Mower

Abstract

The present application relates to the technical field of mowers, and provides a mower. The mower comprises: a body provided with an output shaft; a cutting mechanism located below the body and fitted with the output shaft, wherein the cutting mechanism comprises a cutter disc and blades mounted on the cutter disc; and a protection mechanism, wherein at least part of the protection mechanism is located below the cutting mechanism, the protection mechanism comprises at least two strip-shaped members which are arranged at intervals, each strip-shaped member comprises a middle part, the cutter disc is located above the middle part, and the length of the middle part is gradually increased in a direction from the outer side to the inner side of the cutting mechanism. According to the present application, the protection mechanism is configured to comprise at least two strip-shaped members, and the structure of the protection mechanism can be simplified by means of the two strip-shaped members, so that machining and mounting are facilitated, thereby reducing the cost.

Description

Lawn mower

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on December 22, 2023, with application number 202323529824.1 and application name “Lawn Mower”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of electric tools, and in particular to a lawn mower. Background Art

[0003] With the development of automation technology and artificial intelligence, smart lawn mowers can automatically perform mowing tasks, saving people a lot of time and providing great convenience to life.

[0004] Due to safety regulations and energy consumption requirements, smart lawn mowers currently on the market are generally designed with smaller blades, which reduces the cutting width and makes it impossible to cut grass at the edge of the lawn. The edge of the lawn needs to be trimmed manually, which reduces the degree of automation of the smart lawn mower.

[0005] In addition, lawn mowers are equipped with protective mechanisms to meet safety regulations. Currently, the protective structures are complex and have high production costs.

[0006] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Summary of the Invention

[0007] The embodiment of the present application provides a lawn mower that can simplify the structure of a protective mechanism and reduce costs.

[0008] The present application provides a lawn mower, which comprises: a body having an output shaft;

[0009] a cutting mechanism, the cutting mechanism being located below the body and being mounted in cooperation with the output shaft, the cutting mechanism comprising a cutter disc and a blade mounted on the cutter disc;

[0010] a protection mechanism, at least a portion of which is located below the cutting mechanism;

[0011] The protection mechanism includes at least two spaced-apart strips, each strip including a middle portion, the cutter disc being located above the middle portion, and the length of the middle portion gradually increasing from the outside to the inside of the cutting mechanism.

[0012] The present invention configures the guard mechanism to include at least two strips, which simplify the guard mechanism's structure, facilitate processing and installation, and thus reduce costs. Furthermore, the strips are spaced apart, and the gaps between the strips directly form a grass inlet, eliminating the need for a specific grass inlet. This simplifies the guard mechanism's structure and reduces the cost of the lawn mower.

[0013] In the direction from the inside to the outside of the cutting mechanism, the length of the middle part gradually increases, so that the accommodating area of ​​the cutting mechanism also gradually increases in the direction from the inside to the outside of the cutting mechanism to match the circular contour of the cutter disc and prevent interference between the cutting mechanism and the protective mechanism.

[0014] By providing strips at intervals at the bottom of the cutting mechanism as a guard, the strips more effectively address the problem of grass getting stuck at the bottom of the guard, compared to other guard structures, such as trough-type structures. Furthermore, using strips as a guard reduces the overall weight of the guard. When the guard moves up and down or left and right with the cutting mechanism, the lighter the guard, the smaller the corresponding drive load on the drive motor. This allows more energy from the mower's battery pack to be distributed to the cutting mechanism and travel mechanism, thereby improving the mowing efficiency of the mower.

[0015] In addition, the strip also acts as a reinforcing rib, which can increase the stability of the protective mechanism (for example, when the strip is connected to the first protective part, the strip can reinforce the structure of the first protective part and increase the stability of the structure of the first protective part), so that the protective mechanism will not be deformed when it touches an obstacle, thereby providing better protection for the cutting mechanism.

[0016] In addition, the bar provides a better grip for users when carrying the lawn mower. When the lawn mower is in a stopped state for transportation, the user can hold the bar and carry the lawn mower, thereby improving the stability of the lawn mower during transportation and avoiding the problem of the lawn mower falling during transportation.

[0017] In a possible implementation, there are only two strip-shaped members in the protection mechanism, and the middle portions of the two strip-shaped members are arranged in parallel.

[0018] The fewer the number of strips, the lighter the overall weight of the guard mechanism. When there is only one strip, the bottom protection of the cutting mechanism is poor, affecting the safety performance of the lawn mower. When there are two strips, the safety performance of the cutting mechanism has been verified to meet safety regulations. Compared to when there are three or more strips, the overall weight of the guard mechanism is lighter, and less energy is required to drive it.

[0019] In one possible implementation, the cutter disc is circular, the plane where the outer circumference of the cutter disc lies is a first plane, and the orthographic projection of the innermost middle portion on the first plane at least partially overlaps with the cutter disc.

[0020] The orthographic projection of the middle portion on the first plane at least partially overlaps with the cutter disc. When there are obstacles hidden in the grass, the middle portion can block most of the obstacles from direct contact with the cutter disc, avoiding damage to the cutter disc caused by touching the obstacles and improving the service life of the cutter disc.

[0021] In one possible implementation, the orthographic projection of the outermost middle portion on the first plane does not coincide with the cutter head.

[0022] The orthographic projection of the outermost middle portion on the first plane does not overlap with the cutter disc, so that the outer periphery of the cutter disc is between the innermost middle portion and the outermost middle portion, ensuring the protective effect of the strip on the cutter disc.

[0023] In one possible implementation, the protective mechanism is provided in two, the distance between the two longest middle parts of the two protective mechanisms is a first distance, the distance between the outermost middle part and the innermost middle part of each protective mechanism is a second distance, and the first distance is greater than the second distance.

[0024] In a possible implementation, the two protection mechanisms are symmetrically arranged along the central axis in the length direction of the fuselage.

[0025] The two protection mechanisms both adopt the strip-shaped protection form, which can further reduce the overall weight of the protection mechanism and reduce the energy consumption required for the movement of the protection mechanism.

[0026] In a possible implementation, the strip further includes a bending portion, and the bending portion is respectively provided at both ends of the middle portion.

[0027] The bent portion is used to connect with other structures in the protective mechanism, and fixed installation of the strip member can be achieved without using additional connecting structures, which simplifies the installation steps and reduces the installation cost.

[0028] In one possible implementation, the length of the bent portion is smaller than the length of the middle portion.

[0029] The length of the bent portion being shorter than the length of the middle portion can improve the stability of the installation of the strip member and prevent the strip member from being deformed during operation of the lawn mower.

[0030] In a possible implementation manner, the strip is parallel to the forward direction of the lawn mower.

