Lawn edging mechanism and walking device

Abstract

The utility model provides a kind of lawn edge cutting mechanism and walking equipment.Lawn edge cutting mechanism includes edge cutting driving element, edge cutting cutter and bottom guard element.Edge cutting driving element is used to install on the equipment ontology of walking equipment.Edge cutting cutter is transmission connection with edge cutting driving element, and edge cutting cutter is located in the side of equipment ontology towards ground, and it is set in the edge of equipment ontology, and bottom guard element is connected with equipment ontology, and in the height direction of lawn edge cutting mechanism, it is located in the side of edge cutting cutter facing ground.Bottom guard element includes multiple guard poles, and adjacent two guard poles are spaced apart and form grass inlet.Adopting the lawn edge cutting mechanism provided by the utility model, the adaptability of the walking equipment to the boundary of complex terrain is enhanced, the safety of the trimming work is improved, and the cutting efficiency of the lawn edge cutting mechanism is improved.

Description

Technical Field

[0001] This utility model relates to the field of lawn mowing machinery technology, and in particular to a lawn trimming mechanism and a walking device. Background Technology

[0002] Existing lawnmowers consist of a body and a cutting disc mounted on the body, used to cut the lawn. However, because the cutting disc is positioned close to the edge of the body, users can easily touch the blades when they put their hands or feet under the body, increasing the risk of dangerous situations and reducing the safety of using the lawnmower. Utility Model Content

[0003] This utility model provides a lawn trimming mechanism and a walking device to solve the technical problem that the cutting disc of existing lawn mowers is located close to the edge of the machine body, which makes it easy for the user's hand or foot to touch the blade of the cutting disc when they put their hands or feet under the machine body, thereby increasing the risk of dangerous situations and reducing the safety of using the lawn mower.

[0004] In a first aspect, this utility model provides a lawn trimming mechanism, including a trimming drive, a trimming disc, and a bottom protective member. The trimming drive is mounted on the main body of a walking device. The trimming disc is drive-connected to the trimming drive. The trimming disc is located on the side of the main body facing the ground and is disposed at the edge of the main body. The bottom protective member is connected to the main body and is located on the side of the trimming disc facing the ground in the height direction of the lawn trimming mechanism. The bottom protective member includes multiple protective rods, with adjacent protective rods spaced apart to form a grass inlet.

[0005] In conjunction with the first aspect, in one possible implementation, each of the protective rods includes a first protective portion and two second protective portions connected to both ends of the first protective portion. The end of each second protective portion away from the first protective portion is connected to the device body. The extension direction of the first protective portion is parallel to the horizontal plane. The extension directions of both second protective portions intersect with the extension direction of the first protective portion. The extension directions of the multiple first protective portions corresponding to the multiple protective rods are the same. Alternatively, each protective rod may include only a first protective portion, the extension direction of which is parallel to the horizontal plane.

[0006] In conjunction with the first aspect, in one possible implementation, in a projection plane perpendicular to the height direction of the walking device, the lengths of the plurality of guard rods in the length direction of the walking device gradually decrease from the inside to the outside; or, in a projection plane perpendicular to the height direction of the walking device in the length direction of the walking device, the lengths of the plurality of guard rods remain unchanged from the inside to the outside.

[0007] In conjunction with the first aspect, in one possible implementation, at least a portion of the grass inlet and the walking wheels of the walking device are positioned directly opposite each other in the length direction of the walking device, within a projection plane perpendicular to the height direction of the walking device.

[0008] In conjunction with the first aspect, in one possible implementation, the lawn trimming mechanism further includes a mounting bracket, the trimming drive is mounted on the mounting bracket, the mounting bracket is for detachable mounting on the device body, and the trimming disc is rotatably mounted on the mounting bracket.

[0009] In conjunction with the first aspect, in one possible implementation, a plurality of the guard rods are connected to the equipment body via the mounting bracket. In conjunction with the first aspect, in one possible implementation, the mounting bracket includes a mounting base and side guards. The mounting base is detachably fixed to the equipment body and located between the cutting drive and the cutting disc. The side guards are fixed to the outer edge of the mounting base and extend toward the side facing the ground in the height direction of the lawn cutting mechanism.

