Cutting device and smart lawn mower

Abstract

The present invention discloses a cutting device and an intelligent lawn mower, the intelligent lawn mower comprising: a housing, a moving component for driving the intelligent lawn mower to move, a cutting motor for providing driving force for the cutting operation, and a cutting device for performing the cutting operation driven by the cutting motor; the cutting device comprising: a cutting piece, the cutting piece being able to move under the drive of the cutting motor; a protective structure comprising a bottom protection, the bottom protection being located below the cutting piece to establish a protective barrier below the cutting piece; the protective structure being stationary relative to the cutting piece in the height direction; at least when the cutting device is lower than the housing, the protective structure can drive the cutting device to move upward relative to the housing when subjected to an external force from bottom to top. The present application has strong safety and good passability, is particularly suitable for scenarios where it is necessary to ensure cutting to the edge, and can better meet the comprehensive needs of users.

Description

Technical Field

[0001] The present invention relates to the technical field of electric garden tools, and in particular to a cutting device and an intelligent lawn mower. Background Art

[0002] A smart lawn mower is an electric garden tool used for mowing lawns and vegetation. It features features such as automatic travel, collision avoidance, line-out prevention within a specified range, automatic return to recharge, safety checks, and battery level monitoring. Overall, a smart lawn mower can mow the lawn autonomously without direct human control or operation, while also offering low power consumption, low noise, and a compact and attractive appearance.

[0003] The smart lawn mower mainly includes: a control unit for controlling its automatic movement and cutting work; a housing, a mobile component for driving the smart lawn mower, and a cutting device for performing the cutting operation. The cutting device is generally located below the housing.

[0004] For safety reasons, some smart lawn mowers currently position their cutting mechanism farther from the perimeter of the machine. This prevents the operator from contacting the cutting element even if they extend their feet beneath the machine. However, this distance can lead to issues with the cutting mechanism not being able to cut into the edges. For example, if the cutting element encounters obstacles such as corners, fences, and steps, it can create wide areas that cannot be cut. These wide areas often require manual trimming, which is time-consuming and labor-intensive.

[0005] In order to solve the above problems, a more feasible way is to reduce the distance between the cutting device and the boundary, and at the same time install a protective mechanism on the casing, which can establish a protective barrier to prevent human tissue from extending under the fuselage and causing harm.

[0006] However, after installing the above-mentioned protective mechanism on the housing, the height of its bottom from the ground is a fixed value, which is likely to affect the passability of the smart lawn mower. For example, a smart lawn mower generally has multiple gears. In order to ensure that the smart lawn mower can provide safety protection in all gears, the bottom of the protective mechanism needs to isolate the cutter disc in the lowest gear. At this time, its height from the ground is necessarily lower. Assuming that in order to ensure the passability of the smart lawn mower, when the smart lawn mower is in a lower gear, the bottom of the protective mechanism is higher than the cutter disc, that is, it cannot provide protection for the cutter disc, which will inevitably reduce the safety of the smart lawn mower.

[0007] In summary, in view of the defects of the existing technology, it is necessary to provide a new intelligent lawn mower that can not only ensure cutting to the edge, but also has strong safety and good passability when used, so as to better meet the comprehensive needs of users. Summary of the Invention

[0008] In view of the deficiencies in the prior art, one purpose of this application is to provide a cutting device and an intelligent lawn mower with strong safety and good passability, which are particularly suitable for scenarios where it is necessary to ensure cutting to the edge and can better meet the comprehensive needs of users.

[0009] The above-mentioned purpose of the present invention can be achieved by adopting the following technical solutions:

[0010] An intelligent lawn mower comprises: a housing, a moving component for driving the intelligent lawn mower to move; a cutting motor for providing driving force for a cutting operation, and a cutting device for performing a cutting operation driven by the cutting motor, wherein the cutting device comprises: a cutting piece capable of moving under the drive of the cutting motor; a protective structure comprising a bottom guard, wherein the bottom guard is located below the cutting piece to establish a protective barrier below the cutting piece; the protective structure is stationary relative to the cutting piece in the height direction; and at least when the cutting device is lower than the housing, the protective structure can drive the cutting device to move upward relative to the housing when subjected to an external force from bottom to top.