[0031] Setting the strips parallel to the forward direction of the mower can avoid the strips from pressing the grass and getting stuck to the greatest extent, thereby improving the mowing efficiency.

[0032] In one possible implementation, the cross section of the strip is circular.

[0033] Setting the cross section of the strip to a circular shape can reduce the friction between the strip and the lawn, and reduce the probability of the protective mechanism getting stuck in the grass; in addition, setting the strip to a circular shape can prevent the sharp corners of the strip from causing pressure on the user's hands when the user holds the strip to carry the machine.

[0034] In one possible implementation, the blade is located between the cutter disc and the middle portion.

[0035] In one possible implementation, the end of the middle portion close to the front end of the lawn mower is the first end, the end of the middle portion close to the rear end of the lawn mower is the second end, the first end of the innermost middle portion is closer to the front end of the lawn mower relative to the first end of the outermost middle portion, and the second end of the innermost middle portion is closer to the rear end of the lawn mower relative to the second end of the outermost middle portion.

[0036] In one possible implementation, the body has a first side edge and a second side edge arranged opposite to each other along a first direction, wherein the first direction intersects with a forward direction of the lawn mower;

[0037] The body has a third side edge and a fourth side edge arranged opposite to each other along a second direction, wherein the second direction is a forward direction of the lawn mower;

[0038] In the first direction, the distance between the outer edge of the cutting mechanism and the first side edge of the fuselage is a first distance, and the distance between the outer edge of the cutting mechanism and the second side edge of the fuselage is a second distance;

[0039] In the second direction, the distance between the outer edge of the cutting mechanism and the fourth side edge of the body is a fourth distance, and the fourth side edge is the outer side of the rear side of the lawn mower;

[0040] The fourth distance is greater than the first distance and greater than the second distance.

[0041] The fourth distance is greater than the first distance and greater than the second distance, which can ensure that the distance between the cutting mechanism and the fourth edge of the fuselage is larger, thereby ensuring higher safety performance at the fourth edge of the fuselage.

[0042] In one possible implementation, the body has a first side edge and a second side edge arranged opposite to each other along a first direction, wherein the first direction intersects with a forward direction of the lawn mower;

[0043] The protection mechanism further includes a first protection portion, which is arranged between the cutter disc and the first side edge and / or between the cutter disc and the second side edge.

[0044] In a possible implementation manner, along the forward direction of the lawn mower, the length of the first guard portion is greater than the length of the middle portion.

[0045] Setting the length of the first protective portion to be greater than the length of the middle portion can improve the protective effect of the first side edge and the second side edge of the lawn mower, thereby improving the safety performance of the lawn mower. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] 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 invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0047] FIG1 is a top view of a lawn mower provided in an embodiment of the present application;

[0048] FIG2 is a side view of a lawn mower provided in an embodiment of the present application;

[0049] FIG3 is a bottom view of a lawn mower provided in an embodiment of the present application;

[0050] FIG4 is a bottom view of a lawn mower with its protective mechanism removed provided by an embodiment of the present application;

[0051] FIG5 is a schematic structural diagram of a protection mechanism and a cutting mechanism of a lawn mower provided in an embodiment of the present application;

[0052] FIG6 is a schematic structural diagram of a protection mechanism and a cutting mechanism of a lawn mower provided in an embodiment of the present application;

[0053] FIG7 is a side view of a protection mechanism and a cutting mechanism of a lawn mower provided in an embodiment of the present application;

[0054] FIG8 is a schematic structural diagram of a protection mechanism and a cutting mechanism of a lawn mower provided in an embodiment of the present application;

[0055] FIG9 is a schematic structural diagram of a protection mechanism and a cutting mechanism of a lawn mower provided in an embodiment of the present application;

[0056] FIG10 is a schematic structural diagram of a protection mechanism and a cutting mechanism of a lawn mower provided in an embodiment of the present application;

[0057] FIG11 is a schematic structural diagram of a protection mechanism and a cutting mechanism of a lawn mower provided in an embodiment of the present application;

[0058] FIG12 is a side view of a protection mechanism and a cutting mechanism of a lawn mower provided in an embodiment of the present application;

[0059] FIG13 is a bottom view of a lawn mower provided in an embodiment of the present application;

[0060] FIG14 is a bottom view of a lawn mower with its protection mechanism removed provided in an embodiment of the present application.

[0061] Explanation of the accompanying reference numerals: 100-mower; 10-body; 11-first side edge; 12-second side edge; 13-third side edge; 14-fourth side edge; 20-cutting mechanism; 21-cutter disc; 22-blade; 23-mounting position; 24-fixing member; 30-protective mechanism; 30a-first protective mechanism; 30b-second protective mechanism; 31-mounting portion; 311-mounting hole; 32-first protective portion; 33-second protective portion; 331-strip member; 3311-bending portion; 3312-middle portion; 3313-connecting portion; 34-grass inlet; 35-guide plate; 40-driving wheel; 50-driven wheel. DETAILED DESCRIPTION

[0062] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0063] The lawn mower provided in the embodiment of the present application is described in detail below with reference to the accompanying drawings.

[0064] Figure 1 is a top view of a lawn mower provided in an embodiment of the present application. Figure 2 is a side view of a lawn mower provided in an embodiment of the present application. Figure 3 is a bottom view of a lawn mower provided in an embodiment of the present application.

[0065] The present application provides a lawn mower 100, as shown in Figure 1, the lawn mower 100 may include a body 10, the body 10 has an output shaft (not shown in the figure), the body 10 has a first side edge 11 and a second side edge 12 arranged opposite to each other along a first direction, and the first direction intersects with the forward direction of the lawn mower 100.

[0066] For example, the first direction may be perpendicular to the forward direction of the lawn mower 100, or the first direction may be set at an angle to the forward direction of the lawn mower 100, for example, 85°, 86°, etc. In the embodiment of the present application, there is no further limitation on the angle between the first direction and the forward direction of the lawn mower 100.

[0067] By arranging the first direction perpendicular to the forward direction of the lawn mower 100, the safety of the lawn mower 100 can be improved. For example, if the two ends in the forward direction of the lawn mower 100 are the front and rear ends of the lawn mower 100, then arranging the first direction perpendicular to the forward direction of the lawn mower 100 means that the first side edge and the second side edge of the body 10 correspond to the left and right sides of the lawn mower 100. This provides a protective barrier on both the left and right sides of the lawn mower 100, thereby improving the safety of the lawn mower 100.

[0068] As shown in FIG. 2 , the lawn mower 100 may further include a cutting mechanism 20 , wherein the cutting mechanism 20 is located below the body 10 and is installed in conjunction with the output shaft, and is used to perform cutting operations driven by the output shaft.