[0010] In conjunction with the first aspect, in one possible implementation, the side guard is provided with a gripping structure facing away from the cutting disc sidewall, the gripping structure being configured as a gripping groove or gripping protrusion provided on the side guard facing away from the cutting disc sidewall.

[0011] In conjunction with the first aspect, in one possible implementation, the cutting blade is fixedly disposed relative to the device body; or, the cutting blade is movable relative to the device body.

[0012] Secondly, this utility model provides a walking device, including a device body and a lawn trimming mechanism as described above, wherein the lawn trimming mechanism is detachably connected to the device body.

[0013] In conjunction with the second aspect, in one possible implementation, the device body is provided with a main cutting disc, the edge cutting disc is spaced apart from the main cutting disc, and the cutting diameter of the edge cutting disc is smaller than the cutting diameter of the main cutting disc.

[0014] The lawn trimming mechanism and walking device provided by this utility model, on the one hand, are based on a bottom protective component at the bottom of the cutting disc, which forms a protective barrier between the cutting disc and the ground. This prevents injury to humans or organisms from contacting the cutting disc from below, and also blocks obstacles such as stones from the outside environment, thereby improving the safety of the lawn trimming operation. On the other hand, the bottom protective component includes multiple protective rods, with adjacent protective rods spaced apart to form a grass inlet, so that the bottom protective component keeps the lawn clean during the forward or backward movement of the walking device. When grass stalks are flattened, they tend to naturally spring back to their original shape. Therefore, when the grass inlet moves to a flattened grass stalk, the flattened grass stalk can orderly enter the cutting area corresponding to the cutting disc and be smoothly cut. Thus, the bottom protective component can guide the messy grass stalks into the rotation trajectory range of the cutting disc, improving the cutting efficiency of the lawn cutting mechanism. Furthermore, by setting the cutting disc on the side of the equipment body facing the ground and at the edge of the equipment body, the adaptability of the mobile equipment to the boundaries of complex terrains such as walls and fences is enhanced, and the user does not need to manually handle the lawn edges, improving the user experience. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a first-view structural schematic diagram of the walking device provided in this embodiment of the utility model.

[0017] Figure 2 This is a second-view structural schematic diagram of the walking device provided in an embodiment of the present invention.

[0018] Figure 3 yes Figure 1 A first-person view structural diagram of the lawn trimming mechanism of the walking device.

[0019] Figure 4 yes Figure 1 A second-view structural diagram of the lawn trimming mechanism of the walking device.

[0020] Key component symbols: Walking device - 1000; Device body - 100; Walking wheel - 110; Clearance - 1101; First wheel - 111; Second wheel - 112; Main cutting disc - 120; Main disc holder - 121; Main blade - 122; Lawn trimming mechanism - 200; Trimming drive - 10; Trimming disc - 20; Trimming disc holder - 21; Trimming blade - 22; Mounting bracket - 30; Mounting base - 31; Side Partial protective component - 32; Grip structure - 3201; Clearance space - 3202; Protective body - 321; Reinforcing rib - 323; Extension plate - 322; Bottom protective component - 50; Protective space - 501; Grass inlet - 502; Guide section - 503; Protective rod - 51; First rod - 510; Second rod - 520; First protective part - 511; Second protective part - 512; Length direction - X; Width direction - Y; Height direction - Z.

[0021] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0022] The following description of various embodiments of the present invention is based on the accompanying drawings.

[0023] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. "Fixed connection" means that the components are connected to each other and their relative positional relationship remains unchanged after connection. "Rotary connection" means that the components are connected to each other and can rotate relative to each other after connection. The term "integral molding" means that during the formation of one of a plurality of components, that component is connected to the other components without requiring further processing (such as bonding, welding, snap-fit ​​connection, screw connection) to connect the two components together. The directional terms mentioned in the embodiments of this utility model, such as "top," "bottom," "inner," "outer," and "side," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this utility model, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. The term “and / or” as used in this invention refers to any combination of one or more of the associated listed items, as well as all possible combinations, and includes such combinations.

