Lawn mower

Abstract

This application provides a lawnmower. The lawnmower includes a main body, a cutting mechanism, and a protective mechanism. The cutting mechanism includes a cutting component, which is disposed below the main body. The protective mechanism includes a transmission component and a protective component. The transmission component is disposed on the main body and connected to the protective component. The transmission component drives the protective component to move relative to the main body. The protective component has at least a first position and a second position. When the protective component is in the first position, it extends out of the main body and provides partial protection to the periphery of the cutting component. When the protective component is in the second position, it is positioned above the cutting component, and the horizontal projection of the protective component and the horizontal projection of the cutting component at least partially overlap. When the protective component moves between the first and second positions, there is a gap between the protective component and the cutting component. This application can solve the technical problem that the installation of the protective component causes blind spots in the cutting of the lawnmower.

Description

Technical Field

[0001] This application relates to the field of lawnmower technology, and more specifically, to a lawnmower. Background Technology

[0002] The cutting mechanism of a lawnmower is typically spaced apart from the machine body to prevent direct contact between the cutting mechanism and the user. However, because the cutting mechanism is at a certain height above the ground, users may still accidentally stick their feet into the machine body. Therefore, related technologies include protective covers on the sides and bottom of the cutting mechanism to provide a physical barrier. However, these protective covers can make it difficult for the lawnmower to cut grass at the edges of the lawn or near walls, creating blind spots. Summary of the Invention

[0003] In view of this, this application provides a lawnmower to solve the technical problem that the setting of protective parts causes the lawnmower to have a cutting blind spot.

[0004] One embodiment of this application provides a lawnmower. The lawnmower includes a main body, a cutting mechanism, and a protective mechanism. The cutting mechanism includes a cutting component. The cutting component is disposed below the main body. The protective mechanism includes a transmission component and a protective component. The transmission component is disposed on the main body. The transmission component is connected to the protective component. The transmission component is used to drive the protective component to move relative to the main body. The protective component has at least a first position and a second position. When the protective component is in the first position, it extends out of the main body and provides partial protection to the periphery of the cutting component. When the protective component is in the second position, it is located above the cutting component, and the horizontal projection of the protective component and the horizontal projection of the cutting component at least partially overlap. When the protective component moves between the first and second positions, there is a gap between the protective component and the cutting component.

[0005] When the protective component is in the first position, by extending it beyond the main body of the equipment and providing partial protection to the periphery of the cutting component, it effectively prevents operators or animals from accidentally contacting the working cutting component during mowing, reducing safety risks during lawnmower use. When the protective component is in the second position, by moving it above the cutting component with its horizontal projection at least partially overlapping with the horizontal projection of the cutting component, the protective component no longer directly provides lateral protection to the cutting component. This allows the cutting component to cut closer to the edge area, helping to reduce blind spots. Simultaneously, the protective component maintains a gap with the cutting component throughout its movement between the first and second positions, ensuring that it does not interfere with the working cutting component during movement and improving the overall reliability of the lawnmower.

[0006] In some embodiments, the protective component further has a third position. The movement trajectory of the protective component between the first and second positions includes at least one inflection point. When the protective component moves to the inflection point, it is in the third position. The third position is configured such that the movement trajectory of the protective component bypasses the outer side of the cutting component.

[0007] When the protective component moves between the first and second positions, the transmission component drives the protective component through the third position, ensuring that the protective component does not interfere with the cutting component, thereby improving the stability and reliability of the protective component's movement and preventing damage to the cutting component.

[0008] In some embodiments, when the protective component moves from the first position to the third position, it continuously moves away from the cutting component in the horizontal direction. When the protective component moves from the third position to the second position, it continuously moves closer to the cutting component in the horizontal direction. When the protective component moves from the first position to the second position, it continuously rises in the vertical direction.

[0009] As the protective component moves from the first position to the second position, its movement trajectory—first horizontally outward, then horizontally inward, and simultaneously upward throughout—ensures that the protective component safely avoids the cutting component, completely eliminating the risk of movement interference between them. The protective component then retracts inward to directly above the cutting component, achieving a compact overall structure for the lawnmower while ensuring safe movement.

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

[0011] By setting the horizontal height of the protective component in the first position to be lower than the cutting height, the protective component can form a physical barrier below the cutting component, thereby effectively blocking, triggering in advance, or intercepting debris such as gravel and branches that fly from the side of the lawnmower at a low angle, or prioritizing the support or blocking of foreign objects when the blades accidentally collide with hard objects, thus improving the safety of the lawnmower.

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

[0013] By positioning the first protective component in its first position, it provides lateral protection for the cutting assembly, effectively preventing obstacles from contacting the cutting assembly. This is suitable for lawnmowers operating in open areas or in work areas where users or pets may be nearby, ensuring the lawnmower meets safety standards. In its second position, the horizontal projection of the main body of the device covers the horizontal projection of the first protective component, which is completely retracted into the main body. The first protective component does not obstruct the operation of the cutting assembly, facilitating edge cutting and reducing blind spots. The retraction of the first protective component also makes the lawnmower more compact, facilitating transport and storage.

[0014] In some embodiments, the protective assembly further includes a second protective member. The second protective member is connected to the bottom of the first protective member to move with it. The second protective member extends toward the interior of the device body. When the first protective member is in a first position, the horizontal projection of the second protective member at least partially overlaps with the horizontal projection of the cutting assembly, forming bottom protection for the cutting assembly. When the first protective member is in a second position, the horizontal projection of the device body covers the horizontal projection of the second protective member.

