Cutting mechanism and cutting apparatus

Abstract

The application relates to the field of mowing robots, and provides a cutting mechanism and a cutting device, which comprise a protection assembly, a cutting assembly and a driving assembly. The protection assembly has at least one guide groove. The guide groove extends from the outer periphery of the protection assembly to the side where the center of the protection assembly is located. The cutting assembly is arranged in the protection range of the protection assembly, and the driving assembly is used for driving the protection assembly to rotate, so that the grass located outside the main body of the robot body continuously enters the guide groove. The driving assembly is also used for driving the cutting assembly to rotate, so that the grass entering the guide groove is cut by the rotating cutting assembly, so that the grass located outside the main body of the robot body is trimmed, and a mowing blind area is avoided, and the mowing effect is improved.

Description

Technical Field

[0001] The present application relates to the field of robotics technology, and in particular to a cutting mechanism and cutting equipment. Background Art

[0002] To maintain a safe distance, typical robotic lawn mowers often leave a certain distance between the mowing components at the bottom of the machine and the outside of the machine. This often leaves grass near walls, fences, and other areas unreachable, leaving a blind spot. To clear this blind spot, manual labor using separate tools is often required. Therefore, a cutting device that can clean grass near walls, fences, and other areas, avoiding this blind spot and improving mowing efficiency, has become a technical challenge. Summary of the Invention

[0003] The present application provides a cutting mechanism and cutting equipment that reduce mowing blind areas and improve mowing efficiency.

[0004] In a first aspect, the present application provides a cutting mechanism comprising:

[0005] A protection component, the protection component having at least one introduction groove, the introduction groove extending from the outer periphery of the protection component toward the center of the protection component;

[0006] a cutting assembly, the cutting assembly being disposed within a protection range of the protection assembly, the introduction groove being at least partially located within the cutting range of the cutting assembly;

[0007] A driving assembly, wherein the driving assembly is connected to the protection assembly and is used to drive the protection assembly to rotate; the driving assembly is also connected to the cutting assembly and is also used to drive the cutting assembly to rotate.

[0008] The present application designs a cutting mechanism including a protection component, a cutting component and a driving component. The protection component has at least one introduction slot. The introduction slot extends from the outer periphery of the protection component toward the side where the center of the protection component is located, so that the grass can follow the introduction slot into a position close to the central area of ​​the protection component. The cutting component is arranged in the protection range of the protection component, and the driving component is used to drive the protection component to rotate so that the grass located on the outside of the fuselage body continuously follows the introduction slot into a position close to the central area of ​​the protection component. The driving component is also used to drive the cutting component to rotate so that the grass entering the introduction slot is cut by the cutting component, so as to trim the grass located on the outside of the fuselage body, thereby avoiding leaving a blind spot for mowing and improving the mowing effect.

[0009] In a second aspect, the present application provides a cutting mechanism, comprising:

[0010] The protection assembly comprises a center disc and a plurality of extension units surrounding the outer periphery of the center disc, and the guide-in slot is formed between two adjacent extension units; the extension direction of each extension unit intersects with the radial direction of the center disc;

[0011] The cutting assembly is arranged in the protection range of the protection assembly, and the guide-in slot is at least partially located in the cutting range of the cutting assembly; and

[0012] The driving assembly is connected to the cutting assembly, and the driving assembly is used to drive the cutting assembly to rotate.

[0013] The cutting mechanism comprises a protection assembly, a cutting assembly and a driving assembly. The protection assembly comprises a center disc and a plurality of extension units surrounding the outer periphery of the center disc, and the guide-in slot is formed between two adjacent extension units; so that the grass can enter the cutting range of the cutting assembly along the guide-in slot. The extension direction of each extension unit intersects with the radial direction of the center disc; the cutting assembly is arranged in the protection range of the protection assembly, and the guide-in slot is at least partially located in the cutting range of the cutting assembly; the driving assembly is connected to the cutting assembly, and the driving assembly is used to drive the cutting assembly to rotate, so that the grass entering the guide-in slot is cut by the rotating cutting assembly, to realize the edge cutting of the grass located outside the main body of the self-moving device, thereby avoiding leaving a blind area of cutting and improving the cutting effect.

[0014] In a third aspect, the cutting mechanism provided by the present application is applied to a self-moving device, and comprises:

[0015] The protection assembly has at least one guide-in slot, and the guide-in slot extends from the outer periphery of the protection assembly to the side where the center of the protection assembly is located;

[0016] The cutting assembly is arranged in the protection range of the protection assembly, and the guide-in slot is at least partially located in the cutting range of the cutting assembly;

[0017] A part of the guide-in slot is located in the cutting range of the cutting assembly; and at least a part of the guide-in slot on the protection assembly is located outside the orthographic projection area of the self-moving device;

[0018] The connecting assembly is used to connect the cutting mechanism and the self-moving device, and is used to drive the cutting assembly to rotate to avoid obstacles when the self-moving device travels and encounters obstacles.

[0019] The cutting mechanism provided by the application comprises a protection assembly, a cutting assembly and a connecting assembly. The protection assembly has at least one lead-in groove. The lead-in groove extends from the outer periphery of the protection assembly to the side where the center of the protection assembly is located. The cutting assembly is arranged in the protection range of the protection assembly. At least part of the lead-in groove is located in the cutting range of the cutting assembly. Part of the lead-in groove is located in the cutting range of the cutting assembly. At least part of the lead-in groove on the protection assembly is located outside the orthographic projection area of the self-moving device. The connecting assembly is used to connect the cutting mechanism and the self-moving device. The connecting assembly is used to drive the cutting assembly to rotate to avoid obstacles when the self-moving device travels and encounters obstacles. Not only can the cutting mechanism of the self-moving device mow and trim, but also can automatically overcome obstacles during the process of mowing and trimming by the cutting mechanism, avoid hard collision between the cutting mechanism and obstacles, and further cause physical damage of the trimming cutting mechanism or the self-moving device cannot move forward, thereby improving the obstacle overcoming ability and intelligence of the self-moving device.

[0020] In a fourth aspect, the application provides a cutting mechanism, comprising:

[0021] The protection assembly comprises a first center disc and a plurality of first extension units arranged around the outer periphery of the first center disc. At least part of the lead-in groove is formed between two adjacent first extension units. The lead-in groove extends from the outer periphery of the protection assembly to the side where the center of the protection assembly is located.

[0022] The cutting assembly is arranged in the protection range of the protection assembly, and at least part of the lead-in groove is located in the cutting range of the cutting assembly.

[0023] The first driving assembly is connected to the cutting assembly, and is used to drive the cutting assembly to rotate.

[0024] The second driving assembly is connected to the protection assembly, and is used to drive the protection assembly to rotate.

[0025] The application designs a cutting mechanism including a protection assembly, a cutting assembly, a first driving assembly and a second driving assembly. The protection assembly includes a first center disc and a plurality of first extension units surrounding the outer periphery of the first center disc. At least part of an introduction groove is formed between two adjacent first extension units. The introduction groove extends from the outer periphery of the protection assembly to the side where the center of the protection assembly is located, so as to roll the grass on the outer periphery into the introduction groove during the rotation of the protection assembly. The cutting assembly is arranged within the protection range of the protection assembly to avoid exposure. At least part of the introduction groove is located within the cutting range of the cutting assembly, so that the grass entering the introduction groove can enter the cutting range of the cutting assembly and be cut by the cutting assembly. The second driving assembly is connected to the protection assembly and is used to drive the rotation of the protection assembly. During the rotation of the protection assembly, the grass on the outer side of the main body is continuously rolled along the introduction groove into the cutting range close to the cutting assembly. The first driving assembly is connected to the cutting assembly and is used to drive the rotation of the cutting assembly. When the grass is continuously rolled along the introduction groove into the cutting range close to the cutting assembly and is rotated and cut by the cutting assembly, the grass on the outer side of the main body is trimmed, thereby avoiding leaving a blind area of mowing and improving the mowing effect.

[0026] In a fifth aspect, the application provides a cutting mechanism, which includes:

[0027] a protection assembly including a first center disc and a plurality of first extension units surrounding the outer periphery of the first center disc. At least part of an introduction groove is formed between two adjacent first extension units. The introduction groove extends from the outer periphery of the protection assembly to the side where the center of the protection assembly is located.

[0028] a cutting assembly arranged within the protection range of the protection assembly. Part of the introduction groove is located within the cutting range of the cutting assembly.

[0029] a driving assembly connected to the protection assembly and the cutting assembly. The driving assembly is used to drive the rotation of the protection assembly and the cutting assembly.

[0030] The application designs a cutting mechanism including a protection assembly, a cutting assembly and a driving assembly. The protection assembly includes a first center disc and a plurality of first extension units surrounding the outer periphery of the first center disc. At least part of an introduction groove is formed between two adjacent first extension units. The introduction groove extends from the outer periphery of the protection assembly to the side where the center of the protection assembly is located, so as to roll the grass on the side of the protection assembly into the introduction groove during the rotation of the protection assembly. The cutting assembly is arranged in the protection range of the protection assembly, so as to avoid the exposure of the cutting assembly. At least part of the introduction groove is located in the cutting range of the cutting assembly, so as to enable the grass entering the introduction groove to enter the cutting range of the cutting assembly and be cut by the cutting assembly. The driving assembly is connected to the protection assembly and is used to drive the rotation of the protection assembly. During the rotation of the protection assembly, the grass on the outer side of the main body of the machine is continuously rolled along the introduction groove into the cutting range close to the cutting assembly. The driving assembly is also connected to the cutting assembly and is used to drive the rotation of the cutting assembly. During the continuous rolling of the grass along the introduction groove into the cutting range close to the cutting assembly and the rotation cutting of the cutting assembly, the grass on the outer side of the main body of the machine is trimmed, so as to avoid leaving a blind area of mowing and improve the mowing effect.

[0031] In a sixth aspect, the application provides a cutting device, which includes a main body of the machine and at least one cutting mechanism according to the first aspect, the second aspect, the third aspect, the fourth aspect or the fifth aspect. The cutting mechanism is arranged on the main body of the machine. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the application, the drawings needed in the embodiments will be briefly introduced as follows.

[0033] Figure 1 is a schematic diagram of the perspective structure of a cutting device provided by the embodiments of the application;

[0034] Figure 2 is a schematic diagram of the top of a cutting device provided by the embodiments of the application;

[0035] Figure 3 is a schematic diagram of the bottom of a cutting device provided by the embodiments of the application;

[0036] Figure 4 is a schematic diagram of the rear end of a cutting device provided by the embodiments of the application;

[0037] Figure 5 is a schematic diagram of the side view of a cutting device provided by the embodiments of the application;

[0038] Figure 6 is Figure 5 is a schematic diagram of the cross section along the direction A-A in the above figure;

[0039] Figure 7 is a perspective view of a cutting mechanism provided by an embodiment of the present application Figure 1 ;

[0040] Figure 8 is a perspective exploded view of a cutting mechanism provided by an embodiment of the present application Figure 1 ;

[0041] Figure 9 is a sectional view of a cutting mechanism provided by an embodiment of the present application

[0042] Figure 10 is a top view of a protection assembly and a cutting assembly provided by an embodiment of the present application

[0043] Figure 11 is an exploded view of a protection assembly and a cutting assembly provided by an embodiment of the present application Figure 1 ;

[0044] Figure 12 is a sectional view of a protection assembly and a cutting assembly provided by an embodiment of the present application

[0045] Figure 13 is a perspective exploded view of a cutting mechanism provided by an embodiment of the present application Figure 2 ;

[0046] Figure 14 is an exploded view of a protection assembly and a cutting assembly provided by an embodiment of the present application

[0047] Figure 15 is an exploded view of a protection assembly and a cutting assembly provided by an embodiment of the present application

[0048] Figure 16 is a top view of a protection assembly provided by an embodiment of the present application

[0049] Figure 17 is Figure 16 a sectional view in the direction of B-B provided by an embodiment of the present application

[0050] Figure 18 is an exploded structural perspective view of a cutting device provided by an embodiment of the present application

[0051] Figure 19 is an exploded structural top view of a cutting device provided by an embodiment of the present application

[0052] Figure 20 is a perspective view of a cutting mechanism and a connecting assembly provided by an embodiment of the present application

[0053] Figure 21 is Figure 20A cutting mechanism and a connecting assembly are provided.

[0054] Figure 22 A cutting mechanism and a connecting assembly are provided. Figure 20 A cutting mechanism and a connecting assembly are provided. Figure 1 ;

[0055] Figure 23 A cutting mechanism and a connecting assembly are provided. Figure 20 A cutting mechanism and a connecting assembly are provided. Figure 1 ;

[0056] Figure 24 A cutting mechanism and a connecting assembly are provided. Figure 20 A cutting mechanism and a connecting assembly are provided. Figure 2 ;

[0057] Figure 25 A cutting mechanism and a connecting assembly are provided. Figure 20 A cutting mechanism and a connecting assembly are provided.

[0058] Figure 26 A cutting mechanism and a connecting assembly are provided. Figure 25 A cutting mechanism and a connecting assembly are provided.

[0059] Figure 27 A cutting mechanism and a connecting assembly are provided. Figure 2 ;

[0060] Figure 28 A cutting mechanism and a connecting assembly are provided. Figure 3 ;

[0061] Figure 29 A cutting mechanism and a connecting assembly are provided. Figure 20 A cutting mechanism and a connecting assembly are provided. Figure 2 ;

[0062] Figure 30 A cutting mechanism and a connecting assembly are provided.

[0063] Figure 31 A cutting mechanism and a connecting assembly are provided.

[0064] Figure 32 A cutting mechanism and a connecting assembly are provided.

[0065] Figure 33 A cutting mechanism and a connecting assembly are provided.

[0066] Figure 34 A cutting mechanism and a connecting assembly are provided.

[0067] Figure 35 Figure 1 is a bottom view of a protection assembly, a cutting assembly, and a driving assembly according to an embodiment of the present application.

[0068] BRIEF DESCRIPTION OF THE DRAWINGS

[0069] Cutting device 1000; body main body 100; cutting mechanism 200; connecting assembly 800;

[0070] Connecting support 210; support main body 211; first support arm 212; second support arm 213;

[0071] Transmission assembly 220; first gear 221; second through hole 222;

[0072] Driving gear 224;

[0073] First transmission gear 225;

[0074] Housing shell 230; first cylinder body 231; second cylinder body 232; first assembly ring 233; second assembly ring 234;

[0075] First bearing 235; second bearing 236;

[0076] Front wheel assembly 310;

[0077] Rear wheel assembly 320;

[0078] Mowing component 330;

[0079] Protection assembly 400;

[0080] Leading-in groove 410;

[0081] Open end 411; closed end 412; first sub-leading-in groove 413; second sub-leading-in groove 414;

[0082] Center disc 420; first center disc 421; second center disc 422; first through hole 423; third through hole 424; gear ring 425;

[0083] Extension unit 430;

[0084] Connecting end 431; extension end 432;

[0085] First extension unit 433; second extension unit 434;

[0086] Accommodating cavity 440;

[0087] First cover body 451; second cover body 452;

[0088] Cutting assembly 500;

[0089] Blade 510; Blade shaft 520; Blade edge 530;

[0090] Drive assembly 600;

[0091] First drive assembly 610; First motor 611;

[0092] Second drive assembly 620; Second motor 621; Second gear 622;

[0093] Connecting bearing 710; First shaft ring 711; Second shaft ring 712;

[0094] Rotating shaft assembly 810; Rotating shaft 811; Rotating shaft connector 812; Body part 813; Hook part 814; First torsion arm 815; First spiral arm 816; Intermediate connecting arm 817; Second spiral arm 818; Second torsion arm 819;

[0095] Elastic return assembly 820; Buffer seat 821; Rotating shaft elastic member 822; First abutting part 823. DETAILED DESCRIPTION

[0096] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the embodiments described in the present application are only part of the embodiments, rather than all the embodiments. Based on the embodiments provided in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the protection scope of the present application.

[0097] In the present application, the phrase "embodiment" means that the specific features, structures or characteristics described in conjunction with the embodiment can be included in at least one embodiment of the present application. The appearance of this phrase at various places in the specification does not necessarily mean the same embodiment, nor is it an independent or alternative embodiment to other embodiments. Those skilled in the art can understand explicitly and implicitly that the embodiments described in the present application can be combined with other embodiments.

[0098] The terms "first", "second", and the like in the description and in the claims of the present application and above-described drawings are used to distinguish different objects, rather than to describe a particular sequential order. In addition, the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a component or device that includes one or more components does not limit to the listed one or more components, but optionally also includes other components not listed, but inherent to the product described by the specification, or one or more components that are required based on the described function. Generally, automatic mowing robots often leave a certain safety distance between the mowing components at the bottom of the machine and the periphery of the machine to ensure safety protection distance. Thus, the grass near the walls, fences and other positions is often not cut, leaving a mowing blind area. In order to clean this mowing blind area that cannot be cleaned by the mowing robot, manual cleaning of this missed area with a separate tool is often required. Based on this, how to provide a cutting device that can clean the grass near the walls, fences and other positions, avoid leaving a mowing blind area, and improve the mowing effect, becomes a technical problem to be solved.

[0099] Referring to Figure 1 , the present application provides a cutting device 1000. The cutting device 1000 is used for garden lawn trimming, including but not limited to automatic mowing robots and the like.

[0100] Referring to Figures 1-4 , the cutting device 1000 includes a body 100 and at least one cutting mechanism 200.

[0101] The body 100 includes a front end and a rear end along a travel direction. The body 100 also includes a first side and a second side along a width direction. The travel direction is the length direction. The width direction is the X direction in Figure 1 , the length direction is the Y direction in Figure 1 , and the height direction is the Z direction in Figure 1 .

[0102] Optionally, referring to Figures 1-4 , the cutting device 1000 further includes a pair of front wheel assemblies 310 and a pair of rear wheel assemblies 320. The pair of front wheel assemblies 310 are symmetrically arranged at positions close to the front end of the first side of the body 100 and the second side of the body 100. The pair of rear wheel assemblies 320 are symmetrically arranged at positions close to the rear end of the first side of the body 100 and the second side of the body 100. The pair of front wheel assemblies 310 and the pair of rear wheel assemblies 320 are used to drive the body 100 to move.

[0103] The cutting mechanism 200 is arranged on the body 100. The number of cutting mechanisms 200 is one or more.

[0104] Optionally, when the number of cutting mechanisms 200 is one, the cutting mechanism 200 can be located on the first side of the body main part 100.

[0105] Optionally, when the number of cutting mechanisms 200 is one, the cutting mechanism 200 can be located on the second side of the body main part 100.

[0106] Optionally, when the number of cutting mechanisms 200 is two, the two cutting mechanisms 200 are respectively located on the first side and the second side of the body main part 100.

[0107] In the length direction, the cutting mechanism 200 is located between the front wheel assembly 310 and the rear wheel assembly 320.

[0108] Please refer to Figure 2 , Figure 5 and Figure 6 , the cutting mechanism 200 extends out of the body main part 100, and the cutting mechanism 200 is used for edging. Specifically, the cutting range of the cutting mechanism 200 is at least partially located in the area outside the vertical projection area of the body main part 100 along the height direction. As the cutting device 1000 moves forward, the cutting path of the cutting mechanism 200 can pass through the area outside the body main part 100, and the grass M1 outside the body main part 100 is mowed and edged to clean the weeds at the junction of the lawn and the hard road surface, wall M2, avoid leaving a blind area of mowing, and improve the mowing effect.