[0011] In a preferred embodiment, the cutting device is eccentrically arranged below the housing, and is biased toward one side of the housing.

[0012] In a preferred embodiment, the distance from the cutting member to the outermost side of the housing is 20 mm to 30 mm.

[0013] In a preferred embodiment, the protective structure further includes side guards, and the side guards are located on the sides of the cutting member to establish a protective barrier on the sides of the cutting member.

[0014] In a preferred embodiment, the cutting member is adjustable in height, and the side protection and the bottom protection are raised and lowered along with the cutting member.

[0015] In a preferred embodiment, at least when the cutting member is located at the lowest cutting height, the lowest ends of the side guards and the bottom guards are lower than the bottom end of the casing.

[0016] In a preferred embodiment, the intelligent lawn mower further includes a floating height adjustment mechanism, which is used to allow the protective structure to drive the cutting element to move upward when it is subjected to an external force from bottom to top.

[0017] In a preferred embodiment, the maximum height of the cutting member corresponding to the upward movement is between 50 mm and 55 mm.

[0018] In a preferred embodiment, the protection structure further includes a protection cover, which is arranged above the cutting member and connected to the side protection.

[0019] In a preferred embodiment, the side protection extends downward from one side of the protective cover to below the cutting piece and is connected to the bottom protection, and a chip removal channel is formed between the protective structure and the cutting piece.

[0020] In a preferred embodiment, the cutting element includes a cutter disc and a cutting blade installed on the cutter disc, the bottom protection is located below the cutting blade of the cutting element, and the height spacing thereof is set between 5 mm and 10 mm; the horizontal spacing from the edge of the cutting element to the side protection is set between 5 mm and 10 mm.

[0021] In a preferred embodiment, the bottom guard extends along the traveling direction of the intelligent lawn mower, and the length of the bottom guard is greater than the cutting diameter of the cutting device.

[0022] In a preferred embodiment, the bottom protection is provided with a grass inlet, and the grass inlet is a strip-shaped gap.

[0023] A cutting device comprises: a cutting member, which can be driven to move; a protective structure, including a bottom guard, wherein the bottom guard is located below the cutting member to establish a protective barrier below the cutting member; the protective structure is stationary relative to the cutting member in the height direction; at least when the cutting device is in the lowest cutting position, the protective structure can drive the cutting device to move upward when subjected to an external force from bottom to top.

[0024] In a preferred embodiment, the protective structure also includes side protection, which is located on the side of the cutting piece to establish a protective barrier on the side of the cutting piece. The cutting device is connected to the cutting motor in a transmission manner. The protective structure also includes a protective cover and a motor barrel arranged outside the cutting motor. The upper end of the protective cover is connected to the motor barrel, and the lower end of the protective cover is used to connect the side protection close to the side of the casing. The side protection extends downward from the protective cover to the bottom of the cutting piece and is fixed to the bottom protection; one end of the bottom protection is fixed to the side protection, and the other end extends to the bottom of the cutting piece; a chip removal channel is formed between the protective structure and the cutting piece opposite to it.

[0025] Beneficial effects

[0026] The intelligent lawn mower provided in the embodiments of the present application has protective structures arranged on the sides and below the cutting member, and the protective structure and the cutting member are relatively stationary in the height direction, thereby ensuring that at least when the cutting device is lower than the housing, the protective structure can drive the cutting device to move upward relative to the housing when subjected to an external force from bottom to top, thereby ensuring that the lawn mower has strong safety and good passability, is particularly suitable for use scenarios where cutting to the edge is required, and can better meet the comprehensive needs of users.

[0027] With reference to the following description and drawings, the specific embodiments of the present application are disclosed in detail, indicating the manner in which the principles of the present application can be adopted. It should be understood that the embodiments of the present application are not limited in scope.