[0069] For example, the rotation centerline of the cutting mechanism 20 coincides with the axis of the output shaft. A control device may be provided on the body 10 to drive the output shaft to rotate, which in turn drives the rotating structure to rotate so that the rotating structure can perform cutting operations.

[0070] In some embodiments, the control device may be a motor, etc. In the embodiments of the present application, the specific structure of the control device is not further limited.

[0071] In one possible implementation, in the first direction, the cutting mechanism 20 can be located in the middle of the body 10. By arranging the cutting mechanism 20 in the middle of the body 10, the distances from the cutting mechanism 20 to the first side edge 11 and the second side edge 12 can be the same. This allows the force applied to the first side edge 11 and the second side edge 12 of the body 10 to be symmetrical during operation, making it easier for the body 10 to maintain balance and less likely to tip over.

[0072] As shown in Figure 3, the lawn mower 100 may also include a protective mechanism 30, which is arranged below the body 10. A protective mechanism 30 is provided between the first side edge 11 and the cutting mechanism 20 and between the second side edge 12 and the cutting mechanism 20. The protective mechanism 30 is used to establish a protective barrier at the first side edge 11, the second side edge 12 and the bottom of the body 10.

[0073] The lawn mower 100 in the embodiment of the present application improves safety by disposing a guard mechanism 30 between the cutting mechanism 20 and the first side edge 11 of the body 10, and between the cutting mechanism 20 and the second side edge 12 of the body 10. The guard mechanism 30 is positioned to form a protective barrier between the first side edge 11, the second side edge 12, and the bottom of the body 10, thereby enhancing safety. Furthermore, while ensuring safety regulations, the size of the cutting mechanism 20 can be increased, thereby achieving a larger cutting width. This allows the lawn mower 100 to get closer to the edge of the grass being cut, thereby providing a larger cutting range and reducing the need for manual trimming, thereby enhancing the automation of the intelligent lawn mower 100.

[0074] FIG4 is a bottom view of a lawn mower with its protection mechanism removed provided in an embodiment of the present application.

[0075] In the first direction, the distance between the outer edge of the cutting mechanism 20 and the first side edge 11 of the fuselage 10 is a first distance L1, and the distance between the outer edge of the cutting mechanism 20 and the second side edge 12 of the fuselage 10 is a second distance L2. In the second direction (direction Q), the distance between the outer edge of the cutting mechanism 20 and the third side edge 13 of the fuselage 10 is a third distance L3. The third distance L3 is greater than the first distance L1 and greater than the second distance L2. This ensures a greater distance between the cutting mechanism 20 and the third side edge 13 of the fuselage 10, thereby ensuring a higher level of safety at the third side edge 13 of the fuselage 10.

[0076] It should be noted that the first side edge 11 and the second side edge 12 of the fuselage 10 refer to the edges of the fuselage 10 located outside the fuselage 10 in the first direction and closest to the outer edge of the cutting mechanism 20 .

[0077] In one possible implementation, in the second direction (direction Q), the distance between the outer edge of the cutting mechanism 20 and the fourth side edge 14 of the fuselage 10 is a fourth distance L4. The fourth distance is greater than the first distance L1 and greater than the second distance L2. This ensures a greater distance between the cutting mechanism 20 and the fourth side edge 14 of the fuselage 10, thereby ensuring a higher safety performance at the fourth side edge 14 of the fuselage 10.

[0078] It should be noted that the outer edge of the cutting mechanism 20 refers to the outer edge of the cutting mechanism 20 at its maximum dimension. For example, as shown in the dotted circle in Figure 4 , when the blade 22 rotates to face the third side edge 13 of the body 10, the third distance L3 is the distance from the end of the blade 22 facing away from the cutter disc 21 to the third side edge 13. When the blade 22 rotates to face the fourth side edge 14 of the body 10, the fourth distance L4 is the distance from the end of the blade 22 facing away from the cutter disc 21 to the fourth side edge 14. The protective mechanism 30 will be described in detail below with reference to the accompanying drawings.

[0079] Figure 5 is a schematic diagram of the structure of the guard mechanism 30 and cutting mechanism 20 of a lawn mower 100 provided in an embodiment of the present application. Figure 6 is a schematic diagram of the structure of the guard mechanism 30 and cutting mechanism 20 of a lawn mower 100 provided in an embodiment of the present application. Figure 7 is a side view of the guard mechanism 30 and cutting mechanism 20 of a lawn mower 100 provided in an embodiment of the present application.

[0080] As shown in FIG. 4 and FIG. 5 , a protection mechanism 30 is provided between the first side edge 11 and the cutting mechanism 20 and between the second side edge 12 and the cutting mechanism 20 .

[0081] For example, the protective mechanism 30 located between the first side edge 11 and the cutting mechanism 20 is referred to as the first protective mechanism 30a, and the protective mechanism 30 located between the second side edge 12 and the cutting mechanism 20 is referred to as the second protective mechanism 30b. The first protective mechanism 30a and the second protective mechanism 30b are disposed on opposite sides of the cutting mechanism 20, and the structures of the first protective mechanism 30a and the second protective mechanism 30b can be the same. Of course, in other embodiments, the structures of the first protective mechanism 30a and the second protective mechanism 30b can also be different.

[0082] The following description will be made by taking the first protection mechanism 30 a and the second protection mechanism 30 b as an example in which the structures are the same.

[0083] In one possible implementation, the first guard mechanism 30a may include a first guard portion 32 and a second guard portion 33. The first guard portion 32 is disposed between the first side edge 11 and the cutting mechanism 20, so that the first guard portion 32 of the first guard mechanism 30a can establish a protective barrier between the cutting mechanism 20 and the first side edge 11. At least a portion of the second guard portion 33 of the first guard mechanism 30a is disposed below the cutting mechanism 20, and the second guard portion 33 of the first guard mechanism 30a is configured to establish a protective barrier below the cutting mechanism 20.

[0084] By configuring the first protection mechanism 30 a to include the first protection portion 32 and the second protection portion 33 , different positions of the first protection mechanism 30 a can form protection barriers at different orientations of the lawn mower 100 , thereby improving the safety of the lawn mower 100 .

[0085] The second guard mechanism 30b may include a first guard portion 32 and a second guard portion 33. The first guard portion 32 of the second guard mechanism 30b is disposed between the second side edge 12 and the cutting mechanism 20, thereby forming a protective barrier between the cutting mechanism 20 and the second side edge 12. At least a portion of the second guard portion 33 of the second guard mechanism 30b is disposed below the cutting mechanism 20, and the second guard portion 33 of the second guard mechanism 30b is configured to form a protective barrier below the cutting mechanism 20.

[0086] By configuring the second protection mechanism 30 b to include the first protection portion 32 and the second protection portion 33 , different positions of the second protection mechanism 30 b can form protection barriers at different orientations of the lawn mower 100 , thereby improving the safety of the lawn mower 100 .