[0109] Optionally, please refer to Figure 3 , the cutting device 1000 further comprises at least one mowing component 330, and the at least one mowing component 330 is arranged at the bottom of the body main part 100 and is used for mowing the area passed by the body main part 100. The number of mowing components 330 is one or more. For example, the number of mowing components 330 is two. The two mowing components 330 are arranged at the bottom of the body main part 100 along the width direction.

[0110] The difference between the mowing component 330 and the aforementioned cutting mechanism 200 is that the mowing component 330 is used for mowing at the bottom of the body main part 100, and the cutting mechanism 200 is used for extending out of the side of the body main part 100 for edging.

[0111] Of course, in other embodiments, the cutting device 1000 does not comprise the mowing component 330.

[0112] Of course, in other embodiments, the cutting device 1000 does not include the mowing component 330. The cutting mechanism 200 is movable in position, for example, the cutting mechanism 200 can be located at the bottom of the body 100 to mow at the bottom of the body 100; when it is necessary to trim the edges, the cutting mechanism 200 can be moved to the side of the body 100 to trim the edges.

[0113] The structure of the cutting mechanism 200 provided by the first embodiment of the present application is described below with reference to the accompanying drawings.

[0114] Referring to Figures 7-9 , the cutting mechanism 200 includes a protection assembly 400, a cutting assembly 500, and a driving assembly 600.

[0115] Referring to Figures 10-12 , the protection assembly 400 has at least one guide slot 410. Specifically, the number of guide slots 410 is one or more. In this embodiment, the number of guide slots 410 is taken as an example.

[0116] Optionally, at least part of the guide slot 410 is located outside the orthographic projection area of the body 100, so that the grass outside the body 100 can enter the guide slot 410.

[0117] The guide slot 410 extends from the outer periphery of the protection assembly 400 to the side where the center of the protection assembly 400 is located, so that the grass outside the body 100 can enter the cutting range close to the cutting assembly 500 along the guide slot 410.

[0118] Further optionally, referring to Figure 2 and Figure 10 , the extension direction of each guide slot 410 is inclined compared to the travel direction, so as to facilitate the entry of the grass outside along the guide slot 410 to the position close to the center of the protection assembly 400 as the cutting device 1000 advances and the protection assembly 400 rotates.

[0119] In the first optional embodiment, the number of cutting mechanisms 200 is one, and a plurality of guide slots 410 are arranged in a clockwise direction around the center of the protection assembly 400.

[0120] For example, when the cutting mechanism 200 is located on the left side of the body 100, a plurality of guide slots 410 are arranged in an anticlockwise direction around the center of the protection assembly 400.

[0121] As the cutting device 1000 advances and the protection assembly 400 rotates clockwise, the grass on the left side of the body 100 enters the guide slot 410 as the protection assembly 400 rotates, and as the protection assembly 400 rotates, the grass can enter a deeper position in the guide slot 410 and cannot come out of the slot of the guide slot 410. The grass is squeezed and restrained in the guide slot 410, thereby preparing for the subsequent cutting assembly 500 to cut the grass.

[0122] In a second alternative embodiment, referring to Figure 2 and Figure 10 , the number of cutting mechanisms 200 is one, and a plurality of guide slots 410 are arranged around the center of the protection assembly 400 in a counterclockwise direction.

[0123] For example, when the cutting mechanism 200 is located on the right side of the body 100, a plurality of guide slots 410 are arranged around the center of the protection assembly 400 in a counterclockwise direction. Further, the rotation direction of the protection assembly 400 is also counterclockwise.

[0124] As the cutting device 1000 advances and the protection assembly 400 rotates counterclockwise, the grass on the right side of the body 100 enters the guide slot 410 as the protection assembly 400 rotates, and as the protection assembly 400 rotates, the grass can enter a deeper position in the guide slot 410 and cannot come out of the slot of the guide slot 410. The grass is squeezed and restrained in the guide slot 410, thereby preparing for the subsequent cutting assembly 500 to cut the grass.

[0125] In a third alternative embodiment, the number of cutting mechanisms 200 is two, wherein a plurality of guide slots 410 of one cutting mechanism 200 are arranged around the center of the protection assembly 400 in a clockwise direction, and a plurality of guide slots 410 of the other cutting mechanism 200 are arranged around the center of the protection assembly 400 in a counterclockwise direction.

[0126] For example, when the cutting mechanism 200 is located on the left side of the body 100, a plurality of guide slots 410 are arranged around the center of the protection assembly 400 in a counterclockwise direction.

[0127] As the cutting device 1000 advances and the protection assembly 400 rotates clockwise, the grass on the left side of the body 100 enters the guide slot 410 as the protection assembly 400 rotates, and as the protection assembly 400 rotates, the grass can enter a deeper position in the guide slot 410 and cannot come out of the slot of the guide slot 410. The grass is squeezed and restrained in the guide slot 410, thereby preparing for the subsequent cutting assembly 500 to cut the grass.

[0128] For example, when the cutting mechanism 200 is located at the right side of the machine body 100, the plurality of the guide grooves 410 are arranged in a counterclockwise direction around the center of the protection assembly 400. Further, the rotation direction of the protection assembly 400 is also counterclockwise.

[0129] As the cutting device 1000 advances and the protection assembly 400 rotates counterclockwise, the grass on the right side of the machine body 100 enters the guide grooves 410 as the protection assembly 400 rotates, and the grass can enter deeper into the guide grooves 410 as the protection assembly 400 rotates and cannot exit from the slot of the guide groove 410. The grass is squeezed and restrained in the guide groove 410, thereby preparing for the subsequent cutting assembly 500 to cut the grass.

[0130] Please refer to Figure 10 , the cutting assembly 500 is located in the protection range S1 of the protection assembly 400. Among them, the protection range S1 of the protection assembly 400 refers to the protection range S1 formed by the rotation of the protection assembly 400. That is, the cutting assembly 500 is located in the protection range S1 formed by the rotation of the protection assembly 400. Further, the guide groove 410 is at least partially located in the cutting range S2 of the cutting assembly 500. Among them, the cutting range S2 is the rotation range formed by the rotation of the cutting assembly 500.

[0131] In the height direction, the cutting assembly 500 can be located at the bottom of the protection assembly 400; or, please refer to Figures 10-12 , the cutting assembly 500 can also be sandwiched in the middle of the protection assembly 400. In the height direction, part or all of the guide groove 410 is directly opposite the cutting range S2 of the cutting assembly 500.

[0132] The protection assembly 400 in the embodiment can not only serve as an assembly to avoid direct exposure of the cutting assembly 500, but also can guide the grass outside the cutting range S2 into the cutting range S2 of the cutting assembly 500 and restrain and squeeze the grass, thereby improving the cutting efficiency and further improving the efficiency of the edge.

[0133] In an alternative embodiment, the protection range S1 and the cutting range S2 are both circular regions. The cutting radius of the cutting assembly 500 is smaller than the protection radius of the protection assembly 400.

[0134] Of course, in other embodiments, the cutting area of the cutting assembly 500 close to the outside of the machine body 100 is located in the protection range S1 of the protection assembly 400. The cutting area of the cutting assembly 500 close to the inside of the machine body 100 can be located outside the protection range S1 of the protection assembly 400.

[0135] Please refer to Figure 13The driving assembly 600 is connected to the protection assembly 400. The driving assembly 600 is used to drive the protection assembly 400 to rotate. In the process of rotation, the grass outside the main body 100 is continuously guided into the cutting range S2 of the cutting assembly 500 along the guide groove 410.

[0136] Please refer to Figure 9 The driving assembly 600 is also connected to the cutting assembly 500. The driving assembly 600 is also used to drive the cutting assembly 500 to rotate. In this way, the grass continuously guided into the cutting range S2 of the cutting assembly 500 along the guide groove 410 is cut by the cutting assembly 500, so as to trim the grass outside the main body 100, thereby avoiding leaving a blind area of mowing and improving the mowing effect.

[0137] The present application designs the cutting mechanism 200 to include the protection assembly 400, the cutting assembly 500, and the driving assembly 600. The protection assembly 400 has at least one guide groove 410. The guide groove 410 extends from the outer periphery of the protection assembly 400 to the side where the center of the protection assembly 400 is located, so that the grass can be guided into the cutting range S2 of the cutting assembly 500 along the guide groove 410. The cutting assembly 500 is arranged in the protection range S1 of the protection assembly 400. The driving assembly 600 is used to drive the protection assembly 400 to rotate, so that the grass outside the main body 100 is continuously guided into the cutting range S2 of the cutting assembly 500 along the guide groove 410. The driving assembly 600 is also used to drive the cutting assembly 500 to rotate, so that the grass guided into the guide groove 410 is cut by the cutting assembly 500, so as to trim the grass outside the main body 100, thereby avoiding leaving a blind area of mowing and improving the mowing effect.

[0138] The driving assembly 600 is illustrated below in combination with the accompanying drawings.

[0139] Optionally, please refer to Figure 9 The driving assembly 600 includes a first driving assembly 610. The first driving assembly 610 is connected to the cutting assembly 500. The first driving assembly 610 is used to drive the cutting assembly 500 to rotate. In the present embodiment, the cutting assembly 500 is driven by the first driving assembly 610 to rotate, thereby cutting the grass guided into the guide groove 410.

[0140] In a first optional embodiment, please refer to Figure 9 The first driving assembly 610 is connected to the protection assembly 400. The first driving assembly 610 is used to drive the protection assembly 400 to rotate. The first driving assembly 610 will be described in detail later.

[0141] In the embodiment, the cutting assembly 500 and the protection assembly 400 can be driven by the same driving structure (the first driving assembly 610). Compared with setting two driving structures to drive the cutting assembly 500 and the protection assembly 400 respectively, the number of driving structures and the space occupied by the driving structures can be reduced, and thus the space and weight of the whole cutting mechanism 200 can be reduced, and the cutting mechanism 200 is more portable, which is more conducive to the cutting mechanism 200 to perform the edge cutting task.

[0142] In a second alternative embodiment, please refer to Figure 13 The driving assembly 600 further comprises a second driving assembly 620. The second driving assembly 620 is connected to the protection assembly 400. The second driving assembly 620 is used to drive the protection assembly 400 to rotate. The first driving assembly 610 and the second driving assembly 620 will be described in detail later.

[0143] In the embodiment, the cutting assembly 500 and the protection assembly 400 are driven by different driving structures respectively. In this way, on the one hand, the cutting assembly 500 and the protection assembly 400 can be independently operated, which is convenient for the cutting assembly 500 and the protection assembly 400 to be flexibly designed in terms of rotation speed and rotation direction, and on the other hand, the complexity of each driving structure is simplified, which is convenient for designing each part of the driving structure and saving the cost of design, mold opening, processing, assembly, etc. of the driving assembly 600.

[0144] The rotation speed of the protection assembly 400 is not specifically limited in the application. The rotation speed of the cutting assembly 500 is not specifically limited in the application.

[0145] The rotation speed of the protection assembly 400 is less than the rotation speed of the cutting assembly 500. That is, the rotation speed of the cutting assembly 500 is greater than the rotation speed of the protection assembly 400. In this way, the cutting assembly 500 can rotate relative to the protection assembly 400 at a greater relative speed, and the grass restrained in the guide-in groove 410 of the protection assembly 400 is cut by the cutting assembly 500 at a greater relative speed, thereby improving the cutting efficiency.

[0146] Optionally, the rotating speed of the cutting assembly 500 is greater than or equal to 10 times the rotating speed of the protection assembly 400. When the cutting assembly 500 and the protection assembly 400 are driven by the same driving assembly, i.e. in the embodiment of single motor + transmission assembly driving the cutting assembly 500 and the protection assembly 400, the speed reduction ratio of the transmission assembly is greater than or equal to 10. When the cutting assembly 500 and the protection assembly 400 are driven by two independent driving assemblies respectively, i.e. in the embodiment of double motor driving the cutting assembly 500 and the protection assembly 400, the rotating speed of the driving motor of the cutting assembly 500 is greater than or equal to 10 times the rotating speed of the driving motor of the protection assembly 400; or, when the rotating speeds of the two motors are the same, the speed reduction ratio of the speed reduction gear of the protection assembly 400 is greater, and the speed reduction ratio of the speed reduction gear of the protection assembly 400 is greater than or equal to 10 times the speed reduction ratio of the speed reduction gear of the cutting assembly 500.

[0147] For example, the rotating speed of the cutting assembly 500 is 10 times, 15 times, 20 times, 25 times, 30 times, etc. the rotating speed of the protection assembly 400.

[0148] Further optionally, the rotating speed of the protection assembly 400 is less than or equal to 200 revolutions per minute, for example, the rotating speed of the protection assembly 400 is 1-2 revolutions per second.

[0149] The application designs the rotating speed of the protection assembly 400 to be much lower than the rotating speed of the cutting assembly 500, and the rotating speed of the protection assembly 400 is a relatively slow and suitable rotating speed. On the one hand, the rotating speed of the protection assembly 400 is designed to facilitate the rolling of the grass; on the other hand, the relatively slow rotating speed of the protection assembly 400 reduces the risk of scratches when it contacts the human body; and on the other hand, the relatively slow rotating speed of the protection assembly 400 also reduces the impact force when the protection assembly 400 contacts the wall surface, thereby avoiding physical damage.

[0150] The application does not specifically limit the rotating direction of the protection assembly 400. The application does not specifically limit the rotating direction of the cutting assembly 500.

[0151] In an optional embodiment, please refer to Figure 14 , the rotating direction of the protection assembly 400 is opposite to the rotating direction of the cutting assembly 500. That is to say, the grass introduced into the guide groove 410 rotates towards the cutting side of the cutting assembly 500 along with the protection assembly 400, one side of the grass in the guide groove 410 is subjected to the rotating pushing force of the protection assembly 400, and the other side is subjected to the rotating cutting force of the cutting assembly 500, the grass in the guide groove 410 is clamped on both sides by the protection assembly 400 and the cutting assembly 500 and is quickly cut by the cutting assembly 500, thereby improving the cutting efficiency of the grass cutting.

[0152] In another optional embodiment, please refer toFigure 15 The rotation direction of the protection assembly 400 is the same as the rotation direction of the cutting assembly 500. Based on the aforementioned, the rotation speed of the cutting assembly 500 is greater than the rotation speed of the protection assembly 400. Therefore, the cutting assembly 500 can rotate relative to the protection assembly 400 at a greater relative speed, so that the grass restrained in the guide-in groove 410 of the protection assembly 400 is cut by the cutting assembly 500 at a greater relative speed, thereby improving the cutting efficiency.

[0153] Optionally, referring to Figure 10 The rotation axis of the protection assembly 400 is the same as the rotation axis of the cutting assembly 500. In this way, the rotation shaft of the protection assembly 400 and the rotation shaft of the cutting assembly 500 can be coaxially connected in the height direction, so that the cutting area of the cutting assembly 500 corresponds to the area where the guide-in groove 410 is located, and then the grass on the outer periphery of the main body 100 enters the cutting area of the cutting assembly 500 through the guide-in groove 410 and is quickly cut by the cutting assembly 500.

[0154] The structure of the protection assembly 400 is described below in conjunction with the drawings.

[0155] Optionally, referring to Figure 10 The guide-in groove 410 includes an open end 411 and a closed end 412. The open end 411 is located on the outer periphery of the protection assembly 400. The closed end 412 is closer to the center of the protection assembly 400 relative to the open end 411. The groove width of the open end 411 is greater than the groove width of the closed end 412; or the groove width of the guide-in groove 410 gradually decreases from the open end 411 to the closed end 412.

[0156] Specifically, from the outer periphery of the protection assembly 400, towards the center of the protection assembly 400, a through portion is formed which penetrates in the height direction, thereby forming a guide-in groove 410. In the process of forming the through portion, the groove width of the open end 411 of the guide-in groove 410 is greater than the groove width of the closed end 412 of the guide-in groove 410, so that more grass enters the guide-in groove 410 from the open end 411 of the guide-in groove 410, and the grass entering the guide-in groove 410 is compressed at the closed end 412, so as to be rotated and cut by the cutting assembly 500.

[0157] Further optionally, the groove width of the guide-in groove 410 gradually decreases from the open end 411 to the closed end 412, so that the grass entering the guide-in groove 410 from the open end 411 of the guide-in groove 410 approaches the closed end 412 and is away from the open end 411 as the width of the guide-in groove 410 gradually decreases.

[0158] Optionally, referring to Figure 10The protection assembly 400 comprises a center disc 420 and a plurality of extension units 430 surrounding the outer periphery of the center disc 420. The guide-in grooves 410 are formed between two adjacent extension units 430. The extension direction of each extension unit 430 intersects the radial direction of the center disc 420.

[0159] The center of the center disc 420 is the center of the protection assembly 400. The center disc 420 is disc-shaped. The plurality of extension units 430 are sequentially and spacedly arranged around the outer periphery of the center disc 420. The guide-in grooves 410 are formed between two adjacent extension units 430, so that a plurality of guide-in grooves 410 are formed around the outer periphery of the center disc 420. Further, the plurality of guide-in grooves 410 can be uniformly distributed around the outer periphery of the center disc 420.

[0160] In this embodiment, the extension direction of each extension unit 430 intersects the radial direction of the center disc 420, so that the extension unit 430 not only can roll the grass outside into and bind the grass within the cutting range S2 of the cutting assembly 500, but also can block the grass within the cutting range S2 from going out along the guide-in groove 410, avoiding the centrifugal phenomenon that the grass within the guide-in groove 410 is thrown out, and improving the grass rolling rate (the grass rolling rate within the guide-in groove 410) and the grass binding rate (the probability that the grass within the guide-in groove 410 is bound and does not go out) during the rotation of the protection assembly 400.

[0161] In other embodiments, the extension direction of each extension unit 430 is the same as the radial direction of the center disc 420.

[0162] Further optionally, the extension trajectory of each extension unit 430 is an arc trajectory. The arc extension trajectory of the extension unit 430 is related to the rotation direction of the protection assembly 400. For example, when the rotation direction of the protection assembly 400 is counterclockwise, the extension trajectory of each extension unit 430 is arc-shaped and deviates to the counterclockwise direction. For example, when the rotation direction of the protection assembly 400 is clockwise, the extension trajectory of each extension unit 430 is arc-shaped and deviates to the clockwise direction.

[0163] In the embodiment, the extending direction of each extending unit 430 intersects with the radial direction of the center disc 420, and the extending track of each extending unit 430 is arc-shaped and deviates to the rotation direction of the protection assembly 400. In this way, the extending unit 430 can not only roll the grass outside into the cutting range S2 of the cutting assembly 500, but also block the grass in the cutting range S2 from going out of the guide groove 410, so as to avoid the grass in the guide groove 410 from being thrown out due to centrifugal phenomenon, and improve the grass rolling rate (the grass rolling rate in the guide groove 410) and the grass bundling rate (the probability that the grass in the guide groove 410 is bundled and does not go out) during the rotation of the protection assembly 400.

[0164] In other embodiments, the extending track of each extending unit 430 is a straight track.

[0165] Optionally, referring to Figure 10 each extending unit 430 includes a connecting end 431 and an extending end 432 arranged oppositely. The connecting end 431 and the extending end 432 are two ends in the extending direction of the extending unit 430. The connecting end 431 is connected to the center disc 420. Further, the connecting end 431 and the center disc 420 are interconnected as a whole.

