Lawn mower

Abstract

The invention provides a mower. The mower comprises an equipment main body, a cutting mechanism and a protection mechanism. The cutting mechanism comprises a cutting assembly. The cutting assembly is arranged below the equipment body. The protection mechanism comprises a transmission assembly and a protection assembly. The transmission assembly is arranged on the equipment body. The transmission assembly is connected with the protection assembly. The transmission assembly is used for driving the protection assembly to move relative to the equipment body. The protection assembly at least has a first position and a second position. When the protection assembly is located at the first position, the protection assembly extends out of the equipment body and forms local protection on the periphery of the cutting assembly. When the protection assembly is located at the second position, the protection assembly is located above the cutting assembly, and the horizontal projection of the protection assembly and the horizontal projection of the cutting assembly at least partially coincide. When the protection assembly moves between the first position and the second position, a gap is formed between the protection assembly and the cutting assembly. The technical problem that the mower has cutting dead angles due to the arrangement of the protection part can be solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lawn mowers, in particular to a lawn mower. BACKGROUND

[0002] The edge of the cutting mechanism of the lawn mower is usually provided with a certain distance from the body shell to avoid the user directly contacting the cutting mechanism through the distance. However, since the cutting mechanism and the ground have a certain height, the user may accidentally stretch the foot into the body shell during the working of the lawn mower. Therefore, a protective piece is arranged to cover the side and bottom of the cutting mechanism to provide a physical barrier. However, the arrangement of the protective piece makes it difficult for the lawn mower to cut the edge of the lawn or the grass located on the wall side, and there is a cutting dead angle. SUMMARY

[0003] Therefore, the present application provides a lawn mower to solve the technical problem that the arrangement of the protective piece causes the cutting dead angle of the lawn mower.

[0004] An embodiment of the present application provides a lawn mower. The lawn mower comprises a device body, a cutting mechanism and a protective mechanism. The cutting mechanism comprises a cutting assembly. The cutting assembly is arranged below the device body. The protective mechanism comprises a transmission assembly and a protective assembly. The transmission assembly is arranged on the device body. The transmission assembly is connected with the protective assembly. The transmission assembly is used to drive the protective assembly to move relative to the device body. The protective assembly has at least a first position and a second position. When the protective assembly is in the first position, the protective assembly extends out of the device body and forms partial protection to the periphery of the cutting assembly. When the protective assembly is in the second position, the protective assembly is above the cutting assembly, and the horizontal projection of the protective assembly and the horizontal projection of the cutting assembly at least partially overlap. When the protective assembly moves between the first position and the second position, the protective assembly has a gap with the cutting assembly.

[0005] When the protective assembly is in the first position, by making the protective assembly extend out of the device body and making the protective assembly form partial protection to the periphery of the cutting assembly, the operator or the animal can be effectively prevented from accidentally contacting the working cutting assembly during the mowing process, and the safety risk during the use of the lawn mower is reduced. When the protective assembly is in the second position, by making the protective assembly move above the cutting assembly, and making the horizontal projection of the protective assembly and the horizontal projection of the cutting assembly at least partially overlap, the protective assembly no longer directly protects the cutting assembly laterally, and the cutting assembly can be allowed to be closer to the edge area for mowing operation, which helps to reduce the cutting dead angle. At the same time, when the protective assembly moves between the first position and the second position, the protective assembly always has a gap with the cutting assembly, which helps to ensure that the protective assembly does not interfere with the working cutting assembly during the movement, and improves the overall reliability of the lawn mower.

[0006] In some embodiments, the guard assembly further has a third position. The guard assembly includes at least one inflection point in a movement trajectory between the first position and the second position. The guard assembly is in the third position when the guard assembly moves to the inflection point. The third position is configured such that the movement trajectory of the guard assembly bypasses the outside of the cutting assembly.

[0007] When the guard assembly moves between the first position and the second position, the guard assembly is ensured not to interfere with the cutting assembly by passing through the third position driven by the transmission assembly, improving the stability and reliability of the movement of the guard assembly and avoiding damage to the cutting assembly.

[0008] In some embodiments, when the guard assembly moves from the first position to the third position, the guard assembly continuously moves away from the cutting assembly in the horizontal direction. When the guard assembly moves from the third position to the second position, the guard assembly continuously moves towards the cutting assembly in the horizontal direction. When the guard assembly moves from the first position to the second position, the guard assembly continuously rises in the vertical direction.

[0009] When the guard assembly moves from the first position to the second position, by designing a movement trajectory of first horizontal outward movement, then horizontal inward movement, and simultaneous upward movement throughout the movement, the guard assembly is ensured to safely avoid the cutting assembly, completely eliminating the risk of movement interference between the guard assembly and the cutting assembly. The guard assembly is then inwardly retracted to above the cutting assembly, realizing the compactness of the overall structure of the lawn mower while ensuring the safety of the movement.

[0010] In some embodiments, when the guard assembly is in the first position, the horizontal height of the guard assembly is lower than the cutting height of the cutting assembly.

[0011] By setting the horizontal height of the guard assembly in the first position to be lower than the cutting height, the guard assembly can form a physical barrier below the cutting assembly, effectively blocking, triggering in advance, or intercepting debris such as stones and branches that are splashed from the side of the lawn mower at a low angle, or preferentially supporting or blocking foreign matter when the blade accidentally collides with hard objects, thereby improving the safety of the lawn mower.

[0012] In some embodiments, the guard assembly includes a first guard member. The first guard member is connected to the transmission assembly. The transmission assembly drives the first guard member to move relative to the device body. When the first guard member is in the first position, the horizontal projection of the first guard member is located outside the horizontal projection of the cutting assembly and forms lateral protection for the horizontal height position of the cutting assembly. When the first guard member is in the second position, the horizontal projection of the device body covers the horizontal projection of the first guard member.

[0013] The first guard member provides lateral protection for the cutting assembly when in the first position, effectively blocking obstacles from contacting the cutting assembly, which is suitable for the case that the mower is mowing grass in an open area, or the mower is in a working area close to users, pets, etc., so that the mower meets the safety standard. When the first guard member is in the second position, the horizontal projection of the device body covers the horizontal projection of the first guard member, and the first guard member is completely stored in the device body, so that the first guard member does not hinder the operation of the cutting assembly, facilitating the edge cutting operation of the mower, reducing the cutting dead angle of the cutting assembly, and realizing the storage of the first guard member, so that the structure of the mower is more compact, facilitating the carrying or storage of the mower.

[0014] In some embodiments, the guard assembly further comprises a second guard member. The second guard member is connected to the bottom of the first guard member and moves with the first guard member. The second guard member extends towards the interior of the device body. When the first guard member is in the first position, the horizontal projection of the second guard member at least partially overlaps the horizontal projection of the cutting assembly, and forms a bottom protection for the cutting assembly. When the first guard member is in the second position, the horizontal projection of the device body covers the horizontal projection of the second guard member.

[0015] When the first guard member is in the first position, the horizontal projection of the second guard member at least partially overlaps the cutting assembly, and the second guard member forms an effective protection for the cutting assembly from the bottom, which can effectively prevent the upward splashing of gravel and debris below the cutting assembly, and effectively avoid accidental contact between the cutting assembly and the user's feet, thereby improving the safety of the mower. At the same time, since the second guard member moves synchronously with the first guard member, it can be completely stored in the interior of the device body together with the first guard member when in the second position, so that the cutting assembly can better perform edge cutting and reduce the cutting dead angle caused by the presence of the guard assembly.