[0015] When the first protective component is in the first position, the horizontal projection of the second protective component at least partially overlaps with the cutting assembly. The second protective component effectively protects the cutting assembly from the bottom, preventing debris and other contaminants from flying upwards and avoiding accidental contact between the cutting assembly and the user's feet, thus improving the operational safety of the lawnmower. Simultaneously, because the second protective component moves synchronously with the first protective component, it can be completely retracted into the main body of the equipment when in the second position, allowing the cutting assembly to perform better edge cutting and reducing blind spots caused by the presence of the protective component.

[0016] In some embodiments, the first protective member can also be moved relative to the main body of the equipment to a third position. When the first protective member is in the third position, the horizontal projection of the second protective member and the horizontal projection of the cutting assembly are separate.

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

[0018] In some embodiments, when the first protective member moves from the first position to the third position, the transmission assembly drives the first protective member to move outward of the equipment body while simultaneously lifting it relative to the equipment body. When the first protective member moves from the third position to the second position, the transmission assembly drives the first protective member to move inward of the equipment body while simultaneously lifting it relative to the equipment body.

[0019] When the first protective component moves from the first position to the third position, it moves outward while continuously rising, allowing the protective assembly to smoothly disengage from the first position and effectively avoid lateral obstacles. When the first protective component moves from the third position to the second position, it retracts inward while rising, helping the protective assembly to be housed within the main body of the equipment via the most direct path, thus achieving stable and interference-free movement of the protective assembly relative to the main body of the equipment.

[0020] In some embodiments, when the first protective member moves from the second position to the third position, the transmission assembly drives the first protective member to move outward from the equipment body while simultaneously descending relative to the equipment body. When the first protective member moves from the third position to the first position, the transmission assembly drives the first protective member to move inward from the equipment body while simultaneously descending relative to the equipment body.

[0021] When the first protective component moves from the second position through the third position to the first position, by making the first protective component move horizontally outward first and then horizontally inward, and descending throughout the entire process, it helps to ensure that the protective component can protect the cutting component without interfering with it.

[0022] In some embodiments, the protective mechanism further includes a support and a first drive member. The transmission assembly is a linkage assembly. The support is connected to the equipment 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 or second protective member. The linkage assembly is located above the cutting assembly. The first drive member is connected to the linkage assembly. The first drive member is used to drive the linkage assembly to swing, thereby causing the first protective member to move relative to the equipment 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 protective member. When the first protective member 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 protective member.

[0024] The two ends of the linkage assembly are rotatably connected to the support and the first protective member, respectively. When the first driving member drives the linkage assembly to rotate relative to the support, the first protective member also rotates relative to the linkage assembly. When the first protective member is in the first position, the rotatable connection between the linkage assembly and the support is located above the rotatable connection between the linkage and the first protective member. When the first protective member moves from the first position to the second position, it tends to move outward away from the interior of the equipment body, thus achieving upward movement while simultaneously driving the second protective member to avoid the cutting assembly. When the first protective member moves above the cutting assembly, the linkage assembly can continue to drive the first protective member upward while simultaneously moving it inward towards the interior of the equipment body.

[0025] In some embodiments, the linkage assembly includes a first link and a second link. The first link includes a first connecting portion and a second connecting portion spaced apart. The first connecting portion is rotatably connected to a support. The second connecting portion is rotatably connected to a first protective member or a second protective member. The second link includes a third connecting portion and a fourth connecting portion spaced apart. The third connecting portion is rotatably connected to the support. The fourth connecting portion is rotatably connected to the first protective member or the second protective member. A first driving member is disposed on the support. The first driving member connects to the first link or the second link to drive the first link to swing. When the first protective member is in a first position, the first link is located above the second link, 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.

[0026] In some embodiments, the protective mechanism further includes a guide structure. The guide structure is disposed on a support. One end of a linkage assembly slides with the guide structure to drive the first protective member to move relative to the equipment body, and the other end of the linkage assembly is fixedly connected to the first or second protective member. The guide trajectory 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 protective member from a first position to a third position. The second guide segment is configured to guide the first protective member from the third position to a second position. The second guide segment is farther from the working surface than the first guide segment.

[0027] By setting a guide structure, the first guide section and the second guide section of the guide structure can guide the first protective component to move between the first position and the second position, and drive the second protective component to avoid the cutting component, effectively ensuring the smooth and reliable movement of the first protective component and the second protective component.

[0028] In some embodiments, the guide structure is a guide groove. The guide groove is disposed on the support. One end of the linkage assembly is slidably connected to the guide groove. A first drive member drives the linkage assembly to slide within the guide groove.

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

[0030] In some embodiments, the number of guide slots is two. The two guide slots are spaced apart. One guide slot is a first guide slot, and the other guide slot is a second guide slot. The linkage assembly also includes a trajectory link. The trajectory link includes a first mating portion, a second mating portion, and a third mating portion arranged sequentially at intervals. The first mating portion is fixedly connected to a first protective member or a second protective member. The second mating portion is slidably connected to the second guide slot. The third mating portion is slidably connected to the first guide slot. A first driving member is connected to the trajectory link. The first driving member drives the trajectory link to slide within the first guide slot and the second guide slot.

[0031] By constraining the movement of the trajectory link together with two guide grooves, it helps to ensure the accuracy and repeatability of the movement trajectory of the first protective component. Compared with setting a single guide groove, it effectively eliminates the risk of shaking or jamming that may exist in single-point guidance.