[0166] The width of the extending end 432 is smaller than the width of the connecting end 431. The width of the extending end 432 is small, for example, the extending end 432 is a pointed end, so that the opening end 411 of the guide groove 410 has a larger width. On the other hand, by setting the width of the extending end 432 to be small, the pushing surface of the extending end 432 for the grass on the side is small, and the extending end 432 is more easily inserted into the gap of the grass, and then the grass is guided into the guide groove 410.

[0167] In other embodiments, the width of the extending unit 430 in the extending direction can be relatively uniform.

[0168] The pointed end of the extending end 432 of each extending unit 430 is located on the circumscribed circle of the protection assembly 400.

[0169] Optionally, referring to Figure 10 the circumcenter of the extending end 432 coincides with the center of the center disc 420.

[0170] The circumcenter of the extending end 432 is the center of the circumscribed circle of the pointed end of the extending end 432 of each extending unit 430. The center of the center disc 420 is the center of the disc of the center disc 420. The center of the protection assembly 400 is collinear with the center of the center disc 420.

[0171] Further, the rotation shaft of the cutting assembly 500 can be arranged at the center of the cutting assembly 500, and can correspond to the center of the center disc 420, so that the cutting assembly 500 is coaxially arranged with the protection assembly 400. When the cutting range S2 of the cutting assembly 500 is a circular region, the protection range S1 of the protection assembly 400 is also a circular region, and the cutting range S2 and the protection range S1 are two concentric circles. The radius of the protection range S1 is greater than the radius of the cutting range S2.

[0172] Optionally, referring to Figure 9 , the cutting assembly 500 is coaxially arranged with the first driving assembly 610. Specifically, the first driving assembly 610 includes a first motor and a motor output shaft. The rotation shaft of the cutting assembly 500 is connected with the motor output shaft in the axial direction, and the motor output shaft rotates to drive the cutting assembly 500 to rotate.

[0173] Optionally, referring to Figure 11 , the cutting assembly 500 includes at least one blade 510 and a blade shaft 520. The number of the blade 510 is one or more. In the embodiment, the blade 510 can be arranged along the diameter of the cutting range S2. In other embodiments, the blade 510 can be arranged along the radius of the cutting range S2. In the embodiment, the number of the blade 510 is one.

[0174] The middle part or the end part of the blade 510 has a shaft hole. The blade shaft 520 penetrates the shaft hole.

[0175] Optionally, the blade shaft 520 penetrates the blade 510. When the blade 510 is arranged along the diameter of the cutting range S2, the blade shaft 520 is arranged to penetrate the central position (middle part) of the blade 510. When the blade 510 is arranged along the radius of the cutting range S2, the blade shaft 520 is arranged to penetrate the end part of the blade 510.

[0176] When the cutting assembly 500 rotates, the driving assembly 600 is connected with the blade shaft 520. The driving assembly 600 is used to drive the blade 510 to rotate through the blade shaft 520.

[0177] The blade shaft 520 is the rotation shaft of the aforementioned cutting assembly 500. For example, the first driving assembly 610 includes a motor and a motor output shaft. The blade shaft 520 is connected with the motor output shaft in the axial direction, and the motor output shaft rotates to drive the blade shaft 520 to rotate, thereby driving the blade 510 to rotate.

[0178] Referring to Figure 11, at least one side of the blade 510 has a cutting edge 530. Specifically, the rotation direction side of the blade 510 has a cutting edge 530. In this embodiment, the blade 510 is arranged along the diameter of the cutting range S2, and the blade 510 is provided with two cutting edges 530, which are respectively arranged on the radial sides of the blade shaft 520, and the two cutting edges 530 are both directed to the rotation direction side of the blade 510.

[0179] For example, the protection assembly 400 rotates in the counterclockwise direction, and the cutting assembly 500 rotates in the clockwise direction. The cutting edge 530 on the left side of the blade shaft 520 is upward, and the cutting edge 530 on the right side of the blade shaft 520 is downward. Thus, as the cutting assembly 500 rotates in the clockwise direction, the two cutting edges 530 work at the same time, and each cutting edge 530 moves relative to the extension unit 430, so that the grass is compressed in the deep part of the guide groove 410, and the cutting edge 530 quickly cuts the grass, thereby improving the mowing efficiency.

[0180] Optionally, referring to Figure 11 , the rotation front side of the blade 510 has a cutting edge 530. The side of the blade 510 with the cutting edge 530 is opposite to the rotation front side of the protection assembly 400. That is, the rotation front side of the blade 510 is opposite to the rotation front side of the protection assembly 400, so that the grass is compressed in the deep part of the guide groove 410, and the cutting edge 530 quickly cuts the grass, thereby improving the mowing efficiency.

[0181] Optionally, referring to Figure 10 and Figure 11 , the cutting edge 530 is arc-shaped. The protection assembly 400 includes at least one arc-shaped extension unit 430. The arc-shaped cutting edge of the cutting edge 530 is opposite to the arc-shaped opening of the extension unit 430.

[0182] For example, the protection assembly 400 rotates in the counterclockwise direction, and the cutting assembly 500 rotates in the clockwise direction. The arc-shaped cutting edge of the cutting edge 530 on the left side of the blade shaft 520 is upward, and the extension unit 430 on the left side of the center disc 420 is biased to the counterclockwise direction and extends in an arc shape, that is, it extends downward from the center disc 420 to the outside in an arc shape. Therefore, the upward arc-shaped cutting edge on the left side of the blade shaft 520 is opposite to the arc-shaped downward extension unit 430, so that the grass is compressed in the deep part of the guide groove 410, and the cutting edge 530 quickly cuts the grass, thereby improving the mowing efficiency. It also makes the cutting edge 530 of the cutting assembly 500 cut from the opening end 411 of the guide groove 410 to the closing end 412, which can prevent the grass in the guide groove 410 from coming out of the guide groove 410, and also compresses and cuts the grass in the guide groove 410, thereby improving the mowing efficiency.

[0183] The arc-shaped blade edge of the blade 530 on the right side of the blade shaft 520 faces downward, the extension units 430 on the right side of the center disc 420 extend in an arc shape in the counterclockwise direction, i.e., extend in an arc shape upward from the center disc 420 to the outside, and the downward arc-shaped blade edge on the right side of the blade shaft 520 is opposite to the upward arc-shaped extension units 430. In this way, the grass is pressed into the deep part of the guide groove 410 while the blade 530 quickly cuts the grass, thereby improving the mowing efficiency.

[0184] Optionally, referring to Figure 12 , the cutting mechanism 200 further comprises a connecting bearing 710. The connecting bearing 710 comprises a first shaft ring 711 and a second shaft ring 712 which are sleeved and rotatable relative to each other. The first shaft ring 711 is connected to the cutting assembly 500. Further, the first shaft ring 711 is sleeved on the outer periphery of the blade shaft 520. The second shaft ring 712 is connected to the protection assembly 400. Further, the outer periphery of the second shaft ring 712 is connected to the inner periphery of the protection assembly 400.

[0185] The present embodiment is provided with the connecting bearing 710, which comprises the first shaft ring 711 and the second shaft ring 712 which are sleeved and rotatable relative to each other, the first shaft ring 711 is sleeved on the outer periphery of the blade shaft 520, and the outer periphery of the second shaft ring 712 is connected to the inner periphery of the protection assembly 400. The first shaft ring 711 and the second shaft ring 712 can move independently of each other, so that the cutting assembly 500 and the protection assembly 400 can move independently of each other, which is beneficial to the opposite rotation direction of the cutting assembly 500 and the protection assembly 400 or the rotation speed of the cutting assembly 500 being greater than that of the protection assembly 400.

[0186] The structure of the cutting mechanism 200 provided by the second embodiment of the present application is exemplified below in combination with the accompanying drawings.

[0187] Optionally, referring to Figure 8 and Figure 9 , the cutting mechanism 200 comprises a protection assembly 400, a cutting assembly 500, and a driving assembly 600.

[0188] Optionally, referring to Figure 10 , the protection assembly 400 comprises a center disc 420 and a plurality of extension units 430 which surround the outer periphery of the center disc 420.

[0189] Optionally, referring to Figure 10 , the guide groove 410 is formed between two adjacent extension units 430. The guide groove 410 is used for allowing the grass on the periphery to enter the protection assembly 400. The guide groove 410 extends from the outer periphery of the protection assembly 400 to the side where the center of the protection assembly 400 is located. The extension direction of each extension unit 430 intersects with the radial direction of the center disc 420.

[0190] The center of the center disc 420 is the center of the protection assembly 400. The center disc 420 is disc-shaped. A plurality of extension units 430 are sequentially and spacedly arranged on the outer circumferential side of the center disc 420. The guide-in groove 410 is formed between two adjacent extension units 430. In this way, a plurality of guide-in grooves 410 are formed on the outer circumferential side of the center disc 420. Further, the plurality of guide-in grooves 410 can be uniformly distributed on the outer circumferential side of the center disc 420.

[0191] In this embodiment, as shown in Figure 10 , the extension direction of each extension unit 430 intersects the radial direction of the center disc 420. In this way, the extension unit 430 not only can roll the grass outside into the cutting range S2 of the cutting assembly 500 and bind the grass, but also can block the grass in the cutting range S2 from going out of the guide-in groove 410, so as to avoid the grass in the guide-in groove 410 from being thrown out due to centrifugal phenomenon, and improve the grass rolling rate (in the guide-in groove 410) and the grass binding rate (the probability that the grass in the guide-in groove 410 is bound and does not go out) of the protection assembly 400.

[0192] As shown in Figure 10 , the cutting assembly 500 is arranged in the protection range S1 of the protection assembly 400. The protection range S1 of the protection assembly 400 refers to the orthographic projection range of the protection assembly 400 in the height direction. In this embodiment, the protection assembly 400 protects the cutting assembly 500 from being exposed.

[0193] As shown in Figure 10 , the guide-in groove 410 is at least partially located in the cutting range S2 of the cutting assembly 500. The cutting range S2 is the rotation range formed by the rotation of the cutting assembly 500.

[0194] In the height direction, the cutting assembly 500 can be located at the bottom of the protection assembly 400, or the cutting assembly 500 can also be clamped in the middle of the protection assembly 400. In the height direction, part or all of the guide-in groove 410 is directly opposite the cutting range S2 of the cutting assembly 500.

[0195] In an alternative embodiment, as shown in Figure 10 , the protection range S1 and the cutting range S2 are both circular regions. The cutting radius of the cutting assembly 500 is smaller than the protection radius of the protection assembly 400.

[0196] Of course, in other embodiments, the cutting area of the cutting assembly 500 close to the outside of the machine body 100 is located in the protection range S1 of the protection assembly 400. The cutting area of the cutting assembly 500 close to the inside of the machine body 100 can be located outside the protection range S1 of the protection assembly 400.

[0197] Referring to Figure 9 The driving assembly 600 is connected to the cutting assembly 500. The driving assembly 600 is used to drive the cutting assembly 500 to rotate. In this way, the grass entering the guide slot 410 is cut by the cutting assembly 500 to rotate, so as to trim the grass outside the main body 100, thereby avoiding leaving a blind area of mowing and improving the mowing effect.

[0198] Optionally, the protection assembly 400 can be in a static state relative to the main body 100. Alternatively, the protection assembly 400 can also be in a rotating state relative to the main body 100.

[0199] The cutting mechanism 200 in the present application comprises a protection assembly 400, a cutting assembly 500 and a driving assembly 600. The protection assembly 400 comprises a central disc 420 and a plurality of extension units 430 surrounding the outer circumferential side of the central disc 420, and the guide slot 410 is formed between two adjacent extension units 430. The grass can enter the cutting range S2 close to the cutting assembly 500 along the guide slot 410. The extension direction of each extension unit 430 intersects the radial direction of the central disc 420. The cutting assembly 500 is arranged in the protection range S1 of the protection assembly 400, and the guide slot 410 is at least partially located in the cutting range S2 of the cutting assembly 500. The driving assembly 600 is connected to the cutting assembly 500, and the driving assembly 600 is used to drive the cutting assembly 500 to rotate, so that the grass entering the guide slot 410 is cut by the cutting assembly 500 to rotate, so as to trim the grass outside the main body 100, thereby avoiding leaving a blind area of mowing and improving the mowing effect.

[0200] Optionally, the protection assembly 400 can rotate relative to the main body 100. The protection range S1 of the protection assembly 400 is the range formed by the rotation of the protection assembly 400.

[0201] Referring to Figure 10 The cutting assembly 500 is arranged in the protection range S1 of the protection assembly 400. That is, the cutting assembly 500 is located in the protection range S1 formed by the rotation of the protection assembly 400.

[0202] The protection assembly 400 in the present embodiment not only can be used as an assembly for avoiding direct exposure of the cutting assembly 500, but also can be used as an assembly for guiding the grass outside the cutting range S2 into the cutting range S2 of the cutting assembly 500 and binding and pressing the grass, thereby improving the cutting efficiency and further improving the trimming efficiency.

[0203] For example, when the cutting mechanism 200 is located at the left side of the body 100, the plurality of the guide slots 410 are arranged in a counterclockwise direction around the center of the protection assembly 400.

[0204] As the cutting device 1000 advances and the protection assembly 400 rotates in a clockwise direction, the grass on the left side of the body 100 enters the guide slots 410 as the protection assembly 400 rotates, and the grass is able to enter deeper into the guide slots 410 and not exit the slot opening of the guide slots 410 as the protection assembly 400 rotates. The grass is compressed and restrained within the guide slots 410 to facilitate fast cutting during the rotation of the cutting assembly 500.

[0205] For example, when the cutting mechanism 200 is located at the right side of the body 100, the plurality of the guide slots 410 are arranged in a counterclockwise direction around the center of the protection assembly 400. Further, the rotation direction of the protection assembly 400 is also counterclockwise.

[0206] As the cutting device 1000 advances and the protection assembly 400 rotates in a counterclockwise direction, the grass on the right side of the body 100 enters the guide slots 410 as the protection assembly 400 rotates, and the grass is able to enter deeper into the guide slots 410 and not exit the slot opening of the guide slots 410 as the protection assembly 400 rotates. The grass is compressed and restrained within the guide slots 410 to facilitate fast cutting during the rotation of the cutting assembly 500.

[0207] The structure of the protection assembly 400 is described below in conjunction with the accompanying drawings.

[0208] Optionally, please refer to Figure 16 and Figure 17 , the protection assembly 400 has a receiving cavity 440. The receiving cavity 440 is in communication with the guide slots 410. The cutting assembly 500 is disposed within the receiving cavity 440, so that the protection assembly 400 protects the cutting assembly 500. Further optionally, the cutting range S2 coincides with the area where the receiving cavity 440 is located.

[0209] Specifically, please refer to Figure 11 and Figure 17 , the protection assembly 400 includes a first cover 451 and a second cover 452.

[0210] The first cover 451 and the second cover 452 are overlapped along the height direction and form the receiving cavity 440. The protection assembly 400 can protect the cutting assembly 500 from both the horizontal direction and the vertical direction (height direction).

[0211] Optionally, the first cover 451 and the second cover 452 are detachably connected, so that the cutting assembly 500 can be installed in the accommodating cavity 440 of the first cover 451 and the second cover 452 by detaching the first cover 451 and the second cover 452, and the cutting assembly 500 can be detached from the accommodating cavity 440 of the first cover 451 and the second cover 452.

[0212] Optionally, the first cover 451 and the second cover 452 both include the central disc 420 and a plurality of the extension units 430 arranged on the outer circumferential side of the central disc 420.

[0213] Each of the extension units 430 includes a first extension part close to the central disc 420 and used for enclosing the accommodating cavity 440, and a second extension part away from the central disc 420 and located on the outer circumferential side of the accommodating cavity 440.

[0214] In other words, the first cover 451 and the second cover 452 both have the structure of the central disc 420 and a plurality of the extension units 430 arranged on the outer circumferential side, and the adjacent two extension units 430 form the introduction groove 410 which is in radial communication with the outside, so as to roll the grass on the outer circumferential side into the introduction groove 410 during rotation. Further, the first extension part and the second extension part are an integral structure, that is, two different parts of one extension unit 430.

[0215] The second extension part of the first cover 451 and the second extension part of the second cover 452 are connected by a detachable fixing member. The detachable fixing member includes but is not limited to a screw. The second extension part of the first cover 451 and the second extension part of the second cover 452 are both provided with opposite threaded holes.

[0216] The screw is arranged in the threaded hole to lock the second extension part of the first cover 451 and the second extension part of the second cover 452. By detaching the screw, the second extension part of the first cover 451 and the second extension part of the second cover 452 can be separated. The detachable connection of the first cover 451 and the second cover 452 can be realized. Since the positions of the threaded hole and the screw are located outside the cutting range S2, the detachable connection of the first cover 451 and the second cover 452 does not affect the rotation of the cutting assembly 500.

[0217] Further, when the second extension part of the first cover 451 and the second extension part of the second cover 452 are connected by the detachable fixing member, the central disc 420, the first extension part and the second extension part of the first cover 451 and the central disc 420, the first extension part of the second cover 452 are opposite and enclose the accommodating cavity 440.

[0218] In the height direction, a part of the accommodation cavity 440 is connected with the guide groove 410, in other words, the groove on the periphery of the protection assembly 400 can enter the area where the accommodation cavity 440 is located through the guide groove 410. The cutting assembly 500 is located in the accommodation cavity 440 and rotates in the accommodation cavity 440, thereby cutting the grass in the accommodation cavity 440.

[0219] Optionally, referring to Figure 10 , the guide groove 410 includes an open end 411 and a closed end 412. The open end 411 is located on the outer periphery of the protection assembly 400. The closed end 412 is closer to the center of the protection assembly 400 relative to the open end 411. The groove width of the open end 411 is greater than the groove width of the closed end 412; or the groove width of the guide groove 410 gradually decreases from the open end 411 to the closed end 412.

[0220] Specifically, from the outer periphery of the protection assembly 400 to the center of the protection assembly 400, a through portion is formed which penetrates in the height direction, thereby forming a guide groove 410. In the process of forming the through portion, the groove width of the open end 411 of the guide groove 410 is greater than the groove width of the closed end 412 of the guide groove 410, so that more grass enters the guide groove 410 from the open end 411 of the guide groove 410, and the grass entering the guide groove 410 is compressed at the closed end 412, so as to be cut by the rotating cutting assembly 500.

[0221] Further optionally, referring to Figure 10 , the groove width of the guide groove 410 gradually decreases from the open end 411 to the closed end 412, so that the grass entering the guide groove 410 from the open end 411 of the guide groove 410 approaches the closed end 412 and is away from the open end 411 as the width of the guide groove 410 gradually decreases.

[0222] Further optionally, referring to Figure 10 , the extension trajectory of each extension unit 430 is an arc trajectory. The arc extension trajectory of the extension unit 430 is related to the rotation direction of the protection assembly 400. For example, when the rotation direction of the protection assembly 400 is counterclockwise, the extension trajectory of each extension unit 430 is biased to extend in an arc line in the counterclockwise direction. For example, when the rotation direction of the protection assembly 400 is clockwise, the extension trajectory of each extension unit 430 is biased to extend in an arc line in the clockwise direction.

[0223] In this embodiment, the extension direction of each of the extension units 430 is arranged to intersect with the radial direction of the central disk 420, and the extension trajectory of each extension unit 430 is biased toward the rotation direction of the protection component 400 and extends in an arc. In this way, the extension unit 430 can not only roll the grass on the outside into and bind it within the cutting range S2 of the cutting component 500, but also block the grass within the cutting range S2 from going out along the inlet groove 410, avoiding the centrifugal phenomenon that causes the grass in the inlet groove 410 to be thrown out, thereby improving the grass entry rate (grass entry rate in the inlet groove 410) and grass bundling rate (the probability that the grass entering the inlet groove 410 will be bound and will not go out) during the rotation of the protection component 400.