[0016] In some embodiments, the first guard member can also move to a third position relative to the device body. When the first guard member is in the third position, the horizontal projection of the second guard member is separated from the horizontal projection of the cutting assembly.

[0017] Since the second guard member is connected to the bottom of the first guard member and extends towards the interior of the device body, when the first guard member is in the third position, by making the horizontal projection of the second guard member separate from the horizontal projection of the cutting assembly, it can be ensured that the second guard member does not interfere with the cutting assembly when the first guard member moves between the first position and the second position, thereby improving the stability and reliability of the movement of the guard assembly and avoiding damage to the cutting assembly.

[0018] In some embodiments, when the first guard moves from the first position to the third position, the transmission assembly moves the first guard outwardly away from the device body while simultaneously lifting the first guard relative to the device body. When the first guard moves from the third position to the second position, the transmission assembly moves the first guard inwardly toward the device body while simultaneously lifting the first guard relative to the device body.

[0019] When the first guard moves from the first position to the third position, the first guard moves outwardly while continuously lifting, which enables the guard assembly to smoothly disengage from the first position and effectively avoid lateral obstacles. When the first guard moves from the third position to the second position, the first guard moves inwardly while lifting, which helps enable the guard assembly to be stowed in the device body in the most direct path, thereby achieving smooth and interference-free movement of the guard assembly relative to the device body.

[0020] In some embodiments, when the first guard moves from the second position to the third position, the transmission assembly moves the first guard outwardly away from the device body while simultaneously lowering the first guard relative to the device body. When the first guard moves from the third position to the first position, the transmission assembly moves the first guard inwardly toward the device body while simultaneously lowering the first guard relative to the device body.

[0021] When the first guard moves from the second position to the first position via the third position, by moving the first guard horizontally outwardly first and then horizontally inwardly while continuously lowering, it helps ensure that the guard assembly can protect the cutting assembly without interfering with the cutting assembly.

[0022] In some embodiments, the guard mechanism further comprises a support and a first driving member. The transmission assembly is a linkage assembly. The support is connected to the device body. One end of the linkage assembly is connected to the support, and the other end of the linkage assembly is connected to the first guard or the second guard. The linkage assembly is located above the cutting assembly. The first driving member is connected to the linkage assembly. The first driving member is used to drive the linkage assembly to swing to move the first guard relative to the device body.

[0023] In some embodiments, one end of the linkage assembly is rotatably connected to the support, and the other end of the linkage assembly is rotatably connected to the first guard. When the first guard is in the first position, the rotatable connection between the linkage assembly and the support is located above the rotatable connection between the linkage assembly and the first guard.

[0024] The two ends of the connecting rod assembly are rotatably connected with the support and the first shielding member respectively, when the first driving member drives the connecting rod assembly to rotate relative to the support, the first shielding member will also rotate relative to the connecting rod assembly. And when the first shielding member is in the first position, the rotating connection between the connecting rod assembly and the support is located above the rotating connection between the connecting rod and the first shielding member, when the first shielding member moves from the first position to the second position, the first shielding member has a tendency to move outward away from the interior of the equipment main body, thereby realizing upward movement while being able to drive the second shielding member to avoid the cutting assembly. When the first shielding member moves to the upper side of the cutting assembly, the connecting rod assembly can continue to drive the first shielding member to move upward while moving to the interior of the equipment main body.

[0025] In some embodiments, the connecting rod assembly includes a first connecting rod and a second connecting rod. The first connecting rod includes a first connecting portion and a second connecting portion arranged at intervals. The first connecting portion is rotatably connected with the support. The second connecting portion is rotatably connected with the first shielding member or the second shielding member. The second connecting rod includes a third connecting portion and a fourth connecting portion arranged at intervals. The third connecting portion is rotatably connected with the support. The fourth connecting portion is rotatably connected with the first shielding member or the second shielding member. The first driving member is arranged on the support. The first driving member is connected with the first connecting rod or the second connecting rod to drive the first connecting rod to swing. When the first shielding member is in the first position, the first connecting rod is located above the second connecting rod, the third connecting portion is closer to the outer side of the equipment main body than the first connecting portion, and the fourth connecting portion is closer to the outer side of the equipment main body than the second connecting portion.

[0026] In some embodiments, the shielding mechanism further includes a guide structure. The guide structure is arranged on the support. One end of the connecting rod assembly is slidably connected with the guide structure to drive the first shielding member to move relative to the equipment main body, and the other end of the connecting rod assembly is fixedly connected with the first shielding member or the second shielding member. The guide track of the guide structure includes a first guide segment and a second guide segment connected in sequence. The first guide segment is configured to guide the first shielding member to move from the first position to the third position. The second guide segment is configured to guide the first shielding member to move from the third position to the second position. The second guide segment is farther away from the working surface than the first guide segment.

[0027] By arranging the guide structure, the first guide segment and the second guide segment of the guide structure can guide the first shielding member to move between the first position and the second position, and drive the second shielding member to avoid the cutting assembly, thereby effectively ensuring the smooth and reliable movement of the first shielding member and the second shielding member.

[0028] In some embodiments, the guide structure is a guide groove. The guide groove is arranged on the support. One end of the connecting rod assembly is slidably connected with the guide groove. The first driving member drives the connecting rod assembly to slide in the guide groove.

[0029] The guide groove can convert the driving force of the first driving member into the preset trajectory of the linkage assembly, so that the protection assembly moves smoothly and reliably between the first position and the second position.

[0030] In some embodiments, the number of guide grooves is two. The two guide grooves are arranged at intervals. One guide groove is a first guide groove, and the other guide groove is a second guide groove. The linkage assembly further includes a trajectory linkage. The trajectory linkage includes a first fitting part, a second fitting part, and a third fitting part arranged at intervals. The first fitting part is fixedly connected with the first protection member or the second protection member. The second fitting part is in sliding connection with the second guide groove. The third fitting part is in sliding connection with the first guide groove. The first driving member is connected with the trajectory linkage. The first driving member drives the trajectory linkage to slide in the first guide groove and the second guide groove.

[0031] By restricting the movement of the trajectory linkage through the two guide grooves, the accuracy and repeatability of the movement trajectory of the first protection member can be ensured, and compared with arranging one guide groove, the risk of shaking or jamming of single-point guidance can be effectively eliminated.

[0032] In some embodiments, the linkage assembly further includes a linkage member. The linkage member includes a mounting part and a linkage part. The mounting part is in rotational connection with the support. The linkage part is provided with a linkage groove in the extension direction of the linkage member. The third fitting part is slidingly arranged in the linkage groove. The first driving member is connected with the mounting part to drive the linkage member to rotate.

[0033] By connecting the linkage member and the third fitting part of the trajectory linkage, and then driving the linkage member to rotate by the first driving member, the rotational movement of the linkage member is stably converted into the sliding movement of the protection assembly along the guide groove, further improving the stability and reliability of the movement of the protection assembly relative to the device body.

[0034] In some embodiments, the cutting mechanism further includes a second driving member. The second driving member is connected to the device body. The cutting assembly includes a cutter disc body and a cutting member. The cutter disc body is connected with the second driving member. The cutting member is connected to the cutter disc body. The cutting member is at least partially located outside the cutter disc body. The second driving member drives the cutter disc body to rotate to cut grass by the cutting member.