[0028] Features described and / or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

[0029] It should be emphasized that the term "include / comprising" when used herein refers to the presence of features, integers, steps or components, but does not exclude the presence or addition of one or more other features, integers, steps or components. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the implementation methods of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the implementation methods or the description of the prior art. Obviously, the drawings described below are only some implementation methods of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without expending creative labor.

[0031] Figure 1 A top view of a smart lawn mower provided in one embodiment of the present application;

[0032] Figure 2 for Figure 1 Bottom view of the smart lawn mower in [Image file name];

[0033] Figure 3 for Figure 1 The main view of the smart lawn mower in the;

[0034] Figure 4 for Figure 1 AA cross-sectional view of the smart lawn mower in the lowest gear;

[0035] Figure 5 for Figure 1 AA cross-sectional view of the smart lawn mower in the highest gear;

[0036] Figure 6 This is a schematic structural diagram of a cutting device provided in one embodiment of the present application.

[0037] Description of reference numerals:

[0038] 1. Housing; 11. Front end; 12. Rear end; 13. First side; 14. Second side; 15. Top surface; 16. Bottom surface;

[0039] 2. Mobile components;

[0040] 3. Cutting device; 30. Cutting element; 31. Protective cover; 310. Protective structure; 311. Side protection; 312. Bottom protection; 32. Cutting motor; 33. Motor cylinder; 34. Connecting sleeve; 35. Base;

[0041] 4. Floating height adjustment mechanism; 40. Gear adjustment part;

[0042] F. Direction of advance;

[0043] L0, central axis;

[0044] L1, cutting to the margin;

[0045] S, cutting circle. DETAILED DESCRIPTION

[0046] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, modifications of various equivalent forms of the present invention by those skilled in the art all fall within the scope defined by the claims attached to this application.

[0047] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be an element centered thereon. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementations.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are intended only to describe specific embodiments and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0049] The present application specification provides a cutting device and an intelligent lawn mower, which can ensure cutting to the edge while having strong safety and good passability during use, thereby better meeting the comprehensive needs of users.

[0050] Please refer to Figure 1 、 Figure 2 and Figure 3 The smart lawn mower shown generally includes: a control unit for controlling its automatic movement and cutting operations; a housing 1; a moving assembly 2 for driving the smart lawn mower; a cutting motor 32 for providing driving force for the cutting operation; and a cutting device 3 for performing the cutting operation driven by the cutting motor 32. Furthermore, the smart lawn mower may also include a floating height adjustment mechanism 4 for adjusting the height of the cutting device 3 from the ground. Specifically, the floating height adjustment mechanism 4 may only limit the current lowest position of the cutting device 3, without restricting the upward movement of the cutting device 3.

[0051] Please refer to Figures 4 to 6 The cutting device 3 may include: a cutting member 30 that can move under the drive of the cutting motor 32 and a protective structure 310 for establishing a protective barrier for the cutting member 30, and the cutting member 30 includes a cutter disc and a cutting blade installed on the cutter disc.

[0052] The cutting element 30 is driven by the cutting motor 32 to move. Specifically, the protective structure 310 may include a bottom guard 312. The bottom guard 312 is located below the cutting element 30 to form a protective barrier below the cutting element 30. The protective structure 310 may also include side guards 311. The side guards 311 are located to the sides of the cutting element 30 to form a protective barrier to the sides of the cutting element 30.

[0053] In the height direction, the protective structure 310 is stationary relative to the cutting element 30. At least when the cutting element 3 is lower than the housing 1, the protective structure 310 can drive the entire cutting element 3 upward when subjected to an external force from below, without being limited by the floating height adjustment mechanism 4. This ensures that the intelligent lawn mower has strong safety and good passability, and better meets the comprehensive needs of users.