[0224] In other embodiments, the extension trajectory of each extension unit 430 is a straight line trajectory.

[0225] Optional, see Figure 10 Each of the extension units 430 includes a connecting end 431 and an extending end 432 disposed opposite to each other. The connecting end 431 and the extending end 432 are two ends of the extending direction. The connecting end 431 is connected to the center disk 420. Furthermore, the connecting end 431 and the center disk 420 are interconnected as a whole.

[0226] See also Figure 10 The width of the extension end 432 is smaller than the width of the connecting end 431. The extension end 432 has a smaller width. For example, the extension end 432 is pointed, so that the opening end 411 of the introduction groove 410 has a larger width. On the other hand, by setting the width of the extension end 432 smaller, the extension end 432 has a smaller surface area for pushing and blocking the surrounding grass, making it easier for the extension end 432 to be inserted into the gaps in the grass, thereby guiding the grass into the introduction groove 410.

[0227] In other embodiments, the width of the extension unit 430 in the extension direction thereof may be relatively uniform.

[0228] The tips of the extension ends 432 of the plurality of extension units 430 are all located on the circumscribed circle of the protection assembly 400 .

[0229] Optional, see Figure 9 , the surrounding centers of the multiple extension ends 432 coincide with the center of the central disk 420.

[0230] The center of the plurality of extension ends 432 is the center of the circumscribed circle of the tip of each extension end 432 of the extension unit 430. The center of the center disk 420 is the center of the disk of the center disk 420. The center of the protection assembly 400 is collinear with the center of the center disk 420.

[0231] Further, the rotation shaft of the cutting assembly 500 can be arranged at the center of the cutting assembly 500, and can correspond to the center of the center disc 420, so that the cutting assembly 500 is coaxially arranged with the protection assembly 400. When the cutting range S2 of the cutting assembly 500 is a circular region, the protection range S1 of the protection assembly 400 is also a circular region, and the cutting range S2 and the protection range S1 are two concentric circles. The radius of the protection range S1 is greater than the radius of the cutting range S2.

[0232] Optionally, referring to Figure 11 , the cutting assembly 500 is coaxially arranged with the first driving assembly 610. Specifically, the first driving assembly 610 includes a motor and a motor output shaft. The rotation shaft of the cutting assembly 500 is connected with the motor output shaft in the axial direction, and the motor output shaft rotates to drive the cutting assembly 500 to rotate.

[0233] Optionally, referring to Figure 11 , the cutting assembly 500 includes at least one blade 510 and a blade shaft 520. The number of the blade 510 is one or more. In the embodiment, the blade 510 can be arranged along the diameter of the cutting range S2. In other embodiments, the blade 510 can be arranged along the radius of the cutting range S2. In the embodiment, the number of the blade 510 is one.

[0234] The middle part or the end part of the blade 510 has a shaft hole. The blade shaft 520 penetrates the shaft hole.

[0235] Optionally, the blade shaft 520 penetrates the blade 510. When the blade 510 is arranged along the diameter of the cutting range S2, the blade shaft 520 is arranged to penetrate the central position (middle part) of the blade 510. When the blade 510 is arranged along the radius of the cutting range S2, the blade shaft 520 is arranged to penetrate the end part of the blade 510.

[0236] When the cutting assembly 500 rotates, the driving assembly 600 is connected with the blade shaft 520. The driving assembly 600 is used to drive the blade 510 to rotate through the blade shaft 520.

[0237] The blade shaft 520 is the rotation shaft of the aforementioned cutting assembly 500. For example, the first driving assembly 610 includes a motor and a motor output shaft. The blade shaft 520 is connected with the motor output shaft in the axial direction, and the motor output shaft rotates to drive the blade shaft 520 to rotate, thereby driving the blade 510 to rotate.

[0238] Referring to Figure 14, at least one side of the blade 510 has a cutting edge 530. Specifically, the rotation direction side of the blade 510 has a cutting edge 530. In this embodiment, the blade 510 is arranged along the diameter of the cutting range S2, and the blade 510 is provided with two cutting edges 530, which are respectively arranged on the two sides of the blade shaft 520 in the radial direction, and the two cutting edges 530 are both directed to the rotation direction side of the blade 510.

[0239] For example, please refer to Figure 11 , the protection assembly 400 rotates in the counterclockwise direction, and the cutting assembly 500 rotates in the clockwise direction. The cutting edge 530 on the left side of the blade shaft 520 is upward, and the cutting edge 530 on the right side of the blade shaft 520 is downward. In this way, as the cutting assembly 500 rotates in the clockwise direction, the two cutting edges 530 work at the same time, and each cutting edge 530 moves relative to the extension unit 430, so that the grass is pressed in the deep part of the guide groove 410, and at the same time, the cutting edge 530 quickly cuts the grass, thereby improving the mowing efficiency. Also, the cutting edge 530 of the cutting assembly 500 cuts from the opening end 411 of the guide groove 410 to the closed end 412, which can prevent the grass in the guide groove 410 from coming out of the guide groove 410, and also press and cut the grass in the guide groove 410, thereby improving the mowing efficiency.

[0240] Optionally, please refer to Figure 11 , the rotation front side of the blade 510 has a cutting edge 530. The side of the blade 510 with the cutting edge 530 is opposite to the rotation front side of the protection assembly 400. That is, the rotation front side of the blade 510 is opposite to the rotation front side of the protection assembly 400, so that the grass is pressed in the deep part of the guide groove 410, and at the same time, the cutting edge 530 quickly cuts the grass, thereby improving the mowing efficiency.

[0241] Optionally, please refer to Figure 14 , the cutting edge 530 is arc-shaped. The protection assembly 400 includes at least one extension unit 430 which is arc-shaped. The arc-shaped cutting edge of the cutting edge 530 is opposite to the arc-shaped opening of the extension unit 430.

[0242] For example, please refer to Figure 2 , the protection assembly 400 rotates in the counterclockwise direction, and the cutting assembly 500 rotates in the clockwise direction. The arc-shaped cutting edge of the cutting edge 530 on the left side of the blade shaft 520 is upward, and the extension unit 430 on the left side of the center disc 420 is biased to the counterclockwise direction and extends in an arc shape, that is, it extends downward from the center disc 420 to the outside in an arc shape. Therefore, the upward arc-shaped cutting edge on the left side of the blade shaft 520 is opposite to the downward arc-shaped extension unit 430, so that the grass is pressed in the deep part of the guide groove 410, and at the same time, the cutting edge 530 quickly cuts the grass, thereby improving the mowing efficiency.

[0243] Please refer to Figure 14 and Figure 9, the arc-shaped cutting edge of the blade 530 on the right side of the blade shaft 520 faces downward, the extension unit 430 on the right side of the center disc 420 extends in an arc shape in a counterclockwise direction, that is, extends in an arc shape upward from the center disc 420 to the outside, and the arc-shaped upward extending unit 430 is opposite to the downward arc-shaped cutting edge of the blade 530 on the right side of the blade shaft 520. In this way, the grass is pressed in the deep part of the guide groove 410 while the blade 530 quickly cuts the grass, thereby improving the mowing efficiency. Also, the blade 530 of the cutting assembly 500 cuts from the opening end 411 of the guide groove 410 towards the closed end 412, which can prevent the grass in the guide groove 410 from coming out of the guide groove 410, and press and cut the grass in the guide groove 410, thereby improving the mowing efficiency.

[0244] The driving assembly 600 is illustrated below in combination with the accompanying drawings.

[0245] Optionally, please refer to Figure 9 The driving assembly 600 includes a first driving assembly 610. The first driving assembly 610 is connected to the cutting assembly 500. The first driving assembly 610 is used to drive the cutting assembly 500 to rotate. In this embodiment, the cutting assembly 500 rotates under the driving of the first driving assembly 610, and then cuts the grass entering the guide groove 410.

[0246] In a first optional embodiment, please refer to Figure 13 The first driving assembly 610 is connected to the protection assembly 400. The first driving assembly 610 is used to drive the protection assembly 400 to rotate. The first driving assembly 610 will be described in detail later.

[0247] In this embodiment, the cutting assembly 500 and the protection assembly 400 can be driven by the same driving structure (the first driving assembly 610). Compared with setting two driving structures to drive the cutting assembly 500 and the protection assembly 400 respectively, the number of driving structures and the space occupied by the driving structures can be reduced, and then the space and weight of the entire cutting mechanism 200 can be reduced, and the lightness is more conducive to the cutting mechanism 200 to perform the edge cutting task.

[0248] In a second optional embodiment, please refer to Figure 14 The driving assembly 600 further includes a second driving assembly 620. The second driving assembly 620 is connected to the protection assembly 400. The second driving assembly 620 is used to drive the protection assembly 400 to rotate. The first driving assembly 610 and the second driving assembly 620 will be described in detail later.

[0249] In this embodiment, the cutting assembly 500 and the protection assembly 400 are respectively driven by different driving structures. In this way, on the one hand, the cutting assembly 500 and the protection assembly 400 can be independently operated, so that the cutting assembly 500 and the protection assembly 400 can be flexibly designed in terms of rotation speed and rotation direction; on the other hand, the complexity of each driving structure is simplified, so that each part of the driving structure is facilitated to be designed, and the cost of design, mold opening, processing, assembly, etc. of the driving assembly 600 is saved.

[0250] The rotation speed of the protection assembly 400 is not specifically limited in the present application. The rotation speed of the cutting assembly 500 is not specifically limited in the present application.

[0251] The rotation speed of the cutting assembly 500 is greater than the rotation speed of the protection assembly 400. In this way, the cutting assembly 500 can rotate relative to the protection assembly 400 at a greater relative speed, so that the grass restrained in the guide groove 410 of the protection assembly 400 is cut by the cutting assembly 500 at a greater relative speed, thereby improving the efficiency of mowing.

[0252] Alternatively, the rotation speed of the cutting assembly 500 is greater than or equal to 10 times the rotation speed of the protection assembly 400. When the cutting assembly 500 and the protection assembly 400 are driven by the same driving assembly, i.e., in the embodiment in which a single motor + a transmission assembly simultaneously drives the cutting assembly 500 and the protection assembly 400, the speed reduction ratio of the transmission assembly is greater than or equal to 10. When the cutting assembly 500 and the protection assembly 400 are respectively driven by two independent driving assemblies, i.e., in the embodiment in which a double motor drives the cutting assembly 500 and the protection assembly 400, the rotation speed of the driving motor of the cutting assembly 500 is greater than or equal to 10 times the rotation speed of the driving motor of the protection assembly 400; or, when the rotation speeds of the two motors are the same, the speed reduction ratio of the speed reduction gear of the protection assembly 400 is greater, and the speed reduction ratio of the speed reduction gear of the protection assembly 400 is greater than or equal to 10 times the speed reduction ratio of the speed reduction gear of the cutting assembly 500.

[0253] For example, the rotation speed of the cutting assembly 500 is 10 times, 15 times, 20 times, 25 times, 30 times, etc. the rotation speed of the protection assembly 400.

[0254] Further alternatively, the rotation speed of the protection assembly 400 is less than or equal to 200 revolutions per minute, for example, the rotation speed of the protection assembly 400 is 1-2 revolutions per second.

[0255] The rotating speed of the protection assembly 400 is far lower than the rotating speed of the cutting assembly 500, and the rotating speed of the protection assembly 400 is a relatively slow and suitable rotating speed, which is beneficial to the rolling of the grass into the protection assembly 400, reduces the risk of scratching when the protection assembly 400 contacts the human body, and reduces the impact force when the protection assembly 400 contacts the wall, thereby avoiding physical damage.

[0256] The rotating direction of the protection assembly 400 is not limited in the application. The rotating direction of the cutting assembly 500 is not limited in the application.

[0257] In an optional embodiment, as shown in Figure 15 , the rotating direction of the protection assembly 400 is opposite to the rotating direction of the cutting assembly 500. That is, the grass in the guide groove 410 is rolled towards the cutting side of the cutting assembly 500 by the protection assembly 400, one side of the grass in the guide groove 410 is pushed by the rotating force of the protection assembly 400, and the other side of the grass is cut by the rotating cutting force of the cutting assembly 500, so that the grass in the guide groove 410 is clamped on both sides by the protection assembly 400 and the cutting assembly 500 and is quickly cut by the cutting assembly 500, thereby improving the cutting efficiency of the grass.

[0258] In another optional embodiment, as shown in Figures 18-19 , the rotating direction of the protection assembly 400 is the same as the rotating direction of the cutting assembly 500. Based on the rotating speed of the cutting assembly 500 being greater than the rotating speed of the protection assembly 400, the cutting assembly 500 can rotate relative to the protection assembly 400 at a greater relative speed, so that the grass in the guide groove 410 of the protection assembly 400 is cut by the cutting assembly 500 at a greater relative speed, thereby improving the cutting efficiency of the grass.

[0259] Embodiment three of the application provides a cutting mechanism 200.

[0260] As shown in Figures 18-21 , the cutting mechanism 200 is applied to a self-moving device. The self-moving device includes but is not limited to a cutting device 1000 such as a mower and an edging machine.

[0261] As shown in Figure 10 , the cutting mechanism 200 includes a protection assembly 400, a cutting assembly 500, and a connecting assembly 800.

[0262] As shown in Figure 10 , the protection assembly 400 has at least one guide groove 410. Specifically, the number of the guide grooves 410 is one or more. In this embodiment, the number of the guide grooves 410 is taken as an example.

[0263] Optionally, at least part of the guide slot 410 is located outside the projection area of the main body 100, so that the grass outside the main body 100 can enter the guide slot 410.

[0264] Referring to Figure 10 , the guide slot 410 extends from the outer periphery of the protection assembly 400 to the side where the center of the protection assembly 400 is located, so that the grass outside the main body 100 can enter the cutting range S2 close to the cutting assembly 500 along the guide slot 410.

[0265] Further optionally, referring to Figure 2 , the extension direction of each guide slot 410 is inclined relative to the running direction, so as to facilitate the grass outside to enter the position close to the center of the protection assembly 400 along the guide slot 410 as the cutting device 1000 advances and the protection assembly 400 rotates.

[0266] In the first optional embodiment, the number of cutting mechanisms 200 is one, and the plurality of guide slots 410 are arranged in the clockwise direction around the center of the protection assembly 400.

[0267] For example, when the cutting mechanism 200 is located on the left side of the main body 100, the plurality of guide slots 410 are arranged in the counterclockwise direction around the center of the protection assembly 400.

[0268] As the cutting device 1000 advances and the protection assembly 400 rotates clockwise, the grass on the left side of the main body 100 enters the guide slot 410 along with the rotation of the protection assembly 400, and the grass can enter a deeper position in the guide slot 410 along with the rotation of the protection assembly 400 and cannot exit from the slot of the guide slot 410, so that the grass is squeezed and restrained in the guide slot 410, thereby preparing for subsequent cutting by the cutting assembly 500.

[0269] In the second optional embodiment, referring to Figure 10 and Figure 10 , the number of cutting mechanisms 200 is one, and the plurality of guide slots 410 are arranged in the counterclockwise direction around the center of the protection assembly 400.

[0270] For example, when the cutting mechanism 200 is located on the right side of the main body 100, the plurality of guide slots 410 are arranged in the counterclockwise direction around the center of the protection assembly 400. Further, the rotation direction of the protection assembly 400 is also counterclockwise.

[0271] As the cutting device 1000 advances and the protection assembly 400 rotates counterclockwise, the grass on the right side of the main body 100 enters the guide slot 410 as the protection assembly 400 rotates, and the grass can enter a deeper position in the guide slot 410 without falling out of the slot of the guide slot 410 as the protection assembly 400 rotates. The grass is squeezed and restrained in the guide slot 410, thereby preparing for subsequent cutting by the cutting assembly 500.

[0272] In a third alternative embodiment, the number of cutting mechanisms 200 is two, wherein the plurality of guide slots 410 of one cutting mechanism 200 are arranged in a clockwise direction around the center of the protection assembly 400, and the plurality of guide slots 410 of the other cutting mechanism 200 are arranged in a counterclockwise direction around the center of the protection assembly 400.

[0273] Referring to Figure 10 , the cutting assembly 500 is located within the protection range S1 of the protection assembly 400. The protection range S1 of the protection assembly 400 refers to the protection range S1 formed by the rotation of the protection assembly 400. That is, the cutting assembly 500 is located within the protection range S1 formed by the rotation of the protection assembly 400. Further, the guide slot 410 is at least partially located within the cutting range S2 of the cutting assembly 500. The cutting range S2 is the rotation range formed by the rotation of the cutting assembly 500. In the height direction, the cutting assembly 500 can be located at the bottom of the protection assembly 400; alternatively, the cutting assembly 500 can also be sandwiched in the middle of the protection assembly 400.

[0274] Referring to Figure 2 , a portion of the guide slot 410 is located within the cutting range S2 of the cutting assembly 500. In the height direction, part or all of the guide slot 410 is directly opposite the cutting range S2 of the cutting assembly 500.

[0275] Referring to Figure 10 and Figure 1 , at least part of the guide slot 410 on the protection assembly 400 is located outside the orthographic projection area of the self-moving device. The cutting mechanism 200 extends out of the main body 100 for edging.

[0276] The general cutter head of the lawn mower is located at the bottom and cannot handle weeds at the junction of the lawn and the hard road surface or wall. Further, when the lawn mower is edging, the edging cutting mechanism 200 may collide with the hard wall or encounter stone obstacles, thereby causing physical damage to the edging cutting mechanism 200 or preventing the self-moving device from advancing.

[0277] Referring to Figure 18 , Figure 19 , Figure 20 and Figures 21-26The connecting assembly 800 is used to connect a part of the cutting mechanism 200 and the self-moving device. The connecting assembly 800 is used to drive the cutting assembly 500 (cutting mechanism 200) to rotate to avoid obstacles when the self-moving device travels. The rotation of the cutting mechanism 200 refers to the rotation of the cutting mechanism 200 as a whole around the height direction.

[0278] For example, during the forward movement of the self-moving device, the front of the cutting mechanism 200 encounters an obstacle because the cutting mechanism 200 protrudes beyond the orthographic projection area of the self-moving device. Under the resistance of the obstacle, the connecting assembly 800 drives the cutting mechanism 200 to rotate around the height direction towards the rear end, so that the cutting mechanism 200 rotates backward to avoid the obstacle without changing the forward path of the self-moving device. After passing the obstacle, the connecting assembly 800 drives the cutting mechanism 200 to return to the initial position and continue to mow and trim.

[0279] The cutting mechanism 200 provided by the present application includes a protection assembly 400, a cutting assembly 500, and a connecting assembly 800. The protection assembly 400 has at least one guide slot 410. The guide slot 410 extends from the outer periphery of the protection assembly 400 towards the side where the center of the protection assembly 400 is located. The cutting assembly 500 is arranged within the protection range S1 of the protection assembly 400. At least part of the guide slot 410 is located within the cutting range S2 of the cutting assembly 500. Part of the guide slot 410 is located within the cutting range S2 of the cutting assembly 500. At least part of the guide slot 410 on the protection assembly 400 is located outside the orthographic projection area of the self-moving device. The connecting assembly 800 is used to connect the cutting mechanism 200 and the self-moving device. The connecting assembly 800 is used to drive the cutting assembly 500 to rotate to avoid obstacles when the self-moving device travels. Not only can the cutting mechanism 200 of the self-moving device mow and trim, but also can automatically overcome obstacles during the mowing and trimming process of the cutting mechanism 200, avoid hard collision between the cutting mechanism 200 and the obstacle, and further cause physical damage to the trimming cutting mechanism 200 or the self-moving device cannot move forward, thereby improving the obstacle overcoming ability and intelligence of the self-moving device.