[0035] In some embodiments, the number of cutting members is multiple. The multiple cutting members are arranged at intervals in the rotational circumferential direction of the cutter disc body.

[0036] The multiple cutting members can simultaneously cut grass, which helps to improve the grass cutting efficiency of the mower.

[0037] In some embodiments, the device body is provided with a sealed cavity. The second driving member is located inside the sealed cavity.

[0038] The second driving part for driving the cutting assembly to cut grass is arranged in the sealed cavity of the equipment main body, so that rainwater can be prevented from entering the second driving part when the mower works in rainy days, and grass fragments generated by cutting grass can be prevented from entering the second driving part, thereby prolonging the service life of the second driving part. BRIEF DESCRIPTION OF DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some of the embodiments of the present application, and therefore should not be considered as limiting the scope.

[0040] Figure 1 A schematic view of a protective assembly in a first position in an embodiment of the present application; Figure 2 A schematic view of a protective assembly in a second position in an embodiment of the present application; Figure 3 A schematic view of a first protective part in a first position in an embodiment of the present application; Figure 4 A schematic view of a first protective part in a second position in an embodiment of the present application; Figure 5 A schematic view of a trajectory of a protective assembly relative to an equipment main body in an embodiment of the present application; Figure 6 A schematic view of a trajectory of a protective assembly relative to an equipment main body in an embodiment of the present application; Figure 7 A schematic view of a trajectory of a protective assembly relative to an equipment main body in an embodiment of the present application; Figure 8 A schematic view of a trajectory of a protective assembly relative to an equipment main body in an embodiment of the present application; Figure 9 A structural schematic view of a connecting rod assembly provided in an embodiment of the present application; Figure 10 A structural schematic view of a connecting rod assembly provided in an embodiment of the present application; Figure 11 A structural schematic view of a guide structure provided in an embodiment of the present application; Figure 12 A structural schematic view of a guide structure provided in an embodiment of the present application; Figure 13 A structural schematic view of a cutting part close to a cutter main body in an embodiment of the present application; Figure 14 A structural schematic view of a cutting part away from a cutter main body in an embodiment of the present application; Figure 15 A partial structural schematic view of a cutting assembly.

[0041] Main element symbol explanation: 100, mower; 10, equipment main body; 101, let go of the mouth; 102, sealed cavity; 20, cutting mechanism; 21, cutting assembly; 211, cutter main body; 2110, containing groove; 212, cutting piece; 213, telescopic piece; 2130, arc surface; 214, reset piece; 215, locking piece; 216, elastic piece; 22, second driving piece; 30, protection mechanism; 3, protection assembly; 31, first protection piece; 32, second protection piece; 33, transmission assembly; 331, first connecting rod; 3311, first connecting part; 3312, second connecting part; 332, second connecting rod; 3321, third connecting part; 3322, fourth connecting part; 333, track connecting rod; 3331, first matching part; 3332, second matching part; 3333, third matching part; 334, linkage piece; 3341, mounting part; 3342, linkage part; 3342a, linkage groove; 34, support; 35, first driving piece; 36, guide structure; 361, first guide section; 362, second guide section; 36a, first guide groove; 36b, second guide groove; O, inflection point. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments of the present application.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0044] The terms "first", "second", "third", and the like, are used only for descriptive purposes and do not connote or imply relative importance.

[0045] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be a middle element present. When an element is considered to be "provided on" another element, it can be directly provided on the other element or there can be a middle element present.

[0046] Embodiments of the present application provide a mower. The mower comprises a device body, a cutting mechanism and a protection mechanism. The cutting mechanism comprises a cutting assembly. The cutting assembly is arranged below the device body. The protection mechanism comprises a transmission assembly and a protection assembly. The transmission assembly is arranged on the device body. The transmission assembly is connected with the protection assembly. The transmission assembly is configured to drive the protection assembly to move relative to the device body. The protection assembly has at least a first position and a second position. When the protection assembly is in the first position, the protection assembly extends out of the device body and forms a partial protection for the periphery of the cutting assembly. When the protection assembly is in the second position, the protection assembly is above the cutting assembly, and a horizontal projection of the protection assembly and a horizontal projection of the cutting assembly at least partially overlap. When the protection assembly moves between the first position and the second position, the protection assembly has a gap with the cutting assembly.

[0047] When the protection assembly is in the first position, by extending the protection assembly out of the device body and forming a partial protection for the periphery of the cutting assembly, the operator or animals can be effectively prevented from accidentally contacting the working cutting assembly during the mowing process, and the safety risk during the use of the mower is reduced. When the protection assembly is in the second position, by moving the protection assembly above the cutting assembly, and the horizontal projection of the protection assembly and the horizontal projection of the cutting assembly at least partially overlap, the protection assembly no longer directly protects the cutting assembly laterally, and the cutting assembly can be allowed to be closer to the edge area for mowing operation, which helps to reduce the cutting dead angle. At the same time, when the protection assembly moves between the first position and the second position, the protection assembly always has a gap with the cutting assembly, which helps to ensure that the protection assembly does not interfere with the working cutting assembly during the movement, and improves the overall reliability of the mower.

[0048] Some embodiments of the present application will be described in detail below with reference to the drawings. The following embodiments and features of the embodiments can be combined with each other without conflict.

[0049] Please refer to Figure 1 and Figure 2An embodiment of the present application provides a mower 100. The mower 100 comprises a device body 10, a cutting mechanism 20 and a protection mechanism 30. The cutting mechanism 20 comprises a cutting assembly 21. The cutting assembly 21 is arranged below the device body 10. The protection mechanism 30 comprises a transmission assembly 33 and a protection assembly 3. The transmission assembly 33 is arranged on the device body 10. The transmission assembly 33 is connected with the protection assembly 3. The transmission assembly 33 is configured to drive the protection assembly 3 to move relative to the device body 10. The protection assembly 3 has at least a first position and a second position. When the protection assembly 3 is in the first position, the protection assembly 3 extends out of the device body 10 and forms a partial protection to the periphery of the cutting assembly 21. When the protection assembly 3 is in the second position, the protection assembly 3 is above the cutting assembly 21, and a horizontal projection of the protection assembly 3 and a horizontal projection of the cutting assembly 21 at least partially overlap. When the protection assembly 3 moves between the first position and the second position, the protection assembly 3 has a gap with the cutting assembly 21.

[0050] When the protection assembly 3 is in the first position, by extending the protection assembly 3 out of the device body 10 and forming a partial protection to the periphery of the cutting assembly 21, the operator or the animal can be effectively prevented from accidentally contacting the working cutting assembly 21 during the mowing process, and the safety risk during the use of the mower 100 is reduced. When the protection assembly 3 is in the second position, by moving the protection assembly 3 above the cutting assembly 21, and the horizontal projection of the protection assembly 3 and the horizontal projection of the cutting assembly 21 at least partially overlap, the protection assembly 3 no longer directly laterally protects the cutting assembly 21, and the cutting assembly 21 can be allowed to be closer to the edge area for mowing operation, which helps to reduce the cutting dead angle. At the same time, when the protection assembly 3 moves between the first position and the second position, the protection assembly 3 always has a gap with the cutting assembly 21, which helps to ensure that the protection assembly 3 does not interfere with the working cutting assembly 21 during the movement, and improves the overall reliability of the mower 100.