[0087] Continuing with FIG5 , the protective mechanism 30 may further include a mounting portion 31, wherein the mounting portion 31 is used to securely connect the protective mechanism 30 to the body 10. For example, a first protective portion 32 may be connected to the mounting portion 31. A second protective portion 33 may also be connected to the mounting portion 31. Of course, in other embodiments, the second protective portion 33 may also be connected to the first protective portion 32 (see FIG11 ).

[0088] For example, the mounting portion 31, the first protective portion 32, and the second protective portion 33 can be fixedly connected or detachably connected by welding, riveting, clamping, integral molding, etc. In the embodiment of the present application, the connection method between the mounting portion 31, the first protective portion 32, and the second protective portion 33 is not further limited.

[0089] The mounting portion 31 is provided to connect the first and second guarding portions 32 and 33 to the body 10 , thereby improving the connection stability between the first and second guarding portions 32 and 33 and the body 10 , thereby increasing the service life of the lawn mower 100 .

[0090] For example, the mounting portion 31 can be a plate-shaped structure, and has mounting holes 311 for connecting to the body 10. The body 10 and the mounting portion 31 can be connected by screws. Of course, in other embodiments, the body 10 and the mounting portion 31 can also be connected by snapping, that is, a snap can be provided below the body 10, and the mounting portion 31 can be snapped into the snap. In the embodiment of the present application, the connection method between the body 10 and the mounting portion 31 is not further limited.

[0091] In one possible implementation, the first protective portion 32 can be plate-shaped. For example, the first protective portion 32 can be disposed at an end of the mounting portion 31 that is away from the center of the cutter disc 21, with one end of the first protective portion 32 connected to the mounting portion 31 and the other end extending toward the side away from the body 10 to below the cutter disc 21, so that the first protective portion 32 can establish a protective barrier on the side of the cutting mechanism 20. The first protective portion 32 and the mounting portion 31 can be formed by bending a single plate 90° or at other angles. In other embodiments, the first protective portion 32 can also have other shapes.

[0092] It should be noted that, as shown in FIG5 , the length of the first guard portion 32 in the forward direction (Q direction) of the lawn mower 100 may be shorter than the second guard portion 33. Of course, in other embodiments, as shown in FIG6 , the length of the first guard portion 32 in the forward direction of the lawn mower 100 may be greater than or equal to the second guard portion 33. This can expand the protection area of ​​the first guard portion 32 and thereby improve the safety performance of the lawn mower 100.

[0093] By configuring the first guard portion 32 in a plate shape, the structure of the first guard portion 32 can be simplified, so that the first guard portion 32 can form a protective barrier at the first side edge 11 and the second side edge 12 of the body 10. In addition, the plate-shaped structure has a good barrier performance, which can prevent objects from coming into contact with the cutting mechanism 20 through the first side edge 11 and the second side edge 12 of the body 10, thereby improving the safety of the lawn mower 100.

[0094] As shown in FIG7 , the second guard portion 33 is vertically connected to the mounting portion 31 at one end facing the body 10. The end of the second guard portion 33 facing away from the body 10 is located below the cutting mechanism 20. By positioning the end of the second guard portion 33 facing away from the body 10 below the cutting mechanism 20, the second guard portion 33 can form a protective barrier below the cutting mechanism 20.

[0095] It should be noted that, in the embodiment of the present application, the vertical direction refers to the thickness direction of the lawn mower, that is, the up and down direction in the figure. In the embodiment of the present application, the bottom refers to the direction closer to the grass in the vertical direction when the lawn mower is in use.

[0096] 5 and 6 , at least one grass inlet 34 is formed at at least one end of the second protection portion 33 in the forward direction of the lawn mower 100 .

[0097] By providing a grass inlet 34 at at least one end of the second guard portion 33 , when the lawn mower 100 is used to mow grass, the grass can pass through the grass inlet 34 and contact the cutting mechanism 20 , and then be cut by the cutting mechanism 20 , thereby achieving the purpose of mowing the grass.

[0098] In one possible implementation, the second protection portion 33 may include at least two strips 331 , each of which is mounted on the mounting portion 31 . The at least two strips 331 are spaced apart in the first direction. The gaps between adjacent strips 331 form the grass inlet 34 .

[0099] In this embodiment, each strip 331 is arranged along the forward direction of the lawn mower 100, that is, each strip 331 is parallel to the forward direction. All strips 331 are arranged parallel to each other, and the gaps between the strips 331 form the grass inlet 34. In other embodiments, the strips 331 may also be arranged at a certain angle to the forward direction of the lawn mower 100, which may be an angle of 10 to 40 degrees.

[0100] By configuring the second guard portion 33 as at least two strips 331, the structure of the second guard portion 33 can be simplified, making processing and installation easier and reducing costs. Furthermore, the strips 331 are spaced apart to directly form the grass inlet 34, eliminating the need for a specific grass inlet 34. This simplifies the structure of the second guard portion 33 and reduces costs.

[0101] Exemplarily, the second protective portion 33 may include 2, 3, 4, or 5 strip members 331, which can be specifically set according to the size of the cutting mechanism 20. In the embodiment of the present application, the number of strip members 331 in the second protective portion 33 is not further limited.

[0102] In the embodiment of the application, the strip 331 can be cylindrical. Of course, in other embodiments, the strip 331 can also be set to a prism or other shapes, etc. In the embodiment of the application, the specific shape of the strip 331 is not further limited.

[0103] By designing the strip 331 as a cylindrical shape, the difficulty of manufacturing the strip 331 can be reduced, thereby reducing costs. Furthermore, the cylindrical structure has a smooth surface without sharp corners or edges, preventing accidental scratches on the user and providing increased safety. It also makes it easier to enter the grass and is less likely to get stuck.

[0104] It should be noted that, in the embodiment of the present application, the spacing distance between two adjacent strip-shaped members 331 is not further limited in the embodiment of the present application. In addition, the sizes of the multiple strip-shaped members 331 can be the same or different.

[0105] As shown in FIG5 , the size of the strips 331 gradually increases from the outside to the inside of the cutting mechanism 20 , so that a plurality of strips 331 can be located outside the cutting mechanism 20 , thereby forming a protective barrier outside the cutting mechanism 20 .

[0106] Of course, in other embodiments, the plurality of strips 331 may be arranged to have the same length as the largest strip 331 in FIG5 , so that the plurality of strips 331 may be located outside the cutting mechanism 20. In the embodiment of the present application, the size of the strip 331 is not further limited in the embodiment of the present application.