[0280] Optionally, referring to Figure 21 The cutting mechanism 200 includes a connecting bracket 210 (see Figures 22-26 ). The connecting bracket 210 is connected to the cutting assembly 500 or the protection assembly 400. The connecting bracket 210 is used to connect the cutting assembly 500 and the connecting assembly 800, or connect the protection assembly 400 and the connecting assembly 800. The cutting assembly 500 is connected to the protection assembly 400, and then the cutting assembly 500 is connected to the connecting assembly 800.

[0281] In the embodiment, when the cutting mechanism 200 is in the edge trimming position, the connecting bracket 210 extends in the width direction, one end of the connecting bracket 210 is connected to the protection assembly 400, and the other end of the connecting bracket 210 is connected to the connecting assembly 800.

[0282] The specific structure of the connecting assembly 800 is illustrated below in combination with the drawings.

[0283] Referring to Figures 22-26 , the connecting assembly 800 includes a rotating shaft assembly 810 and an elastic reset assembly 820.

[0284] Referring to Figures 22-26 , the rotating shaft assembly 810 is arranged in the height direction. The rotating shaft assembly 810 is connected to the connecting bracket 210. The rotating shaft assembly 810 is arranged through the connecting bracket 210 in the height direction. The connecting bracket 210 is fixedly connected to the rotating shaft assembly 810 by means of a tight-fitting connecting member (such as a gasket, a screw, etc.). The connecting bracket 210 can be rotated by (with) the rotation of the rotating shaft assembly 810.

[0285] The elastic reset assembly 820 is arranged in the self-moving device. Further, at least part of the elastic reset assembly 820 is relatively fixed in the horizontal plane of the self-moving device. Details are described later.

[0286] The elastic reset assembly 820 can exert an elastic force on the connecting bracket 210 or the rotating shaft assembly 810, so as to rotate the connecting bracket 210 to the reset position.

[0287] For example, in the process of advancing the self-moving device, the front of the cutting mechanism 200 hits an obstacle, and under the resistance of the obstacle, the connecting bracket 210 and the rotating shaft assembly 810 drive the cutting mechanism 200 to rotate around the height direction towards the rear end compared with the self-moving device, so that the cutting mechanism 200 rotates backward to avoid the obstacle without changing the advancing path of the self-moving device, until after passing the obstacle, the elastic reset assembly 820 can exert an elastic force on the connecting bracket 210 or the rotating shaft assembly 810, the rotating shaft assembly 810 drives the connecting bracket 210 to rotate to the reset position, drives the cutting mechanism 200 to rotate to the edge trimming position, and continues to mow and trim the edge.

[0288] Optionally, referring to Figures 22-26 , the elastic reset assembly 820 includes a buffer seat 821 and a rotating shaft elastic member 822.

[0289] The buffer seat 821 is connected to the self-moving device. Furthermore, the side of the self-moving device has a retaining groove, and the buffer seat 821 is installed in the retaining groove from the top along the height direction. The retaining groove limits the movement of the buffer seat 821 within the horizontal plane. Furthermore, the buffer seat 821 is fixed to the self-moving device in the height direction via screws.

[0290] See also Figures 22-26 The buffer seat 821 is located on the connecting bracket 210 and is sleeved around the periphery of the shaft assembly 810. The buffer seat 821 and the connecting bracket 210 are arranged in a height direction and are sleeved around the periphery of the shaft assembly 810.

[0291] See also Figures 22-26 Furthermore, the connecting bracket 210 includes a bracket body 211, a first bracket arm 212, and a second bracket arm 213, which are interconnected as one body. The bracket body 211 is used to accommodate the drive assembly 600 and the installation protection assembly 400. The bracket body 211 is located outside the positioning slot, and the first bracket arm 212 and the second bracket arm 213 are spaced apart in the height direction. The buffer seat 821 is located between the first bracket arm 212 and the second bracket arm 213. The buffer seat 821 is mounted on the periphery of the rotating shaft assembly 810 and is spaced apart from the rotating shaft assembly 810.

[0292] Optional, see Figure 24 The rotating shaft elastic member 822 is disposed between the buffer seat 821 and the rotating shaft assembly 810. One end of the rotating shaft elastic member 822 elastically abuts or is elastically connected to the rotating shaft assembly 810, and at least one end of the rotating shaft elastic member 822 elastically abuts or is elastically connected to the buffer seat 821. The rotating shaft elastic member 822 elastically connects the rotating shaft assembly 810 and the buffer seat 821 in the horizontal plane, thereby enabling the rotating shaft assembly 810 to rotate toward the front or rear end relative to the buffer seat 821 in the horizontal plane to avoid obstacles.

[0293] For details, please refer to Figure 26 and Figure 24 The buffer seat 821 has a hole. A first abutting portion 823 is protruded on the hole wall.

[0294] See also Figure 26 and Figure 24The rotating shaft assembly 810 includes a rotating shaft 811 and a rotating shaft connecting piece 812. The rotating shaft 811 is fixedly connected to the connecting support 210. The rotating shaft connecting piece 812 is fixed to the outer wall of the rotating shaft 811. The rotating shaft connecting piece 812 is located in the hole of the buffer seat 821, that is, the rotating shaft connecting piece 812 is accommodated in the hole of the buffer seat 821. The rotating shaft elastic piece 822 is sleeved on the rotating shaft connecting piece 812. One end of the rotating shaft elastic piece 822 elastically abuts against or elastically connects the rotating shaft connecting piece 812, and the other end of the rotating shaft elastic piece 822 elastically abuts against or elastically connects the first abutting portion 823. The rotating shaft elastic piece 822 enables the rotating shaft assembly 810 to rotate relative to the buffer seat 821 in the horizontal plane, so that the rotating shaft assembly 810 can rotate relative to the buffer seat 821 in the horizontal plane towards the front end or the rear end to avoid obstacles.

[0295] Specifically, please refer to Figure 26 and Figure 25 The rotating shaft connecting piece 812 includes a body portion 813 and a hook portion 814 protruding from the body portion 813. The body portion 813 is sleeved on the rotating shaft 811. The body portion 813 and the hook portion 814 are in an integrated structure.

[0296] Please refer to Figure 26 and Figure 13 The rotating shaft elastic piece 822 is a torsion spring. The rotating shaft elastic piece 822 includes a first torsion arm 815, a first spiral arm 816, an intermediate connecting arm 817, a second spiral arm 818 and a second torsion arm 819 connected in sequence. The first torsion arm 815 and the second torsion arm 819 abut against the first abutting portion 823 of the buffer seat 821 in the height direction. The first spiral arm 816 and the second spiral arm 818 are sleeved on the rotating shaft 811. The intermediate connecting arm 817 is engaged with the hook portion 814 of the rotating shaft connecting piece 812.

[0297] For example, during the process of the self-moving device advancing, the front of the cutting mechanism 200 encounters an obstacle due to the cutting mechanism 200 extending beyond the orthographic projection area of the self-moving device, and under the resistance of the obstacle, the protection assembly 400 drives the connecting bracket 210 to rotate, the connecting bracket 210 drives the rotating shaft 811 and the rotating shaft connecting piece 812 to rotate, the rotating shaft elastic piece 822 is a torsion spring, since the first torsion arm 815 and the second torsion arm 819 are relatively fixed, and the middle connecting arm 817 rotates with the rotating shaft connecting piece 812, the first spiral arm 816 and the second spiral arm 818 deform, at this time the torsion spring is in an energy storage state, during this process, the cutting mechanism 200 rotates towards the rear end in the height direction compared to the self-moving device, so that the cutting mechanism 200 rotates backwards to avoid the obstacle without changing the advancing path of the self-moving device, and after passing the obstacle, the protection assembly 400 is no longer subjected to the resistance of the obstacle, the first spiral arm 816 and the second spiral arm 818 drive the rotating shaft connecting piece 812 and the rotating shaft 811 to return to the initial position under the elastic restoring force, thereby driving the connecting bracket 210, the protection assembly 400 and the cutting assembly 500 to return to the initial position, and driving the cutting mechanism 200 to rotate to the edge trimming position to continue mowing and trimming.

[0298] Optionally, referring to Figure 13 , the cutting mechanism 200 further comprises a driving assembly 600.

[0299] Optionally, referring to Figure 12 , the driving assembly 600 is connected to the protection assembly 400, and the driving assembly 600 is used to drive the protection assembly 400 to rotate. During the rotation of the protection assembly 400, the grass outside the main body 100 continuously enters the cutting range S2 close to the cutting assembly 500 along the guide-in groove 410.

[0300] Further optionally, referring to Figure 13 and Figure 22 , the driving assembly 600 is connected to the cutting assembly 500, and the driving assembly 600 is used to drive the cutting assembly 500 to rotate. In this way, the grass outside the main body 100 continuously enters the cutting range S2 close to the cutting assembly 500 along the guide-in groove 410 and is rotated and cut by the cutting assembly 500 to achieve edge trimming, thereby avoiding leaving a mowing blind area and improving the mowing effect.

[0301] Optionally, the driving assembly 600 is connected to the cutting assembly 500 and the protection assembly 400, and the driving assembly 600 is configured to drive the cutting assembly 500 to rotate, and the driving assembly 600 is configured to drive the protection assembly 400 to rotate. In the process of rotation, the protection assembly 400 enables the grass outside the main body 100 to continuously enter the cutting range S2 of the cutting assembly 500 along the guide groove 410. When the grass continuously enters the cutting range S2 of the cutting assembly 500 along the guide groove 410 and is cut by the cutting assembly 500, the grass outside the main body 100 is trimmed, thereby avoiding leaving a blind area and improving the cutting effect.

[0302] Referring to Figure 10 The driving assembly 600 is arranged in the bracket body 211. The protection assembly 400 is connected to the bottom of the bracket body 211. The cutting assembly 500 is arranged at or in the bottom of the protection assembly 400, so that the protection assembly 400 can roll the grass into the guide groove 410 and the cutting range S2 of the cutting assembly 500, and the cutting assembly 500 can quickly cut the grass.

[0303] The cutting mechanism 200 further comprises a detector (not shown) and a controller (not shown). At least part of the detector is arranged on the connecting assembly 800. The detector is configured to detect the rotation angle of the cutting mechanism 200 relative to the self-moving device.

[0304] For example, the detector includes, but is not limited to, an encoder or an angle detector; or the detector includes a Hall sensor and a magnet.

[0305] The controller is electrically connected to the detector. The controller is configured to control the driving assembly 600 to stop driving when the detector detects that the rotation angle of the cutting mechanism 200 relative to the self-moving device is greater than a first preset angle.

[0306] If the rotation angle of the cutting mechanism 200 relative to the self-moving device is greater than the first preset angle, it indicates that the cutting mechanism 200 encounters an obstacle. At this time, if the protection assembly 400 continues to rotate, the cutting assembly 500 continues to rotate, which may cause the cutting mechanism 200 to be damaged. Based on this, the controller can control the driving assembly 600 to stop driving when the detector detects that the rotation angle of the cutting mechanism 200 relative to the self-moving device is greater than the first preset angle, so that the protection assembly 400 and the cutting assembly 500 are in a static state, thereby avoiding the protection assembly 400 and the cutting assembly 500 in a rotating state and hard collision with the obstacle, causing the cutting mechanism 200 to be damaged.

[0307] Further, the cutting mechanism 200 encounters the obstacle, and if the self-moving device continues to move forward, the cutting mechanism 200 can be damaged. The controller can also control the self-moving device to stop moving, so as to avoid the cutting mechanism 200 from being damaged under the traction of the forward movement and the resistance of the obstacle.

[0308] The present application does not make specific limitation on the first preset angle. The first preset angle includes but is not limited to 1°-10°, for example, the first preset angle is 1°, 2°, 3°, 4°, 5°, 6°, 7°, 8°, 9°, 10°, etc.

[0309] The controller is further configured to control the driving assembly 600 to resume driving when the detector detects that the rotation angle of the cutting mechanism 200 relative to the self-moving device is reduced to less than or equal to the first preset angle.

[0310] If the rotation angle of the cutting mechanism 200 relative to the self-moving device is less than or equal to the first preset angle, it indicates that the cutting mechanism 200 has passed the obstacle, at this time, the driving assembly 600 can be controlled to resume driving, so that the protection assembly 400 and the cutting assembly 500 resume the working state to restore the trimming state.

[0311] The structure of the protection assembly 400 is illustrated below in combination with the drawings.

[0312] Optionally, please refer to Figure 10 The import groove 410 includes an open end 411 and a closed end 412. The open end 411 is located at the outer periphery of the protection assembly 400. The closed end 412 is close to the center of the protection assembly 400 relative to the open end 411. The groove width of the open end 411 is greater than the groove width of the closed end 412; or the groove width of the import groove 410 gradually decreases from the open end 411 to the closed end 412.

[0313] Specifically, from the outer periphery of the protection assembly 400, a through portion is formed in the direction of the center of the protection assembly 400, thereby forming an import groove 410. In the process of forming the through portion, the groove width of the open end 411 of the import groove 410 is greater than the groove width of the closed end 412 of the import groove 410, so as to facilitate more grass entering the import groove 410 from the open end 411 of the import groove 410, and facilitate the grass entering the import groove 410 being compressed at the closed end 412, so as to be cut by the cutting assembly 500.

[0314] Further optionally, please refer to Figure 10The slot width of the guide slot 410 gradually decreases from the opening end 411 to the closing end 412, so that the grass entering the guide slot 410 from the opening end 411 gradually approaches the closing end 412 and is far away from the opening end 411 as the width of the guide slot 410 gradually decreases.

[0315] Optionally, referring to Figure 10 The protection assembly 400 comprises a central disc 420 and a plurality of extension units 430 surrounding the outer periphery of the central disc 420. The guide slot 410 is formed between two adjacent extension units 430. The extension direction of each extension unit 430 intersects the radial direction of the central disc 420.

[0316] Optionally, referring to Figure 10 The center of the central disc 420 is the center of the protection assembly 400. The central disc 420 is disc-shaped. The plurality of extension units 430 are sequentially and spacedly arranged around the outer periphery of the central disc 420. The guide slot 410 is formed between two adjacent extension units 430, so that a plurality of guide slots 410 are formed around the outer periphery of the central disc 420. Further, the plurality of guide slots 410 can be uniformly distributed around the outer periphery of the central disc 420.

[0317] In this embodiment, by arranging the extension direction of each extension unit 430 to intersect the radial direction of the central disc 420, the extension unit 430 not only can roll and bind the grass outside into the cutting range S2 of the cutting assembly 500, but also can block the grass in the cutting range S2 from going out of the guide slot 410, avoiding the grass in the guide slot 410 from being thrown out due to centrifugal phenomenon, and improving the grass entering rate (the grass entering rate in the guide slot 410) and the grass binding rate (the probability that the grass entering the guide slot 410 is bound and does not go out) during the rotation of the protection assembly 400.

[0318] In other embodiments, the extension direction of each extension unit 430 is the same as the radial direction of the central disc 420.

[0319] Optionally, referring to Figure 10 The extension trajectory of each extension unit 430 is an arc trajectory. The arc extension trajectory of the extension unit 430 is related to the rotation direction of the protection assembly 400. For example, when the rotation direction of the protection assembly 400 is counterclockwise, the extension trajectory of each extension unit 430 is an arc extending in the counterclockwise direction. For example, when the rotation direction of the protection assembly 400 is clockwise, the extension trajectory of each extension unit 430 is an arc extending in the clockwise direction.

[0320] In this embodiment, the extending direction of each extending unit 430 intersects with the radial direction of the center disc 420, and the extending trajectory of each extending unit 430 is an arc extending towards the rotation direction of the protection assembly 400. In this way, the extending unit 430 not only can roll the grass outside into the cutting range S2 of the cutting assembly 500, but also can block the grass in the cutting range S2 from going out of the guide groove 410, so as to avoid the grass in the guide groove 410 from being thrown out due to centrifugal phenomenon, and improve the grass rolling rate (the grass rolling rate in the guide groove 410) and the grass bundling rate (the probability that the grass entering the guide groove 410 is bundled and cannot go out) during the rotation of the protection assembly 400.

[0321] In other embodiments, the extending trajectory of each extending unit 430 is a straight line trajectory.

[0322] Optionally, referring to Figure 10 each extending unit 430 comprises a connecting end 431 and an extending end 432 arranged oppositely. The connecting end 431 and the extending end 432 are two ends in the extending direction of the extending unit 430. The connecting end 431 is connected to the center disc 420. Further, the connecting end 431 and the center disc 420 are interconnected as a whole.

[0323] Referring to Figure 10 , the width of the extending end 432 is smaller than the width of the connecting end 431. The width of the extending end 432 is smaller, for example, the extending end 432 is a pointed end, so that the opening end 411 of the guide groove 410 has a larger width. On the other hand, by setting the width of the extending end 432 to be small, the pushing surface of the extending end 432 for the grass around is small, and the extending end 432 is easier to insert into the gap of the grass, and then guide the grass into the guide groove 410.

[0324] In other embodiments, the width of the extending unit 430 in the extending direction can be relatively uniform.

[0325] The pointed end points of the extending ends 432 of the plurality of extending units 430 are located on the circumscribed circle of the protection assembly 400.

[0326] Optionally, referring to Figures 10-12 the circumcenters of the plurality of extending ends 432 coincide with the center of the center disc 420.

[0327] The circumcenter of the plurality of extending ends 432 is the center of the circumscribed circle of the pointed end points of the extending end 432 of each extending unit 430. The center of the center disc 420 is the center of the disc of the center disc 420. The center of the protection assembly 400 is collinear with the center of the center disc 420.

[0328] Further, referring to Figures 10-12The rotation shaft 811 of the cutting assembly 500 can be arranged at the center of the cutting assembly 500, or can correspond to the center of the center disc 420, so that the cutting assembly 500 is coaxially arranged with the protection assembly 400. When the cutting range S2 of the cutting assembly 500 is a circular region, the protection range S1 of the protection assembly 400 is also a circular region, and the cutting range S2 and the protection range S1 are two concentric circles. The radius of the protection range S1 is greater than the radius of the cutting range S2.

[0329] Optionally, referring to Figures 10-12 The cutting assembly 500 includes at least one blade 510 and a blade shaft 520. The number of the blade 510 is one or more. In the embodiment, the blade 510 can be arranged along the diameter of the cutting range S2. In other embodiments, the blade 510 can be arranged along the radius of the cutting range S2. In the embodiment, the number of the blade 510 is one.

[0330] The middle or end of the blade 510 has a shaft hole. The blade shaft 520 penetrates the shaft hole.

[0331] Optionally, the blade shaft 520 is arranged through the blade 510. When the blade 510 is arranged along the diameter of the cutting range S2, the blade shaft 520 is arranged through the central position (middle) of the blade 510. When the blade 510 is arranged along the radius of the cutting range S2, the blade shaft 520 is arranged through the end of the blade 510.