[0054] When the cutting device 3 is lower than the housing 1, that is, exposed downward from the housing 1, the intelligent lawn mower's obstacle-crossing ability is primarily determined by the position of the cutting device 3. To prevent the cutting device 3 from encountering obstacles that could affect the intelligent lawn mower's progress when in a lowered position, the protective structure 310 follows the cutting element 30 up and down, creating a protective barrier for the cutting element 30 at any height, preventing obstacles from directly contacting the cutting element 30 and potentially causing damage or injury. This application utilizes a floating height adjustment mechanism 4 that allows the cutting device 3 to move upward under external force when there is room for it to move upward, thereby improving the machine's maneuverability.

[0055] In addition, when the cutting device 3 is not lower than the housing 1, there may be a scenario where the cutting device 3 needs to be lifted upward. Specifically, for example, when encountering a small animal that sneaks into the bottom of the housing 1, the cutting device 3 can be lifted upward by the floating height adjustment mechanism to prevent the cutting piece 30 from directly contacting the small animal, thereby effectively protecting the small animal. Alternatively, when the smart lawn mower is in a non-working state, since the cutting piece 30 is relatively sharp, when the cutting piece 30 is relatively close to the housing 1, the user's fingers may come into contact with the cutting piece 30 during the process of carrying it by hand. The present application provides a protective structure 310 on the side of the cutting piece 30 close to the housing 1, and when the protective structure 310 is subjected to external force, for example, when the finger contacts the bottom protection 312, it can drive the entire cutting device 3 to lift upward, thereby preventing the cutting piece 30 from contacting the finger, thereby improving the safety of the smart lawn mower.

[0056] In this embodiment, the housing 1 is formed with a hollow cavity of a certain size for mounting various parts of the smart lawn mower. Along the forward direction F of the smart lawn mower, the housing 1 has a front end 11 and a rear end 12 opposite to each other, a first side 13 and a second side 14 connecting the front end 11 and the rear end 12, a top surface 15 and a bottom surface 16. Figure 1 As shown, along the advancing direction F, the first side 13 is the right side of the housing 1 , and the second side 14 is the left side of the housing 1 .

[0057] In this embodiment, based on the dimensions of the housing 1 and the cutting device 3, as well as the overall layout of the machine, the cutting device 3 is disposed eccentrically below the housing 1, toward one side of the housing 1. Specifically, along the forward direction F of the intelligent lawn mower, the intelligent lawn mower has a central axis L0, and the center of the cutting element 30 is offset toward one side of the central axis L0, for example, to the right of the central axis L0.

[0058] In this embodiment, the cutting element 30 can be driven by the cutting motor 32 to perform rotational motion, reciprocating cutting motion, or other motion forms that can achieve mowing. In the embodiment of the present application, the rotational motion of the cutting element 30 is used as an example for explanation. Other motion forms can refer to the rotational motion, and this application will not elaborate on them here.

[0059] When the cutting element 30 is driven by the cutting motor 32, the center of the cutting circle S formed by the cutting element 30 deviates from the central axis L0 of the intelligent lawn mower. The distance between the edge of the cutting circle S formed by the rotating cutting element 30 and the housing 1 is within a predetermined range. The distance between the cutting circle S formed by the rotating cutting element 30 and the housing 1 (the first side 13 in the figure) is the cutting margin distance L1. By controlling the distance between the cutting element 30 and the housing 1, the cutting device 3 is brought sufficiently close to the outer wall of the housing 1 to cut grass at the boundary line or the edge of an obstacle, achieving cutting to the edge and eliminating the trouble of manual trimming.

[0060] In this embodiment, taking into account the spatial interference problem that the cutting member 30 of the cutting device 3 needs to overcome when rotating, a protective structure 310 is provided between the cutting member 30 and the housing 1, and the predetermined range is optionally determined to be between 20 mm and 30 mm.

[0061] In this embodiment, the cutting element 30 can be specifically in the form of a rotatable cutter disc. The protective cover 31 can be coaxially arranged with the cutting element 30 and surround the cutting element 30. The cutting element 30 can rotate under the drive of the cutting motor 32, forming a central axis of rotation. The protective structure 310 is relatively stationary relative to the cutting element 30 along the height direction (i.e., the extension direction of the central axis of rotation) and can move in the height direction under the external force applied from bottom to top by the floating height adjustment mechanism.