[0024] Please see Figure 1 , Figure 1This is a first-view structural schematic diagram of the walking device 1000 provided in this embodiment of the utility model. The walking device 1000 includes a device body 100 and a lawn trimming mechanism 200. The lawn trimming mechanism 200 is detachably connected to the device body 100. Therefore, on the one hand, the walking device 1000 can care for the lawn through the lawn trimming mechanism 200 without requiring the user to manually handle the lawn edges, improving the user experience and reducing labor intensity; on the other hand, it facilitates the maintenance, replacement, and cleaning of the various parts of the lawn trimming mechanism 200 without disassembling the entire device body 100, and the lawn trimming mechanism 200 and the device body 100 can be transported separately, improving transportation and installation convenience; furthermore, it enriches the usage scenarios of the walking device 1000. For example, the device body 100 can switch between different lawn trimming mechanisms 200 or adjust the cutting angle of the lawn trimming mechanism 200 according to different mowing tasks, improving the flexibility of the walking device 1000's work switching, and the lawn trimming mechanism 200 can be detached in scenarios where there is no trimming or no boundary requirement for mowing.

[0025] The walking device 1000 may include, but is not limited to, hand-held devices, riding devices, and fully automatic intelligent devices, etc., and this utility model does not limit it in this regard. The walking device 1000 can move on the ground. For example, the walking device 1000 can move on the ground by being pushed by a user. Or, for example, the walking device 1000 has its own mobility. Specifically, the walking device 1000 includes drive wheels, and the walking device 1000 can move automatically on the ground through the drive wheels. The walking device 1000 can be configured as, but is not limited to, cleaning equipment, lawn mowing equipment, crop harvesting equipment, etc., and this utility model embodiment does not limit it.

[0026] The walking device 1000 also includes a plurality of walking wheels 110. Exemplarily, in this embodiment, the number of walking wheels 110 is set to four. The four walking wheels 110 include two first wheels 111 and two second wheels 112. The two first wheels 111 are rotatably disposed at the front end of the device body 100, i.e., serving as the front wheels of the walking device 1000. The two second wheels 112 are rotatably disposed at the rear end of the device body 100, i.e., serving as the rear wheels of the walking device 1000. Of course, in some embodiments, the number of walking wheels 110 may also be two, three, or more than four; this embodiment of the present invention does not impose a specific limitation.

[0027] For the sake of accuracy, all references to direction in this article should be expressed in terms of direction. Figure 1For reference, the term "length direction X" can refer to the forward or backward direction of the traveling device 1000; or, the arrangement direction of the first wheel 111 and the second wheel 112 in the traveling device 1000, i.e., the front-back direction (where the positive X-axis is forward). The term "width direction Y" refers to the arrangement direction of the two first wheels 111 or the two second wheels 112 in the traveling device 1000, i.e., the left-right direction (where the positive Y-axis is left). The term "height direction Z" refers to the direction perpendicular to the ground used to support the traveling device 1000, i.e. Figure 1 The vertical direction (where the positive Z-axis is upward) is defined by the vertical direction. The length direction X, width direction Y, and height direction Z together constitute the three orthogonal directions of the walking device 1000. For ease of description, the vertical, left-right, and front-back orientations in this embodiment are relative positions and do not constitute a limitation. The length direction X, width direction Y, and height direction Z of the walking device 1000 can be customized according to the specific structure of the product and the viewing angle presented in the accompanying drawings; this application does not impose specific limitations.

[0028] The lawn trimming mechanism 200 is located between the first wheel 111 and the second wheel 112. Therefore, on the one hand, positioning the lawn trimming mechanism 200 at the center of the side edge of the equipment body 100 reduces the torsional torque generated by the added weight of the lawn trimming mechanism 200, helping to maintain the straightness and stability of the traveling equipment 1000; on the other hand, it avoids the problem of the lawn trimming mechanism 200 being installed at the front or rear, which could lead to the lawn trimming mechanism 200 having already left or not yet reached the effective cutting position when the rear or front of the traveling equipment 1000 passes an obstacle, resulting in some edges not being trimmed or requiring additional adjustments. It also reduces the field of vision obstruction, allowing the operator to simultaneously monitor the forward travel direction and the side trimming work.