[0332] When the cutting assembly 500 rotates, the driving assembly 600 is connected to the blade shaft 520. The driving assembly 600 is used to drive the blade 510 to rotate through the blade shaft 520.

[0333] The blade shaft 520 is the rotation shaft 811 of the aforementioned cutting assembly 500. For example, the driving assembly 600 includes a motor and a motor output shaft. The blade shaft 520 is connected to the motor output shaft in the axial direction, and the motor output shaft rotates to drive the blade shaft 520 to rotate, thereby driving the blade 510 to rotate.

[0334] Referring to Figures 10-12 At least one side of the blade 510 has a blade edge 530. Specifically, the rotation direction side of the blade 510 has a blade edge 530. In the embodiment, the blade 510 is arranged along the diameter of the cutting range S2, and the blade 510 is provided with two blade edges 530, which are respectively arranged on the two sides of the blade shaft 520 in the radial direction, and both of the two blade edges 530 are directed to the rotation direction side of the blade 510.

[0335] For example, the protection assembly 400 rotates in the counterclockwise direction, and the cutting assembly 500 rotates in the clockwise direction. The arc-shaped blade edge of the blade 530 on the left side of the blade shaft 520 faces upward, and the extension unit 430 on the left side of the center disc 420 extends in an arc shape in the counterclockwise direction, that is, extends in an arc shape downward from the center disc 420 to the outside. Therefore, the upward arc-shaped blade edge on the left side of the blade shaft 520 is opposite to the arc-shaped downward extension unit 430, so that the grass is pressed into the deep part of the guide groove 410 while the blade 530 quickly cuts the grass, thereby improving the mowing efficiency. In addition, the blade 530 of the cutting assembly 500 cuts from the opening end 411 of the guide groove 410 toward the closed end 412, which can prevent the grass in the guide groove 410 from coming out of the guide groove 410, and press and cut the grass in the guide groove 410, thereby improving the mowing efficiency.

[0336] Optionally, referring to Figures 10-12 , the rotating front side of the blade 510 has a blade 530. One side of the blade 510 with the blade 530 is opposite to the rotating front side of the protection assembly 400. That is, the rotating front side of the blade 510 is opposite to the rotating front side of the protection assembly 400, so that the grass is pressed into the deep part of the guide groove 410 while the blade 530 quickly cuts the grass, thereby improving the mowing efficiency.

[0337] Optionally, referring to Figure 7 , the blade 530 is arc-shaped. The protection assembly 400 includes at least one extension unit 430 that is arc-shaped. The arc-shaped blade edge of the blade 530 is opposite to the arc-shaped opening of the extension unit 430.

[0338] For example, the protection assembly 400 rotates in the counterclockwise direction, and the cutting assembly 500 rotates in the clockwise direction. The arc-shaped blade edge of the blade 530 on the left side of the blade shaft 520 faces upward, and the extension unit 430 on the left side of the center disc 420 extends in an arc shape in the counterclockwise direction, that is, extends in an arc shape downward from the center disc 420 to the outside. Therefore, the upward arc-shaped blade edge on the left side of the blade shaft 520 is opposite to the arc-shaped downward extension unit 430, so that the grass is pressed into the deep part of the guide groove 410 while the blade 530 quickly cuts the grass, thereby improving the mowing efficiency. In addition, the blade 530 of the cutting assembly 500 cuts from the opening end 411 of the guide groove 410 toward the closed end 412, which can prevent the grass in the guide groove 410 from coming out of the guide groove 410, and press and cut the grass in the guide groove 410, thereby improving the mowing efficiency.

[0339] The arc-shaped blade edge of the blade 530 on the right side of the blade shaft 520 faces downward, and the extension unit 430 on the right side of the center disc 420 extends in an arc shape in the counterclockwise direction, that is, extends in an arc shape upward from the center disc 420 to the outside. The downward arc-shaped blade edge on the right side of the blade shaft 520 is opposite to the arc-shaped upward extension unit 430, so that the grass is pressed into the deep part of the guide groove 410 while the blade 530 quickly cuts the grass, thereby improving the mowing efficiency.

[0340] Optionally, referring to Figure 13The cutting mechanism 200 further comprises a connecting bearing 710. The connecting bearing 710 comprises a first bearing ring 711 and a second bearing ring 712 which are sleeved and rotatable relative to each other. The first bearing ring 711 is connected to the cutting assembly 500. Further, the first bearing ring 711 is sleeved on the outer periphery of the blade shaft 520. The second bearing ring 712 is connected to the protection assembly 400. Further, the outer periphery of the second bearing ring 712 is connected to the inner periphery of the protection assembly 400.

[0341] The embodiment sets the connecting bearing 710, the connecting bearing 710 comprises a first bearing ring 711 and a second bearing ring 712 which are sleeved and rotatable relative to each other, the first bearing ring 711 is sleeved on the outer periphery of the blade shaft 520, and the outer periphery of the second bearing ring 712 is connected to the inner periphery of the protection assembly 400. The first bearing ring 711 and the second bearing ring 712 can move independently of each other, so that the cutting assembly 500 and the protection assembly 400 can move independently of each other, which is beneficial to the opposite rotation direction of the cutting assembly 500 and the protection assembly 400 or the rotation speed of the cutting assembly 500 being greater than that of the protection assembly 400.

[0342] Please refer to Figure 22 , Figure 27 and Figure 27 , the cutting mechanism 200 provided by the fourth embodiment of the present application comprises a protection assembly 400, a cutting assembly 500, a first driving assembly 610 and a second driving assembly 620.

[0343] Please refer to Figure 27 , the protection assembly 400 comprises a first center disc 421 and a plurality of first extension units 433 which are arranged around the outer periphery of the first center disc 421. At least part of the guide-in groove 410 is formed between two adjacent first extension units 433.

[0344] Specifically, the protection assembly 400 comprises a first cover body 451 and a second cover body 452. The first cover body 451 and the second cover body 452 are overlapped along the height direction and enclose a containing cavity 440.

[0345] Please refer to Figure 10 , the first cover body 451 comprises a first center disc 421 and a plurality of first extension units 433 which are arranged around the outer periphery of the first center disc 421. A first sub-guide-in groove 413 (part of the guide-in groove 410) is formed between two adjacent first extension units 433.

[0346] Please refer to Figure 12The second cover body 452 comprises a second central disc 422 and a plurality of second extension units 434 surrounding the outer periphery of the second central disc 422. A second sub-guide slot 414 (part of the guide slot 410) is formed between two adjacent second extension units 434. The first sub-guide slot 413 and the second sub-guide slot 414 are aligned and communicated in the height direction to form the guide slot 410.

[0347] The accommodation cavity 440 is communicated with the guide slot 410.

[0348] Please refer to Figure 27 , Figure 10 and Figure 12 The guide slot 410 extends from the outer periphery of the protection assembly 400 to the side where the center of the protection assembly 400 is located, so as to facilitate the rolling of the grass on the periphery into the guide slot 410 during the rotation of the protection assembly 400.

[0349] Please refer to Figure 27 , Figure 10 and Figure 12 The cutting assembly 500 is arranged within the protection range S1 of the protection assembly 400. The cutting assembly 500 is arranged within the protection range S1 of the protection assembly 400. The protection range S1 of the protection assembly 400 refers to the orthographic projection range of the protection assembly 400 in the height direction. In this embodiment, the protection assembly 400 protects the cutting assembly 500 from being exposed.

[0350] Please refer to Figure 27 , Figure 10 and Figure 12 At least part of the guide slot 410 is located within the cutting range S2 of the cutting assembly 500, so that the grass entering the guide slot 410 can enter the cutting range S2 of the cutting assembly 500 and be cut by the cutting assembly 500. The cutting range S2 is the rotation range formed by the rotation of the cutting assembly 500.

[0351] Specifically, please refer to Figure 27 , Figure 22 and Figure 22 The cutting assembly 500 is arranged within the accommodation cavity 440, so that the protection assembly 400 protects the periphery of the cutting assembly 500. The protection assembly 400 can protect the cutting assembly 500 from the horizontal direction and the vertical direction (height direction).

[0352] Please refer to Figure 28The second driving assembly 620 is connected to the protection assembly 400, and the second driving assembly 620 is used to drive the protection assembly 400 to rotate. During the rotation of the protection assembly 400, the grass outside the fuselage body 100 continuously enters the cutting range S2 close to the cutting assembly 500 along the guide groove 410.

[0353] Please refer to Figure 29 The first driving assembly 610 is connected to the cutting assembly 500, and the first driving assembly 610 is used to drive the cutting assembly 500 to rotate. After the grass continuously enters the cutting range S2 close to the cutting assembly 500 along the guide groove 410, the grass is cut by the cutting assembly 500 to rotate, so as to trim the grass outside the fuselage body 100, avoid leaving a blind area of mowing, and improve the mowing effect.

[0354] The protection assembly 400 and the cutting assembly 500 are driven by different driving assemblies 600, respectively, so that the rotation speed of the protection assembly 400 and the rotation speed of the cutting assembly 500 are independent of each other, the protection assembly 400 and the cutting assembly 500 are relatively rotated, the grass is quickly mowed, and the mowing effect is improved; the rotation direction of the protection assembly 400 and the rotation direction of the cutting assembly 500 are independent of each other, the rotation direction of the protection assembly 400 and the rotation direction of the cutting assembly 500 can be opposite, the blade 530 of the cutting assembly 500 cuts from the opening end 411 of the guide groove 410 to the closed end 412, which can prevent the grass in the guide groove 410 from coming out of the guide groove 410, and the grass in the guide groove 410 is pressed and cut, and the mowing efficiency is improved.

[0355] The application designs a cutting mechanism 200 including a protection assembly 400, a cutting assembly 500, a first driving assembly 610 and a second driving assembly 620. The protection assembly 400 includes a first center disc 421 and a plurality of first extension units 433 surrounding the outer periphery of the first center disc 421. At least part of an introduction groove 410 is formed between two adjacent first extension units 433. The introduction groove 410 extends from the outer periphery of the protection assembly 400 to the side where the center of the protection assembly 400 is located, so as to roll the grass on the outer periphery into the introduction groove 410 during the rotation of the protection assembly 400. The cutting assembly 500 is arranged in the protection range S1 of the protection assembly 400, so as to avoid the exposure of the cutting assembly 500. At least part of the introduction groove 410 is located in the cutting range S2 of the cutting assembly 500, so as to enable the grass entering the introduction groove 410 to enter the cutting range S2 of the cutting assembly 500 and be cut by the cutting assembly 500. The second driving assembly 620 is connected with the protection assembly 400, and is used for driving the rotation of the protection assembly 400. During the rotation of the protection assembly 400, the grass located on the outer side of the fuselage main body 100 is continuously rolled along the introduction groove 410 into the cutting range S2 close to the cutting assembly 500. The first driving assembly 610 is connected with the cutting assembly 500, and is used for driving the rotation of the cutting assembly 500. During the continuous rolling of the grass along the introduction groove 410 into the cutting range S2 close to the cutting assembly 500 and the rotation cutting of the cutting assembly 500, the edge of the grass located on the outer side of the fuselage main body 100 is cut, so as to avoid the blind area of cutting the grass and improve the cutting effect.

[0356] Please refer to Figure 22 and Figure 28 . The first center disc 421 has a first through hole 423. The first through hole 423 is located at the center of the first center disc 421 and extends along the height direction. The first through hole 423 is connected with the above-mentioned accommodating cavity 440.

[0357] Please refer to Figure 29 , Figure 2 and Figure 28 . The first driving assembly 610 includes a first motor 611. The output end of the first motor 611 is connected with the cutting assembly 500 through the first through hole 423.

[0358] Further, the blade shaft 520 of the cutting assembly 500 corresponds to the center of the first through hole 423. Further, the output end of the first motor 611 is inserted into the inner cavity of the blade shaft 520. The inner cavity of the blade shaft 520 is a non-circular hole, so that the blade shaft 520 and the output end of the first motor 611 rotate synchronously in the rotation direction. Further, the first motor 611 drives the rotation of the cutting assembly 500.

[0359] Optionally, please refer toFigure 29 、 Figure 28 and Figure 29 The cutting mechanism 200 further includes a transmission assembly 220. The transmission assembly 220 includes, but is not limited to, transmission structures such as gears and conveyor belts. Furthermore, the transmission assembly 220 can be a reduction transmission assembly, using a reducer structure for transmission, so that the rotational speed of the protection assembly 400 is lower than the rotational speed of the cutting assembly 500. Furthermore, the transmission assembly 220 can use a planetary gear reducer, a single-stage, two-stage, or even multi-stage planetary gear reducer. The input and output of the planetary gear reducer can be coaxial, that is, the protection assembly 400 and the cutting assembly 500 are coaxial.

[0360] The second driving assembly 620 is connected to the protection assembly 400 through the transmission assembly 220 to drive the protection assembly 400 to rotate.

[0361] Optional, see Figure 28 and Figure 29 , the transmission assembly 220 includes a first gear 221. The first gear 221 and the first center disk 421 are axially arranged. The first gear 221 has a second through hole 222. The second through hole 222 is connected to the first through hole 423. Specifically, the first gear 221 and the first center disk 421 are an integral structure, and the first gear 221 is connected to the first center disk 421 in the height direction. The second through hole 222 of the first gear 221 and the first through hole 423 of the first center disk 421 may have the same aperture and are connected in the height direction. The outer peripheral wall of the first gear 221 is provided with tooth patterns.

[0362] See also Figure 2 and Figure 28 , the second driving component 620 includes a second motor 621 and a second gear 622. The second gear 622 is meshed with the first gear 221. The second motor 621 is arranged adjacent to the first motor 611. Specifically, the outer peripheral wall of the second gear 622 is provided with teeth, and the second gear 622 is located on one side of the horizontal direction of the first gear 221. The teeth on the outer peripheral wall of the second gear 622 are meshed with the teeth on the outer peripheral wall of the first gear 221. The second motor 621 is located on one side of the horizontal direction of the first motor 611. The output shaft of the second motor 621 is coaxially connected to the center of the second gear 622, and the second motor 621 is used to drive the second gear 622 to rotate. The rotation of the second gear 622 drives the first gear 221 to rotate, that is, drives the protection component 400 to rotate.

[0363] Further, the second gear 622 is at least partially located in the area where the extension unit 430 is located in the axial direction (height direction). In this way, the second gear 622 is arranged in the height direction on the extension unit 430, and does not occupy a large space in the horizontal plane. The gear radius of the second gear 622 is smaller than the gear radius of the first gear 221. In this way, the second motor 621 is transmitted to the first gear 221 with a large radius through the second gear 622 with a small radius, thereby achieving a speed reduction effect, and further controlling the rotation speed of the protection assembly 400 to be relatively small.

[0364] Please refer to Figure 29 、 Figure 28 and Figure 29 , the cutting mechanism 200 further comprises a receiving shell 230, a first bearing 235 and a second bearing 236.

[0365] The receiving shell 230 is the aforementioned support body 211. The receiving shell 230 is used to accommodate the first drive assembly 610, the second drive assembly 620 and the transmission assembly 220. One end of the receiving shell 230 in the height direction is an open end, and the other end is a closed end. The open end of the receiving shell 230 faces the protection assembly 400 and is assembled and connected with the protection assembly 400.

[0366] Please refer to Figure 28 and Figure 29 , the main body part of the receiving shell 230 is a first cylinder 231 and a second cylinder 232 arranged in parallel in the horizontal plane. The first cylinder 231 is used to accommodate the first motor 611 of the first drive assembly 610. The second cylinder 232 is used to accommodate the second motor 621 of the second drive assembly 620. The first motor 611 and the second motor 621 are respectively assembled into the first cylinder 231 and the second cylinder 232 from the top. The first motor 611 abuts and is fixed to the bottom of the first cylinder 231, and the second motor 621 abuts and is fixed to the bottom of the second cylinder 232. The top of the first cylinder 231 and the second cylinder 232 is closed by a cover.

[0367] The bottom of the first cylinder 231 and the second cylinder 232 has an opening, so that the output shaft of the first motor 611 extends out of the opening and is fixed to the blade shaft 520 of the cutting assembly 500, and the output shaft of the second motor 621 extends out of the opening and is fixed to the center of the second gear 622.

[0368] Please refer to Figure 28 and Figure 29The end of the housing 230 facing the protective assembly 400 includes a first assembly ring 233 and a second assembly ring 234. The first assembly ring 233 is protruded from the end of the first cylinder 231 facing the protective assembly 400, and the second assembly ring 234 is protruded from the end of the entire housing 230 facing the protective assembly 400. The second assembly ring 234 is arranged around the outer circumference of the first assembly ring 233.

[0369] See also Figure 28 and Figure 29 , the first assembly ring 233 is arranged in the second through hole 222. The first gear 221 is arranged in the gap between the first assembly ring 233 and the second assembly ring 234. The inner wall of the first gear 221 (the hole wall of the second through hole 222) is spaced apart from the outer wall of the first assembly ring 233. The first bearing 235 is annular. The first bearing 235 is arranged in the gap between the first gear 221 and the first assembly ring 233. The outer wall of the first bearing 235 is connected to the inner wall of the second through hole 222. The inner wall of the first bearing 235 is connected to the outer wall of the first assembly ring 233. The first part of the first bearing 235 is fixedly connected to the first gear 221, and the second part of the first bearing 235 is fixedly connected to the first assembly ring 233. The first part and the second part of the first bearing 235 can rotate relative to each other, so that the first gear 221 is assembled and connected to the containing shell 230 and the first gear 221 can rotate relative to the containing shell 230.

[0370] See also Figure 28 and Figure 29 The second assembly ring 234 is located on the outer periphery of the first center disk 421. A portion of the second assembly ring 234 is located on the side of the second gear 622 away from the second motor 621, playing a sealing and shielding role.

[0371] See also Figures 27-29 and Figures 27-29 The outer wall of the second bearing 236 is connected to the inner wall of the second mounting ring 234. The inner wall of the second bearing 236 is connected to the outer wall of the first center disk 421. The first portion of the second bearing 236 is fixedly connected to the first center disk 421, and the second portion of the second bearing 236 is fixedly connected to the second mounting ring 234. The first and second portions of the second bearing 236 are able to rotate relative to each other, allowing the protective assembly 400 to be assembled and connected to the containment shell 230 while also being able to rotate relative to the containment shell 230.

[0372] Optional, see Figures 27-29The protection assembly 400 further comprises a second cover 452 as previously described. The second cover 452 comprises a second center disc 422 and a plurality of second extension units 434 surrounding the outer periphery of the second center disc 422. The second center disc 422 is opposite to and spaced apart from the first center disc 421. The first center disc 421 and the second center disc 422 are respectively located on the upper and lower sides of the accommodation cavity 440.

[0373] Each of the second extension units 434 is opposite to and spaced apart from one of the first extension units 433.

[0374] Referring to Figure 11 The second part of the cutting assembly 500 is located in the gap in the height direction between the first center disc 421 and the second center disc 422. The second part of the cutting assembly 500 is located in the gap in the height direction between the first extension unit 433 and the second extension unit 434. The gap in the horizontal plane between two adjacent second extension units 434 forms at least part of the guide slot 410 (second sub-guide slot 414).

[0375] Optionally, referring to Figure 12 The second center disc 422 has a third through hole 424 arranged in the height direction. The cutting mechanism 200 further comprises a connecting bearing 710.

