective cover 2 extends the distance between the target side of the equipment body and the tool in the horizontal direction. The second protective side wall 22 is located on the outside of the first protective side wall 12, and has a gap K with the first protective side wall 12. Among them, the gap K can be 5 to 20 mm, for example, K = 16 mm or K = 8 mm.

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

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

[0099] In a specific embodiment, the second protective sidewall 22 may include a multi-layer sidewall. Figure 2a , 2b and Figure 3 In the example shown, the second protective sidewall 22 includes two layers of sidewalls, which are referred to as double-layer sidewalls. The double-layer sidewall may include an inner protective wall 221 located at the inner layer and an outer protective wall 222 located at 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 inner protective wall 221 and the ground.

[0100] The height difference D4 between the outer protective wall 222 and the inner protective wall 221 may be 3 to 20 mm. Figure 3 In the example shown, D4 = 5 mm. Figure 4 In the example shown, D4 = 15 mm.

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

[0102] By the above Figure 2a , Figure 3 , Figure 4 , Figure 5 and Figure 6 It is known that in Figure 2a and Figure 3In the state shown and the state shown in the fourth, 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. For example, a person's feet, hands, etc. can easily reach from the bottom of the second protective cover to the first protective side wall 12. Due to the effect of the folded edge 122 at the bottom of the first protective side wall 12, the depth of the bottom of the equipment body is lengthened. Even if a person's fingers are inserted under the folded edge, it is very difficult to touch the tool above due to the stop of the folded 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 knife and the first protective cover 1 are at the top, which is safe enough, for example, it is extremely difficult for people's hands and feet to touch the knife.

[0103] The thickness of the inner protective wall 221 and the outer protective wall 222 may be equal or different. Figure 2a and Figure 3 The case where the inner protective wall 221 and the outer protective wall 222 have the same wall thickness is shown. Figure 2a The second protective cover is shown to include an integrally structured second upper protective wall 21 and a second protective side wall 22. The second protective side wall 22 can be formed into an inner protective wall 221 and an outer protective wall 222 by an integral molding process or a subtractive molding process. Figure 3 In the example shown, the second upper protective wall 21 and the inner protective wall 221 may be an integral structure, and the outer protective wall 222 may be connected to the inner protective wall via an intermediate piece. Figure 3 As shown, the middle piece may be a component similar to an "n" shape.

[0104] The thickness of the inner protective wall 221 and the outer protective wall 222 should not be too thin, as it is easy to deform and reduce safety, nor too thick, as it is too heavy. Figure 3 As shown, for example, the wall thickness M of the inner protective wall can be 2 to 8 mm. The wall thickness N of the outer protective wall can be 2 to 8 mm. Figure 2a In the example shown, the wall thickness of the inner protective wall 221 and the outer protective wall 222 are both 6.5 mm. Figure 3 In the example shown, the wall thickness of the protective wall 221 and the outer protective wall 222 are both 3 mm.

[0105] The gap V between the inner protective wall 221 and the outer protective wall 222 may be 15 to 30 mm. 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, thereby making the protective effect of the second protective cover 2 better.

[0106] Further, such as Figure 2aAs shown, the inner protective wall 221 may be a structure that is thick at the top and thin at the bottom. Figure 2a A first inclined surface is provided near the bottom of the outer protective wall 222 and on the inner side wall facing the inner protective wall 221, so that the thickness of the outer protective wall 222 becomes narrower from top to bottom. A second inclined surface is provided on the outer side wall of the inner protective wall 221 at a height corresponding to the first inclined surface and facing the outer protective wall 222, so that the thickness of the inner protective wall 221 becomes narrower 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 the 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 move up and down relative to the base synchronously. Specifically, the first protective cover 1 and the cutting mechanism 3 can move 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 smart lawn mower and the ground according to the required mowing height.

[0108] The following will describe the protection method provided by the solution provided in this embodiment in combination with specific scenarios. Figures 7a to 7d In the example shown in the figure, a mechanical handling finger is used to simulate a human finger. Figure 7a , the wrist of the carrying finger 100 is blocked 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 can no longer bend the finger upward, so it will not touch the tool. Figure 7b , similar to the first gear state, the first finger joint extends into the bottom of the folded edge 122, and because the finger cannot bend upwards due to the stop effect of the folded edge, it will not touch the tool. Figure 7c and 7d The wrist of the carrying finger 100 is stopped on the outside by the outer protective wall 222 and the inner protective wall 221, and the finger can be inserted into the inside of the second protective cover, but the tool and the first protective cover 1 are both located above. Even if the finger is bent upward, the finger cannot touch the tool due to the existence of the folded edge 122.

[0109] Figures 7a to 7d Shows Figure 2a FIG. 2 is a diagram showing a finger protection state corresponding to the second protective side wall 22 of the structure shown. 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 is greater than Figure 3 The height difference between the inner protective wall 221 and the outer protective wall 222 of the structure shown. Figures 8a to 8d Shows Figure 3 The second protective side wall 22 of the structure shown in the figure corresponds to the finger protection state. Figures 8a to 8d It can be seen that the inner protective wall 221 increases the thickness of the second protective side wall to extend the depth of the hand. Figures 7a to 7d The description is similar and will not be repeated here.

[0110] It should be added here that the cutting mechanism 3 of some intelligent lawn mowers is tilted. 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 lawn mower, and the rear side of the cutting mechanism corresponds to the rear side of the device body of the intelligent lawn mower. Figure 8d It shows that when the cutting mechanism is tilted and the tool is inclined, the carrying finger simulating a human finger is not likely to touch the tool due to the folded edge. It can be seen that the solution provided in the embodiment of the present application has a better protective effect.

[0111] Fig. 9 Shows Figure 2a The second protective side wall 22 of the structure shown corresponds to the adult foot protection state diagram. Fig. 9 The size of an adult foot is a statistical value, such as the average value of 85% of adult feet, etc., and this embodiment does not make any specific limitation on this. Fig. 9 As shown, the adult's foot is directly stopped by the inner protective wall 221 and cannot extend further inward, so no matter which gear state the cutter on the cutting mechanism and the first protective cover are in, the adult's foot will be stopped by the inner protective wall 221.

[0112] Figures 10a to 10c Shows 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 in the figure corresponds to the adult foot protection state. Fig.10a , the adult's foot is stopped by the first protective side wall 12. In the second gear state, not shown in the figure, it is similar to the first gear state, because the first protective cover and the tool are not raised high, the adult's foot will still be stopped by the first protective side wall 12. In the third gear state, Fig.10b Due to the height of the knife and the first protective cover, an adult's foot can reach in, but due to the blocking of the inner protective wall 221 and the outer protective wall 222 and the folding effect of the first protective side wall 12, the adult's foot cannot touch the knife. Fig.10c As shown, the inner protective wall 221 and the outer protective wall 222 limit the depth of an adult's foot, while the knife is located at a higher position and an adult's foot cannot touch the knife.

[0113] Fig.11a and 11b Shows Figure 2aThe second protective side wall 22 of the structure shown in the figure corresponds to the standing child foot protection state diagram. The child's foot is smaller in height and length than the adult's foot. In the first gear state, Fig.11a , the inner protective wall 221 and the outer protective wall 222 cannot play a blocking role, but the first protective side wall 12 can stop the child's feet from continuing to extend inward. Fig.11b The knife and the first protective cover are raised, and the child's foot can continue to extend into the knife without being stopped by the first protective side wall 12, but the longer inner protective wall 221 limits the depth of the extension, and the child's foot does not extend deep enough and the knife is raised, so the child's foot cannot touch the knife. The same is true in the third and fourth gear states.

[0114] Figures 12a to 12c Shows Figure 3 The second protective side wall 22 of the structure shown in the figure corresponds to the standing child foot protection state. In the first gear state, such as Fig.12a As shown, since the inner protective wall 221 and the outer protective wall 222 have a large gap from the ground and cannot play a stopping role, the first protective side wall 12 stops the child's feet. Figure 12b As shown in the figure, the knife and the first protective cover are raised, and the child's foot can be inserted further, and the front end of the child's foot is located at the lower side of the folded edge of the first protective side wall 12. Even if the inner and outer protective walls are far from the ground and the child's foot can be tilted upward, the folded edge will stop the child's foot from touching the knife. Fig.12c As shown, the knife and the first protective cover are raised, the bottom space is more, and the child's feet can be inserted more, but the knife is high, and the child's feet will not touch the knife. The same is true in the fourth gear state.