[0062] Specifically, the protective structure 310 includes a protective cover 31 and a motor cylinder 33 disposed outside the cutting motor 32. The upper end of the protective cover 31 is connected to the motor cylinder 33, and the lower end of the protective cover 31, near the side of the housing 1, is connected to the side guard 311. The protective cover 31 and the side guard 311 can be integrally formed, or they can be connected by a fixed connection. The protective structure 310 maintains synchronous movement with the cutting element 30.

[0063] There are many ways to achieve relative stillness of the protective structure 310 and the cutting element 30 in the height direction. Figure 3As shown, the protective cover 31 can be fixed to the motor cylinder 33 by a fixed connection method (such as screws). The cutter disc can be fixed to the connecting sleeve 34 by a fixed connection method (such as screws). The connecting sleeve 34 is fixed to the rotating shaft of the cutting motor 32 by a fixed connection method (for example, interference fit), and the cutting motor 32 is fixed to the motor cylinder 33 by a fixed connection method (such as screws), thereby finally achieving the relative position between the cutting disc and the protective structure 310 along the height direction. It should be noted that the above-mentioned fixed connection method is not limited to the above-mentioned examples, and other methods that can achieve fixed connection can also be used here.

[0064] like Figure 4 and Figure 5 As shown, in one embodiment, the intelligent lawn mower is provided with multiple gears, including a highest gear and a lowest gear. The floating height adjustment mechanism 4 includes a gear adjustment member 40, which is used to adjust the gear and change the height of the cutting member 30 from the ground. At least when the intelligent lawn mower is in the lowest gear, the lowermost end of the cutting member 3 is lower than the bottom end of the housing 1.

[0065] In this embodiment, the gear position of the intelligent lawn mower refers to the distance between the cutting blade of the cutting member 30 and the ground. This distance represents how high the grass will be cut when the machine is running. Specifically, the gear position indication is 20 (mm), 30 (mm), 40 (mm), 50 (mm), 60 (mm), and each gear position corresponds to a cutting height. Alternatively, the gear position indication can be represented by numbers such as 1, 2, 3, 4, 5, and each value corresponds to a cutting height. Of course, the gear position indication is not limited to a value, and can also be other characters, such as English letters, Roman letters, etc., and the specific application does not make specific limitations here. Figure 4 As shown in FIG, when the intelligent lawn mower is at the lowest gear, the distance H1 between the tip of the cutting element 30 and the ground can be 20 mm. Figure 5 As shown, when the intelligent lawn mower is at the highest gear, the distance H2 between the tip of the cutting element 30 and the ground can be 60 mm.

[0066] In this embodiment, the floating height adjustment mechanism 4 is used to limit only the current lowest position of the cutting device 3. Specifically, the floating height adjustment mechanism 4 can be used to adjust the gear position and determine the current height of the cutting member 30 from the ground without limiting the upward movement of the cutting device 3 when subjected to an external force from bottom to top.

[0067] Specifically, the floating height adjustment mechanism 4 can be provided with a height adjustment structure and a gear adjustment member 40. The gear adjustment member 40 can be in the form of a knob. By rotating the knob to different gears, the height adjustment structure is driven to adjust the height of the cutting device 3 above the ground. Specifically, the height adjustment structure can be a multi-link structure, a spring structure, or other floating height adjustment methods, which are not specifically limited in this application.

[0068] For example, the multi-link structure can be a four-link structure, in which the movement of the links can drive the up and down movement of the motor cylinder 33, thereby achieving the height adjustment of the motor cylinder 33 and the cutting device 3. This height adjustment structure can limit the distance between the motor cylinder 33 and the lowest point of the working surface at the current cutting height, that is, determine the distance between the cutting blade of the cutting element 30 and the ground. The range of its upward movement is determined by the distance between the base 35 and the motor cylinder 33. The distance between the base 35 and the motor cylinder 33 determines the distance the motor cylinder 33 can float upward.