[0029] The number of lawn trimming mechanisms 200 can be set to one or more. In this embodiment, the lawn trimming mechanism 200 can be disposed on one side of the device body 100 in the width direction Y of the walking device 1000, so that the lawn trimming mechanism 200 can be closer to the edge of the lawn, improving the trimming effect of the walking device 1000 on the lawn edge, avoiding the problem of missed cutting or collision damage, reducing the weight of the walking device 1000, and saving production costs. Understandably, if the space is large enough, the walking device 1000 can be oriented to make the lawn trimming mechanism 200 closer to the edge of the lawn; or, the user can also manually adjust the installation position of the lawn trimming mechanism 200 to make the lawn trimming mechanism 200 closer to the edge of the lawn. Specifically, the lawn trimming mechanism 200 can be disposed at the middle of the side edge of the device body 100 in the length direction X of the walking device 1000. Of course, in some embodiments, the lawn trimming mechanism 200 can also be disposed at the front or rear end of the side edge of the device body 100 in the length direction X of the walking device 1000. The lawn trimming mechanism 200 can also be disposed on the two sides of the device body 100 in the width direction Y of the walking device 1000, thereby improving the uniformity of force distribution on the walking device 1000 and reducing the risk of the walking device 1000 tipping over. It should be noted that the number and placement of the lawn trimming mechanisms 200 can be set according to actual conditions, and this embodiment of the invention does not impose specific limitations.

[0030] Please refer to the following: Figure 1 and Figure 2 , Figure 2 This is a second-view structural schematic diagram of the walking device 1000 provided in this embodiment of the utility model. The lawn trimming mechanism 200 includes a trimming drive 10, a trimming disc 20, and a bottom protective member 50. The trimming drive 10 is mounted on the device body 100 of the walking device 1000. The trimming disc 20 is connected to the trimming drive 10 in a driving manner, and is located on the side of the device body 100 facing the ground, and is disposed at the edge of the device body 100. The bottom protective member 50 is connected to the device body 100 and is located on the side of the trimming disc 20 facing the ground in the height direction Z of the lawn trimming mechanism 200. The bottom protective member 50 includes a plurality of protective rods 51. Two adjacent protective rods 51 are spaced apart and form a grass inlet 502.

[0031] When a lawnmower is in operation, the trimming rope extends beyond the machine body, increasing the risk of dangerous situations and reducing the safety of the machine. Furthermore, the short and lightweight trimming rope requires high speeds to generate sufficient inertia to cut the lawn boundary. Additionally, the trimming rope needs frequent manual replacement, increasing the maintenance cost of the machine. Therefore, this utility model provides a lawn trimming mechanism 200. On the one hand, based on the bottom protective member 50 provided on the side of the trimming disc 20 facing the ground, the bottom protective member 50 forms a protective barrier between the trimming disc 20 and the ground, thereby preventing human or biological objects from coming into contact with the trimming disc 20 from below and causing injury, and also blocking obstacles such as stones from the outside of the trimming disc 20, thus improving the safety of the lawn trimming mechanism 200. On the other hand, based on the bottom protective member 50 including multiple protective rods 51, and two adjacent protective rods 51 being spaced apart to form a grass inlet 502, the bottom protective member 50 keeps the grass plants on the lawn from being moved forward or backward by the walking device 1000. When grass is flattened, the flattened grass tends to naturally recover its original shape. Therefore, when the grass inlet 502 moves to the flattened grass, the flattened grass can orderly enter the cutting area corresponding to the cutting disc 20 and be cut smoothly. Thus, the bottom protective component 50 can concentrate and guide the messy grass into the rotation trajectory range of the cutting disc 20, improving the cutting efficiency of the lawn cutting mechanism 200. On the other hand, by setting the cutting disc 20 on the side of the equipment body 100 facing the ground and on the edge of the equipment body 100, the adaptability of the walking equipment 1000 to the boundaries of complex terrains such as walls and fences is enhanced. At the same time, the accuracy and safety of the trimming work are improved, and the user does not need to manually handle the lawn edge, thus improving the user experience.

[0032] In some embodiments, the edge-cutting disc 20 is spaced apart from the main cutting disc 120 provided on the device body 100, and the cutting diameter of the edge-cutting disc 20 is smaller than that of the main cutting disc 120. Therefore, by setting the cutting diameter of the edge-cutting disc 20 to be smaller than that of the main cutting disc 120, the smaller size of the edge-cutting disc 20 allows the operator to more precisely control the movement of the blade along complex boundaries, achieving cleaner and neater edge lines. It also provides greater flexibility and precision in confined edge spaces. Furthermore, the smaller diameter disc's mass is closer to the center of rotation, reducing rotational inertia, increasing the rotational speed of the edge-cutting disc 20, and improving the cutting effect. Of course, in some embodiments, the walking device 1000 may omit the main cutting disc 120, meaning the walking device 1000 only includes one or more lawn edge-cutting mechanisms 200.