[0032] In some embodiments, the linkage assembly further includes a linkage member. The linkage member includes a mounting portion and a linkage portion. The mounting portion and the support are rotatably connected. The linkage portion has a linkage groove along the extension direction of the linkage member. A third mating portion is slidably disposed within the linkage groove. A first driving member is connected to the mounting portion to drive the linkage member to rotate.

[0033] By connecting the linkage and the third mating part of the track link, and then driving the linkage to rotate by the first driving member, the rotational motion of the linkage is smoothly converted into the sliding of the protective component along the guide groove, thereby further improving the stability and reliability of the movement of the protective component relative to the main body of the equipment.

[0034] In some embodiments, the cutting mechanism further includes a second drive member. The second drive member is connected to the device body. The cutting assembly includes a blade disc body and a cutting element. The blade disc body and the second drive member are connected. The cutting element is connected to the blade disc body. The cutting element is at least partially located outside the blade disc body. The second drive member drives the blade disc body to rotate so that the cutting element cuts grass.

[0035] In some embodiments, the number of cutting elements is multiple. These multiple cutting elements are spaced apart circumferentially around the main body of the cutting disc.

[0036] Multiple cutting pieces can cut grass simultaneously, which helps improve the grass-cutting efficiency of the lawnmower.

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

[0038] By placing the second drive unit for driving the cutting assembly within a sealed cavity of the main body of the device, rainwater can be prevented from entering the second drive unit when the lawnmower is working on rainy days. This also prevents grass clippings from entering the second drive unit, thereby extending the service life of the second drive unit. Attached Figure Description

[0039] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation on the scope.

[0040] Figure 1 This is a schematic diagram of the protective component in a first position according to an embodiment of this application;

[0041] Figure 2 This is a schematic diagram showing the protective component in a second position according to one embodiment of this application;

[0042] Figure 3 This is a schematic diagram showing the first protective member in a first position according to an embodiment of this application;

[0043] Figure 4 This is a schematic diagram showing the first protective member in the second position in one embodiment of this application;

[0044] Figure 5 This is a schematic diagram of the trajectory of the protective component relative to the main body of the device in one embodiment of this application;

[0045] Figure 6 This is a schematic diagram of the trajectory of the protective component relative to the main body of the device in one embodiment of this application;

[0046] Figure 7 This is a schematic diagram of the trajectory of the protective component relative to the main body of the device in one embodiment of this application;

[0047] Figure 8 This is a schematic diagram of the trajectory of the protective component relative to the main body of the device in one embodiment of this application;

[0048] Figure 9 This is a schematic diagram of the structure of a linkage assembly provided in an embodiment of this application;

[0049] Figure 10 This is a schematic diagram of the structure of a linkage assembly provided in an embodiment of this application;

[0050] Figure 11 This is a schematic diagram of the guiding structure provided in one embodiment of this application;

[0051] Figure 12 This is a schematic diagram of the guiding structure provided in one embodiment of this application;

[0052] Figure 13 A schematic diagram of the structure of the cutting element near the main body of the cutter head in one embodiment of this application;

[0053] Figure 14 This is a schematic diagram of the structure of the cutting element away from the main body of the cutter head in one embodiment of this application;

[0054] Figure 15 This is a partial structural diagram of the cutting component.

[0055] Explanation of key component symbols:

[0056] 100. Lawn mower; 10. Equipment body; 101. Clearance opening; 102. Sealed cavity; 20. Cutting mechanism; 21. Cutting assembly; 211. Blade disc body; 2110. Receiving groove; 212. Cutting component; 213. Telescopic component; 2130. Arc-shaped surface; 214. Reset component; 215. Locking component; 216. Elastic component; 22. Second driving component; 30. Protective mechanism; 3. Protective assembly; 31. First protective component; 32. Second protective component; 33. Transmission assembly; 331. First connecting rod; 3311. First connecting part; 3 312. Second connecting part; 332. Second connecting rod; 3321. Third connecting part; 3322. Fourth connecting part; 333. Track connecting rod; 3331. First mating part; 3332. Second mating part; 3333. Third mating part; 334. Linkage component; 3341. Mounting part; 3342. Linkage part; 3342a. Linkage groove; 34. Support; 35. First driving component; 36. Guide structure; 361. First guide section; 362. Second guide section; 36a. First guide groove; 36b. Second guide groove; O. Inflection point. Detailed Implementation

[0057] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0058] 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. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0059] The terms “first,” “second,” and “third” are used for descriptive purposes only and should not be interpreted as indicating or implying relative importance.

[0060] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intervening component present. When a component is considered to be "located" on another component, it can be directly located on the other component or there may be an intervening component present.

[0061] Embodiments of this application provide a lawnmower. The lawnmower includes a main body, a cutting mechanism, and a protective mechanism. The cutting mechanism includes a cutting component. The cutting component is disposed below the main body. The protective mechanism includes a transmission component and a protective component. The transmission component is disposed on the main body. The transmission component is connected to the protective component. The transmission component is used to drive the protective component to move relative to the main body. The protective component has at least a first position and a second position. When the protective component is in the first position, it extends out of the main body and provides partial protection to the periphery of the cutting component. When the protective component is in the second position, it is located above the cutting component, and the horizontal projection of the protective component and the horizontal projection of the cutting component at least partially overlap. When the protective component moves between the first and second positions, there is a gap between the protective component and the cutting component.