[0051] It can be understood that when the protection assembly 3 is in the first position, the protection assembly 3 forms a lateral protection to the cutting assembly 21, and also forms a physical barrier outside the cutting assembly 21. When the mower 100 performs edge cutting, the cutting assembly 21 is difficult to perform mowing operation on the edge of the lawn or the edge area close to the obstacle, thereby forming a cutting dead angle. Therefore, when the mower 100 mows the edge of the lawn or the edge area close to the obstacle, the transmission assembly 33 drives the protection assembly 3 to move to the second position to reduce the cutting dead angle.

[0052] In the present application, the horizontal projection of the protection assembly 3 refers to the orthographic projection of the protection assembly 3 along the up-down direction of the mower 100 when the mower 100 is running, and the same applies to other components related to the horizontal projection. When the protection assembly 3 is in the first position, the protection assembly 3 forms a partial protection to the periphery of the cutting assembly 21, which can be understood as that when the protection assembly 3 is in the first position, the horizontal projection of the protection assembly 3 is at least partially located outside the cutting assembly 21.

[0053] It should be noted that in order to improve the cutting effect of the mower 100 at the edge of the lawn or the edge area close to the obstacle, the cutting assembly 21 can also be actively driven to move outward of the equipment body 10 of the mower 100, so as to increase the mowing coverage of the mower 100 and reduce the cutting dead angle. However, by actively driving the cutting assembly 21 to move outward of the equipment body 10, it is possible that the mower 100 core components will be damaged due to the movement of the cutting assembly 21, and it is also possible that the waterproof problem of the equipment body 10 of the mower 100 will be caused, thereby affecting the service life of the mower 100. By changing the positional relationship between the protection assembly 3 and the cutting assembly 21, the present application not only improves the mowing coverage of the mower 100 when cutting at the edge, but also improves the maintainability of the mower 100, avoids the risk caused by changing the position of the cutting assembly 21, and helps to improve the product life of the mower 100.

[0054] In some embodiments, the cutting assembly 21 can be in the form of rotary cutting, or in the form of electric shearing cutting, roller cutting, etc.

[0055] Please refer to Figure 5 , Figure 5 The trajectory diagram shown in FIG. 6 represents the trajectory of the protection assembly 3 moving from the first position to the second position in some embodiments, and it can be understood that Figure 5 The reverse of the trajectory shown in FIG. 6 is the trajectory of the protection assembly 3 moving from the second position to the first position. The protection assembly 3 also has a third position. The trajectory of the protection assembly 3 between the first position and the second position includes at least one inflection point O. When the protection assembly 3 moves to the inflection point O, the protection assembly 3 is in the third position. The third position is configured such that the trajectory of the protection assembly 3 bypasses the outside of the cutting assembly 21.

[0056] When the protection assembly 3 moves between the first position and the second position, the transmission assembly 33 drives the protection assembly 3 to pass through the third position, so as to ensure that the protection assembly 3 does not interfere with the cutting assembly 21, improve the stability and reliability of the movement of the protection assembly 3, and avoid damage to the cutting assembly 21.

[0057] In some embodiments, when the guard assembly 3 moves from the first position to the third position, the guard assembly 3 continuously moves away from the cutting assembly 21 in the horizontal direction. When the guard assembly 3 moves from the third position to the second position, the guard assembly 3 continuously moves towards the cutting assembly 21 in the horizontal direction. When the guard assembly 3 moves from the first position to the second position, the guard assembly 3 continuously rises in the vertical direction.

[0058] By designing the movement track of the guard assembly 3 as first moving horizontally outwards, then moving horizontally inwards, and rising all the time, when the guard assembly 3 moves from the first position to the second position, the guard assembly 3 can safely avoid the cutting assembly 21, and the risk of movement interference between the guard assembly 3 and the cutting assembly 21 is completely eliminated. The guard assembly 3 is then moved inwards to above the cutting assembly 21, which realizes the compactness of the overall structure of the lawn mower 100 under the premise of ensuring the safety of movement.

[0059] In some embodiments, when the guard assembly 3 is in the third position, the gap between the guard assembly 3 and the cutting assembly 21 is the largest. In other embodiments, when the guard assembly 3 is in the third position, the distance between the guard assembly 3 and the cutting assembly 21 in the horizontal direction is the largest.

[0060] In some embodiments, when the guard assembly 3 is in the first position, the horizontal height of the guard assembly 3 is lower than the cutting height of the cutting assembly 21. Here, the cutting height of the cutting assembly 21 can be understood as the height of the grass after mowing, or the height of the cutting assembly 21 from the working surface. The horizontal height of the guard assembly 3 can be understood as the height of the guard assembly 3 from the working surface. The working surface can be understood as the ground or the lawn surface.

[0061] By setting the horizontal height of the guard assembly 3 in the first position to be lower than the cutting height, the guard assembly 3 can form a physical barrier below the cutting assembly 21, thereby effectively blocking, triggering in advance, or intercepting debris such as stones and branches that are splashed from the side of the lawn mower 100 at a low angle, or preferentially supporting or blocking foreign matter when the blade accidentally collides with hard objects, thereby improving the safety of the lawn mower 100.

[0062] Please refer to Figure 3 and Figure 4In some embodiments, the guard assembly 3 comprises a first guard 31. The first guard 31 is connected with a transmission assembly 33. The transmission assembly 33 drives the first guard 31 to move relative to the device body 10. When the first guard 31 is in the first position, the horizontal projection of the first guard 31 is outside the horizontal projection of the cutting assembly 21, and the first guard 31 forms lateral protection to the horizontal position of the cutting assembly 21. When the first guard 31 is in the second position, the horizontal projection of the device body 10 covers the horizontal projection of the first guard 31. It should be noted that when the first guard 31 is in the first position, the horizontal projection of the first guard 31 can be entirely outside the horizontal projection of the cutting assembly 21, or can be partially outside the horizontal projection of the cutting assembly 21.

[0063] By making the first guard 31 provide lateral protection to the cutting assembly 21 when the first guard 31 is in the first position, the contact between the obstacle and the cutting assembly 21 is effectively blocked, which is suitable for the case that the lawn mower 100 mows grass in an open area, or the case that the lawn mower 100 is in a working area where users, pets or the like can approach, so that the lawn mower 100 meets the safety standard. When the first guard 31 is in the second position, the horizontal projection of the device body 10 covers the horizontal projection of the first guard 31, and the first guard 31 is completely accommodated in the device body 10, so that the first guard 31 does not hinder the operation of the cutting assembly 21, and the lawn mower 100 is facilitated to perform edge cutting operation, which helps to reduce the cutting dead angle of the cutting assembly 21, and also helps to accommodate the first guard 31, so that the structure of the lawn mower 100 is more compact, and the lawn mower 100 is facilitated to be carried or stored.

[0064] Please refer to Figure 1 In some embodiments, the side of the device body 10 is provided with a gap 101. When the first guard 31 is in the second position, the first guard 31 is retracted into the interior of the device body 10 through the gap 101.

[0065] By providing the gap 101 on the side of the device body 10, when the first guard 31 moves from the first position to the second position relative to the device body 10, the first guard 31 can be retracted into the interior of the device body 10 through the gap 101. Compared with the case where the gap 101 is not provided, the first guard 31 needs to move to the second position without interfering with the cutting assembly 21, which increases the lateral size of the entire lawn mower 100. The provision of the gap 101 can make the structure of the lawn mower 100 more compact.