[0069] It should be noted that as long as the motor barrel 33 has a sufficient floating distance from the base 35, the cutting device 3 can float upward under the drive of the floating height adjustment mechanism 4 when encountering an obstacle in all gears, thereby achieving obstacle clearance. However, in order to prevent the overall height of the intelligent lawn mower from being too high, and at the same time, when the intelligent lawn mower is in the highest gear, the height of the cutting element 30 from the ground is already large enough to basically not affect obstacle clearance, it can be set that when the intelligent lawn mower is in the highest gear, the top of the motor barrel 33 abuts the base 35 and can no longer float. In other words, when the intelligent lawn mower is not in the highest gear, the protective structure 310 contacts an external obstacle, and the cutting device 3 can move upward under the drive of the floating height adjustment mechanism 4.

[0070] Generally, to ensure smooth movement of the intelligent lawn mower, the lowest end of the housing 1 is positioned a certain distance from the ground, for example, approximately 40 mm. When the intelligent lawn mower is in its lowest gear, the cutting element 30 is at its lowest point, for example, 20 mm from the ground, and the cutting device 3 must be exposed from the housing 1. To ensure that the cutting device 3 can fully enter the housing 1 under the control of the floating height adjustment mechanism 4 even when the intelligent lawn mower is in its lowest gear, the maximum height that the lowest point of the cutting element 30 can move upward relative to the lowest point of the front end 11 of the housing 1 can be selected to be between 50 mm and 55 mm.

[0071] Please refer to Figure 6In one embodiment, the protective structure 310 may include side guards 311 and a bottom guard 312. The side guards 311 extend downward from the protective cover 31 to below the cutting element 30 and are fixed to the bottom guard 312. One end of the bottom guard 312 is fixed to the side guard 311, and the other end extends below the cutting element 30. A chip removal channel is formed between the protective structure 310 and the cutting element 30.

[0072] In this embodiment, the side guard 311 and the bottom guard 312 can be parallel to the housing 1 as a whole along the forward direction F of the intelligent lawn mower. Figure 6 In the cross-sectional view in FIG, the side guard 311 may have a first extension direction, and the bottom guard 312 may have a second extension direction. The first extension direction is substantially perpendicular to the second extension direction.

[0073] Among them, the first extension direction can be parallel or substantially parallel to the direction of gravity. The second extension direction can be parallel or substantially parallel to the horizontal direction. When the bottom protection 312 is substantially parallel to the side protection 311, an effective gap can be formed between the protective structure 310 and the cutting element 30 in the most space-saving way. The gap is used to form the chip removal channel. During the operation of the intelligent lawn mower, the broken grass, soil, broken branches and other garbage cut by the cutting element 30 can be discharged along the chip removal channel to prevent them from getting stuck on the cutting element 30 and affecting the normal operation of the intelligent lawn mower.

[0074] Specifically, to ensure smooth chip removal while preventing the intelligent mower from cutting to the edge, the distance between the edge of the cutting element 30 and the side guard 311 can be between 5 mm and 10 mm. Furthermore, to ensure smooth chip removal while also properly controlling the height of the intelligent mower, the height distance between the lower surface of the cutting blade of the cutting element 30 and the bottom guard 312 can be between 5 mm and 10 mm.

[0075] In this embodiment, the bottom guard 312 is located below the cutting element 30 to establish a protective barrier below the cutting element 30. When in use, the bottom guard 312 will come into contact with the grass to be cut and is a wear part. In order for the smart lawn mower to be able to cut smoothly during use, the bottom guard 312 can be provided with a plurality of comb teeth, and a grass inlet for grass to pass through is formed between two adjacent comb teeth. The grass inlet can be a strip-shaped gap. The side guard 311 is provided between the housing 1 and the cutting element 30, mainly for isolating the cutting element 30 and the housing 1, thereby establishing a protective barrier on the side of the cutting element 30.