[0062] When the protective component is in the first position, by extending it beyond the main body of the equipment and providing partial protection to the periphery of the cutting component, it effectively prevents operators or animals from accidentally contacting the working cutting component during mowing, reducing safety risks during lawnmower use. When the protective component is in the second position, by moving it above the cutting component with its horizontal projection at least partially overlapping with the horizontal projection of the cutting component, the protective component no longer directly provides lateral protection to the cutting component. This allows the cutting component to cut closer to the edge area, helping to reduce blind spots. Simultaneously, the protective component maintains a gap with the cutting component throughout its movement between the first and second positions, ensuring that it does not interfere with the working cutting component during movement and improving the overall reliability of the lawnmower.

[0063] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0064] Please see Figure 1 and Figure 2One embodiment of this application provides a lawnmower 100. The lawnmower 100 includes a device body 10, a cutting mechanism 20, and a protective mechanism 30. The cutting mechanism 20 includes a cutting component 21. The cutting component 21 is disposed below the device body 10. The protective mechanism 30 includes a transmission component 33 and a protective component 3. The transmission component 33 is disposed on the device body 10. The transmission component 33 is connected to the protective component 3. The transmission component 33 is used to drive the protective component 3 to move relative to the device body 10. The protective component 3 has at least a first position and a second position. When the protective component 3 is in the first position, the protective component 3 extends out of the device body 10 and forms partial protection for the periphery of the cutting component 21. When the protective component 3 is in the second position, the protective component 3 is located above the cutting component 21, and the horizontal projection of the protective component 3 and the horizontal projection of the cutting component 21 at least partially overlap. When the protective component 3 moves between the first position and the second position, there is a gap between the protective component 3 and the cutting component 21.

[0065] When the protective component 3 is in the first position, by extending the protective component 3 out of the main body 10 of the equipment and providing partial protection to the periphery of the cutting component 21, it effectively prevents operators or animals from accidentally contacting the working cutting component 21 during mowing, reducing the safety risks during the use of the lawnmower 100. When the protective component 3 is in the second position, by moving the protective component 3 above the cutting component 21, and ensuring that the horizontal projection of the protective component 3 and the horizontal projection of the cutting component 21 at least partially overlap, the protective component 3 no longer directly provides lateral protection to the cutting component 21, allowing the cutting component 21 to perform mowing operations closer to the edge area, which helps reduce cutting blind spots. Simultaneously, the protective component 3 maintains a gap with the cutting component 21 throughout its movement between the first and second positions, helping to ensure that the protective component 3 does not interfere with the working cutting component 21 during movement, improving the overall reliability of the lawnmower 100.

[0066] Understandably, when the protective component 3 is in the first position, while providing lateral protection to the cutting component 21, it also forms a physical barrier on the outside of the cutting component 21. When the lawnmower 100 is cutting the edges, the cutting component 21 struggles to cut the grass at the edges of the lawn or near obstacles, creating a cutting blind spot. Therefore, when the lawnmower 100 is cutting the grass at the edges of the lawn or near obstacles, the transmission component 33 moves the protective component 3 to the second position to reduce cutting blind spots.

[0067] In this application, the horizontal projection of the protective component 3 refers to the orthographic projection of the protective component 3 along the vertical direction of the lawnmower 100 when the lawnmower 100 is in motion. The same applies to other components involving horizontal projection. When the protective component 3 is in the first position, the protective component 3 provides partial protection to the periphery of the cutting component 21. This can be understood as the horizontal projection of the protective component 3 being at least partially located outside the cutting component 21 when the protective component 3 is in the first position.

[0068] It should be noted that, in order to improve the cutting effect of the lawnmower 100 at the edge of the lawn or near the edge of obstacles, the active driving cutting component 21 can be moved to the outside of the lawnmower 100 body 10 to increase the mowing coverage and reduce cutting dead angles. However, by actively driving the cutting component 21 to move to the outside of the body 10, there is a possibility of damage to the core components of the lawnmower 100 due to the movement of the cutting component 21, and it may also cause waterproofing problems for the body 100, thus affecting the service life of the lawnmower 100. This application improves the mowing coverage of the lawnmower 100 when cutting at the edge by changing the position relationship between the protective component 3 and the cutting component 21, and also improves the maintainability of the lawnmower 100, avoiding the risks caused by changing the position of the cutting component 21, and helping to extend the product life of the lawnmower 100.

[0069] In some embodiments, the cutting component 21 may be a rotary cutting form, or it may be an electric shear cutting, roller cutting, etc.

[0070] Please see Figure 5 , Figure 5 This diagram illustrates the trajectory of the protective component 3 moving from the first position to the second position in some embodiments. It can be understood that... Figure 5 The reverse of the trajectory shown is the trajectory of the protective component 3 moving from the second position to the first position. The protective component 3 also has a third position. The movement trajectory of the protective component 3 between the first and second positions includes at least one inflection point O. When the protective component 3 moves to the inflection point O, the protective component 3 is in the third position. The third position is configured such that the movement trajectory of the protective component 3 bypasses the outside of the cutting component 21.

[0071] When the protective component 3 moves between the first position and the second position, the transmission component 33 drives the protective component 3 through the third position, ensuring that the protective component 3 will not interfere with the cutting component 21, thereby improving the stability and reliability of the movement of the protective component 3 and preventing damage to the cutting component 21.