[0115] Fig.13 Shows Figure 2a The second protective side wall 22 of the structure shown corresponds to the kneeling child foot protection state diagram. Fig.14 Shows Figure 3 The second protective side wall 22 of the structure shown in the figure corresponds to the kneeling child foot protection state. In the first gear state, due to the stop of the inner protective wall 221 and the outer protective wall 222, the child's feet will not touch the knife. The same is true in the second, third and fourth gear states.

[0116] If the structure and size of the second protective cover are well designed, the safety protection requirements can be met without setting a folded edge on the first protective side wall of the first protective cover. That is, the present application also provides an intelligent lawn mower. Fig.15As shown, the intelligent lawn mower includes: an equipment body, a cutting mechanism 3, a first protective cover 1 and a second protective cover 2. Along the moving direction of the equipment body, the equipment body has a front side and a rear side. The cutting mechanism 3 is arranged at the bottom of the equipment body and close to the target side of the equipment 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 tool 4 on the cutting mechanism 3. The second protective cover 2 is arranged above the first protective cover 1, and the portion of the second protective cover 2 corresponding to the target side of the equipment body has a second protective side wall 22 extending downward. Among them, the second protective cover 2 extends the distance of the target side of the equipment body from the tool 4 in the horizontal direction.

[0117] The second protective side wall may be a side wall with a certain thickness, or may include multiple layers of side walls. Fig.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 located on the inner side 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. Referring to the above description, the smart lawn mower has multiple gear states, such as: first, second, third, fourth gear states, etc. Among them, in the first gear state, the height of the tool 4 and the first protective cover 1 from the ground is the lowest, and the second, third, and fourth gears are higher in sequence. 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, such as Fig.15 Status shown.

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

[0119] Furthermore, a 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 feasible technical solution, similar to the above Figure 3In the structure of the second protective side wall shown, the height difference between the inner and outer protective side walls is not large. Since there is no folding edge on the first protective cover, the thickness of the second protective side wall can be increased, and / or the distance between the second protective side wall and the tool 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. Therefore, in this embodiment, Fig.16 As shown, the bottom (i.e., the lowest position) of the second protective side wall is 43-46 mm from the ground, for example, d=45 mm. Correspondingly, in the horizontal direction, the distance F between the outer side wall of the outer protective wall and the tip of the tool is 88-92 mm, for example, F=90 mm.

[0121] Furthermore, in each of the above embodiments, the cutter 4 may extend outward in a horizontal direction or in an inclined direction. Figure 8d When the tool 4 extends outwardly at an angle, the angle between the direction in which the tool 4 is inclined and the horizontal direction is s, and the value range of the angle s is 5 degrees to 15 degrees. The tool 4 is arranged in an inclined manner, which can effectively improve the chip removal function of the cutting mechanism 3.

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

[0123] Fig.17 A schematic diagram of the structure of the intelligent lawn mower with the cutting area located inside provided in the embodiment of the present application, as shown in FIG. Fig.17 shown.

[0124] In another embodiment of the present application, a smart lawn mower is 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 a walking wheel assembly 40 is also arranged at the bottom of the device body to drive the device body to move, and the walking wheel assembly 40 includes a front wheel assembly 41 and a rear wheel assembly 42, wherein the front wheel assembly 41 is a steering wheel that can rotate 360 ​​degrees, and the rear wheel assembly 42 is a driving wheel assembly that can provide forward power. In the process of driving the device body to move, the cutting structure of the walking wheel assembly 40 can cut and trim the grass in the target area passed by.

[0125] In order to prevent the cutting mechanism 3 of the smart lawn mower from injuring people when it is in operation, the cutting mechanism 3 is often set in the center of the bottom of the device body, and the end of the cutting mechanism 3 is at a certain distance from the edge of the device body. This distance is the safety distance. When a person's limbs accidentally extend into the bottom of the smart lawn mower, no harm will be caused to the person within the safety distance. Therefore, if the smart lawn mower is to be safer, the greater the safety distance, the better. However, when the smart lawn mower travels to the edge of the target area to be cut, if there happens to be an obstacle at the edge of the target area to be cut, such as a fence, a wall, etc., for the safety of the smart lawn mower, the smart lawn mower will have a certain walking gap with the obstacle during the movement. Then the grass in the safety distance and walking gap area cannot be cut by the smart lawn mower, resulting in the problem of leaving a lot of grass at the border of the cutting area.

[0126] In order to solve the above problem, in an achievable embodiment of the present application, along the direction of movement of the device body, the device body has a front side, a rear side, and left and right sides. Fig.17 In the Y direction of the middle arrow, on the right Fig.17 Direction of the middle arrow X. Along the width direction of the device body, the device body has a left side and a right side, and the cutting mechanism 3 is located between the front wheel group 41 and the rear wheel group 42, and is biased to the right or left side of the bottom of the device body. Among them, the target side can be the left side or the right side. Or, both the left and right sides of the device body are the target side. 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 can be cut when the tool on the cutting mechanism 3 rotates when the cutting mechanism 3 rotates, and the edge of the first cutting area is the tip circle formed when the tool rotates. Since the cutting mechanism 3 is eccentrically arranged on the target side of the device body, when the intelligent lawn mower walks on the edge of the area to be cut, the cutting mechanism 3 can be 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, thereby ensuring that less grass is left at the boundary of the area to be cut, and the grass in the area to be cut is cut more cleanly.

[0127] Fig.18 This is a partial cross-sectional view of the smart lawn mower provided in the embodiment of the present application. Fig.17 refer to Fig.18 .

[0128] At the same time, in order to ensure the safety protection of the smart lawn mower for people, the smart lawn mower also includes a second protective cover 2, which is located on the outside of the cutting mechanism 3 and has 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 there is a gap between the inner protective wall 221 and the outer protective wall 222, which can be a conveying groove 224. The conveying groove 224 can accommodate human fingers, which limits the width of the second protective cover 2, that is, the second protective cover 2 extends the distance from the target side of the equipment body to the cutting mechanism 3 in the horizontal direction.

[0129] Moreover, the height of the inner protective wall 221 is lower than that of the outer protective wall 222, that is, the bottom of the second protective cover 2 is a slope. Therefore, when a person's foot extends from the target side to the bottom of the device body, although the position of the toes can extend to the inner side of the outer protective wall 222, the inner protective wall 221 can prevent the foot from continuing to extend, thus ensuring that the person's foot will not be hurt. Alternatively, when a person's hand extends from the target side to the bottom of the device body, if the wrist is blocked by the outer protective wall 222, the wrist will bend downward, and the palm will extend downward or diagonally downward. Since the second protective cover 2 has a certain width, the fingertips will abut against the bottom of the inner protective wall 221 at this time and will not touch the cutting area; if the wrist is not blocked by the outer protective wall 222, since the bottom of the second protective cover 2 is an inclined surface, the person's hand will extend diagonally downward along the direction of the bottom of the second protective cover 2 to the bottom of the device body. During the extension process, the hand will not directly touch the cutting area, but will be blocked by the inner protective wall 221. Generally, after sensing the obstruction of the inner protective wall 221, the person will immediately retract the hand to avoid touching the cutting area.

[0130] It should be noted that it is common knowledge that the cutting mechanism 3 is provided at the bottom of the smart lawn mower. Generally, people will not intentionally extend their limbs into the bottom of the smart lawn mower during operation. Extending limbs into the bottom of the smart lawn mower is usually an unconscious behavior. Therefore, when the user's limbs are extended into the bottom of the smart lawn mower, the inclined bottom of the second protective cover 2 can prompt the user through touch perception that the limbs or other body parts have entered the bottom of the smart lawn mower. Usually, after sensing the prompt, the user will pull the limbs that have entered the bottom of the smart lawn mower out from the bottom of the device body to ensure safety.

[0131] In this embodiment, the width of the second protective cover 2 is B, B>20 mm, and the length of an adult's hand is about 20 mm. The setting of B>20 mm can effectively interfere with the insertion of the hand when the hand is inserted from the bottom of the smart lawn mower, giving the person a prompt.