[0066] Please refer to Figure 3 and Figure 4In some embodiments, the protection assembly 3 further comprises a second protection piece 32. The second protection piece 32 is connected to the bottom of the first protection piece 31 to move together with the first protection piece 31. The second protection piece 32 extends towards the interior of the device main body 10. When the first protection piece 31 is in the first position, the horizontal projection of the second protection piece 32 at least partially overlaps with the horizontal projection of the cutting assembly 21, and forms a bottom protection for the cutting assembly 21. When the first protection piece 31 is in the second position, the horizontal projection of the device main body 10 covers the horizontal projection of the second protection piece 32.

[0067] When the first protection piece 31 is in the first position, the horizontal projection of the second protection piece 32 at least partially overlaps with the cutting assembly 21, the second protection piece 32 forms an effective bottom protection for the cutting assembly 21, which can effectively prevent the flying of debris below the cutting assembly 21 upwards, and can effectively avoid the accidental contact of the cutting assembly 21 with the user's feet, etc., thereby improving the operation safety of the mower 100. At the same time, since the second protection piece 32 moves synchronously with the first protection piece 31, it can be completely accommodated in the interior of the device main body 10 together with the first protection piece 31 in the second position, and the cutting assembly 21 can better perform edge cutting, and reduce the cutting dead angle caused by the existence of the protection assembly 3.

[0068] In some embodiments, the first protection piece 31 and the second protection piece 32 can be integrally formed.

[0069] Please refer to Figures 5 to 8 In some embodiments, the first protection piece 31 can also move to a third position relative to the device main body 10. When the first protection piece 31 is in the third position, the horizontal projection of the second protection piece 32 is separated from the horizontal projection of the cutting assembly 21.

[0070] Since the second protection piece 32 is connected to the bottom of the first protection piece 31 and extends towards the interior of the device main body 10, when the first protection piece 31 is in the third position, by making the horizontal projection of the second protection piece 32 separated from the horizontal projection of the cutting assembly 21, it can be ensured that the second protection piece 32 will not interfere with the cutting assembly 21 when the first protection piece 31 moves between the first position and the second position, thereby improving the stability and reliability of the movement of the protection assembly 3, and avoiding the damage of the cutting assembly 21.

[0071] Please refer to Figure 5 In some embodiments, when the first protection piece 31 moves from the first position to the third position, the transmission assembly 33 drives the first protection piece 31 to move towards the outside of the device main body 10 while lifting relative to the device main body 10. When the first protection piece 31 moves from the third position to the second position, the transmission assembly 33 drives the first protection piece 31 to move towards the interior of the device main body 10 while lifting relative to the device main body 10.

[0072] When the first guard 31 moves from the first position to the third position, it moves outward while continuously lifting, which enables the guard assembly 3 to smoothly move away from the first position and effectively avoid the lateral obstacle. When the first guard 31 moves from the third position to the second position, it moves inward while lifting, which helps the guard assembly 3 to be stowed in the device body 10 in the most direct path, thereby achieving smooth and interference-free movement of the guard assembly 3 relative to the device body 10.

[0073] In some embodiments, when the first guard 31 moves from the second position to the third position, the transmission assembly 33 drives the first guard 31 to move outward relative to the device body 10 while lowering relative to the device body 10. When the first guard 31 moves from the third position to the first position, the transmission assembly 33 drives the first guard 31 to move inward relative to the device body 10 while lowering relative to the device body 10.

[0074] When the first guard 31 moves from the second position to the first position via the third position, by moving the first guard 31 horizontally outward first and then horizontally inward while continuously lowering, it helps to ensure that the guard assembly 3 can protect the cutting assembly 21 without interfering with the cutting assembly 21.

[0075] Please refer to Figures 6 to 8 , a schematic diagram of the trajectory of the first guard 31 moving from the first position to the second position in some embodiments. It can be understood that, in Figures 6 to 8 , the reverse trajectory is the trajectory of the first guard 31 moving from the second position to the first position.

[0076] Please refer to Figure 6 , in some embodiments, the first guard 31 can also move to a first intermediate position relative to the device body 10. When the first guard 31 is in the first intermediate position, the horizontal projection of the second guard 32 is located outside the cutting area of the cutting assembly 21, and the second guard 32 is located below the cutting assembly 21. When the first guard 31 moves from the first position to the first intermediate position, the transmission assembly 33 drives the first guard 31 to translate toward the outside of the device body 10. When the first guard 31 moves from the first intermediate position to the third position, the transmission assembly 33 drives the first guard 31 to lift relative to the device body 10. When the first guard 31 moves from the third position to the second position, the transmission assembly 33 drives the first guard 31 to move inward relative to the device body 10 while lifting relative to the device body 10.

[0077] Please further refer to Figure 7In some embodiments, the first guard 31 is further movable relative to the device body 10 to a first intermediate position and a second intermediate position. When the first guard 31 is in the first intermediate position, the horizontal projection of the second guard 32 is outside the cutting area of the cutting assembly 21, and the second guard 32 is below the cutting assembly 21. When the first guard 31 is in the second intermediate position, the horizontal projection of the second guard 32 is outside the cutting area of the cutting assembly 21, and the second guard 32 is above the cutting assembly 21. When the first guard 31 moves from the first position to the first intermediate position, the transmission assembly 33 drives the first guard 31 to translate towards the outside of the device body 10. When the first guard 31 moves from the first intermediate position to the third position, the transmission assembly 33 drives the first guard 31 to lift relative to the device body 10. When the first guard 31 moves from the third position to the second intermediate position, the transmission assembly 33 drives the first guard 31 to lift relative to the device body 10. When the first guard 31 moves from the second intermediate position to the second position, the transmission assembly 33 drives the first guard 31 to translate towards the inside of the device body 10.

[0078] For further understanding Figure 8 In some embodiments, the first guard 31 is further movable relative to the device body 10 to a first intermediate position and a second intermediate position. When the first guard 31 is in the first intermediate position, the horizontal projection of the second guard 32 is outside the cutting area of the cutting assembly 21, and the second guard 32 is below the cutting assembly 21. When the first guard 31 is in the second intermediate position, the horizontal projection of the second guard 32 is outside the cutting area of the cutting assembly 21, and the second guard 32 is above the cutting assembly 21. When the first guard 31 moves from the first position to the first intermediate position, the transmission assembly 33 drives the first guard 31 to translate towards the outside of the device body 10. When the first guard 31 moves from the first intermediate position to the third position, the transmission assembly 33 drives the first guard 31 to lift relative to the device body 10. When the first guard 31 moves from the third position to the second intermediate position, the transmission assembly 33 drives the first guard 31 to lift relative to the device body 10. When the first guard 31 moves from the second intermediate position to the second position, the transmission assembly 33 drives the first guard 31 to translate towards the inside of the device body 10.

[0079] For further understanding Figure 9 In some embodiments, the guard mechanism 30 further comprises a support 34 and a first driving member 35. The transmission assembly 33 is a linkage assembly. The support 34 is connected to the device body 10. One end of the linkage assembly is connected to the support 34, and the other end of the linkage assembly is connected to the first guard 31 or the second guard 32. The linkage assembly is above the cutting assembly 21. The first driving member 35 is connected to the linkage assembly. The first driving member 35 is used to drive the linkage assembly to swing to drive the first guard 31 to move relative to the device body 10.

[0080] In some embodiments, one end of the linkage assembly is rotatably connected to the support 34, and the other end of the linkage assembly is rotatably connected to the first protective member 31. When the first protective member 31 is in the first position, the rotatable connection between the linkage assembly and the support 34 is located above the rotatable connection between the linkage assembly and the first protective member 31.