[0076] Taking into account the different functions of the bottom protection 312 and the side protection 311, as well as the overall production process of the protective cover 31 and the protective structure 310, the bottom protection 312 can be fixed to one end of the side protection 311 by a detachable connection. Specifically, the detachable connection method can be a screw connection, of course, it can also be other detachable connection methods, and this application does not make specific limitations here. Taking into account the different functions of the bottom protection 312 and the side protection 311, the materials of the bottom protection 312 and the side protection 311 can be selected differently. The material hardness of the bottom protection 312 is greater than the material hardness of the side protection 311, and the material density of the side protection 311 is less than the material density of the bottom protection 312, so as to improve the overall durability of the protective structure 310 and provide reliability when the whole machine is used. Specifically, the material of the bottom protection 312 can be a wear-resistant metal material, and the material of the side protection 311 can be a light-density plastic material, so as to reduce the density of the protective cover 31 as much as possible and reduce the resistance when the cutting device 3 floats up.

[0077] This specification also provides a cutting device 3, which includes: a cutting piece 30 and a protective structure 310. The cutting piece 30 can be driven to move. The protective structure 310 includes side protection 311 and bottom protection 312. The side protection 311 is located on the side of the cutting piece 30 to establish a protective barrier on the side of the cutting piece 30. The bottom protection 312 is located below the cutting piece 30 to establish a protective barrier below the cutting piece 30. The protective structure 310 is stationary relative to the cutting piece 30 in the height direction; at least when the cutting device 3 is in the lowest cutting position, the protective structure 310 can drive the cutting device 3 to move upward when subjected to an external force from bottom to top.

[0078] The cutting device 3 is in transmission connection with the cutting motor 32, and the protective structure 310 further includes a protective cover 31 and a motor cylinder 33 disposed outside the cutting motor 32. The upper end of the protective cover 31 is connected to the motor cylinder 33, and the lower end of the protective cover 31 is used to connect to the side guard 311 close to the side of the housing 1. The side guard 311 extends downward from the protective cover 31 to the bottom of the cutting member 30 and is fixed to the bottom guard 312; one end of the bottom guard 312 is fixed to the side guard 311, and the other end extends to the bottom of the cutting member 30; a chip removal channel is formed between the protective structure 310 and the cutting member 30 opposite it.

[0079] In this embodiment, the specific composition, structure, coordination relationship, and functions that can be achieved by the cutting device 3 can be found in the detailed description of the above-mentioned smart lawn mower embodiment, and this application will not elaborate on them here. It should be noted that in addition to being used in smart lawn mowers, the cutting device 3 can also be used in other tools that require guaranteed passability and safety.

[0080] It should be noted that, in the description of this application, the terms "first," "second," etc., are used solely for descriptive purposes and to distinguish similar objects. There is no order of precedence between the two, nor should they be understood to indicate or imply relative importance. Furthermore, in the description of this application, unless otherwise specified, "plurality" means two or more.

[0081] The above-mentioned various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referenced to each other. Each embodiment focuses on the differences from other embodiments.

[0082] The above descriptions are merely a few embodiments of the present invention. Although the embodiments disclosed herein are as described above, the contents described herein are merely embodiments adopted to facilitate understanding of the present invention and are not intended to limit the present invention. Any person skilled in the art of the present invention may make any modifications and changes in the form and details of the embodiments without departing from the spirit and scope disclosed herein. However, the scope of patent protection of the present invention shall still be subject to the scope defined by the appended claims.