[0132] In this embodiment, the distance between the outer protective wall 222 and the cutting area is F, 30mm≤F≤55mm, F>B, so that there is a certain distance between the cutting mechanism 3 and the second protective cover 2 to prevent the second protective cover 2 from interfering with the rotation of the cutting mechanism 3, and also to prevent people's arms from entering from the bottom of the equipment body and touching the cutting mechanism 3.

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

[0134] It is understandable that if the height of the bottom of the inner protective wall 221 is less than the thickness of a finger, the inner protective wall 221 can ensure that a human hand cannot reach the bottom of the device body, thereby ensuring that a human hand will not be injured. However, the height of the inner protective wall 221 cannot be too low. If the height of the inner protective wall 221 is too low, the smart lawn mower will collide with the grass in the area to be cut when the smart lawn mower is walking. The grass in the area to be cut will hinder the smart lawn mower from moving forward, thereby increasing the load of the walking wheel assembly 40 and causing power consumption. In addition, if the ground in the area to be cut is uneven, it will also affect the walking of the smart lawn mower. Therefore, in this embodiment, the height of the bottom of the inner protective wall 221 is D2, 30mm≤D2≤55mm, which will not only prevent the walking of the smart lawn mower from being affected by the uneven road surface or grass, but also fully cut the grass.

[0135] The smart lawn mower of this embodiment can ensure that less grass is left in the area to be cut by means of motor offset, 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 width of the second protective cover 2 can ensure the safety of users.

[0136] In the embodiments that can be implemented in this application, please combine Fig.17 refer to Fig.18 One possible structure of 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 conveying 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 possible structure of the second protective cover 2 is that the second protective side wall includes layer walls arranged at intervals, and the gap between the outermost outer protective wall 222 and the adjacent wall forms the conveying groove 224. In this embodiment, the second protective side wall is a two-layer wall arranged at intervals, which is referred to as a double-layer side wall. The double-layer side wall may include an inner protective wall 221 located at the inner layer and an outer protective wall 222 located at 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 protection of smart lawn mowers for people, please refer to Fig.18 In an achievable embodiment of the present application, the intelligent lawn mower 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 the cover is arranged above the cutting mechanism 3. 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. When a person's limbs extend into the bottom of the intelligent cutting device and touch the second protective cover 2 without retracting the limbs and continue to extend toward the bottom of the intelligent lawn mower, the first protective side wall can prevent the person's limbs from contacting the cutting mechanism 3 when extending toward the bottom of the intelligent lawn mower, thereby protecting the person's limbs from touching the cutting area. In addition, when there are branches and other debris in the area to be cut, when the debris passes over the second protective cover 2 and continues to extend into the bottom of the intelligent lawn mower during the movement of the intelligent lawn mower, the first protective side wall can prevent the debris from continuing to extend, thereby preventing the cutting mechanism 3 from being damaged by foreign objects.

[0138] Furthermore, the first protective side wall 12 can be straight or arc-shaped. For example, in an implementation provided in the present application, the first protective side wall 12 is arc-shaped and arranged on the outside of the arc-shaped section of the tip 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 tip circle. The plane where the tip circle is located can be considered as the above-mentioned cutting surface. The first protective side wall 12 extends in a direction close to the ground. The first protective side wall 12 can not only protect the user, but also protect the rotating cutting mechanism 3.

[0139] The first protective side wall 12 can adapt not only to the shape of the cutting mechanism 3, but also to the shape of the device body. For example, when the device body is square, the first protective side wall 12 can be straight, and the first protective side wall 12 is parallel to a certain cutting line of the cutting mechanism 3 (parallel to the length direction of the device body) and is arranged on one side of the cutting mechanism 3. When the device body is circular, the first protective side wall 12 can be arc-shaped.

[0140] In a feasible embodiment, a feasible structure of the first protective cover 1 is that the first protective cover 1 also includes a first upper protective wall 11, one end of the first upper protective wall 11 is connected to the bottom of the equipment body, and the other end located on the target side is connected to the upper end of the first protective side wall, that is, the first protective cover 1 is "L" shaped.

[0141] Fig.19 A partial cross-sectional view of the simulated moving intelligent lawn mower provided in an embodiment of the present application, Fig. 20 A partial cross-sectional view of a simulated hand reaching into the bottom of a device provided in an embodiment of the present application Figure 1 , Fig.21 The second partial cross-sectional view of the simulated hand reaching into the bottom of the device body provided in the embodiment of the present application is provided in FIG. Figure 19 to Figure 21.

[0142] On some intelligent cutting machines, the blade disc used for cutting can be raised and lowered. The liftable blade disc can cut the grass into the required length according to the user's needs, and when the intelligent cutting device is not working, the blade disc can be raised to the highest position, which not only ensures the safety of personnel but also ensures that the blade disc is not easily damaged by foreign objects. The cutting mechanism 3 of this 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 for 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 to the fixed sleeve at the top of the cutting mechanism 3, and the end on the target side is connected to the upper end of the first protective side wall 12. The bottom of the first protective side wall 12 is provided with a folding edge 122 that is lower than the cutting mechanism 3 and extends to the inside of the first protective cover 1. There is a gap between the end of the folding edge 122 and the cutting area of ​​the cutting mechanism 3 in the horizontal direction. This gap ensures that the first protective cover 1 will not interfere with the operation of the cutting mechanism 3.

[0143] When the smart lawn mower is in operation, please refer to Figure 21 to Figure 23 If the first protective cover 1 follows the cutting mechanism 3 and descends to a level below the inner protective wall 221 of the second protective cover 2, even if a person's limbs pass through the second protective cover 2, they can still be blocked by the first protective side wall. Even if they pass through the first protective side wall, the folded edge 122 extends the depth of the bottom of the device body. Even if a person's fingers extend under the folded edge 122, they are very unlikely to touch the upper cutter under the stop of the folded edge 122. If the first protective cover 1 follows the cutting mechanism 3 and descends to the level of the inner protective wall 221 of the second protective cover 2, the folded edge 122 can further protect the person's limbs. When the lawn mower is not in operation, the first protective cover 1 follows the cutting mechanism 3 and rises to the bottom where the first protective side wall is higher than the inner protective wall 221. At this time, even if a person's limbs pass through the second protective cover 2 and extend to the bottom of the device body, they will not touch the cutting area. If a person's limbs pass through the second protective cover 2 and bend upward, the fingertips will also be blocked by the folded edge 122. It should be noted that when the cutting mechanism 3 cannot be raised or lowered, the bottom of the first protective side wall may also be provided with a folded edge 122. Furthermore, if the cutting mechanism 3 is offset on both sides of the bottom of the device body, each offset cutting mechanism 3 is correspondingly provided with a first protective side wall.

[0144] For further information, please refer to Fig.18, the folded edge 122 is located on the side of the cutting mechanism 3 facing the ground. The edge of the folded edge 122 facing the ground can be considered as the outer edge, and the edge of the opposite side is the inner edge. In the vertical direction, the gap between the inner edge of the folded edge 122 and the tool is M. In a specific embodiment, the distance M between the inner edge of the folded edge 122 and the tool can range from 4 to 10 mm. For example, the distance M can be 7 mm. Setting a gap between the inner edge of the folded edge 122 and the tool can not only effectively improve the chip removal capacity of the cutting mechanism 3, but also prevent the debris accumulated on the folded edge 122 from being cut a second time, causing additional resistance.

[0145] Fig. 22 A schematic diagram of the structure of the smart lawn mower with the cutting area located outside provided in the embodiment of the present application Figure 1 , Fig.23 For the second structural diagram of the intelligent lawn mower with the cutting area located outside provided in the embodiment of the present application, please refer to Fig.18 , Fig. 22 and Fig.23 .

[0146] In an achievable embodiment of the present application, a possible position of the cutting mechanism 3 is that the front wheel group 41 and the rear wheel group 42 are connected end to end to form a closed shape, then 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 assembly 40. The cutting mechanism 3 is located on the inner side, and the diameter of the cutting mechanism 3 is greater than half of the width of the bottom of the device body. 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 grass in the cutting area be fully cut to ensure that less grass is left at the border, but also the overall appearance of the device body can be ensured.