[0072] In some embodiments, when the protective component 3 moves from the first position to the third position, in the horizontal direction, the protective component 3 continuously moves away from the cutting component 21. When the protective component 3 moves from the third position to the second position, in the horizontal direction, the protective component 3 continuously moves closer to the cutting component 21. When the protective component 3 moves from the first position to the second position, in the vertical direction, the protective component 3 continuously rises.

[0073] When the protective component 3 moves from the first position to the second position, its movement trajectory—first horizontally outward, then horizontally inward, and simultaneously upward throughout—ensures that the protective component 3 can safely avoid the cutting component 21, completely eliminating the risk of movement interference between the protective component 3 and the cutting component 21. The protective component 3 then retracts inward to directly above the cutting component 21, achieving a compact overall structure for the lawnmower 100 while ensuring movement safety.

[0074] In some embodiments, the gap between the protective component 3 and the cutting component 21 is largest when the protective component 3 is in the third position. In other embodiments, the distance between the protective component 3 and the cutting component 21 is largest in the horizontal direction when the protective component 3 is in the third position.

[0075] In some embodiments, when the protective component 3 is in the first position, the horizontal height of the protective component 3 is lower than the cutting height of the cutting component 21. Here, the cutting height of the cutting component 21 can be understood as the height of the grass after mowing; it can also refer to the height of the cutting component 21 from the working surface. The horizontal height of the protective component 3 can be understood as the height of the protective component 3 from the working surface. The working surface can be understood as the ground or the lawn surface.

[0076] By setting the horizontal height of the protective component 3 in the first position to be lower than the cutting height, the protective component 3 can form a physical barrier below the cutting component 21, thereby effectively blocking, triggering in advance or intercepting debris such as gravel and branches that are splashed from the side at a low angle from the lawnmower 100, or prioritizing the support or blocking of foreign objects when the blade accidentally collides with a hard object, thus improving the safety of the lawnmower 100.

[0077] Please see Figure 3 and Figure 4In some embodiments, the protective component 3 includes a first protective member 31. The first protective member 31 is connected to a transmission component 33. The transmission component 33 drives the first protective member 31 to move relative to the device body 10. When the first protective member 31 is in a first position, its horizontal projection is outside the horizontal projection of the cutting component 21, providing lateral protection to the horizontal height of the cutting component 21. When the first protective member 31 is in a second position, the horizontal projection of the device body 10 covers the horizontal projection of the first protective member 31. It should be noted that when the first protective member 31 is in the first position, the horizontal projection of the first protective member 31 being outside the horizontal projection of the cutting component 21 can mean that the entire horizontal projection of the first protective member 31 is outside the horizontal projection of the cutting component 21, or that only a portion of it is outside the horizontal projection of the cutting component 21.

[0078] By positioning the first protective member 31 in the first position, it provides lateral protection for the cutting assembly 21, effectively preventing obstacles from contacting the cutting assembly 21. This is suitable for situations where the lawnmower 100 is mowing in open areas or in work areas where users, pets, or other objects may approach, ensuring that the lawnmower 100 meets safety standards. In the second position, the horizontal projection of the main body 10 covers the horizontal projection of the first protective member 31, which is completely housed within the main body 10. The first protective member 31 does not obstruct the operation of the cutting assembly 21, facilitating edge cutting operations and reducing blind spots. The retraction of the first protective member 31 also makes the lawnmower 100 more compact, facilitating its transport and storage.

[0079] Please see Figure 1 In some embodiments, a clearance opening 101 is provided on the side of the device body 10. When the first protective member 31 is in the second position, the first protective member 31 is retracted into the interior of the device body 10 through the clearance opening 101.

[0080] By providing a clearance opening 101 on the side of the device body 10, the first protective member 31 can retract into the device body 10 via the clearance opening 101 when it moves from the first position to the second position relative to the device body 10. Compared to not providing a clearance opening 101, the first protective member 31 would have to move to the second position without interfering with the cutting assembly 21, which would increase the lateral dimension of the entire lawnmower 100. The provision of the clearance opening 101 can make the lawnmower 100 more compact in structure.

[0081] Please see Figure 3 and Figure 4In some embodiments, the protective component 3 further includes a second protective member 32. The second protective member 32 is connected to the bottom of the first protective member 31 and moves with the first protective member 31. The second protective member 32 extends toward the interior of the device body 10. When the first protective member 31 is in a first position, the horizontal projection of the second protective member 32 at least partially overlaps with the horizontal projection of the cutting component 21, forming bottom protection for the cutting component 21. When the first protective member 31 is in a second position, the horizontal projection of the device body 10 covers the horizontal projection of the second protective member 32.

[0082] When the first protective member 31 is in the first position, the horizontal projection of the second protective member 32 at least partially overlaps with the cutting assembly 21. The second protective member 32 provides effective protection for the cutting assembly 21 from the bottom, effectively preventing gravel and debris below the cutting assembly 21 from flying upwards, and also effectively preventing accidental contact between the cutting assembly 21 and the user's feet, thus improving the operational safety of the lawnmower 100. Simultaneously, since the second protective member 32 moves synchronously with the first protective member 31, in the second position it can be completely retracted into the interior of the main body 10 along with the first protective member 31. This allows the cutting assembly 21 to perform better edge cutting, reducing cutting dead angles caused by the presence of the protective member 31.

[0083] In some embodiments, the first protective member 31 and the second protective member 32 may be integrally formed.