[0376] Referring to Figure 12 and Figure 30 The cutting assembly 500 comprises a blade 510 and a blade shaft 520. The blade shaft 520 penetrates the end or middle of the blade 510. One end of the blade shaft 520 is coaxially connected with the output shaft of the first motor 611. The other end of the blade shaft 520 is connected to the inner wall of the third through hole 424 through the connecting bearing 710.

[0377] Referring to Figure 27 The connecting bearing 710 comprises a first shaft ring 711 and a second shaft ring 712 which are coaxially arranged and can rotate relative to each other. The first shaft ring 711 is connected to the blade shaft 520 of the cutting assembly 500. Further, the first shaft ring 711 is coaxially arranged on the outer periphery of the blade shaft 520. The second shaft ring 712 is connected to the inner wall of the third through hole 424 of the protection assembly 400. Further, the outer periphery of the second shaft ring 712 is connected to the inner wall of the third through hole 424 of the protection assembly 400.

[0378] The present embodiment sets the connecting bearing 710, which comprises the first shaft ring 711 and the second shaft ring 712 that are sleeved and rotatable relative to each other, the first shaft ring 711 is sleeved on the outer periphery of the blade shaft 520, and the outer periphery of the second shaft ring 712 is connected to the inner wall of the third through hole 424 of the protection assembly 400, wherein the first shaft ring 711 and the second shaft ring 712 can move independently of each other, so that the cutting assembly 500 and the protection assembly 400 can move independently of each other, which is conducive to the opposite rotation direction of the cutting assembly 500 and the protection assembly 400 or the rotation speed of the cutting assembly 500 being greater than that of the protection assembly 400.

[0379] The connecting bearing 710, the second cover body 452 and the blade shaft 520 are fixedly connected in the height direction by screws at the bottom of the second cover body 452.

[0380] Optionally, the transmission assembly 220 further comprises a third gear (not shown). The third gear is engagedly connected between the second gear 622 and the first gear 221. The rotation direction of the protection assembly 400 is the same as that of the cutting assembly 500.

[0381] In other embodiments, the transmission assembly 220 does not comprise a third gear, the second gear 622 and the first gear 221 are directly engagedly connected, and the rotation direction of the protection assembly 400 is opposite to that of the cutting assembly 500.

[0382] Please refer to Figure 10 The cutting mechanism 200 provided by the fifth embodiment of the present application comprises a protection assembly 400, a cutting assembly 500 and a driving assembly 600.

[0383] Please refer to Figure 27 The protection assembly 400 comprises a first center disc 421 and a plurality of first extension units 433 surrounding the outer periphery of the first center disc 421. At least part of the lead-in groove 410 is formed between two adjacent first extension units 433. The lead-in groove 410 extends from the outer periphery of the protection assembly 400 to the side where the center of the protection assembly 400 is located.

[0384] Please refer to Figure 12 The cutting assembly 500 is arranged within the protection range S1 of the protection assembly 400. Part of the lead-in groove 410 is located within the cutting range S2 of the cutting assembly 500.

[0385] Specifically, please refer to Figure 27 and Figure 12 The protection assembly 400 comprises a first cover body 451 and a second cover body 452, and the first cover body 451 and the second cover body 452 are overlapped and enclosed along the height direction to form an accommodation cavity 440.

[0386] Referring to Figure 27 and Figure 12 , the first cover body 451 comprises a first center disc 421 and a plurality of first extension units 433 surrounding the periphery of the first center disc 421. A first sub-guide slot 413 (part of the guide slot 410) is formed between two adjacent first extension units 433.

[0387] Referring to Figure 27 and Figure 12 , the second cover body 452 comprises a second center disc 422 and a plurality of second extension units 434 surrounding the periphery of the second center disc 422. A second sub-guide slot 414 (part of the guide slot 410) is formed between two adjacent second extension units 434. The first sub-guide slot 413 and the second sub-guide slot 414 are aligned and communicated in the height direction to form the guide slot 410.

[0388] Referring to Figure 10 and Figure 10 , the accommodation cavity 440 is communicated with the guide slot 410.

[0389] The guide slot 410 extends from the periphery of the protection assembly 400 towards the side where the center of the protection assembly 400 is located, so as to facilitate the rolling of the grass on the periphery into the guide slot 410 during the rotation of the protection assembly 400.

[0390] Referring to Figure 12 , the cutting assembly 500 is arranged within the protection range S1 of the protection assembly 400. The cutting assembly 500 is arranged within the protection range S1 of the protection assembly 400. The protection range S1 of the protection assembly 400 refers to the orthographic projection range of the protection assembly 400 in the height direction. In this embodiment, the protection assembly 400 protects the cutting assembly 500 from being exposed.

[0391] Referring to Figures 31-35 , at least part of the guide slot 410 is located within the cutting range S2 of the cutting assembly 500, so that the grass entering the guide slot 410 can enter the cutting range S2 of the cutting assembly 500 and be cut by the cutting assembly 500. The cutting range S2 is the rotation range formed by the rotation of the cutting assembly 500.

[0392] Specifically, referring to Figures 31-35 , the cutting assembly 500 is arranged within the accommodation cavity 440, so that the protection assembly 400 protects the cutting assembly 500 from the periphery. The protection assembly 400 can protect the cutting assembly 500 from both the horizontal direction and the vertical direction (height direction).

[0393] Referring toFigure 27 The driving assembly 600 is connected to the protection assembly 400 and the cutting assembly 500. The driving assembly 600 is used to drive the rotation of the protection assembly 400 and the cutting assembly 500. The protection assembly 400 makes the grass outside the main body 100 continuously enter the cutting range S2 of the cutting assembly 500 along the guide groove 410 during the rotation. The grass continuously enters the cutting range S2 of the cutting assembly 500 along the guide groove 410 and is cut by the cutting assembly 500, so as to trim the grass outside the main body 100, thereby avoiding leaving a blind area of mowing and improving the mowing effect.

[0394] The protection assembly 400 and the cutting assembly 500 are driven by the same driving assembly 600, which can reduce the number of driving assemblies 600 and the space occupied by the driving assemblies 600, simplify the structure, save costs and reduce the weight.

[0395] The cutting mechanism 200 includes the protection assembly 400, the cutting assembly 500 and the driving assembly 600. The protection assembly 400 includes the first central disc 421 and a plurality of first extension units 433 surrounding the outer circumferential side of the first central disc 421. Adjacent two first extension units 433 form at least part of the guide groove 410. The guide groove 410 extends from the outer circumferential side of the protection assembly 400 to the side where the center of the protection assembly 400 is located, so as to facilitate the grass on the circumferential side to be rolled into the guide groove 410 during the rotation of the protection assembly 400. The cutting assembly 500 is arranged in the protection range S1 of the protection assembly 400, so as to avoid the exposure of the cutting assembly 500. At least part of the guide groove 410 is located in the cutting range S2 of the cutting assembly 500, so as to facilitate the grass entering the guide groove 410 to enter the cutting range S2 of the cutting assembly 500 and be cut by the cutting assembly 500. The driving assembly 600 is connected to the protection assembly 400 and is used to drive the rotation of the protection assembly 400. The protection assembly 400 makes the grass outside the main body 100 continuously enter the cutting range S2 of the cutting assembly 500 along the guide groove 410 during the rotation. The driving assembly 600 is also connected to the cutting assembly 500 and is used to drive the rotation of the cutting assembly 500. The grass continuously enters the cutting range S2 of the cutting assembly 500 along the guide groove 410 and is cut by the cutting assembly 500, so as to trim the grass outside the main body 100, thereby avoiding leaving a blind area of mowing and improving the mowing effect.

[0396] Please refer to Figures 31-35 The first central disc 421 has a first through hole 423. The first through hole 423 is located at the center of the first central disc 421 and extends along the height direction. The first through hole 423 communicates with the accommodation cavity 440.

[0397] The driving assembly 600 includes a first motor 611 . An output end of the first motor 611 is connected to the cutting assembly 500 via the first through hole 423 .

[0398] See also Figures 31-35 、 Figure 2 Furthermore, the blade shaft 520 of the cutting assembly 500 corresponds to the center position of the first through hole 423. Furthermore, the output end of the first motor 611 is inserted into the inner cavity of the blade shaft 520 of the cutting assembly 500. The inner cavity of the blade shaft 520 is a non-circular hole, so that the blade shaft 520 and the output end of the first motor 611 rotate synchronously in the rotation direction. Consequently, the first motor 611 drives the cutting assembly 500 to rotate.

[0399] Optionally, the cutting mechanism 200 further includes a transmission assembly 220. The transmission assembly 220 includes, but is not limited to, transmission structures such as gears and conveyor belts. Furthermore, the transmission assembly 220 can be a reduction transmission assembly, employing a reducer structure for transmission, such that the rotational speed of the protection assembly 400 is lower than the rotational speed of the cutting assembly 500. Furthermore, the transmission assembly 220 can employ a planetary gear reducer, either a single-stage, two-stage, or even multi-stage planetary gear reducer. The input and output of the planetary gear reducer can be coaxial, ie, the protection assembly 400 and the cutting assembly 500 are coaxial.

[0400] The second driving assembly 620 is connected to the protection assembly 400 through the transmission assembly 220 to drive the protection assembly 400 to rotate.

[0401] Optional, see Figure 31 The inner wall of the first through hole 423 is provided with a ring gear 425. The transmission assembly 220 further includes a drive gear 224 and at least one first transmission gear 225. The drive gear 224 is located within the first through hole 423. The drive gear 224 is coaxially connected to the output shaft of the first motor 611. The first transmission gear 225 is located within the first through hole 423. The first transmission gear 225 meshes with the ring gear 425. The first transmission gear 225 meshes with the drive teeth.

[0402] The first motor 611 is used to drive the driving gear 224 to rotate, thereby driving the first transmission gear 225 to rotate, and finally driving the protection assembly 400 to rotate.

[0403] The number of the first transmission gears 225 is odd, so that the protection assembly 400 and the cutting assembly 500 rotate in the same direction. The number of the first transmission gears 225 is even, so that the protection assembly 400 and the cutting assembly 500 rotate in opposite directions.

[0404] The inner wall of the first through hole 423 has a large radius of the gear ring 425, so the rotating speed of the protection assembly 400 is less than the rotating speed of the cutting assembly 500.

[0405] Optionally, referring to Figure 31 and Figure 31 , the cutting mechanism 200 further comprises a receiving shell 230 and a first bearing 235. The receiving shell 230 is used for receiving the first motor 611.

[0406] The receiving shell 230 is the aforementioned bracket body 211. The receiving shell 230 is used for receiving the driving assembly 600 and the transmission assembly 220. The receiving shell 230 has an open end at one end along the height direction and a closed end at the other end. The open end of the receiving shell 230 faces the protection assembly 400 and is assembled and connected with the protection assembly 400.

[0407] Referring to Figure 27 , the main body part of the receiving shell 230 is a first cylinder 231 arranged in parallel in the horizontal plane. The first cylinder 231 is used for receiving the first motor 611 of the driving assembly 600. The first motor 611 is loaded into the first cylinder 231 from the top, and the first motor 611 abuts and is fixed to the bottom of the first cylinder 231, and the top of the first cylinder 231 is closed by a cover.

[0408] The bottom of the first cylinder 231 has an opening so that the output shaft of the first motor 611 extends out of the opening and is fixed to the blade shaft 520 of the cutting assembly 500.

[0409] Referring to Figure 12 , the receiving shell 230 comprises a first assembly ring 233. The first assembly ring 233 is protruded at one end of the first cylinder 231 facing the protection assembly 400, and the first assembly ring 233 is located at the outer periphery of the first center disc 421. The outer wall of the first bearing 235 is connected to the inner wall of the first assembly ring 233. The inner wall of the first bearing 235 is connected to the outer wall of the first center disc 421.

[0410] The first bearing 235 is annular. The first bearing 235 is arranged in the gap between the outer periphery of the first center disc 421 and the inner periphery of the first assembly ring 233. The outer wall of the first bearing 235 is connected to the inner periphery of the first assembly ring 233. The inner wall of the first bearing 235 is connected to the outer periphery of the first center disc 421. The first part of the first bearing 235 is fixedly connected with the first center disc 421, and the second part of the first bearing 235 is fixedly connected with the first assembly ring 233. The first part and the second part of the first bearing 235 can rotate relative to each other, so that the first center disc 421 and the receiving shell 230 are assembled and connected, and at the same time the protection assembly 400 can rotate relative to the receiving shell 230.

[0411] Optionally, please refer to Figure 27 The protection assembly 400 further comprises a second cover 452 as aforementioned. The second cover 452 comprises a second center disc 422 and a plurality of second extension units 434 surrounding the outer periphery of the second center disc 422. The second center disc 422 is opposite to the first center disc 421 and is spaced apart from the first center disc 421. The first center disc 421 and the second center disc 422 are respectively located on the upper and lower sides of the accommodation cavity 440.

[0412] Each of the second extension units 434 is opposite to one of the first extension units 433 and is spaced apart from the first extension unit 433.

[0413] A portion of the cutting assembly 500 is located in the gap in the height direction between the first center disc 421 and the second center disc 422. A second portion of the cutting assembly 500 is located in the gap in the height direction between the first extension unit 433 and the second extension unit 434. The gap between two adjacent second extension units 434 forms at least a portion of the guide-in slot 410 (a second sub-guide-in slot 414).

[0414] Optionally, please refer to Figures 10-12 、 Figures 10-12 The second center disc 422 has a third through hole 424. The cutting mechanism 200 further comprises a connecting bearing 710.

[0415] Please refer to Figures 10-12 The cutting assembly 500 comprises a blade 510 and a blade shaft 520. The blade shaft 520 is connected to the end or middle portion of the blade 510. One end of the blade shaft 520 is coaxially connected to the output shaft of the driving motor. The other end of the blade shaft 520 is connected to the inner wall of the third through hole 424 through the connecting bearing 710.

[0416] Please refer to Figure 27 The connecting bearing 710 comprises a first shaft ring 711 and a second shaft ring 712 which are coaxially arranged and can rotate relative to each other. The first shaft ring 711 is connected to the blade shaft 520 of the cutting assembly 500. Further, the first shaft ring 711 is coaxially arranged on the outer periphery of the blade shaft 520. The second shaft ring 712 is connected to the inner wall of the third through hole 424 of the protection assembly 400. Further, the outer periphery of the second shaft ring 712 is connected to the inner wall of the third through hole 424 of the protection assembly 400.

[0417] The embodiment sets the connecting bearing 710, which comprises the first shaft ring 711 and the second shaft ring 712 that are sleeved and rotatable relative to each other, the first shaft ring 711 is sleeved on the outer periphery of the blade shaft 520, and the outer periphery of the second shaft ring 712 is connected to the inner wall of the third through hole 424 of the protection assembly 400, wherein the first shaft ring 711 and the second shaft ring 712 can move independently of each other, so that the cutting assembly 500 and the protection assembly 400 can move independently of each other, which is beneficial to the opposite rotation direction of the cutting assembly 500 and the protection assembly 400 or the rotation speed of the cutting assembly 500 being greater than that of the protection assembly 400.

[0418] The connecting bearing 710, the second cover body 452 and the blade shaft 520 are fixedly connected in the height direction through the screw at the bottom of the second cover body 452.

[0419] Optionally, the rotation speed of the protection assembly 400 is less than that of the cutting assembly 500, that is, the rotation speed of the cutting assembly 500 is greater than that of the protection assembly 400. In this way, the cutting assembly 500 can rotate relative to the protection assembly 400 at a greater relative speed, so that the grass in the guide-in groove 410 of the protection assembly 400 is cut by the cutting assembly 500 at a greater relative speed, thereby improving the cutting efficiency of the grass cutting.

[0420] Optionally, the rotation direction of the protection assembly 400 is opposite to that of the cutting assembly 500, that is, the grass in the guide-in groove 410 rotates towards the cutting side of the cutting assembly 500 along with the protection assembly 400, one side of the grass in the guide-in groove 410 is subjected to the rotation pushing force of the protection assembly 400, and the other side is subjected to the rotation cutting force of the cutting assembly 500, so that the grass in the guide-in groove 410 is clamped on both sides by the protection assembly 400 and the cutting assembly 500 and is quickly cut by the cutting assembly 500, thereby improving the cutting efficiency of the grass cutting.

[0421] Optionally, the transmission assembly 220 further comprises a second transmission gear (not shown). The second transmission gear is engagedly connected between the first transmission gear 225 and the gear ring 425. The rotation direction of the protection assembly 400 is the same as that of the cutting assembly 500. Based on the aforementioned rotation speed of the cutting assembly 500 being greater than that of the protection assembly 400, the cutting assembly 500 can rotate relative to the protection assembly 400 at a greater relative speed, so that the grass in the guide-in groove 410 of the protection assembly 400 is cut by the cutting assembly 500 at a greater relative speed, thereby improving the cutting efficiency of the grass cutting.

[0422] Optionally, please refer to Figures 10-12 , Figures 10-12The extension trajectory of each first extension unit 433 is an arc trajectory. Further, the second extension unit 434 and the first extension unit 433 are mirror structures.

[0423] The arc extension trajectory of the first extension unit 433 is related to the rotation direction of the protection assembly 400. For example, when the rotation direction of the protection assembly 400 is counterclockwise, the extension trajectory of each first extension unit 433 is inclined to extend in an arc line in the counterclockwise direction. For example, when the rotation direction of the protection assembly 400 is clockwise, the extension trajectory of each first extension unit 433 is inclined to extend in an arc line in the clockwise direction.

[0424] In the embodiment, by setting the extension direction of each first extension unit 433 to intersect with the radial direction of the first central disc 421, and the extension trajectory of each first extension unit 433 to be inclined to extend in an arc line in the rotation direction of the protection assembly 400, the first extension unit 433 can not only roll the grass outside into the cutting range S2 of the cutting assembly 500 and bind it, but also block the grass in the cutting range S2 from going out of the guide groove 410, avoiding the centrifugal phenomenon to cause the grass in the guide groove 410 to be thrown out, and improving the grass feeding rate (in the guide groove 410) and the grass binding rate (the probability of the grass in the guide groove 410 being bound and not going out) during the rotation of the protection assembly 400.

[0425] In other embodiments, the extension trajectory of each first extension unit 433 is a straight line trajectory.

[0426] Optionally, please refer to Figures 10-12 Each first extension unit 433 comprises a connecting end 431 and an extension end 432 arranged oppositely. The connecting end 431 and the extension end 432 are two ends in the extension direction thereof. The connecting end 431 is connected to the first central disc 421. Further, the connecting end 431 and the first central disc 421 are interconnected as a whole.

[0427] The width of the extension end 432 is smaller than the width of the connecting end 431. The width of the extension end 432 is smaller, for example, the extension end 432 is a pointed end, so that the opening end 411 of the guide groove 410 has a larger width. On the other hand, by setting the width of the extension end 432 to be small, the pushing action surface of the extension end 432 on the grass around the side is small, and the extension end 432 is easier to insert into the gap of the grass, and then guide the grass into the guide groove 410.

[0428] In other embodiments, the width of the first extension unit 433 in the extension direction thereof can be relatively uniform.

[0429] The pointed end of the extension end 432 of each first extension unit 433 is located on the circumscribed circle of the protection assembly 400.

[0430] Optionally, referring to Figure 26 , the circumferential center of the plurality of extension ends 432 coincides with the center of the first central disc 421.

[0431] Wherein, the circumferential center of the plurality of extension ends 432 is the center of the circumscribed circle of the tip point of the extension end 432 of each first extension unit 433. The center of the first central disc 421 is the center of the disc of the first central disc 421. The center of the protection assembly 400 is collinear with the center of the first central disc 421.