[0147] Another possible position of the cutting mechanism 3 is that the front wheel assembly 41 has a front wheel rotation area relative to the equipment body, and the cutting mechanism 3 has a first cutting area relative to the equipment body, and part of the first cutting area is located outside the rear wheel assembly 42 and the front wheel rotation area. That is to say, part of the first cutting area is located on the inside, and part of it is located on the outside. In this way, the first cutting area of ​​the intelligent cutting device covers the grass outside the walking wheel assembly 40 during walking, further shortening the distance between the first cutting area and the boundary of the area to be mowed, thereby further reducing the amount of grass left on the boundary. In order to ensure safety, the outer side of the second protective cover 2 exceeds the outer side of the rear wheel assembly so that the first cutting area is covered within the second protective cover. At this time, the second protective cover 2 can be a side structure of the upper cover of the equipment body or a separate part installed on the side of the equipment body.

[0148] In order to increase the mowing efficiency and the mowing area, in an implementable embodiment of the present application, the intelligent mower further includes a second cutting mechanism. The second cutting mechanism has a second cutting area relative to the equipment 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 equipment 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 less grass left at the boundary of the area to be cut, but also improve the cutting efficiency of the intelligent cutter, shorten the working line, and save electric energy.

[0149] Another implementable structure of the cutting mechanism 3 is that a cutting mechanism is eccentrically arranged on both sides of the bottom of the equipment body, and the cutting areas of the two cutting mechanisms do not interfere with each other. When encountering a narrow strip-shaped area to be cut, the intelligent cutting mechanism 3 only needs to make one pass to complete the cutting of all the grass on both sides, thereby improving 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 Fig.23 , there is a distance L between the main cutting area and the side cutting area or between the two cutting areas, and L≥10mm. The 10mm spacing 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 the largest possible cutting range, but also ensures sufficient cutting and less grass left.

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

[0152] In another embodiment of the present application, an intelligent lawn mower is provided, comprising: an equipment 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 equipment body, and the cutting area can be considered as the area that can be cut by the tool on the cutting mechanism 3 when the cutting mechanism 3 rotates, and the edge of the cutting area is the tip circle formed when the tool rotates. Along the width direction of the equipment body, the equipment body has a left side and a right side. The cutting mechanism 3 is eccentrically arranged at the bottom of the equipment body and 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 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 tool on the cutting mechanism 3. The second protective cover 2 is arranged above the first protective cover 1, and the part of the second protective cover 2 corresponding to the target side of the equipment body has a second protective side wall 22 extending downward. The distance between the outer side of the second protective side wall 22 and the outermost tip of the cutting mechanism 3 is F, 45mm≤F≤55mm. In the embodiment, F=50mm. The larger F is, the more conducive it is to protecting the limbs extending into the bottom end of the target side of the device body. However, the larger F is, the higher the cutting rate will be. Therefore, under the premise of ensuring the safety of the limbs, the smaller F is, the better.

[0153] It is understandable that the smaller the distance G between the bottom end of the second protective side wall 22 and the ground, the better. However, 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 protect the extension of limbs, during the movement of the intelligent cutting device, the second protective side wall 22 will abut against the grass in the area to be cut, and will not only be blocked by the grass, but will also be blocked by the road when passing through an uneven road, thereby causing the problem of difficulty in the movement of the intelligent 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 this embodiment, G = 60mm. Generally, when the limb enters the bottom end of the target side of the device body, it occurs when the person is in a standing or squatting state. At this time, if the limb wants to extend into the bottom end of the device body, it will extend obliquely downward from the bottom end of the target side of the device body. G = 60mm can effectively prevent the wrist of the person from directly passing through the bottom end of the device body obliquely downward when the person is in a standing or squatting state, and this distance does not hinder the movement of the intelligent lawn mower.

[0154] In order to further ensure the safety of the limbs extending into the bottom end of the target side of the device body, in an achievable embodiment of the present application, the second protective side wall 22 has a protective structure 223 on one side facing the first protective side wall 12, the lower side of the protective structure 223 can rotate toward the first protective side wall 12, and the bottom end of the protective 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 device body, it will touch the protective structure 223. Usually, the limb is accidentally extended to the bottom end of the target side of the device body without being aware of it. Therefore, when the limb touches the protective structure 223 when extending to the bottom of the device body, the user will realize that the limb has entered the bottom end of the device body, and at this time, the user will retract the limb to avoid danger. In addition, the protective structure 223 can extend the distance between the target side of the device body 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 when extending toward the bottom end of the target side of the device body, thereby preventing the limb from easily contacting the cutter and being cut by the cutter.

[0155] Specifically, see Fig.24 As an achievable embodiment, the protective structure 223 includes a bracket 2231 and a rotating plate 2232, wherein one end of the bracket 2231 extends in the horizontal direction and is arranged 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 be flush with 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 tool of the cutting mechanism 3.

[0156] The rotating plate 2232 can be rotatably arranged on the end portion of the bracket 2231 extending in the vertical direction, and is facing one 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 axis of the rotating plate 2232 and the second protective side wall 22 is O, O≤3mm, so that the rotating plate 2232 can rotate around the rotating axis toward the second protective side wall 22 until it abuts against the second protective side wall. Therefore, when the limb enters the bottom end of the target side of the device body, the limb can touch the rotating plate 2232 to prompt the user that the limb has entered the bottom end of the device body. When the limb continues to extend toward the bottom end of the device body, the rotating plate 2232 will rotate with the limb until it abuts against the second protective side wall 22. At this time, the rotating plate 2232 can prevent 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 50 mm and 55 mm, and can be 52 mm or 53 mm. The bottom end of the rotating plate 2232 guides the limb to continue to extend obliquely downward 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 function of guiding the movement of the limbs, there is still a risk of the limbs touching the cutting area if the limbs bend upwards and pass over the bottom end of the first protective side wall 12 after reaching the bottom end of the rotating plate 2232. In order to prevent the above dangers from occurring, in some achievable embodiments of the present application, the first protective side wall 12 has a protective plate 123 on the side facing the cutting mechanism 3, and when the limbs pass over the bottom end of the first protective side wall 12 and bend upwards, the limbs can be blocked by the protective plate 123, thereby avoiding being cut.

[0158] For more details, please refer to Fig.24 In some embodiments of the present application, the protective plate 123 has a structure in which the protective plate 123 includes a guide portion and a longitudinal portion, wherein one end of the guide portion is connected to the first protective side wall 12, and an acute angle is formed between the guide portion and the first protective side wall 12, and 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 toward the ground to be flush with the bottom end of the first protective side wall. The inclined guide portion can not only avoid the cutting area, but also serve as a guide structure for the grass to be cut, so that the grass to be cut can extend along the protective plate 123 after entering the gap between the protective plate 123 and the cutting mechanism 3, thereby preventing the protective plate 123 from blocking the grass to be cut from entering the cutting area. In addition, the inclined structure provides a receiving cavity with an inclined top end between the protective plate 123 and the first protective side wall 12. When the limb passes over the second protective side wall 22, the end of the limb will be blocked by the protective plate 123 and enter the receiving cavity. At this time, the limb will be blocked by the inclined top end of the receiving cavity if it extends upward, and the limb will slide down to the bottom of the protective plate 123 and be flush with the first protective side wall 12 while moving along the top end of the receiving cavity. At this time, the end of the limb becomes horizontally extended, and due to physiological characteristics, limbs such as hands or feet cannot be reversely extended, or because the protective plate 123 extends the distance between the protective side wall and the cutting area. Therefore, when the limb is extended horizontally, the bendable joints at the end of the limb are located within the protection range of the protective plate 123, so that the end of the limb cannot be bent upward, thereby ensuring that the limb will not contact the cutting area.

[0159] Furthermore, in order to fully cut the grass in the area to be cut, the grass in the area 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 part in the vertical direction is M, 12mm≤M≤15mm, and the distance between the cutting mechanism and the bottom end of the longitudinal part in the horizontal direction is P, mm0≤P≤3mm, so that there is a gap between the connection between the guide part and the longitudinal part and the cutting mechanism 3, and the grass to be cut can enter from the gap between the guide parts of the cutting mechanism 3 and tilt toward the guide part. As the grass near the cutting mechanism 3 is gradually cut, the grass near the guide part will gradually return to the right position and be cut by the cutting mechanism 3, thereby reducing the amount of grass left and making the cutting coverage wider.