[0081] The two ends of the connecting rod assembly are rotatably connected to the support 34 and the first protective member 31, respectively. When the first driving member 35 drives the connecting rod assembly to rotate relative to the support 34, the first protective member 31 will also rotate relative to the connecting rod assembly. When the first protective member 31 is in the first position, the rotatable connection between the connecting rod assembly and the support 34 is located above the rotatable connection between the connecting rod and the first protective member 31. When the first protective member 31 moves from the first position to the second position, the first protective member 31 tends to move outward away from the interior of the equipment body 10, thereby achieving upward movement while simultaneously driving the second protective member 32 to avoid the cutting assembly 21. When the first protective member 31 moves above the cutting assembly 21, the connecting rod assembly can continue to drive the first protective member 31 to move upward while simultaneously moving it into the interior of the equipment body 10.

[0082] Please see Figure 9 and Figure 10 In some embodiments, the linkage assembly includes a first link 331 and a second link 332. The first link 331 includes a first connecting portion 3311 and a second connecting portion 3312 spaced apart. The first connecting portion 3311 is rotatably connected to a support 34. The second connecting portion 3312 is rotatably connected to a first protective member 31 or a second protective member 32. The second link 332 includes a third connecting portion 3321 and a fourth connecting portion 3322 spaced apart. The third connecting portion 3321 is rotatably connected to the support 34. The fourth connecting portion 3322 is rotatably connected to the first protective member 31 or the second protective member 32. A first driving member 35 is disposed on the support 34. The first driving member 35 connects to the first link 331 or the second link 332 to drive the first link 331 to swing. When the first protective component 31 is in the first position, the first connecting rod 331 is located above the second connecting rod 332, the third connecting part 3321 is closer to the outside of the equipment body 10 than the first connecting part 3311, and the fourth connecting part 3322 is closer to the outside of the equipment body 10 than the second connecting part 3312.

[0083] In other embodiments, the linkage assembly may specifically consist of two sets of parallelogram linkage mechanisms, which are rotatably connected to opposite sides of the support 34 and rotatably connected to opposite sides of the first protective member 31 or the second protective member 32, respectively. This application does not limit the specific structure of the linkage assembly; it is sufficient that the linkage assembly, driving the first protective member 31, can avoid the cutting component 21.

[0084] Please see Figure 11In some embodiments, the protection mechanism 30 further comprises a guide structure 36. The guide structure 36 is arranged on the support 34. One end of a connecting rod assembly is in sliding fit with the guide structure 36 to drive the first protection piece 31 to move relative to the device body 10, and the other end of the connecting rod assembly is fixedly connected with the first protection piece 31 or the second protection piece 32. The guide track of the guide structure 36 comprises a first guide section 361 and a second guide section 362 connected in sequence. The first guide section 361 is configured to guide the first protection piece 31 to move from the first position to the third position. The second guide section 362 is configured to guide the first protection piece 31 to move from the third position to the second position. The second guide section 362 is farther away from the working surface than the first guide section 361.

[0085] By arranging the guide structure 36, the first guide section 361 and the second guide section 362 of the guide structure 36 can guide the first protection piece 31 to move between the first position and the second position, and can drive the second protection piece 32 to avoid the cutting assembly 21, thereby effectively ensuring the smooth and reliable movement of the first protection piece 31 and the second protection piece 32.

[0086] In some embodiments, the guide structure 36 can be a guide rail arranged on the support 34, or a guide groove arranged on the support 34.

[0087] In some embodiments, the guide structure 36 is a guide groove. The guide groove is arranged on the support 34. One end of the connecting rod assembly is in sliding connection with the guide groove. The first driving piece 35 drives the connecting rod assembly to slide in the guide groove.

[0088] The guide groove can convert the driving force of the first driving piece 35 into a preset track of the connecting rod assembly, so that the protection assembly 3 moves smoothly and reliably between the first position and the second position.

[0089] Please refer to Figure 11 and Figure 12 In some embodiments, the number of guide grooves is two. The two guide grooves are arranged in a spaced manner. One guide groove is a first guide groove 36a, and the other guide groove is a second guide groove 36b. The connecting rod assembly further comprises a track connecting rod 333. The track connecting rod 333 comprises a first fitting part 3331, a second fitting part 3332 and a third fitting part 3333 arranged in sequence and in a spaced manner. The first fitting part 3331 is fixedly connected with the first protection piece 31 or the second protection piece 32. The second fitting part 3332 is in sliding connection with the second guide groove 36b. The third fitting part 3333 is in sliding connection with the first guide groove 36a. The first driving piece 35 is connected with the track connecting rod 333. The first driving piece 35 drives the track connecting rod 333 to slide in the first guide groove 36a and the second guide groove 36b.

[0090] The movement of the trajectory connecting rod 333 is constrained by the two guide grooves, which helps to ensure the accuracy and repeatability of the movement trajectory of the first guard 31, and effectively eliminates the risk of shaking or jamming that may exist in single-point guiding compared to setting one guide groove.

[0091] In some embodiments, the connecting rod assembly further includes a linkage 334. The linkage 334 includes a mounting portion 3341 and a linkage portion 3342. The mounting portion 3341 is rotationally connected to the support 34. The linkage portion 3342 is provided with a linkage groove 3342a along the extension direction of the linkage 334. The third matching portion 3333 is slidingly arranged in the linkage groove 3342a. The first driving member 35 is connected to the mounting portion 3341 to drive the linkage 334 to rotate.

[0092] By connecting the linkage 334 and the third matching portion 3333 of the trajectory connecting rod 333, and then driving the linkage 334 to rotate by the first driving member 35, the rotational movement of the linkage 334 is smoothly converted into the sliding movement of the guard assembly 3 along the guide groove, further improving the stability and reliability of the movement of the guard assembly 3 relative to the equipment body 10.

[0093] Please refer to Figure 13 In some embodiments, the cutting mechanism 20 further includes a second driving member 22. The second driving member 22 is connected to the equipment body 10. The cutting assembly 21 includes a cutter disc body 211 and a cutting member 212. The cutter disc body 211 is connected to the second driving member 22. The cutting member 212 is connected to the cutter disc body 211. The cutting member 212 is at least partially located outside the cutter disc body 211. The second driving member 22 drives the cutter disc body 211 to rotate to cut the grass by the cutting member 212.

[0094] In some embodiments, the number of cutting members 212 is multiple. The multiple cutting members 212 are arranged in a rotational circumferential direction of the cutter disc body 211.

[0095] The multiple cutting members 212 can simultaneously cut the grass, which helps to improve the grass cutting efficiency of the mower 100.

[0096] Please refer to Figure 3 In some embodiments, the equipment body 10 is provided with a sealed cavity 102. The second driving member 22 is located inside the sealed cavity 102.

[0097] By arranging the second driving member 22 for driving the cutting assembly 21 to cut the grass in the sealed cavity 102 of the equipment body 10, it can prevent rainwater from entering the second driving member 22 when the mower 100 works in rainy days, and can also avoid the grass clippings generated by cutting the grass from entering the second driving member 22, thereby prolonging the service life of the second driving member 22.

[0098] Please refer to Figures 13 to 15In some embodiments, the cutting member 212 is capable of moving towards or away from the cutter head body 211 to change the cutting radius of the cutting assembly 21. When the cutting member 212 is close to the cutter head body 211, the first guard 31 is in the first position. When the cutting member 212 is away from the cutter head body 211, the first guard 31 is in the second position.