[0432] Further, referring to Figures 10-12 , the rotation shaft 811 (see Figures 10-12 ) of the cutting assembly 500 can be arranged at the center of the cutting assembly 500, and can also correspond to the center of the first central disc 421, so that the cutting assembly 500 is coaxially arranged with the protection assembly 400. When the cutting range S2 of the cutting assembly 500 is a circular region, the protection range S1 of the protection assembly 400 is also a circular region, and the cutting range S2 and the protection range S1 are two concentric circles. Wherein, the circular radius of the protection range S1 is greater than the circular radius of the cutting range S2.

[0433] Optionally, referring to Figures 10-12 , the cutting assembly 500 includes at least one blade 510 and a blade shaft 520. The number of blades 510 is one or more. In this embodiment, the blade 510 can be arranged along the diameter of the cutting range S2. In other embodiments, the blade 510 can be arranged along the radius of the cutting range S2. In this embodiment, the number of blades 510 is one.

[0434] The middle or end of the blade 510 has an axle hole. The blade shaft 520 penetrates the axle hole.

[0435] Optionally, the blade shaft 520 is arranged through the blade 510. When the blade 510 is arranged along the diameter of the cutting range S2, the blade shaft 520 is arranged through the central position (middle) of the blade 510. When the blade 510 is arranged along the radius of the cutting range S2, the blade shaft 520 is arranged through the end of the blade 510.

[0436] When the cutting assembly 500 rotates, the driving assembly 600 connects the blade shaft 520. The driving assembly 600 is used to drive the blade 510 to rotate through the blade shaft 520.

[0437] The blade shaft 520 is the rotation shaft 811 of the aforementioned cutting assembly 500. For example, the driving assembly 600 includes a motor and a motor output shaft. The blade shaft 520 is connected with the motor output shaft in the axial direction, and the motor output shaft rotates to drive the blade shaft 520 to rotate, thereby driving the blade 510 to rotate.

[0438] Please refer to Figures 10-12 , at least one side of the blade 510 has a cutting edge 530. Specifically, the rotation direction side of the blade 510 has a cutting edge 530. In this embodiment, the blade 510 is arranged along the diameter of the cutting range S2, and the blade 510 is provided with two cutting edges 530, which are respectively arranged on the radial two sides of the blade shaft 520, and both of the two cutting edges 530 are directed to the rotation direction side of the blade 510.

[0439] For example, the protection assembly 400 rotates in the counterclockwise direction, and the cutting assembly 500 rotates in the clockwise direction. The cutting edge 530 on the left side of the blade shaft 520 is upward, and the cutting edge 530 on the right side of the blade shaft 520 is downward, so that as the cutting assembly 500 rotates in the clockwise direction, the two cutting edges 530 work at the same time, and each cutting edge 530 moves relative to the first extension unit 433, so that the grass is pressed in the deep part of the guide groove 410, and the cutting edge 530 quickly cuts the grass, thereby improving the mowing efficiency.

[0440] Optionally, please refer to Figure 27 , the rotating front side of the blade 510 has a cutting edge 530. The side of the blade 510 having the cutting edge 530 is opposite to the rotating front side of the protection assembly 400. That is, the rotating front side of the blade 510 is opposite to the rotating front side of the protection assembly 400, so that the grass is pressed in the deep part of the guide groove 410, and the cutting edge 530 quickly cuts the grass, thereby improving the mowing efficiency.

[0441] Optionally, please refer to Figure 6 , the cutting edge 530 is arc-shaped. The protection assembly 400 includes at least one first extension unit 433 which is arc-shaped (please refer to ​ ). The arc-shaped cutting edge of the cutting edge 530 is opposite to the arc-shaped opening of the first extension unit 433.

[0442] For example, the protection assembly 400 rotates in the counterclockwise direction, and the cutting assembly 500 rotates in the clockwise direction. The arc-shaped cutting edge of the cutting edge 530 on the left side of the blade shaft 520 is upward, and the first extension unit 433 on the left side of the first central disc 421 is arc-shaped and extends in the counterclockwise direction, that is, it extends from the first central disc 421 to the outside in an arc-shaped downward manner, so that the upward arc-shaped cutting edge on the left side of the blade shaft 520 is opposite to the arc-shaped downward first extension unit 433, so that the grass is pressed in the deep part of the guide groove 410, and the cutting edge 530 quickly cuts the grass, thereby improving the mowing efficiency. It also makes the cutting edge 530 of the cutting assembly 500 cut from the opening end 411 of the guide groove 410 to the closing end 412, which can prevent the grass in the guide groove 410 from coming out of the guide groove 410, and also press and cut the grass in the guide groove 410, thereby improving the mowing efficiency.

[0443] The arc-shaped cutting edge of the blade 530 located on the right side of the blade shaft 520 faces downward, and the first extension unit 433 on the right side of the first center disk 421 extends in an arc shape in a counterclockwise direction, that is, it extends upward in an arc shape from the first center disk 421 to the outside. The downward arc-shaped cutting edge on the right side of the blade shaft 520 is opposite to the arc-shaped first extension unit 433, so that the grass is pressed against the deep part of the inlet groove 410, and the blade 530 cuts the grass quickly, thereby improving the mowing efficiency.

[0444] The process of mowing along the edge of the grass using the cutting device 1000 provided in this application is as follows: (1) Please refer to ​ , there is a wall on the right. When the cutting mechanism 200 moves forward along the wall M2, the protection component 400 and the cutting component 500 rotate in opposite directions. In this embodiment, the protection component 400 rotates counterclockwise and the cutting component 500 rotates clockwise. At this time, the grass M1 along the wall M2 will enter the guide groove 410 set by the protection component 400 under the drive of the counterclockwise rotating protection component 400, and then the grass M1 enters the cutting range of the cutting component 500 and is cut by the cutting component 500. (2) When the cutting mechanism 200 encounters an obstacle, it is transmitted to the rotating shaft, which in turn drives the rotating shaft connector to compress the torsion spring. At this time, the cutting device 1000 can be provided with an appropriate sensor to detect the obstacle, and then control the machine to slow down or stop; when the cutting device 1000 is away from the obstacle, the torsion spring is released and the cutting mechanism 200 returns to its normal position.

[0445] The cutting device 1000 provided herein can cut grass right along the edge while ensuring sufficient safety, achieving a fully automatic right-edge cutting solution. A protective assembly 400 is provided that protects the blades and can also roll up the grass. The blades are positioned in a safe position while simultaneously guiding the grass to a position where the blades can cut, achieving cutting.

[0446] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application, and these improvements and modifications are also considered to be within the scope of protection of the present application.

Claims

1. A cutting mechanism, characterized by, The application relates to a cutting device, which comprises: a protection assembly having a containing cavity and at least one introduction slot, the containing cavity being communicated with the introduction slot, the introduction slot extending from the outer periphery of the protection assembly to the side where the center of the protection assembly is located; a cutting assembly arranged in the protection range of the protection assembly, the cutting assembly being arranged in the containing cavity, and the introduction slot being at least partially located in the cutting range of the cutting assembly; a driving assembly connected with the protection assembly, the driving assembly being used for driving the protection assembly to rotate; the driving assembly is also connected with the cutting assembly, and the driving assembly is also used for driving the cutting assembly to rotate. The driving assembly comprises a first driving assembly connected with the cutting assembly, and the first driving assembly is used for driving the cutting assembly to rotate.

2. The cutting mechanism of claim 1, wherein, The first driving assembly is connected with the protection assembly, and the first driving assembly is used for driving the protection assembly to rotate.

3. The cutting mechanism of claim 2, wherein, The driving assembly further comprises a second driving assembly connected with the protection assembly, and the second driving assembly is used for driving the protection assembly to rotate.

4. The cutting mechanism of claim 2, wherein, The rotating direction of the protection assembly is opposite to the rotating direction of the cutting assembly, or the rotating direction of the protection assembly is the same as the rotating direction of the cutting assembly.

5. A cutting mechanism as claimed in claim 3 or 4, wherein the cutting mechanism is configured to cut the sheet of material in a direction transverse to the direction of travel of the sheet of material. The rotating speed of the protection assembly is smaller than the rotating speed of the cutting assembly.

6. The cutting mechanism of claim 5, wherein, The rotating speed of the cutting assembly is greater than or equal to 10 times of the rotating speed of the protection assembly.

7. The cutting mechanism of claim 6 wherein, The rotating speed of the protection assembly is smaller than or equal to 200 revolutions per minute.

8. The cutting mechanism of claim 6 wherein, The rotating axis of the protection assembly is the same as the rotating axis of the cutting assembly.

9. The cutting mechanism of claim 3 or 4, wherein, The introduction slot comprises an open end and a closed end, the open end is located at the outer periphery of the protection assembly, the closed end is close to the center of the protection assembly relative to the open end, the slot width of the open end is greater than the slot width of the closed end, or the slot width of the introduction slot gradually decreases from the open end to the closed end.

10. The cutting mechanism of claim 1 wherein, The protection assembly comprises a center disc and a plurality of extension units arranged on the outer periphery of the center disc, the introduction slot is formed between two adjacent extension units, and the extension direction of each extension unit intersects with the radial direction of the center disc.

11. The cutting mechanism of claim 1 wherein, The extension track of each extension unit is an arc track.

12. The cutting mechanism of claim 11 wherein, Each extension unit comprises a connecting end and an extension end arranged oppositely, the connecting end is connected with the center disc, and the width of the extension end is smaller than the width of the connecting end. The surrounding center of the plurality of extension ends coincides with the center of the center disc.

13. The cutting mechanism of claim 12, wherein, The cutting assembly and the first driving assembly are coaxially arranged.

14. The cutting mechanism of claim 2 wherein, The cutting assembly comprises at least one blade and a blade shaft, at least one side of the blade has a blade edge, the middle part or the end part of the blade has a shaft hole, and the blade shaft penetrates through the shaft hole.

15. The cutting mechanism of claim 1 wherein, When the cutting assembly rotates, the driving assembly is connected with the blade shaft, and the driving assembly is used for driving the blade to rotate through the blade shaft. The rotating front side of the blade has a blade edge, and the side of the blade with the blade edge is opposite to the rotating front side of the protection assembly.

16. The cutting mechanism of claim 15, wherein, ​ 17. The cutting mechanism of claim 16, wherein, The blade is arc-shaped, the protection assembly comprises at least one arc-shaped extension unit, and the arc-shaped blade edge of the blade is opposite to the arc-shaped edge of the extension unit.

18. The cutting mechanism of claim 1 wherein, The cutting mechanism further comprises a connecting bearing, the connecting bearing comprises a first shaft ring and a second shaft ring which are relatively rotatable, the first shaft ring is connected to the cutting assembly, and the second shaft ring is connected to the protection assembly.

19. A cutting mechanism, characterized by Comprise: The protection assembly comprises a central disc and a plurality of extension units surrounding the outer periphery of the central disc, and an introduction groove is formed between two adjacent extension units; The extension direction of each extension unit intersects with the radial direction of the central disc; the protection assembly has a receiving cavity which is in communication with the introduction groove; The cutting assembly is arranged in the protection range of the protection assembly, the cutting assembly is arranged in the receiving cavity, and the introduction groove is at least partially located in the cutting range of the cutting assembly; And The driving assembly is connected to the cutting assembly, and the driving assembly is used for driving the cutting assembly to rotate.

20. The cutting mechanism of claim 19, wherein, The protection range of the protection assembly is the range formed by the rotation of the protection assembly.

21. The cutting mechanism of claim 19, wherein, The protection assembly comprises a first cover body and a second cover body, the first cover body and the second cover body are overlapped and enclosed to form the receiving cavity, and the protection assembly can protect the cutting assembly from both the horizontal direction and the vertical direction.

22. The cutting mechanism of claim 21, wherein, The first cover body and the second cover body are detachably connected.

23. The cutting mechanism of claim 21 wherein, The first cover body and the second cover body both comprise the central disc and a plurality of the extension units surrounding the outer periphery of the central disc; each extension unit comprises a first extension part close to the central disc and used for enclosing the receiving cavity, and a second extension part away from the central disc and located on the outer periphery of the receiving cavity, and the second extension part of the first cover body and the second extension part of the second cover body are connected through detachable fixing members.

24. The cutting mechanism of claim 19, wherein, The driving assembly comprises a first driving assembly, the first driving assembly is connected to the protection assembly and the cutting assembly, and the first driving assembly is used for driving the protection assembly and the cutting assembly to rotate; Or, The driving assembly comprises a first driving assembly and a second driving assembly, the first driving assembly is connected to the protection assembly, the second driving assembly is connected to the cutting assembly, the first driving assembly is used for driving the protection assembly to rotate, and the second driving assembly is used for driving the cutting assembly to rotate.

25. A cutting mechanism, characterized by The cutting mechanism is applied to a self-moving device, comprising: The protection assembly has a receiving cavity and at least one introduction groove, the receiving cavity is in communication with the introduction groove, and the introduction groove extends from the outer periphery of the protection assembly to the side where the center of the protection assembly is located; The cutting assembly is arranged in the protection range of the protection assembly, the cutting assembly is arranged in the receiving cavity, and the introduction groove is at least partially located in the cutting range of the cutting assembly; Part of the introduction groove is located in the cutting range of the cutting assembly; at least part of the introduction groove on the protection assembly is located outside the orthographic projection area of the self-moving device; A connecting assembly is configured to connect the cutting mechanism and the self-moving device, and is configured to drive the cutting mechanism to rotate when the self-moving device encounters an obstacle during movement to avoid the obstacle.

26. The cutting mechanism of claim 25, wherein, The cutting mechanism comprises a connecting support connected to the cutting assembly or the protection assembly. The connecting assembly comprises a rotating shaft assembly and an elastic reset assembly, the rotating shaft assembly is connected to the connecting support, the connecting support is rotatable through the rotating shaft assembly, and the elastic reset assembly is arranged on the self-moving device, and the elastic reset assembly is capable of exerting elastic force on the connecting support or the rotating shaft assembly to drive the connecting support to rotate to a reset position.

27. The cutting mechanism of claim 26, wherein, The elastic reset assembly comprises a buffer seat and a rotating shaft elastic member, the buffer seat is arranged on the connecting support, the buffer seat is sleeved on the periphery of the rotating shaft assembly, one end of the rotating shaft elastic member is elastically abutted against or elastically connected to the rotating shaft assembly, and at least one end of the rotating shaft elastic member is elastically abutted against or elastically connected to the buffer seat, and the buffer seat is connected to the self-moving device.

28. The cutting mechanism of claim 27, wherein, The buffer seat has a hole, and a first abutment portion is arranged on the hole wall of the hole. The rotating shaft assembly comprises a rotating shaft and a rotating shaft connecting member, the rotating shaft is fixedly connected to the connecting support, the rotating shaft connecting member is fixedly arranged on the rotating shaft, the rotating shaft connecting member is arranged in the central hole of the buffer seat, the rotating shaft elastic member is sleeved on the rotating shaft connecting member, one end of the rotating shaft elastic member is elastically abutted against or elastically connected to the rotating shaft connecting member, and at least one end of the rotating shaft elastic member is elastically abutted against or elastically connected to the first abutment portion.

29. The cutting mechanism of claim 28, wherein, The rotating shaft connecting member comprises a body portion and a hook portion arranged on the body portion, and the body portion is sleeved on the rotating shaft. The rotating shaft elastic member is a torsion spring, the rotating shaft elastic member comprises a first torsion arm, a first spiral arm, an intermediate connecting arm, a second spiral arm and a second torsion arm connected in sequence, the first torsion arm and the second torsion arm are abutted against the first abutment portion of the buffer seat, the first spiral arm and the second spiral arm are sleeved on the rotating shaft, and the intermediate connecting arm is engaged with the hook portion of the rotating shaft connecting member.

30. The cutting mechanism of claim 25, wherein, The cutting mechanism further comprises a driving assembly, the driving assembly is connected to the protection assembly and is configured to drive the protection assembly to rotate, and / or the driving assembly is connected to the cutting assembly and is configured to drive the cutting assembly to rotate. The cutting mechanism further comprises a detector and a controller, at least part of the detector is arranged on the connecting assembly, and the detector is configured to detect the rotation angle of the cutting mechanism relative to the self-moving device. The controller is electrically connected to the detector, the controller is configured to control the driving assembly to stop driving when the detector detects that the rotation angle of the cutting mechanism relative to the self-moving device is greater than a first preset angle, and the controller is further configured to control the driving assembly to resume driving when the detector detects that the rotation angle of the cutting mechanism relative to the self-moving device is reduced to be less than or equal to the first preset angle.

31. The cutting mechanism of claim 30, wherein, The detector comprises an encoder or an angle detector, or the detector comprises a Hall sensor and a magnet.

32. The cutting mechanism of any of claims 25 to 31, wherein, The cutting mechanism further comprises a connecting bearing, the connecting bearing comprising a first shaft ring and a second shaft ring which are rotatable relative to each other, the first shaft ring being connected to the cutting assembly, and the second shaft ring being connected to the protection assembly.

33. A cutting mechanism, characterized by The cutting mechanism comprises: a protection assembly, the protection assembly comprising a first central disc and a plurality of first extension units arranged around the outer periphery of the first central disc, at least part of two adjacent first extension units forming a guide slot, the guide slot extending from the outer periphery of the protection assembly towards the side where the center of the protection assembly is located; the protection assembly has a receiving cavity which is in communication with the guide slot; a cutting assembly, the cutting assembly being arranged within the protection range of the protection assembly, the cutting assembly being arranged in the receiving cavity, and at least part of the guide slot being located within the cutting range of the cutting assembly; a first driving assembly, the first driving assembly being connected to the cutting assembly, and the first driving assembly being used to drive the cutting assembly to rotate; a second driving assembly, the second driving assembly being connected to the protection assembly, and the second driving assembly being used to drive the protection assembly to rotate.

34. A cutting mechanism characterized by, The cutting mechanism comprises: a protection assembly, the protection assembly comprising a first central disc and a plurality of first extension units arranged around the outer periphery of the first central disc, at least part of two adjacent first extension units forming a guide slot, the guide slot extending from the outer periphery of the protection assembly towards the side where the center of the protection assembly is located; the protection assembly has a receiving cavity which is in communication with the guide slot; a cutting assembly, the cutting assembly being arranged within the protection range of the protection assembly, the cutting assembly being arranged in the receiving cavity, and at least part of the guide slot being located within the cutting range of the cutting assembly; and a driving assembly, the driving assembly being connected to the protection assembly and the cutting assembly, and the driving assembly being used to drive the protection assembly and the cutting assembly to rotate.

35. A cutting apparatus characterized by, The cutting device comprises a body main body and at least one cutting mechanism as claimed in any one of claims 1 to 34, the cutting mechanism being arranged on the body main body.

36. The cutting apparatus of claim 35, wherein, At least part of the guide slot is located outside the projection area of the body main body.

37. The cutting apparatus of claim 36, wherein, The body main body comprises a front end and a rear end along the direction of travel, and the body main body further comprises a first side and a second side along the width direction; The cutting mechanism is located on the first side of the body main body, the extension direction of each guide slot is inclined relative to the direction of travel, and a plurality of guide slots are arranged in a clockwise direction around the center of the protection assembly; and / or The cutting mechanism is located on the second side of the body main body, the extension direction of each guide slot is inclined relative to the direction of travel, and a plurality of guide slots are arranged in a counterclockwise direction around the center of the protection assembly.

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