[0084] Please see Figures 5 to 8 In some embodiments, the first protective member 31 can also move relative to the main body 10 to a third position. When the first protective member 31 is in the third position, the horizontal projection of the second protective member 32 and the horizontal projection of the cutting assembly 21 are separate.

[0085] Since the second protective member 32 is connected to the bottom of the first protective member 31 and extends toward the interior of the main body 10 of the equipment, when the first protective member 31 is in the third position, by making the horizontal projection of the second protective member 32 separate from the horizontal projection of the cutting component 21, it can be ensured that the second protective member 32 will not interfere with the cutting component 21 when the first protective member 31 moves between the first position and the second position, thereby improving the stability and reliability of the movement of the protective component 3 and avoiding damage to the cutting component 21.

[0086] Please see Figure 5 In some embodiments, when the first protective member 31 moves from the first position to the third position, the transmission assembly 33 drives the first protective member 31 to move outward of the equipment body 10 while simultaneously lifting it relative to the equipment body 10. When the first protective member 31 moves from the third position to the second position, the transmission assembly 33 drives the first protective member 31 to move inward of the equipment body 10 while simultaneously lifting it relative to the equipment body 10.

[0087] When the first protective member 31 moves from the first position to the third position, it moves outward while continuously rising, which allows the protective component 3 to smoothly leave the first position and effectively avoid side obstacles. When the first protective member 31 moves from the third position to the second position, it retracts inward while rising, which helps the protective component 3 to be stored in the main body 10 of the equipment via the most direct path, thus achieving a smooth and interference-free movement of the protective component 3 relative to the main body 10 of the equipment.

[0088] In some embodiments, when the first protective member 31 moves from the second position to the third position, the transmission assembly 33 drives the first protective member 31 to move outward of the device body 10 while simultaneously descending relative to the device body 10. When the first protective member 31 moves from the third position to the first position, the transmission assembly 33 drives the first protective member 31 to move inward of the device body 10 while simultaneously descending relative to the device body 10.

[0089] When the first protective component 31 moves from the second position through the third position to the first position, by making the first protective component 31 move horizontally outward first and then horizontally inward, and descend throughout the entire process, it helps to ensure that the protective component 3 can protect the cutting component 21 without interfering with it.

[0090] Please see below. Figures 6 to 8 A schematic diagram of the trajectory of the first protective member 31 moving from a first position to a second position in some embodiments. It can be understood that, in Figures 6 to 8 In the middle, the reverse of the trajectory is the trajectory of the first protective component 31 moving from the second position to the first position.

[0091] Please see Figure 6 In some embodiments, the first protective member 31 can also move relative to the device body 10 to a first intermediate position. When the first protective member 31 is in the first intermediate position, the horizontal projection of the second protective member 32 is outside the cutting area of ​​the cutting assembly 21, and the second protective member 32 is located below the cutting assembly 21. When the first protective member 31 moves from the first position to the first intermediate position, the transmission assembly 33 drives the first protective member 31 to translate towards the outside of the device body 10. When the first protective member 31 moves from the first intermediate position to the third position, the transmission assembly 33 drives the first protective member 31 to lift relative to the device body 10. When the first protective member 31 moves from the third position to the second position, the transmission assembly 33 drives the first protective member 31 to move towards the inside of the device body 10 while simultaneously lifting relative to the device body 10.

[0092] Please see further. Figure 7In some embodiments, the first protective member 31 can also move relative to the device body 10 to a second intermediate position. When the first protective member 31 is in the second intermediate position, the horizontal projection of the second protective member 32 is outside the cutting area of ​​the cutting assembly 21, and the second protective member 32 is located above the cutting assembly 21. When the first protective member 31 moves from the first position to the third position, the transmission assembly 33 drives the first protective member 31 to move outward of the device body 10 while simultaneously lifting it relative to the device body 10. When the first protective member 31 moves from the third position to the second intermediate position, the transmission assembly 33 drives the first protective member 31 to lift it relative to the device body 10. When the first protective member 31 moves from the second intermediate position to the second position, the transmission assembly 33 drives the first protective member 31 to translate inward of the device body 10.

[0093] Please see further. Figure 8 In some embodiments, the first protective member 31 can also move relative to the device body 10 to a first intermediate position and a second intermediate position. When the first protective member 31 is in the first intermediate position, the horizontal projection of the second protective member 32 is outside the cutting area of ​​the cutting assembly 21, and the second protective member 32 is located below the cutting assembly 21. When the first protective member 31 is in the second intermediate position, the horizontal projection of the second protective member 32 is outside the cutting area of ​​the cutting assembly 21, and the second protective member 32 is located above the cutting assembly 21. When the first protective member 31 moves from the first position to the first intermediate position, the transmission assembly 33 drives the first protective member 31 to translate towards the outside of the device body 10. When the first protective member 31 moves from the first intermediate position to the third position, the transmission assembly 33 drives the first protective member 31 to lift relative to the device body 10. When the first protective member 31 moves from the third position to the second intermediate position, the transmission assembly 33 drives the first protective member 31 to lift relative to the device body 10. When the first protective member 31 moves from the second intermediate position to the second position, the transmission assembly 33 drives the first protective member 31 to translate towards the inside of the device body 10.

[0094] Please see Figure 9 In some embodiments, the protective mechanism 30 further includes a support 34 and a first drive member 35. The transmission assembly 33 is a linkage assembly. The support 34 is connected to the equipment 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 protective member 31 or the second protective member 32. The linkage assembly is located above the cutting assembly 21. The first drive member 35 is connected to the linkage assembly. The first drive member 35 is used to drive the linkage assembly to swing, thereby causing the first protective member 31 to move relative to the equipment body 10.