[0099] When the lawn mower 100 is mowing in an open area, the first guard 31 is in the first position to form a physical barrier between the cutting assembly 21 and the outside world, and at the same time, the cutting member 212 is close to the cutter head body 211 to reduce the cutting radius of the cutting assembly 21, thereby improving the safety of the lawn mower 100. When the lawn mower 100 is mowing the edge of a lawn or an edge area close to an obstacle, the cutting member 212 is away from the cutter head body 211 to increase the cutting radius of the cutting assembly 21, and at the same time, the first guard 31 is in the second position, so that the cutting assembly 21 can effectively cut the grass in the edge of the lawn or the edge area close to the obstacle, thereby reducing the cutting dead angle. It should be noted that the obstacle is a solid obstacle or a virtual obstacle that cannot be crossed by the lawn mower 100, and can be a stone, a tree, a wall, or a virtual forbidden area set by a user, etc., which is not limited here.

[0100] It can be understood that when the first guard 31 is in the second position, the lawn mower 100 can be in the edge area mowing operation or in the storage state, so the cutting member 212 can also be close to the cutter head body 211 to reduce the cutting radius of the cutting assembly 21, thereby facilitating storage. When the cutting member 212 is away from the cutter head body 211, the cutting area of the cutting assembly 21 becomes larger, and at this time, the lawn mower 100 must be in the state of being about to perform or performing the edge area mowing operation, i.e., the first guard 31 is in the first position.

[0101] In some embodiments, when the cutting member 212 is close to the cutter head body 211, the projection of the device body 10 covers the projection of the cutting member 212 along the rotation axis of the cutter head body 211. When the cutting member 212 is away from the cutter head body 211, the projection boundary of the cutting member 212 is tangent to the projection boundary of the device body 10 along the rotation axis of the cutter head body 211.

[0102] In other embodiments, when the cutting member 212 is close to the cutter head body 211, the projection of the device body 10 covers the projection of the cutting member 212 along the rotation axis of the cutter head body 211. When the cutting member 212 is away from the cutter head body 211, the projection boundary of the cutting member 212 is located outside the projection boundary of the device body 10 along the rotation axis of the cutter head body 211.

[0103] In other embodiments, when the cutting element 212 is close to the cutter head body 211, the projected boundary of the cutting element 212 is tangent to the projected boundary of the device body 10 along the rotation axis of the cutter head body 211. When the cutting element 212 is far away from the cutter head body 211, the projected boundary of the cutting element 212 is located outside the projected boundary of the device body 10 along the rotation axis of the cutter head body 211.

[0104] In this way, users can adjust the cutting radius of the cutting component 21 according to the actual lawn mowing needs.

[0105] Below, this application provides an embodiment of the cutting component 21 changing the cutting radius, which is not intended to limit the structure of the cutting component 21.

[0106] Please continue reading Figures 13 to 15 In some embodiments, the cutting assembly 21 further includes a telescopic member 213 and a resetting member 214. The telescopic member 213 is rotatably connected to the cutter head body 211. The cutting member 212 is connected to the telescopic member 213. The resetting member 214 is disposed between the telescopic member 213 and the cutter head body 211, and is configured to be elastically deformable. When the cutter head body 211 rotates about its axis of rotation in a first rotation direction, the telescopic member 213 rotates relative to the cutter head body 211, causing the resetting member 214 to elastically deform and move the cutting member 212 away from the cutter head body 211. When the cutter head body 211 rotates about its axis of rotation in a second rotation direction, the resetting member 214 recovers its deformation, causing the telescopic member 213 to move the cutting member 212 closer to the cutter head body 211. The first and second rotation directions are opposite.

[0107] by Figure 13 and 14 Taking the illustrated embodiment as an example, the first rotation direction is clockwise, and the second rotation direction is counterclockwise. In some embodiments, the telescopic member 213 is rotatably connected to the cutter head body 211 via a rotating shaft, and the reset member 214 is a torsion spring disposed on the rotating shaft. Figure 13 This indicates that the cutter head body 211 is in a stationary state, and at this time, both the cutting component 212 and the telescopic component 213 are defined as being in their initial positions. Please refer to [link / reference]. Figure 14 When the blade body 211 rotates clockwise, under the action of centrifugal force, the telescopic component 213 overcomes the torsion of the torsion spring and rotates around the axis, thereby driving the cutting component 212 away from the blade body 211, increasing the cutting radius of the cutting component 21 so that the lawnmower 100 can perform edge mowing operations. When the blade body 211 rotates counterclockwise, under the action of centrifugal force and torsion spring, the telescopic component 213 drives the cutting component 212 to reset and return to the initial position.

[0108] In some embodiments, the cutting member 212 and the telescopic member 213 can both be cutting blades. In other embodiments, the reset member 214 can also be a tension spring, and the present application does not limit this.

[0109] Please refer to Figure 14 and Figure 15 In some embodiments, the cutting assembly 21 further comprises a locking member 215 and an elastic member 216. The locking member 215 is slidingly connected to the cutter body 211. The elastic member 216 is arranged between the cutter body 211 and the locking member 215. The elastic member 216 is configured to provide an elastic force to the locking member 215 so that the locking member 215 is at least partially located in the rotation path of the telescopic member 213. When the cutter body 211 rotates in the first rotation direction, the telescopic member 213 overcomes the elastic force of the elastic member 216 to disengage from the locking member 215, and rotates relative to the cutter body 211 against the elastic force of the reset member 214. When the cutter body 211 rotates in the second rotation direction, the telescopic member 213 rotates to abut against the locking member 215 and overcome the elastic force, and the locking member 215 stops the cutting member 212 from moving away from the cutter body 211.

[0110] With the locking member 215 and the elastic member 216, the cooperation of the locking member 215 and the elastic member 216 can provide reliable mechanical stop, ensure that the cutting member 212 can be reliably locked, prevent the telescopic member 213 from accidentally rotating relative to the cutter body 211, and avoid accidental movement of the cutting member 212 away from the cutter body 211 to cause injury or damage, etc.

[0111] In some embodiments, the cutter body 211 is provided with a receiving groove 2110, and when the cutting member 212 is close to the cutter body 211, the telescopic member 213 is located in the receiving groove 2110. Figure 14 For example, in the illustrated embodiment, the side of the telescopic member 213 away from the receiving groove 2110 is an arc surface 2130. When the telescopic member 213 is located in the receiving groove 2110, the arc surface 2130 of the telescopic member 213 and the circumferential side of the cutter body 211 form a smooth transition. In this way, the horizontal projection of the overall structure composed of the telescopic member 213 and the cutter body 211 can be a circle, and the outer contour is smoother, which helps to reduce the risk of grass clippings being stuck in the cutting assembly 21.

[0112] It can be understood that when the number of cutting members 212 is multiple, the number of telescopic members 213, reset members 214, locking members 215, elastic members 216, and receiving grooves 2110 is also multiple.

[0113] In addition, those skilled in the art should understand that the above embodiments are only used to illustrate the present application, and are not used as a limitation to the present application, and as long as the above embodiments are within the spirit and scope of the present application, any suitable changes and modifications made to the above embodiments are within the disclosure range of the present application.