[0107] 5 , in the second direction (Q direction), at least one end of each strip 331 is provided with a bent portion, which bends toward the mounting portion 31 . At least one bent portion on each strip 331 is connected to the mounting portion 31 .

[0108] The strip 331 is provided with a bent portion to connect the strip 331 to the mounting portion 31, thereby improving the connection stability between the second protective portion 33 and the mounting portion 31. In addition, the bent portion allows a portion of the strip 331 to be located below the cutting mechanism 20, while another portion of the strip 331 is connected to the mounting portion 31, so that the second protective portion 33 can form a protective barrier below the cutting mechanism 20.

[0109] For example, as shown in Figures 5 and 6, both ends of the strip 331 may be provided with a bent portion. The bent portion of each strip 331 is connected to the mounting portion 31. Between the two bent portions 3311 is an intermediate portion 3312. An accommodating area for accommodating part of the cutter disc 21 is formed between the strip 331, the mounting portion 31, and the first protective portion 32. In the direction from the outside to the inside of the cutting mechanism 20, the length of the intermediate portion 3312 gradually increases, so that the accommodating area also gradually increases in the direction from the outside to the inside of the cutting mechanism 20 to match the circular contour of the cutter disc 21. This prevents interference between the cutting mechanism 20 and the protective mechanism 30.

[0110] By providing bending portions at both ends of the strip 331 , the connection stability between the second protection portion 33 and the mounting portion 31 can be improved, thereby increasing the service life of the second protection portion 33 .

[0111] For example, the outer end portion of each bending portion 3311 is detachably mounted on the mounting portion 31 or formed integrally therewith, and the gaps between the bending portions 3311 at both ends of each strip-shaped member 331 are sufficient for grass to pass through, and there is no obstacle for grass to flow out on both sides.

[0112] In some other embodiments, as shown in Figure 8, a bending portion is provided at one end of the strip 331, wherein the end with the bending portion can be the end of the strip 331 facing the third side edge 13 of the fuselage 10, or the end of the strip 331 facing the fourth side edge 14 of the fuselage 10.

[0113] By providing a bent portion at one end of the strip 331 close to the third side edge 13 of the body 10 , the connection stability between the strip 331 and the mounting portion 31 can be improved.

[0114] By providing a bent portion at one end of each strip 331 close to the fourth side edge 14 of the body 10, the obstruction of the second protective portion 33 in the forward direction of the lawn mower 100 can be reduced, making it easier for grass to enter from the grass inlet 34 and contact with the cutting mechanism 20, thereby improving the efficiency of the lawn mower 100.

[0115] In other embodiments, some of the multiple strips 331 have a bent portion at one end facing the third side edge 13 of the body 10, while another portion of the multiple strips 331 have a bent portion at one end facing the fourth side edge 14 of the body 10. For example, the strips 331 with a bent portion at one end facing the third side edge 13 of the body 10 and the strips 331 with a bent portion at one end facing the fourth side edge 14 of the body 10 can be staggered. This also enlarges the grass inlet 34, reducing obstruction of the second guard 33 in the forward direction of the lawn mower 100, facilitating grass entry through the grass inlet 34 and contact with the cutting mechanism 20, thereby improving the efficiency of the lawn mower 100.

[0116] It should be noted that in the embodiment of the present application, the number and setting positions of the bending portions on each strip-shaped member 331 are not further limited.

[0117] It should be noted that, in the above-mentioned embodiment, the mounting portion 31 of the first protective mechanism 30a and the mounting portion 31 of the second protective mechanism 30b are separately provided. In other embodiments, as shown in FIG10 , the mounting portions 31 of the first protective mechanism 30a and the second protective mechanism 30b may also be provided as a whole. This can increase the position of the mounting portion 31 for connection with the fuselage 10, thereby improving the connection stability between the protective mechanism 30 and the fuselage 10.

[0118] Of course, in other embodiments, the protection mechanism 30 may also have other structures. For example, the protection mechanism 30 may be configured as an integrated structure, as shown in FIG11 , wherein the second protection portion 33 comprises a plate-like structure and is disposed at an end of the first protection portion 32 facing away from the body 10 , wherein the second protection portion 33 extends from the outer edge of the cutting mechanism 20 toward the center of the cutting mechanism 20 in the first direction.

[0119] Of course, in other embodiments, the protection mechanism 30 may also be configured as other structures, which will not be further explained in the embodiments of the present application.

[0120] The present application also provides a lawn mower 100 , as shown in FIG13 . The lawn mower 100 includes a body 10 having a first side edge 11 and a second side edge 12 arranged opposite to each other along a first direction. The first direction intersects with the forward direction of the lawn mower 100 .

[0121] For example, the first direction may be perpendicular to the forward direction of the lawn mower 100, or the first direction may be set at an angle to the forward direction of the lawn mower 100, for example, 85°, 86°, etc. In the embodiment of the present application, there is no further limitation on the angle between the first direction and the forward direction of the lawn mower 100.

[0122] By arranging the first direction perpendicular to the forward direction of the lawn mower 100, the safety of the lawn mower 100 can be improved. For example, if the two ends in the forward direction of the lawn mower 100 are the front and rear ends of the lawn mower 100, and the first direction is arranged perpendicular to the forward direction of the lawn mower 100, the first side edge 11 and the second side edge 12 of the body 10 will correspond to the left and right sides of the lawn mower 100. This provides a protective barrier on both the left and right sides of the lawn mower 100, thereby improving the safety of the lawn mower 100.

[0123] As shown in FIG. 13 , the lawn mower 100 may further include a cutting mechanism 20 , wherein the cutting mechanism 20 is located below the body 10 and is used to perform cutting operations.

[0124] For example, an output shaft (not shown in the figure) can be provided on the fuselage 10, and the output shaft is installed in cooperation with the cutting mechanism, wherein the output shaft is used to drive the cutting mechanism to rotate so that the cutting mechanism can perform a cutting operation.

[0125] For example, the rotation centerline of the cutting mechanism 20 coincides with the axis of the output shaft. A control device may be provided on the body 10 to drive the output shaft to rotate, which in turn drives the rotating structure to rotate so that the rotating structure can perform cutting operations.

[0126] In some embodiments, the control device may be a motor, etc. In the embodiments of the present application, the specific structure of the control device is not further limited.

[0127] In one possible implementation, in the first direction, the cutting mechanism 20 can be located in the middle of the body 10. By arranging the cutting mechanism 20 in the middle of the body 10, the distances from the cutting mechanism 20 to the first side edge 11 and the second side edge 12 can be the same. This allows the force applied to the first side edge 11 and the second side edge 12 of the body 10 to be symmetrical during operation, making it easier for the body 10 to maintain balance and less likely to tip over.