[0160] In order to ensure that the parts on the intelligent lawn mower are fully utilized, the second protective cover 2 is the upper cover of the equipment body or the base of the equipment body. On some intelligent cutting machines, the blade disc on the cutting mechanism 3 can be raised and lowered. The liftable blade disc can cut the grass to the required length according to the user's needs, and when the intelligent cutting device is not working, the blade disc can be raised to the highest position, which not only ensures the safety of personnel but also ensures that the blade disc is not easily damaged by foreign objects. When the second protective cover 2 is the base of the equipment body, the cutting mechanism 3 of this embodiment can also be a liftable cutting mechanism 3, and the first protective cover 1 and the cutting mechanism 3 can move up and down synchronously relative to the base to ensure that the first protective cover 1 can protect the limbs extending into the bottom of the target side of the equipment body from injury when the cutting mechanism 3 is at any height.

[0161] Next, the intelligent lawn mower is described in detail when the cutting mechanism is located at different height positions.

[0162] Fig.25 This is a schematic diagram of the cutting mechanism in the 80th gear state provided in the embodiment of the present application, please refer to it Fig.25 . When the cutting mechanism 3 is in gear 80, the distance between the blade of the cutting mechanism 3 and the ground is 80 mm. If the height of the rotating plate 2232 from the ground is 50 mm, and the vertical distance between the blade and the rotating plate 2232 is 30 mm, when the limb is extended from the bottom end of the target side of the smart lawn mower, it will first touch the rotating plate 2232. As the limb continues to extend, the rotating plate 2232 follows the limb to rotate toward the first protective side wall 12 until it abuts against the second protective side wall 22. The limb passes over the bottom end of the rotating plate 2232 and bends upward. It can be understood that, due to the action of the second protective side wall 22 and the protective structure 223, the limb that passes over the bottom end of the rotating plate 2232 is the end of the limb that can be bent, that is, the fingertip. Under the action of the protective plate 123 and the vertical distance between the blade and the rotating plate 2232, the fingertip cannot contact the cutting area, thereby ensuring that the limb will not be injured.

[0163] Fig.26 This is a schematic diagram of the cutting mechanism provided in the embodiment of the present application in the 90th gear state. Fig. 27 This is a schematic diagram of the cutting mechanism in the 100th gear state provided in the embodiment of the present application, please refer to it Fig.26 and Fig. 27 .

[0164] It can be seen from the fact that when the cutting mechanism 3 is in the 80th gear, the limbs are extended to the bottom end of the target side of the smart lawn mower, and the fingertips cannot contact the cutting area. When the cutting mechanism 3 is in the 90th gear, the vertical distance between the blade disc and the rotating plate 2232 is 40mm. When the cutting mechanism 3 is in the 100th gear, the vertical distance between the blade disc and the rotating plate 2232 is 50mm, which is larger 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, it will not contact the cutting area.

[0165] Fig.28 This is a schematic diagram of the cutting mechanism in the 70th gear state provided in the embodiment of the present application, please refer to it Fig.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 at the 80th gear position, and will not be repeated again.

[0167] When the cutting mechanism 3 is in the 70th gear, the height of the cutting mechanism 3 from the ground is 70 mm, and the vertical distance between the blade disc and the rotating plate 2232 is 20 mm. After the end of the limb passes over the rotating plate 2232, it bends upward. At this time, the fingertips are also bent upward. Under the action of the protective plate 123 and the vertical distance between the blade disc and the rotating plate 2232, the fingertips cannot contact the cutting area, thereby ensuring that the limbs will not be injured.

[0168] Fig.29 This is a schematic diagram of the cutting mechanism in the 60th gear state provided in the embodiment of the present application, please refer to it Fig.29 .

[0169] When the cutting mechanism 3 is in the 60th gear, the height of the cutting mechanism 3 from the ground is 60 mm. At this time, the height of the bottom end of the first protective side wall 12 from the ground is less than the height of the lowest end of the flip plate 2232 from the ground. After the limb passes over the second protective side wall 22, it needs to pass over the first protective side wall 12 before it can bend upward. During the bending process, it will be abutted against the lowest end of the protective plate 123, so that the end of the limb can no longer continue to bend upward to avoid being cut.

[0170] Fig.30 This is a schematic diagram of the cutting mechanism in the 50th gear state provided in the embodiment of the present application, please refer to it Fig.30 .

[0171] When the cutting mechanism 3 is in the 50th gear, the height of the cutting mechanism 3 from the ground is 50 mm. At this time, the height of the bottom end of the first protective side wall 12 from the ground is approximately 13 mm less than the height of the lowest end of the flip plate 2232 from the ground. After the limb passes over the second protective side wall 22, the wrist needs to bend downward at a certain angle when passing over the first protective side wall 12. At this time, the bending angle of the limb end after passing over the first protective side wall 12 will become smaller. When the end of the limb bends upward to the maximum angle, it will abut against the protective plate 123, thereby protecting the limb from being affected by the cutting area.

[0172] Fig.31 This is a schematic diagram of the cutting mechanism in the 40th gear state provided in the embodiment of the present application, please refer to it Fig.31 .

[0173] When the cutting mechanism 3 is in the 40th gear, the height of the cutting mechanism 3 from the ground is 40 mm. At this time, the height of the bottom end of the first protective side wall 12 from the ground is approximately 23 mm less than the height of the lowest end of the flip plate 2232 from the ground. After the limb passes over the second protective side wall 22, the joint at the end of the limb cannot pass over the first protective side wall, so that the end of the limb can no longer continue to bend upward, thereby protecting the limb from the influence of the cutting area.

[0174] See also Figure 32 to Figure 35 In one embodiment of the present application, another rotating plate 2232 is also provided. In combination with the above embodiments, the intelligent lawn mower includes at least one rotating plate 2232, and the corresponding target side rotating plate 2232 can be 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 in a direction close to the cutting mechanism. The rotating plate 2232 can be arranged on the first protective side wall 12, or on the second protective side wall 22, or on both the first protective side wall 12 and the second protective side wall 22. Usually, the rotating plate 2232 is arranged at the end position on the first protective side wall 12, or the rotating plate 2232 is arranged at the end position on the second protective side wall 22. The rotating plate 2232 extends downward, which can be understood as the rotating plate 2232 extending in the direction close to the ground, so as to partially cover the gap between the cutting mechanism 3 and the ground. When the user's hands or feet extend from the target side to the bottom of the device body, the rotating plate 2232 can provide effective protection to prevent the user's hands or feet from contacting the cutting mechanism 3. In addition, since the rotating plate 2232 can rotate freely, when the smart lawn 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 smart lawn mower.

[0175] See also Figure 32 to Figure 36In one embodiment of the present application, an intelligent lawn mower is provided, which includes a device body, a cutting mechanism 3, a first protective cover 1, a second protective cover 2 and a rotating plate 2232. Along the width direction of the device body, as shown in FIG. Fig.32 In the direction of the middle 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, and the target side is the left side and / or 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; the bottom of the first protective side wall 12 is lower than the cutter on the cutting mechanism 3.

[0176] Further, the second protective cover 2 is arranged on the outside of the first protective cover 1, and the part of the second protective cover corresponding to the target side of the equipment body has a second protective side wall 22 extending downward. In the width direction of the intelligent mowing device, 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 acted upon by an external force, the rotating plate 2232 can rotate in a direction close to 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 fuselage, the bottom of the fuselage of the intelligent lawn mower is at a distance from the ground, which allows people's feet to be inserted under the fuselage and close to the blade as a cutting element. For safety reasons, the intelligent lawn mower sets the cutting mechanism 3 at a position far away from the boundary of the fuselage, so that even if the operator inserts his feet under the fuselage, he will not touch the cutting element. However, when the cutting mechanism 3 is far away from the boundary of the fuselage, it will cause the problem of not being able to cut the edge. For example, when the cutting mechanism 3 encounters obstacles such as corners, fences, and steps, a wider area that cannot be cut will be formed. These wider areas that cannot be cut by the intelligent lawn mower often need to be trimmed manually, which is time-consuming and laborious. In order to solve the corresponding cutting to the edge requirements without affecting the safety protection of the user, the conventional technology is to set a protective mechanism at the bottom of the cutting system. However, the corresponding protective mechanism has the phenomenon of pressing grass, entangled grass, and entangled mud, which affects the cutting effect of the machine and reduces the passability of the machine.