Claims

1. An intelligent lawn mower, characterized in that: include: A housing, a moving assembly for driving the intelligent lawn mower, a cutting motor for providing driving force for the cutting operation, and a cutting device for performing the cutting operation driven by the cutting motor, wherein the cutting device comprises: a cutting member capable of moving under the drive of the cutting motor; a protective structure including a bottom guard positioned below the cutting element to establish a protective barrier below the cutting element; The protective structure is stationary relative to the cutting element in the height direction; The cutting device is eccentrically arranged below the housing, and is biased toward one side of the housing; At least when the cutting device is lower than the housing, the protective structure can drive the cutting device to move upward relative to the housing when subjected to an external force from bottom to top; The intelligent lawn mower further includes a floating height adjustment mechanism for allowing the protective structure to drive the cutting element to move upward when subjected to an external force from bottom to top; The intelligent lawn mower is provided with a plurality of gears, and the floating height adjustment mechanism includes a gear adjustment member, which is used to adjust the gear to change the height of the cutting member from the ground.

2. The intelligent lawn mower according to claim 1, wherein: The distance between the cutting piece and the outermost side of the casing is 20 mm to 30 mm.

3. The intelligent lawn mower according to claim 1, wherein: The protective structure further comprises side guards, which are located on the sides of the cutting member to establish a protective barrier on the sides of the cutting member.

4. The intelligent lawn mower according to claim 3, wherein: The cutting piece is adjustable in height, and the side protection and the bottom protection are raised and lowered along with the cutting piece.

5. The intelligent lawn mower according to claim 4, characterized in that: At least when the cutting member is located at the lowest cutting height, the lowest ends of the side guards and the bottom guards are lower than the bottom end of the housing.

6. The intelligent lawn mower according to claim 1, wherein: The maximum height of the cutting member corresponding to the upward movement is between 50 mm and 55 mm.

7. The intelligent lawn mower according to claim 3, wherein: The protection structure also includes a protection cover, which is arranged above the cutting piece and connected to the side protection.

8. The intelligent lawn mower according to claim 7, wherein: The side protection extends downward from one side of the protective cover to below the cutting piece and is connected to the bottom protection. A chip removal channel is formed between the protection structure and the cutting piece.

9. The intelligent lawn mower according to claim 8, characterized in that: The cutting element includes a cutter disc and a cutting blade installed on the cutter disc. The bottom protection is located below the cutting blade of the cutting element, and the height spacing thereof is set between 5 mm and 10 mm; the horizontal spacing from the edge of the cutting element to the side protection is set between 5 mm and 10 mm.

10. The intelligent lawn mower according to claim 1, wherein: The bottom protection extends along the traveling direction of the intelligent lawn mower, and the length of the bottom protection is greater than the cutting diameter of the cutting device.

11. The intelligent lawn mower according to claim 1, wherein: The bottom protection is provided with a grass inlet, and the grass inlet is a strip-shaped gap.

12. A cutting device, characterized in that: include: A cutting member capable of being driven to move; A protective structure comprising a bottom guard located below the cutting element to form a protective barrier below the cutting element; the protective structure being stationary relative to the cutting element in a height direction; The cutting device is eccentrically arranged below the housing, and is biased toward one side of the housing; At least when the cutting device is at the lowest cutting position, the protective structure can drive the cutting device to move upward when subjected to an external force from bottom to top; The cutting device is connected to the housing of the intelligent lawn mower via a floating height adjustment mechanism, and the floating height adjustment mechanism is used to allow the cutting element to move upward when the protective structure is subjected to an external force from bottom to top; The intelligent lawn mower is provided with a plurality of gears, and the floating height adjustment mechanism includes a gear adjustment member, which is used to adjust the gear to change the height of the cutting member from the ground.

13. The cutting device according to claim 12, wherein: The protective structure also includes side protection, which is located on the side of the cutting piece to establish a protective barrier on the side of the cutting piece. The cutting device is connected to the cutting motor in a transmission manner. The protective structure also includes a protective cover and a motor cylinder arranged outside the cutting motor. The upper end of the protective cover is connected to the motor cylinder, and the lower end of the protective cover is used to connect the side protection close to the side of the casing. The side protection extends downward from the protective cover to below the cutting piece and is fixed to the bottom protection; one end of the bottom protection is fixed to the side protection, and the other end extends to below the cutting piece; a chip removal channel is formed between the protective structure and the cutting piece opposite to it.

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