[0095] 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.

[0096] 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.

[0097] 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.

[0098] 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.

[0099] Please see Figure 11In some embodiments, the protective mechanism 30 further includes a guide structure 36. The guide structure 36 is disposed on the support 34. One end of the linkage assembly is slidably engaged with the guide structure 36 to drive the first protective member 31 to move relative to the equipment body 10, and the other end of the linkage assembly is fixedly connected to the first protective member 31 or the second protective member 32. The guide trajectory of the guide structure 36 includes a first guide segment 361 and a second guide segment 362 connected in sequence. The first guide segment 361 is configured to guide the first protective member 31 to move from a first position to a third position. The second guide segment 362 is configured to guide the first protective member 31 to move from the third position to a second position. The second guide segment 362 is farther away from the working surface than the first guide segment 361.

[0100] By setting the guide structure 36, the first guide section 361 and the second guide section 362 of the guide structure 36 can guide the first protective member 31 to move between the first position and the second position, and drive the second protective member 32 to avoid the cutting component 21, effectively ensuring the smooth and reliable movement of the first protective member 31 and the second protective member 32.

[0101] In some embodiments, the guide structure 36 may be a guide rail provided on the support 34 or a guide groove provided on the support 34.

[0102] In some embodiments, the guide structure 36 is a guide groove. The guide groove is disposed on the support 34. One end of the connecting rod assembly is slidably connected to the guide groove. The first drive member 35 drives the connecting rod assembly to slide within the guide groove.

[0103] The guide groove can convert the driving force of the first drive member 35 into a preset trajectory of the linkage assembly, so that the protective assembly 3 can move smoothly and reliably between the first position and the second position.

[0104] Please see Figure 11 and Figure 12 In some embodiments, there are two guide slots. The two guide slots are spaced apart. One guide slot is a first guide slot 36a, and the other is a second guide slot 36b. The linkage assembly also includes a trajectory link 333. The trajectory link 333 includes a first mating part 3331, a second mating part 3332, and a third mating part 3333 arranged sequentially at intervals. The first mating part 3331 is fixedly connected to the first protective member 31 or the second protective member 32. The second mating part 3332 is slidably connected to the second guide slot 36b. The third mating part 3333 is slidably connected to the first guide slot 36a. A first driving member 35 is connected to the trajectory link 333. The first driving member 35 drives the trajectory link 333 to slide within the first guide slot 36a and the second guide slot 36b.

[0105] By constraining the movement of the trajectory link 333 together with two guide grooves, it helps to ensure the accuracy and repeatability of the movement trajectory of the first protective component 31. Compared with setting a single guide groove, it effectively eliminates the risk of shaking or jamming that may exist in single-point guidance.

[0106] In some embodiments, the linkage assembly further includes a linkage member 334. The linkage member 334 includes a mounting portion 3341 and a linkage portion 3342. The mounting portion 3341 is rotatably connected to the support 34. The linkage portion 3342 has a linkage groove 3342a along the extending direction of the linkage member 334. A third mating portion 3333 is slidably disposed within the linkage groove 3342a. A first driving member 35 is connected to the mounting portion 3341 to drive the linkage member 334 to rotate.

[0107] By connecting the linkage 334 and the third mating part 3333 of the track link 333, and then driving the linkage 334 to rotate by the first driving member 35, the rotational motion of the linkage 334 is smoothly converted into the sliding motion of the protective component 3 along the guide groove, thereby further improving the stability and reliability of the movement of the protective component 3 relative to the main body 10 of the equipment.

[0108] Please see Figure 13 In some embodiments, the cutting mechanism 20 further includes a second drive member 22. The second drive member 22 is connected to the device body 10. The cutting assembly 21 includes a blade disc body 211 and a cutting element 212. The blade disc body 211 is connected to the second drive member 22. The cutting element 212 is connected to the blade disc body 211. The cutting element 212 is at least partially located outside the blade disc body 211. The second drive member 22 drives the blade disc body 211 to rotate so that the cutting element 212 cuts grass.

[0109] In some embodiments, the number of cutting elements 212 is multiple. The multiple cutting elements 212 are spaced apart around the rotating circumferential direction of the cutter head body 211.

[0110] Multiple cutting pieces 212 can cut grass simultaneously, which helps to improve the grass cutting efficiency of the lawnmower 100.

[0111] Please see Figure 3 In some embodiments, the device body 10 is provided with a sealed cavity 102. The second drive member 22 is located inside the sealed cavity 102.

[0112] The second drive component 22 for driving the cutting assembly 21 to cut grass is set inside the sealed cavity 102 of the main body 10 of the equipment. This can prevent rainwater from entering the second drive component 22 when the lawnmower 100 is working on rainy days, and can also prevent grass clippings produced by cutting grass from entering the second drive component 22, thereby extending the service life of the second drive component 22.

[0113] Please see Figures 13 to 15In some embodiments, the cutting member 212 can move closer to or further away from the cutter head body 211 to change the cutting radius of the cutting assembly 21. When the first protective member 31 is in the first position, the cutting member 212 is close to the cutter head body 211. When the cutting member 212 is away from the cutter head body 211, the first protective member 31 is in the second position.