Claims

1. A lawnmower characterised in that, The device comprises: a device body; a cutting mechanism comprising a cutting assembly arranged below the device body; a protection mechanism comprising a transmission assembly arranged on the device body and a protection assembly connected to the transmission assembly, the transmission assembly being configured to drive the protection assembly to move relative to the device body; the protection assembly has at least a first position and a second position; when the protection assembly is in the first position, the protection assembly extends out of the device body and forms a partial protection for the periphery of the cutting assembly; when the protection assembly is in the second position, the protection assembly is above the cutting assembly and the horizontal projection of the protection assembly and the horizontal projection of the cutting assembly at least partially overlap; when the protection assembly moves between the first position and the second position, the protection assembly has a gap with the cutting assembly.

2. The lawnmower as claimed in claim 1, characterized in that The protection assembly further has a third position; the movement trajectory of the protection assembly between the first position and the second position includes at least an inflection point; when the protection assembly moves to the inflection point, the protection assembly is in the third position, and the third position is configured to make the movement trajectory of the protection assembly bypass the outside of the cutting assembly.

3. The lawnmower of claim 2, wherein, When the protection assembly moves from the first position to the third position, the protection assembly continuously moves away from the cutting assembly in the horizontal direction; when the protection assembly moves from the third position to the second position, the protection assembly continuously moves towards the cutting assembly in the horizontal direction; When the protection assembly moves from the first position to the second position, the protection assembly continuously rises in the vertical direction.

4. The lawnmower as claimed in claim 1, characterized in that When the protection assembly is in the first position, the horizontal height of the protection assembly is lower than the cutting height of the cutting assembly.

5. The mower of claim 1, wherein, The protection assembly comprises a first protection member, the first protection member is connected to the transmission assembly, and the transmission assembly drives the first protection member to move relative to the device body; When the first protection member is in the first position, the horizontal projection of the first protection member is outside the horizontal projection of the cutting assembly, and the first protection member forms a lateral protection for the horizontal height position of the cutting assembly; When the first protection member is in the second position, the horizontal projection of the device body covers the horizontal projection of the first protection member.

6. The lawnmower as claimed in claim 5, characterized in that The protection assembly further comprises a second protection member connected to the bottom of the first protection member to move together with the first protection member, and the second protection member extends towards the inside of the device body; When the first protection member is in the first position, the horizontal projection of the second protection member and the horizontal projection of the cutting assembly at least partially overlap, and the second protection member forms a bottom protection for the cutting assembly; When the first protection member is in the second position, the horizontal projection of the device body covers the horizontal projection of the second protection member.

7. The lawnmower of claim 6, wherein, The first protection member can further move to a third position relative to the device body; The horizontal projection of the second guard and the horizontal projection of the cutting assembly are separated when the first guard is in the third position.

8. The lawnmower of claim 7, wherein, When the first guard moves from the first position to the third position, the transmission assembly drives the first guard to move outward of the device body while lifting relative to the device body. When the first guard moves from the third position to the second position, the transmission assembly drives the first guard to move inward of the device body while lifting relative to the device body.

9. The lawnmower of claim 8, wherein, When the first guard moves from the second position to the third position, the transmission assembly drives the first guard to move outward of the device body while lowering relative to the device body. When the first guard moves from the third position to the first position, the transmission assembly drives the first guard to move inward of the device body while lowering relative to the device body.

10. The lawnmower of claim 8 or 9, characterized in that The guard mechanism further comprises a support and a first driving member, the transmission assembly is a linkage assembly; the support is connected with the device body; one end of the linkage assembly is connected with the support, and the other end of the linkage assembly is connected with the first guard or the second guard; the linkage assembly is located above the cutting assembly; The first driving member is connected with the linkage assembly, and the first driving member is used to drive the linkage assembly to swing so as to drive the first guard to move relative to the device body.

11. The lawnmower as claimed in claim 10, characterized in that One end of the linkage assembly is rotationally connected with the support, and the other end of the linkage assembly is rotationally connected with the first guard or the second guard. When the first guard is in the first position, the rotational connection between the linkage assembly and the support is located above the rotational connection between the linkage assembly and the first guard.

12. The lawn mower of claim 11, wherein, The linkage assembly comprises a first linkage and a second linkage; the first linkage comprises a first connecting portion and a second connecting portion which are arranged at intervals, the first connecting portion is rotationally connected with the support, and the second connecting portion is rotationally connected with the first guard or the second guard; the second linkage comprises a third connecting portion and a fourth connecting portion which are arranged at intervals, the third connecting portion is rotationally connected with the support, and the fourth connecting portion is rotationally connected with the first guard or the second guard; the first driving member is arranged on the support, and the first driving member is connected with the first linkage or the second linkage to drive the first linkage to swing; When the first guard is in the first position, the first linkage is located above the second linkage; the third connecting portion is closer to the outer side of the device body than the first connecting portion, and the fourth connecting portion is closer to the outer side of the device body than the second connecting portion.

13. The lawn mower of claim 10, wherein, The guard mechanism further comprises a guide structure, the guide structure is arranged on the support, one end of the linkage assembly is slidingly matched with the guide structure to drive the first guard to move relative to the device body, and the other end of the linkage assembly is fixedly connected with the first guard or the second guard. The guide track of the guide structure comprises a first guide segment and a second guide segment connected in sequence, the first guide segment is configured to guide the first guard to move from the first position to the third position, the second guide segment is configured to guide the first guard to move from the third position to the second position, and the second guide segment is farther away from the work surface than the first guide segment.

14. The lawn mower of claim 13, wherein, The guide structure is a guide groove, and the guide groove is arranged on the support; one end of the connecting rod assembly is in sliding connection with the guide groove, and the first driving member drives the connecting rod assembly to slide in the guide groove.

15. The lawn mower of claim 14, wherein, The number of the guide grooves is two, and the two guide grooves are arranged at intervals, one of the guide grooves is a first guide groove, and the other of the guide grooves is a second guide groove. The connecting rod assembly further comprises a track connecting rod, the track connecting rod comprises a first fitting part, a second fitting part and a third fitting part arranged at intervals in sequence; the first fitting part is fixedly connected with the first guard or the second guard, the second fitting part is in sliding connection with the second guide groove, and the third fitting part is in sliding connection with the first guide groove. The first driving member is connected with the track connecting rod, and the first driving member drives the track connecting rod to slide in the first guide groove and the second guide groove.

16. The lawn mower of claim 15, wherein, The connecting rod assembly further comprises a linkage member, the linkage member comprises a mounting part and a linkage part; the mounting part is in rotary connection with the support, the linkage part is provided with a linkage groove in the extension direction of the linkage member, and the third fitting part is arranged in sliding connection in the linkage groove; and the first driving member is connected with the mounting part to drive the linkage member to rotate.

17. The lawn mower of claim 1, wherein, The cutting mechanism further comprises a second driving member connected with the equipment main body; the cutting assembly comprises a cutter disc main body and a cutting member, the cutter disc main body is connected with the second driving member, and the cutting member is connected with the cutter disc main body; the cutting member is at least partially located outside the cutter disc main body, and the second driving member drives the cutter disc main body to rotate to cut grass by the cutting member.

18. The lawnmower as claimed in claim 17, characterized in that The number of the cutting members is multiple, and the multiple cutting members are arranged at intervals in the rotary circumferential direction of the cutter disc main body.

19. The lawn mower of claim 17, wherein, The equipment main body is provided with a sealed cavity, and the second driving member is located inside the sealed cavity.

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