[0128] In an embodiment of the present application, in the first direction, the distance between the outer edge of the cutting mechanism 20 and the first side edge 11 of the fuselage 10 is a first distance H1, and the distance between the outer edge of the cutting mechanism 20 and the second side edge 12 of the fuselage 10 is a second distance H2. The first distance H1 and / or the second distance H2 is less than 50 mm.

[0129] By setting the first distance H1 and / or the second distance H2 to be less than 50 mm, the distance between the cutting mechanism 20 and the outside of the body 10 can be kept short, which is beneficial for the lawn mower 100 to be closer to the edge of the grass being cut, reducing the scope of manual trimming, and thus improving the automation of the intelligent lawn mower 100.

[0130] It should be noted that the first side edge 11 and the second side edge 12 of the body 10 refer to edge positions located on the outside of the body 10 in the first direction.

[0131] It should be noted that, in the embodiment of the present application, the lawn mower 100 may further include a driving wheel 40 and a driven wheel 50. The driving wheel 40 is mounted at the rear end of the body 10, and the driven wheel 50 is mounted at the front end of the body 10, or the driving wheel 40 may be mounted at the front end of the body 10, and the driven wheel 50 may be mounted at the rear end of the body 10.

[0132] As shown in FIG13 , two driving wheels 40 are mounted on the inner side of the rear end of the body 10. The driving wheels 40 are driven by the motor on the body 10, i.e., the lawn mower 100 is a rear-wheel drive lawn mower 100. A driven wheel 50 is mounted on the inner side of the front end of the body 10. The driven wheel 50 is preferably a universal wheel. The driving wheels 40 and the driven wheels 50 enable the lawn mower 100 to move and steer.

[0133] Exemplarily, the direction from the driving wheel 40 to the driven wheel 50 is the forward direction of the lawn mower 100 .

[0134] Exemplarily, the first distance H1 and the second distance H2 are equal, and the first distance H1 and the second distance H2 can both be 35mm, 36mm, 37mm, 38mm, 39mm, 40mm, 41mm, 42mm, 43mm, 44mm, 45mm, 46mm, 47mm, 48mm, 49mm, 50mm, etc.

[0135] In the embodiment of the present application, the specific values ​​of the first distance H1 and the second distance H2 are not further limited.

[0136] It should be noted that, for the convenience of description, the Q direction in the figure represents the forward direction of the lawn mower, that is, the second direction. The L direction in the figure refers to the direction toward the left end, left side or first side edge of the lawn mower. The R direction refers to the direction toward the right end, right side or second side edge of the lawn mower. The A direction refers to the direction toward the front end, front side or third side edge of the lawn mower. The B direction refers to the direction toward the rear end, rear side or fourth side edge of the lawn mower. The U direction refers to the top, and the D direction refers to the bottom. The vertical direction and the thickness direction of the lawn mower are both the directions of D and U in the figure.

[0137] By not providing the protection mechanism 30 between the third side edge 13 and the cutting mechanism 20 , the structure of the lawn mower 100 can be simplified, thereby reducing the cost.

[0138] It should be noted that when the fuselage 10 is a quadrilateral as shown in FIG13 , the first side edge 11 and the second side edge 12 are two opposing side edges. Specifically, in the embodiment of the present application, the first side edge 11 and the second side edge 12 are the outer edges of the left and right sides of the fuselage 10, respectively. The third side edge 13 and the fourth side edge 14 are two opposite side edges disposed at the front and rear ends of the fuselage 10, respectively. Specifically, in the embodiment of the present application, the third side edge 13 and the fourth side edge 14 are the outer edges of the front and rear ends of the fuselage 10, respectively.

[0139] In some embodiments, the number of the protection mechanisms 30 is two, wherein the two protection mechanisms 30 are oppositely arranged between the first side edge 11 of the fuselage 10 and the cutting mechanism 20 and between the second side edge 12 and the cutting mechanism 20 .

[0140] The specific structure of the cutting mechanism 20 is described in detail below.

[0141] FIG14 is a bottom view of a lawn mower 100 provided in an embodiment of the present application with the protection mechanism 30 removed.

[0142] As shown in FIG14 , the cutting mechanism 20 includes a cutter head 21 and a blade 22 mounted on the cutter head 21. The output shaft is mounted in conjunction with the cutter head 21 to drive the cutter head 21 to rotate. In this embodiment, the rotation centerline of the cutting mechanism 20 is the rotation centerline of the cutter head 21.

[0143] In this embodiment, there are three blades 22, and the three blades 22 are evenly mounted on the cutter disc 21 along the circumference of the cutter disc 21. One end of the blade 22, which is away from the center of the cutter disc 21, extends outside the cutter disc 21, so that the blade 22 can perform cutting operations.

[0144] In this embodiment, the blade 22 can be rotatably mounted to the cutter head 21 by means of screws, a rotating shaft, or other mounting members. That is, the blade 22 can rotate freely and also rotate as the cutter head 21 rotates. This allows the blade 22 to have a certain degree of freedom. When encountering obstacles such as pebbles, the force between the blade 22 and the obstacle can be reduced, effectively protecting the blade and preventing damage to the blade.

[0145] In one possible implementation, as shown in Figure 14 , in the first direction, the distance between the outer edge of the cutting mechanism 20 and the first side edge 11 of the fuselage 10 is a first distance H1, and the distance between the outer edge of the cutting mechanism 20 and the second side edge 12 of the fuselage 10 is a second distance H2. In the second direction, the distance between the outer edge of the cutting mechanism 20 and the third side edge 13 of the fuselage 10 is a third distance H3. The third distance H3 is greater than the first distance H1 and greater than the second distance H2. This ensures a greater distance between the cutting mechanism 20 and the third side edge 13 of the fuselage 10, thereby ensuring a higher level of safety at the third side edge 13 of the fuselage 10.

[0146] In one possible implementation, in the second direction (direction Q), the distance between the outer edge of the cutting mechanism 20 and the fourth side edge 14 of the fuselage 10 is a fourth distance H4. The fourth distance is greater than the first distance H1 and greater than the second distance H2. This ensures a greater distance between the cutting mechanism 20 and the fourth side edge 14 of the fuselage 10, thereby ensuring a higher safety performance at the fourth side edge 14 of the fuselage 10.

[0147] It should be noted that the outer edge of the cutting mechanism 20 is the outer edge at its maximum dimension, as shown in the dotted circle in Figure 14. For example, when the blade 22 rotates to face the third side edge 13 of the body 10, the third distance H3 is the distance from the end of the blade 22 facing away from the cutter disc 21 to the third side edge 13. When the blade 22 rotates to face the fourth side edge 14 of the body 10, the fourth distance H4 is the distance from the end of the blade 22 facing away from the cutter disc 21 to the fourth side edge 14.