[0178] In order to solve the above technical problems, in the technical solution of the present application, a 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 while not affecting the cutting performance of the cutting mechanism and the passing performance of the smart lawn mower.

[0179] Further, see Figure 32 to Figure 37The rotating plate 2232 can be connected to the first protective side wall 12 and / or the second protective side wall 22 through the rotating shaft 19. When the first protective side wall 12 is provided with a rotating plate 2232, the rotating plate 2232 is connected to the end of the first protective side wall 12 through the rotating shaft 19 (such as Fig.34 As shown in FIG. a), or the rotating plate 2232 is connected to the wall surface outside the first protective side wall 12 through the rotating shaft 19 (as shown in FIG. Fig.34 Of course, the rotating plate 2232 can also be connected to the end of the protective structure 17 via the rotating shaft 19 (as shown in FIG. Fig.34 As shown in FIG. b in FIG. 1 , the rotating plate 2232 and the first protective side wall 12 form a structure similar to a hinge, and the rotating plate 2232 can rotate or swing a certain angle relative to the first protective side wall 12. When the rotating plate 2232 rotates, the distance between the end of the rotating plate 2232 and the ground will increase. The rotating plate 2232 rotates only under the action of an external force. When the external force is removed, the rotating plate 2232 will reset under the action of gravity, that is, reset to a vertical state.

[0180] Similarly, when the second protective side wall 22 is provided with a rotating plate 2232, the rotating plate 2232 is connected to the end of the second protective side wall 22 (such as Fig.34 e) or the inner wall of the second protective side wall 22 (as shown in FIG. Fig.34 d), of course, the rotating plate 2232 can also be arranged on the outer wall surface of the second protective side wall 22 (such as Fig.34 f). As mentioned above, the second protective side wall 22 is a double-layer side wall, and the double-layer side wall includes an inner protective wall 221 located on the inner side and an outer protective wall 222 located on the outer side, so the rotating plate 2232 can be arranged on the inner protective wall 221 or on the outer protective wall 222. Similarly, the rotating plate 2232 can be arranged on the inner wall surface or the outer wall surface of the inner protective wall 221 and the outer protective wall 222. Alternatively, the rotating plate 2232 is arranged between the first protective side wall and the second protective side wall through a rotating shaft. For example, at a position between the first protective side wall and the second protective side wall, which is not limited in this embodiment, the rotating plate is located at this position.

[0181] Of course, while the rotating plate 2232 provides a protective function, it is also necessary to avoid contact with the cutting mechanism due to excessive rotation angle. In one embodiment, the rotating plate 2232 rotates around the rotation axis so that the rotating plate can rotate relative to the first protective side wall 12 or the second protective side wall 22. The angle α ranges from [40 degrees to 70 degrees]. In a preferred embodiment, the rotation angle α is 50 degrees. Alternatively, the angle of inclination of the rotating plate relative to the first protective side wall or the second protective side wall can range from [40 degrees to 70 degrees].

[0182] Further, see Fig.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 5 mm to 15 mm. It can be understood that the distance M2 that the rotating plate 2232 extends downward from the bottom of the first protective side wall 12 is 5 mm to 15 mm. In this embodiment, the distance M2 is 10 mm. Fig.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 10 mm to 30 mm. In this embodiment, the distance M1 is 15 mm.

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

[0184] In order to prevent the rotating plate 2232 from seriously affecting the passability and obstacle-crossing performance of the intelligent lawn mower, in one embodiment provided in the present application, see Fig.37 and Fig.38 Along the length direction of the rotating plate 2232, a guiding slope 2233 is provided on the rotating plate 2232. The guiding slope 2233 may be 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. Usually, the length direction of the rotating plate 2232 is in the same direction as the length direction of the intelligent lawn mower. When encountering obstacles such as weeds and soil, the guiding slope 2233 on the rotating plate 2232 can drive the rotating plate 2232 to rotate automatically, thereby preventing the rotating plate 2232 from continuously colliding with obstacles and causing damage to the rotating plate 2232.

[0185] Specifically, in a specific implementation, see Fig.37 and Fig.38 The front end of the rotating plate 2232 is provided with a guide slope 2233, and the guide slope 2233 faces the ground. Fig.38As shown, the angle between the guide bevel 2233 and the vertical center line of the equipment body is β, and the value range of the angle β is 30 degrees to 70 degrees. In the present embodiment, the angle β is 60 degrees. If the intelligent lawn mower encounters obstacles such as weeds and soil while moving forward, these obstacles will exert a force on the guide bevel 2233. Under the action of this force, the rotating plate 2232 will rotate, thereby effectively avoiding direct contact with the obstacle to prevent the intelligent lawn mower from being stuck at the obstacle. Of course, the intelligent lawn mower may also move backwards. When moving backwards, the rear end of the rotating plate 2232 may contact the obstacle. Therefore, in order to prevent the intelligent lawn mower from getting stuck during the backward movement, the same guide bevel 2233 may also be provided at the rear end of the rotating plate 2232.

[0186] In the above embodiment, the first protective cover 1 and the cutting mechanism 3 can be synchronously moved up and down 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 lawn 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 lawn mower.

[0187] Therefore, when the first protective cover 1 and the cutting mechanism 3 move downward to a certain limit relative to the base, the rotating plate 2232 must be restricted from continuing to move downward with the first protective cover 1, so as to avoid the distance between the rotating plate 2232 and the ground being too small. Fig.35 In one embodiment provided in the present application, a sliding seat 23 is provided on the first protective side wall 12. When the rotating plate 2232 is connected to the first protective side wall 12, the rotating plate 2232 can be slidably disposed in the sliding seat 23, and the rotating plate 2232 can slide up and down in the vertical direction relative to the first protective side wall 12. 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] Normally, due to the effect of gravity, the rotating plate 2232 is located at the bottom of the sliding seat. When the first protective cover 1 drops too low, the rotating plate 2232 can slide upward relative to the first protective side wall 12, so that the distance between the ends of the rotating plate 2232 is kept within a safe range. For example, a driving device can be provided in the sliding seat 23, and the driving device 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 prevent the rotating plate 2232 from contacting the obstacle.

[0189] Further, see Fig.35 The intelligent lawn mower further includes a limiter 16. When the rotating plate 2232 moves downward to the limit position relative to the device body along with the first protective side wall 12, the limiter 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 the usage, and is not specifically limited thereto.

[0190] The working process of the limiting member 16 is described in detail below. As mentioned above, the intelligent lawn mower has multiple gears. In different gears, the distance between the first protective side wall 12 and the ground is different. Figures 7a to 7d , in the first gear, the distance between the first protective side wall 12 and the ground is the shortest, and in the fourth gear, the distance between the first protective side wall 12 and the ground is the farthest. In the fourth gear, the rotating plate 2232 can slide downward with the first protective side wall 12, and the limiter 16 is not connected to the rotating plate 2232 or does not act on the rotating plate 2232. As the gear of the intelligent lawn mower is adjusted, for example, in the second gear, the limiter 16 abuts against the rotating plate 2232. When the intelligent lawn mower continues to adjust from the second gear to the first gear, under the action of the limiter 16, the position of the rotating plate 2232 remains unchanged, and the rotating plate 2232 will slide upward relative to the first protective side wall 12, and the first protective side wall 12 will continue 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 lawn mower switches gears, in one embodiment of the present application, the limiting member 16 may be disposed on the second protective cover 2, or the limiting member 16 may be connected to the bottom of the device body.

[0192] As mentioned above, the first protective side wall 12 has two structures, one is that the first protective side wall 12 has a folded edge or a protective plate, and the other is that the first protective side wall 12 has no folded edge or a protective plate. In the technical solution of the present application, the rotating plate 2232 can be adapted to be connected to these two types of first protective side walls 12. When the first protective side wall 12 has a folded edge or a protective plate, the folded edge or the protective plate and the rotating plate 2232 are respectively located on both sides of the first protective side wall 12. When the first protective side wall 12 does not have a folded edge or a 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] See also Fig.36 , Fig.38 and Fig.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 disc 33, the middle point of the rotating plate 2232 is located near the dotted line S in the middle position of the equipment body, and the rear end of the rotating plate 2232 is close to the traveling wheel of the intelligent lawn mower.