[0114] When the lawnmower 100 is mowing in an open area, the first protective member 31 is in the first position to form a physical barrier between the cutting component 21 and the outside world. Simultaneously, the cutting component 212 is close to the blade body 211 to reduce the cutting radius of the cutting component 21, thus improving the safety of the lawnmower 100. When the lawnmower 100 is mowing the edge of the lawn or the edge area near obstacles, the cutting component 212 is moved away from the blade body 211 to increase the cutting radius of the cutting component 21. At the same time, the first protective member 31 is in the second position, allowing the cutting component 21 to effectively cut the grass at the edge of the lawn or the edge area near obstacles, reducing blind spots. It should be noted that obstacles are either physical obstacles that the lawnmower 100 cannot cross or virtual obstacles. Specifically, these can be stones, trees, walls, or virtual restricted areas set by the user, etc., without further restrictions.

[0115] Understandably, when the first protective member 31 is in the second position, the lawnmower 100 can be performing edge mowing operations or in a retracted state. Therefore, the cutting member 212 can also be close to the blade body 211 to reduce the cutting radius of the cutting assembly 21, making it easier to retract. When the cutting member 212 is away from the blade body 211, the cutting area of ​​the cutting assembly 21 becomes larger. At this time, the lawnmower 100 must be in a state of waiting to perform or performing edge mowing operations, that is, the first protective member 31 is in the first position.

[0116] In some embodiments, when the cutting element 212 is close to the cutter head body 211, the projection of the device body 10 covers the projection of the cutting element 212 along the rotation axis of the cutter head body 211. When the cutting element 212 is away from the cutter head body 211, the projection boundary of the cutting element 212 is tangent to the projection boundary of the device body 10 along the rotation axis of the cutter head body 211.

[0117] In other embodiments, when the cutting element 212 is close to the cutter head body 211, the projection of the device body 10 covers the projection of the cutting element 212 along the rotation axis of the cutter head body 211. When the cutting element 212 is away from the cutter head body 211, the projection boundary of the cutting element 212 is outside the projection boundary of the device body 10 along the rotation axis of the cutter head body 211.

[0118] 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.

[0119] In this way, users can adjust the cutting radius of the cutting component 21 according to the actual lawn mowing needs.

[0120] 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.

[0121] 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.

[0122] 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.

[0123] In some embodiments, both the cutting member 212 and the telescopic member 213 can be cutting blades. In other embodiments, the reset member 214 can also be a tension spring, and this application does not limit this.

[0124] Please see Figure 14 and Figure 15 In some embodiments, the cutting assembly 21 further includes a locking member 215 and an elastic member 216. The locking member 215 is slidably connected to the cutter head body 211. The elastic member 216 is disposed between the cutter head 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 rotational path of the telescopic member 213. When the cutter head body 211 rotates in a first rotational direction, the telescopic member 213 disengages from the locking member 215 against the elastic force of the elastic member 216 and rotates relative to the cutter head body 211 against the elastic force of the reset member 214. When the cutter head body 211 rotates in a second rotational direction, the telescopic member 213 rotates to abut against the locking member 215 and overcomes the elastic force, and the locking member 215 stops the cutting member 212 away from the cutter head body 211.

[0125] The locking element 215 and the elastic element 216 work together to provide a reliable mechanical stop, ensuring that the cutting element 212 can be reliably locked, preventing the telescopic element 213 from rotating unexpectedly relative to the cutter head body 211, and avoiding accidental injury or damage caused by the cutting element 212 accidentally moving away from the cutter head body 211.

[0126] In some embodiments, the cutter head body 211 is provided with a receiving groove 2110, and when the cutting member 212 approaches the cutter head body 211, the telescopic member 213 is located within the receiving groove 2110. Figure 14 In the illustrated embodiment, the side of the telescopic member 213 facing away from the receiving groove 2110 is an arc-shaped surface 2130. When the telescopic member 213 is located within the receiving groove 2110, the arc-shaped surface 2130 of the telescopic member 213 and the periphery of the cutter head 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 head body 211 can be a circle, and the outer contour is smoother, which helps to reduce the risk of grass clippings getting stuck in the cutting assembly 21.

[0127] Understandably, when there are multiple cutting parts 212, there are also multiple telescopic parts 213, reset parts 214, locking parts 215, elastic parts 216 and receiving slots 2110.

[0128] Furthermore, those skilled in the art should recognize that the above embodiments are merely illustrative of this application and are not intended to limit this application. Any appropriate changes and variations made to the above embodiments within the essential spirit and scope of this application fall within the scope of this application's disclosure.

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; the protection assembly further has a third position; the protection assembly has at least one inflection point in the movement trajectory between the first position and the second position, 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.

2. The lawnmower as claimed in claim 1, characterized in that 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.

3. 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.

4. The lawnmower as claimed in claim 1, characterized in that 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.

5. The lawnmower as claimed in claim 4, 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.

6. The lawnmower as claimed in claim 5, characterized in that The first protection member can also 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.

7. The lawnmower of claim 6, 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.

8. The lawnmower of claim 7, 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.

9. The lawnmower of claim 7 or 8, 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.

10. The lawnmower as claimed in claim 9, 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.

11. The lawnmower as claimed in claim 10, characterized in that 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.

12. The lawn mower of claim 9, 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.

13. The lawn mower of claim 12, 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.

14. The lawnmower of claim 13, 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.

15. The lawn mower of claim 14, 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.

16. 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.

17. The lawn mower of claim 16, wherein, 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.

18. The lawn mower of claim 16, 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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