[0148] It should be noted that the structure, principle and coordination with other components of the protective mechanism 30 in the embodiment of the present application are the same as those of the protective mechanism 30 described in Figures 5 to 12 above. For details, please refer to the description of the protective mechanism 30 in the above embodiment. In the embodiment of the present application, the structure of the protective mechanism 30 will not be repeated.

[0149] The present application also provides a lawn mower 100 , as shown in FIG5 , FIG6 , FIG12 , FIG13 , and FIG14 , the lawn mower 100 includes: a body 10 , the body 10 having an output shaft;

[0150] The cutting mechanism is located below the body 10 and is installed in conjunction with the output shaft. The cutting mechanism 20 includes a cutter disc 21 and a blade 22 installed on the cutter disc 21.

[0151] a protection mechanism 30 , at least a portion of which is located below the cutting mechanism 20 ;

[0152] The protection mechanism 30 includes at least two spaced-apart strips 331 , each strip 331 including a middle portion 3312 . The cutter disc 21 is located above the middle portion 3312 . The length of the middle portion 3312 gradually increases from the outside to the inside of the cutting mechanism 20 .

[0153] The present application configures the guard mechanism 30 to include at least two strips 331. These two strips 331 simplify the structure of the guard mechanism 30, facilitate processing and installation, and thus reduce costs. Furthermore, the strips 331 are spaced apart, and the gaps between the strips 331 directly form a grass inlet, eliminating the need for a specific grass inlet. This simplifies the structure of the guard mechanism 30 and reduces the cost of the lawn mower 100.

[0154] In the direction from the inside to the outside of the cutting mechanism 20, the length of the middle part 3312 gradually increases, so that the accommodating area of ​​the cutting mechanism 20 also gradually increases in the direction from the inside to the outside of the cutting mechanism 20 to match the circular contour of the cutter disc 21 and prevent interference between the cutting mechanism 20 and the protective mechanism 30.

[0155] By providing strips 331 at intervals at the bottom of the cutting mechanism 20 as a guard mechanism, the strips 331 can more effectively prevent grass from getting stuck at the bottom of the guard mechanism 30, compared to other guard structures, such as trough-type structures. Furthermore, using strips 331 as the guard mechanism 30 reduces its overall weight. When the guard mechanism 30 moves up and down or left and right with the cutting mechanism 20, the lighter the guard mechanism 30, the smaller the corresponding drive load on the drive motor. This allows more energy from the lawn mower 100's battery pack to be distributed to the cutting mechanism 20 and the travel mechanism, thereby improving the mowing efficiency of the lawn mower 100.

[0156] In addition, the strip 331 also acts as a reinforcing rib, which can increase the stability of the protective mechanism 30 (for example, when the strip 331 is connected to the first protective part 32, the strip 331 can reinforce the structure of the first protective part 32 and increase the stability of the structure of the first protective part 32), so that the protective mechanism 30 will not be deformed when it touches an obstacle, thereby providing better protection for the cutting mechanism 20.

[0157] In addition, the strip 331 provides a better gripping position for the user when carrying the lawn mower 100. When the lawn mower 100 is in a stopped state for transportation, the user can hold the strip 331 and then carry the lawn mower 100, thereby improving the stability of the lawn mower 100 during transportation and avoiding the problem of the lawn mower 100 falling during transportation.

[0158] In a possible implementation, only two strip members 331 are provided in the protection mechanism 30 , and the middle portions 3312 of the two strip members 331 are arranged in parallel.

[0159] The fewer the strips 331, the lighter the overall weight of the guard mechanism 30. When there is only one strip 331, the bottom protection of the cutting mechanism 20 is poor, affecting the safety of the lawn mower 100. When there are two strips 331, the safety of the cutting mechanism 20 has been verified to meet safety regulations. Furthermore, compared to when there are three or more strips 331, the guard mechanism 30 is lighter overall, requiring less energy to operate.

[0160] In one possible implementation, the cutter disc 21 is circular, the plane where the outer circumference of the cutter disc 21 lies is a first plane, and the orthographic projection of the innermost middle portion 3312 on the first plane at least partially overlaps with the cutter disc 21 .

[0161] The orthographic projection of the middle portion 3312 on the first plane at least partially overlaps with the cutter disc 21. When there are obstacles hidden in the grass, the middle portion 3312 can block most of the obstacles from direct contact with the cutter disc 21, avoiding damage to the cutter disc 21 caused by touching the obstacles and improving the service life of the cutter disc 21.

[0162] In one possible implementation, the orthographic projection of the outermost middle portion 3312 on the first plane does not coincide with the cutter head 21 .

[0163] The orthographic projection of the outermost middle portion 3312 on the first plane does not overlap with the cutter disc 21 , so that the outer periphery of the cutter disc 21 is between the innermost middle portion 3312 and the outermost middle portion 3312 , ensuring the protective effect of the strip member 331 on the cutter disc 21 .

[0164] In one possible implementation, two protective mechanisms 30 are provided, the distance between the two longest middle portions 3312 of the two protective mechanisms 30 is a first distance, the distance between the outermost middle portion 3312 and the innermost middle portion 3312 of each protective mechanism 30 is a second distance, and the first distance is greater than the second distance.

[0165] In one possible implementation, the two protection mechanisms 30 are symmetrically arranged along the central axis of the fuselage 10 in the longitudinal direction.

[0166] The two protection mechanisms 30 both adopt the protection form of the strip-shaped member 331, which can further reduce the overall weight of the protection mechanism 30 and reduce the energy consumption required for the movement of the protection mechanism 30.

[0167] In a possible implementation, the strip further includes a bending portion 3313 , and the bending portion 3313 is respectively provided at both ends of the middle portion 3312 .

[0168] The bent portion 3313 is used to connect with other structures in the protective mechanism 30 , and the fixed installation of the strip member 331 can be achieved without using additional connecting structures, which simplifies the installation steps and reduces the installation cost.

[0169] In one possible implementation, the length of the bent portion 3313 is smaller than the length of the middle portion 3312 .

[0170] The length of the bent portion 3313 is shorter than that of the middle portion 3312 , which can improve the installation stability of the strip member 331 and prevent the strip member 331 from being deformed during operation of the lawn mower 100 .

[0171] In one possible implementation, the strip 331 is parallel to the forward direction of the lawn mower 100 .

[0172] The strip 331 is arranged to be parallel to the forward direction of the lawn mower 100 , which can avoid the strip 331 from pressing the grass and getting stuck to the groove to the greatest extent, thereby improving the mowing efficiency.

[0173] In one possible implementation, the cross section of the strip 331 is circular.