[0194] See also Fig.36 and Fig.37 In one embodiment provided in the present application, the second protective cover 2 is an integrated structure with the housing of the intelligent lawn mower, along the length direction of the device body, Fig.36 In the direction of the middle arrow Y, the second protective cover 2 is located in front 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, left and right sides of the device, thereby providing effective protection for the intelligent lawn mower. The protective side walls located on the sides of different functional directions can be either an integrated structure or a segmented structure.

[0195] Furthermore, in order to improve the intelligence level of the smart lawn mower, when the smart lawn mower collides with an obstacle, the smart lawn mower can detect the collision in time, and a collision sensing component can be set on the second protective side wall 22. For example, a collision sensing component is set on the second protective side wall 22 in three directions of the second protective cover 2, and when one of the collision sensing components is triggered, the smart lawn 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 state of being movably connected to the second protective cover 2, and there is at least one collision sensing component on the device body on different sides. When the second protective side wall 22 is impacted, the second protective side wall 22 can move relative to the second protective cover 2 (displacement within a small movement range), thereby triggering the touch sensing component set on the second protective side wall 22.

[0197] See also Fig.37In a specific embodiment, the second protective side walls 22 in three directions of the second protective cover 2 are segmented (for example, the second protective side wall 22a, the second protective side wall 22b, and the second protective side wall 22c). When one of the protective side walls 22 is hit, it can be slightly displaced relative to the second protective cover 2, thereby triggering the collision sensing component at the corresponding position.

[0198] See also Fig.36 and Fig.39 In one embodiment provided in the present application, the cutting mechanism 3 includes a plurality of cutting blades 33, and along the length direction of the device body, the plurality of cutting blades 33 are staggeredly arranged at the bottom of the device body. Specifically, along the length direction of the device body, Fig.36 In the direction of the middle arrow Y, the rotation centers of different cutting blades 33 are at different distances from the front of the device body. Fig.36 In the direction of the middle arrow X, the distance between the rotation centers of different cutting discs 33 is greater than the diameter of the cutting disc 33. Fig.36 As shown in FIG. 1 , 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 of the cutting discs 33 is close to the middle position of the device body, and the middle position can be considered as Fig.36 At the position of the middle dashed line S, the rotation center of another cutting blade 33 is located below the middle position. At least one cutting blade 33 of the plurality of cutting blades 33 is close to a target side of the device body. Fig.36 In the figure, the left side of the device body is the target side, and the cutting disc 33 on the left side is close to the target side, thereby ensuring that the cutting disc 33 can effectively cut the edge.

[0199] In addition, the diameters of the multiple cutting discs 33 on the cutting mechanism may also be different, for example Fig.23 shown.

[0200] The staggered arrangement of the plurality of cutting blades 33 can also reduce the number of settings on the target side, see Fig.36 Since there is no traveling wheel blocking the middle of the device, it is easier for the user's hands or feet to reach the bottom of the device from the middle. By staggering the plurality of cutting discs 33, one cutting disc 33 can be as far away from the middle as possible. In this way, only one target side needs to be set, and a rotating plate 2232 is set on the target side to effectively provide a protective function.

[0201] Further, see Fig.35The bottom of the first protective side wall 12 corresponding to the target side is provided with a protective structure 17 which is lower than the cutting mechanism 3 and extends to the inside of the first protective cover 1. The protective structure 17 can provide further protection function, and the protective structure 17 can be the folding edge 122 or the protective plate 123 mentioned in the above embodiment. In addition to the structure having the guide plate and the longitudinal portion mentioned above, the protective plate 123 can also be a structure with a right triangle or a right trapezoidal cross section.

[0202] When the protective structure 17 is a folded edge, the upward side of the protective structure 17 is a flat surface; when the protective structure 17 is a protective plate 123, see Fig.33 and Fig.35 The upward side of the protective structure 17 is an inclined surface, that is, the cross section of the protective structure 17 is a right triangle.

[0203] To meet the requirements of lightweight design, see Fig.36 In one embodiment provided in the present application, a hollow structure 18 is provided on the protective structure 17. 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 protective effect of the rotating plate 2232 is described in detail below. Fig.40 When the user's hand reaches into the bottom of the smart lawn mower, the user's fingers can be fully extended into the gap between the bottom of the device 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 to a certain angle, and can effectively prevent the user's fingers from going deeper into the direction of the cutting mechanism 3, thereby effectively protecting the user's fingers. In addition, when the user's soles extend into the bottom of the smart lawn mower, the same effect is achieved. The second protective side wall 22 can effectively prevent the user's soles from continuing to extend, and the rotating plate 2232 can effectively prevent the user's toes from approaching the cutting mechanism 3.

[0205] As mentioned above, the smart lawn mower has multiple working gears. In 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 following is a detailed description of the smart lawn mower when the cutting mechanism 3 is at different height gears.

[0206] See also Fig.41 , Fig.41Figures a, b, and c in the figure respectively represent the state schematic diagrams of the cutting mechanism 3 of the intelligent lawn mower when it is at the 30th, 40th, and 50th gears. When the cutting mechanism is at the 30th, 40th, and 50th gears, since the first protective side wall 12 is lower than the second protective side wall 22, when the carrying finger 100 is extended under the intelligent lawn mower, the second protective side wall 22 can effectively block the wrist, and the first protective side wall 12 can effectively block the finger from extending to the cutting mechanism 3.

[0207] See also Fig.42 , Fig.42 Figures d and e in the figure respectively show the state schematic diagrams of the cutting mechanism 3 of the intelligent lawn mower at the 60th gear and the 70th gear. When the cutting mechanism is at the 60th and 70th gears, since the first protective side wall 12 is higher than the end of the rotating plate 2232 on the second protective side wall 22, when the carrying finger 100 extends under the intelligent lawn mower, the second protective side wall 22 can effectively block the wrist, and the rotating plate 2232 on the second protective side wall 22 can effectively block the finger from extending to the cutting mechanism 3.

[0208] See also Fig.43 , Fig.43 Figures f and g in the figure respectively represent schematic diagrams of the state when the cutting mechanism 3 of the intelligent lawn mower is at the 80th gear and the 90th gear. When the cutting mechanism is at the 80th and 90th gears, since the first protective side wall 12 is significantly higher than the end of the rotating plate 2232 on the second protective side wall 22, when the carrying finger 100 extends to the bottom of the intelligent lawn mower, the second protective side wall 22 can effectively block the wrist, and the rotating plate 2232 on the second protective side wall 22 can effectively block the finger from extending to the cutting mechanism 3. In addition, although the finger can be hooked upward, since the cutting mechanism 3 is extended high enough, the end of the finger still cannot touch the cutting mechanism. Therefore, under the joint action of the first protective side wall, the second protective side wall and the rotating plate 2232, the protective effect of the intelligent lawn mower can be effectively improved.

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

[0210] Application scenario 1:

[0211] A lawn mower robot, wherein a first protective cover and a second protective cover cover a part of the area of ​​a cutting mechanism. The area not covered by the cutting mechanism is located at the front side and the rear side of the lawn mower robot, and the lawn can be mowed when the lawn mower robot moves forward or backward. A folded edge is provided at the bottom of the left side or right side of the corresponding device body of the first protective side wall, which is lower than the cutting mechanism and extends to the inside of the first protective cover. In the horizontal direction, there is a gap between the end of the folded edge of the first protective cover and the tip of the cutting mechanism. When the lawn mower robot mows the edge of the lawn, the grass at the edge can extend into the area where the cutting mechanism is located through the gap, thereby achieving cutting to the edge. After the lawn mower robot completes mowing a lawn area, it is necessary to carry the lawn mower robot to another area to continue working. When the user carries the lawn mower robot, although the cutting mechanism on the lawn mower robot has stopped rotating, it is still dangerous to accidentally touch the sharp knife. Therefore, in order to prevent the user from accidentally touching the knife when looking for a point of force before carrying, the protective side wall of the second protective cover can effectively block the user's wrist to prevent it from further extending into the area where the cutting mechanism is located. In addition, when the cutting mechanism is relatively low to the ground, the folded edge on the protective side wall of the first protective cover can further prevent the user's fingers from reaching the cutting mechanism. By providing the first protective cover and the second protective cover, multiple protections can be provided for the user to prevent accidental injuries.