[0174] Setting the cross section of the strip 331 to be circular can reduce the friction between the strip 331 and the lawn, and reduce the probability of the protective mechanism 30 getting stuck in the grass. In addition, setting the strip 331 to be circular can prevent the sharp corners of the strip 331 from causing pressure on the user's hands when the user holds the strip to carry the machine.

[0175] In one possible implementation, the blade 22 is located between the cutter head 21 and the middle portion.

[0176] In one possible implementation, the end of the middle portion 3312 close to the front end of the lawn mower 100 is the first end, the end of the middle portion 3312 close to the rear end of the lawn mower 100 is the second end, the first end of the innermost middle portion 3312 is closer to the front end of the lawn mower 100 relative to the first end of the outermost middle portion 3312, and the second end of the innermost middle portion 3312 is closer to the rear end of the lawn mower 100 relative to the second end of the outermost middle portion 3312.

[0177] In one possible implementation, the body 10 has a first side edge 11 and a second side edge 12 arranged opposite to each other along a first direction, where the first direction intersects with a forward direction of the lawn mower 100 ;

[0178] The body 10 has a third side edge 13 and a fourth side edge 15 arranged opposite to each other along a second direction, and the second direction is a forward direction of the lawn mower 10;

[0179] In the first direction, the distance between the outer edge of the cutting mechanism 20 and the first side edge 11 of the fuselage 10 is a first distance, and the distance between the outer edge of the cutting mechanism 20 and the second side edge 12 of the fuselage is a second distance;

[0180] In the second direction, the distance between the outer edge of the cutting mechanism 20 and the fourth side edge 15 of the body is a fourth distance, and the fourth side edge 14 is the outer side of the rear side of the lawn mower 100;

[0181] The fourth distance is greater than the first distance and greater than the second distance.

[0182] The fourth distance is greater than the first distance and greater than the second distance, which can ensure that the distance between the cutting mechanism 20 and the fourth edge 14 of the fuselage 10 is larger, thereby ensuring higher safety performance at the fourth edge 14 of the fuselage 10.

[0183] In one possible implementation, the body 10 has a first side edge 11 and a second side edge 12 arranged opposite to each other along a first direction, where the first direction intersects with a forward direction of the lawn mower 100 ;

[0184] The protection mechanism 30 further includes a first protection portion 32 , which is disposed between the cutter disc 21 and the first side edge 11 and / or between the cutter disc 21 and the second side edge 12 .

[0185] In a possible implementation, along the forward direction of the lawn mower 100 , the length of the first guard portion 32 is greater than the length of the middle portion 3312 .

[0186] Setting the length of the first protection portion 32 to be greater than the length of the middle portion 3312 can enhance the protection effect of the first side edge 11 and the second side edge 12 of the lawn mower 100 , thereby improving the safety performance of the lawn mower 100 .

[0187] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0188] In the description of this application, it should be understood that the terms "including" and "having" and any variations thereof used herein are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or are inherent to these processes, methods, products or apparatuses.

[0189] Unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," "fixed," etc. should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integration. They can be directly connected or indirectly connected through an intermediate medium. They can also refer to internal connections between two elements or interactions between two elements. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances. In addition, the terms "first," "second," etc. are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated.

[0190] 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 them. 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 or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A lawn mower, characterized in that: include: a fuselage having an output shaft; A cutting mechanism, the cutting mechanism is located below the body and is installed in cooperation with the output shaft, the cutting mechanism comprising a cutter disc and a blade installed on the cutter disc; a protection mechanism, at least a portion of which is located below the cutting mechanism; The protection mechanism comprises at least two spaced-apart strips, wherein the strips comprise a middle portion, the cutter disc is located above the middle portion, and the length of the middle portion gradually increases in a direction from the outside to the inside of the cutting mechanism.

2. The lawn mower according to claim 1, characterized in that There are only two strip-shaped members in the protection mechanism, and the middle parts of the two strip-shaped members are arranged in parallel.

3. The lawn mower according to claim 1, characterized in that: The cutter disc is circular, the plane where the outer circumference of the cutter disc is located is a first plane, and the orthographic projection of the innermost middle portion on the first plane at least partially overlaps with the cutter disc.

4. The lawn mower according to claim 3, characterized in that The orthographic projection of the outermost middle portion on the first plane does not overlap with the cutter disc.

5. The lawn mower according to claim 1, characterized in that There are two protective mechanisms, the distance between the two longest middle parts of the two protective mechanisms is a first distance, the distance between the outermost middle part and the innermost middle part of each protective mechanism is a second distance, and the first distance is greater than the second distance.

6. The lawn mower according to claim 5, characterized in that The two protection mechanisms are symmetrically arranged along the central axis in the length direction of the fuselage.

7. The lawn mower according to claim 1, characterized in that: The strip-shaped member further comprises a bending portion, and the bending portions are respectively arranged at two ends of the middle portion.

8. The lawn mower according to claim 1, characterized in that The length of the bent portion is smaller than the length of the middle portion.

9. The lawn mower according to claim 1, characterized in that The strip is parallel to the advancing direction of the lawn mower.

10. The lawn mower according to claim 1, characterized in that The cross section of the strip is circular.

11. The lawn mower according to claim 1, characterized in that The blade is located between the blade disc and the middle portion.

12. The lawn mower according to claim 1, characterized in that The end of the middle portion close to the front end of the lawn mower is a first end, and the end of the middle portion close to the rear end of the lawn mower is a second end. The first end of the innermost middle portion is closer to the front end of the lawn mower than the first end of the outermost middle portion, and the second end of the innermost middle portion is closer to the rear end of the lawn mower than the second end of the outermost middle portion.

13. The lawn mower according to claim 1, characterized in that The body has a first side edge and a second side edge disposed opposite to each other along a first direction, the first direction intersecting with a forward direction of the lawn mower; The body has a third side edge and a fourth side edge arranged opposite to each other along a second direction, wherein the second direction is a forward direction of the lawn mower; In the first direction, the distance between the outer edge of the cutting mechanism and the first side edge of the fuselage is a first distance, and the distance between the outer edge of the cutting mechanism and the second side edge of the fuselage is a second distance; In the second direction, the distance between the outer edge of the cutting mechanism and the fourth side edge of the body is a fourth distance, and the fourth side edge is the outer side of the rear side of the lawn mower; The fourth distance is greater than the first distance, and greater than the second distance.

14. The lawn mower according to claim 1, characterized in that The body has a first side edge and a second side edge disposed opposite to each other along a first direction, the first direction intersecting with a forward direction of the lawn mower; The protection mechanism further includes a first protection portion, and the first protection portion is arranged between the cutter disc and the first side edge and / or between the cutter disc and the second side edge.

15. The lawn mower according to claim 14, characterized in that Along the forward direction of the lawn mower, the length of the first guard portion is greater than the length of the middle portion.

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