[0212] In summary, in the technical solution of the embodiment of the present application, by setting the second protective cover outside the first protective cover, it is equivalent to setting multiple protective covers, and the thickness of the second protective side wall is greater than the thickness of the first protective side wall, thereby effectively improving the protective effect of the protective cover assembly. In addition, in the horizontal direction, there is a gap between the folded end of the first protective cover and the tip of the cutting mechanism. When mowing the edge of the lawn, the grass at the edge can extend into the area where the cutting mechanism is located through the gap, thereby achieving cutting to the edge. In addition, due to the effect of the gap, objects cut by the cutting mechanism are not easy to accumulate in the protective cover and cause the problem of knife jamming.

[0213] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An intelligent lawn mower, characterized in that: include: An equipment body, wherein along a width direction of the equipment body, the equipment body has a left side and a right side; a cutting mechanism, eccentrically disposed at the bottom of the device body and close to a 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; A first protective cover, comprising a first protective side wall extending downward, wherein a bottom of the first protective side wall corresponding to the target side is provided with a folded edge which is lower than the cutting mechanism and extends toward the inside of the first protective cover; There is a gap between the end of the folded edge and the cutting area of ​​the cutting mechanism in the horizontal direction.

2. The intelligent lawn mower according to claim 1, characterized in that: In the horizontal direction, the gap between the end of the folded edge and the tip of the knife on the cutting mechanism is 0.1 to 5 mm; and / or In the vertical direction, the distance between the folded edge and the cutter on the cutting mechanism is 4 to 10 mm; or The distance between the tip of the knife on the cutting mechanism and the first protective side wall is 6 to 27 mm; and / or The folded edge length is 5.9 to 22 mm.

3. The intelligent lawn mower according to claim 1 or 2, characterized in that: The intelligent lawn mower further includes 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 sidewall is located at the outer side of the first protective sidewall and has a gap with the first protective sidewall.

4. The intelligent lawn mower according to claim 3, characterized in that: The bottom of the second protective side wall is inclined, being higher on the outside and lower on the inside.

5. The intelligent lawn mower according to claim 3, characterized in that: The second protective side wall is a double-layer side wall; The double-layer side wall comprises an inner protective wall located on the inner side and an outer protective wall located on the outer side; The bottom of the outer protective wall is higher than the bottom of the inner protective wall.

6. The intelligent lawn mower according to claim 5, characterized in that: The height difference between the outer protective wall and the inner protective wall is 10 to 20 mm, and / or The height difference between the inner protective wall and the first protective side wall is: 5 to 25 mm; or The gap between the inner protective wall and the first protective side wall is 5 to 10 mm, and / or The distance between the inner protective wall and the outer protective wall is 15 to 30 mm.

7. The intelligent lawn mower according to claim 3, characterized in that: 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 synchronously relative to the base.

8. An intelligent lawn mower, characterized in that: include: An equipment body, wherein along the width direction of the equipment body, the equipment body has a left side and a right side; A cutting mechanism, eccentrically disposed at the bottom of the device body and close to a target side of the device body, the target side being 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; Said 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 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 equipment body and the tool in the horizontal direction.

9. The intelligent lawn mower according to claim 8, characterized in that: The second protective side wall is a double-layer side wall; The double-layer side wall comprises an inner protective wall located on the inner side and an outer protective wall located on the outer side; The bottom of the outer protective wall is higher than the bottom of the inner protective wall.

10. An intelligent lawn mower, characterized in that: include: The equipment body has a running wheel set at the bottom, and the running wheel set includes a front wheel set and a rear wheel set; A cutting mechanism, located between the front wheel group and the rear wheel group, and biased toward the right side or the left side of the bottom of the device body; The second protective cover is located outside the cutting mechanism and has an inner protective wall and an outer protective wall. The height of the inner protective wall from the ground is lower than the height of the outer protective wall from the ground, and there is a gap between the inner protective wall and the outer protective wall.

11. The intelligent lawn mower according to claim 10, characterized in that: The intelligent lawn mower further comprises: The first protective cover is located between the second protective cover and the cutting mechanism. The first protective cover and the cutting mechanism are arranged at the bottom of the equipment body, and the first protective cover and the cutting mechanism can move up and down synchronously relative to the equipment body.

12. The intelligent lawn mower according to claim 10, characterized in that: The outer side of the second protective cover is flush with the outer side of the corresponding side of the equipment body and the outer side of the rear wheel set, and the diameter of the cutting mechanism is greater than half of the bottom width of the equipment body.

13. The intelligent lawn mower according to any one of claim 10, characterized in that: The front wheel group has a front wheel rotation area relative to the equipment body, the cutting mechanism has a first cutting area relative to the equipment body, part of the first cutting area is located outside the rear wheel group and the front wheel rotation area, and the outside of the second protective cover exceeds the outside of the rear wheel group.

14. An intelligent lawn mower, characterized in that: include: An equipment body, wherein along the width direction of the equipment body, the equipment body has a left side and a right side; A cutting mechanism, eccentrically disposed at the bottom of the device body and close to a target side of the device body, the target side being the left side or the right side; A first protective cover is 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 is arranged above the first protective cover, and a portion 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 protective structure on the side facing the first protective side wall, and the protective structure extends the distance between the target side of the equipment body and the tool in the horizontal direction. The lower side of the protective structure can be rotated toward the first protective side wall, and the bottom end of the protective structure is lower than the bottom end of the second protective side wall.

15. The intelligent lawn mower according to claim 14, characterized in that: The protection structure comprises: A bracket, one end of which is horizontally extended and arranged on a side of the second protective side wall facing the first protective side wall, and the other end of which is vertically extended to be flush with the bottom end of the second protective side wall; The rotating plate can be rotatably arranged on the other end of the bracket facing the 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.

16. The intelligent lawn mower according to claim 15, characterized in that: A protective plate is provided on the side of the first protective side wall facing the cutting mechanism.

17. An intelligent lawn mower, characterized in that: include: An equipment body, wherein along the width direction of the equipment body, the equipment body has a left side and a right side; A cutting mechanism, arranged at the bottom of the device body and close to a target side of the device body, the target side being the left side and / or the right side; A first protective cover is 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 is arranged on the outside of the first protective cover, and a portion 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, corresponding to the target side, rotatably connected to the first protective side wall and / or the second protective side wall; Wherein, in the vertical direction, the rotating plate extends downward, and when the protective plate is acted upon by an external force, the rotating plate rotates toward a direction approaching the cutting mechanism.

18. The intelligent lawn 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 inner wall surface of the second protective side wall, or the outer wall surface of 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 via a rotating shaft; Wherein, the rotating plate rotates around the rotating axis so that the angle at which the rotating plate is inclined relative to the first protective side wall or the second protective side wall is in the range of [40 degrees to 70 degrees].

19. The intelligent lawn mower according to claim 18, characterized in that: When the rotating plate is connected to the first protective side wall, a sliding seat is provided on the first protective side wall, and the rotating plate is slidably disposed in the sliding seat. The rotating plate slides up and down in a vertical direction relative to the first protective side wall.

20. The intelligent lawn mower according to claim 18, characterized in that: The intelligent lawn mower further includes a limiting member, which is arranged on the first protective cover or the device body; When the rotating plate moves downward to a limit position relative to the equipment body along with the first protective side wall, the limiting member abuts against the rotating plate.

21. The intelligent lawn mower according to any one of claims 17 to 20, characterized in that: The cutting mechanism comprises a plurality of cutting blades, and along the length direction of the device body, the plurality of cutting blades are staggeredly arranged at the bottom of the device body; At least one of the cutting blades is close to a target side of the equipment body, and a bottom of the first protective side wall corresponding to the target side is provided with a protective structure which is lower than the cutting mechanism and extends toward the inside of the first protective cover.

22. The intelligent lawn mower according to claim 17, characterized in that: 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 equipment body; Collision sensing components are provided on the equipment body at different direction sides. 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 components.

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