[0033] It should be noted that the cutting area covered by the edge-cutting disc 20 when the traveling device 1000 is in a preset position is a circular area, and the cutting area covered by the main cutting disc 120 when the traveling device 1000 is in a preset position is also a circular area. The cutting diameter of the edge-cutting disc 20 refers to the diameter of the maximum cutting area covered by the edge-cutting disc 20 when the traveling device 1000 is in a preset position, projected onto a plane perpendicular to the height direction Z of the traveling device 1000. The cutting diameter of the main cutting disc 120 refers to the diameter of the maximum cutting area covered by the main cutting disc 120 when the traveling device 1000 is in a preset position, projected onto a plane perpendicular to the height direction Z of the traveling device 1000. The preset position can be any position in the lawn, and the cutting area refers to the cutting area corresponding to the edge-cutting disc 20 or the main cutting disc 120 when the traveling device 1000 passes through the same position in the lawn.

[0034] It should be noted that, Figure 2 The purpose is only to schematically describe the arrangement between the edge-cutting drive 10 and the edge-cutting cutter head 20, and is not to make specific limitations on the connection position, connection relationship and specific structure of each component. Figure 2 The lawn trimming mechanism 200 illustrated in this embodiment is not intended to limit the specific features of the lawn trimming mechanism 200. In other embodiments of this application, the lawn trimming mechanism 200 may include components that are more advanced than those described above. Figure 2 The lawn trimming mechanism 200 may include more or fewer components, combinations of certain components, or different components. For example, it may also include, but is not limited to, a communication module and a warning module. The communication module of the lawn trimming mechanism 200 can establish a communication connection with external devices to receive cutting operation commands and stop cutting operation commands sent by the external devices. External devices can be, but are not limited to, smart devices such as mobile phones, tablets, computers, remote controls, and wearable devices. The warning module can be configured as at least one of a speaker, warning light, vibrator, or display. The warning mechanism is used to issue warning information. The warning information can be at least one of sound, text, light, vibration, or graphic content. The warning information can be used to characterize the working status of the lawn trimming mechanism 200, reminding the user to intervene promptly when the lawn trimming mechanism 200 malfunctions, thereby improving the safety and reliability of the lawn trimming mechanism 200. The warning module can be installed on the lawn trimming mechanism 200; alternatively, it can also be installed on the device body 100.

[0035] For example, in this embodiment, the lawn trimming mechanism 200 further includes a mounting bracket 30. The trimming drive 10 is mounted on the mounting bracket 30. The mounting bracket 30 is detachably mounted on the equipment body 100, and the trimming disc 20 is rotatably mounted on the mounting bracket 30. Thus, the trimming drive 10, the trimming disc 20, and the mounting bracket 30 are connected to form an integral structure, thereby enabling the modular design of the mobile equipment 1000. This facilitates the removal of the lawn trimming mechanism 200 from the equipment body 100 and the maintenance, replacement, and cleaning of the various parts of the lawn trimming mechanism 200. On the other hand, it enriches the usage scenarios of the mobile equipment 1000. For example, the equipment body 100 can switch between different lawn trimming mechanisms 200 or adjust the cutting angle of the lawn trimming mechanism 200 according to different mowing tasks, improving the flexibility of the mobile equipment 1000 in switching between tasks. Furthermore, the lawn trimming mechanism 200 can be removed in scenarios where there is no trimming operation or no boundary requirement for mowing. Of course, in some embodiments, the lawn trimming mechanism 200 may omit the mounting bracket 30, and the trimming drive 10 may be directly mounted on the device body 100.

[0036] For example, in this embodiment, the mounting bracket 30 and the device body 100 can be detachably connected together by screws. Of course, in some embodiments, the mounting bracket 30 and the device body 100 can also be detachably connected together by a snap-fit ​​structure, a hook structure or other mounting structure, and this embodiment of the present invention does not make specific limitations.

[0037] In some embodiments, the mounting bracket 30 is further provided with an unlocking element. The unlocking element is movably mounted on the mounting bracket 30. The unlocking element has an unlocked state and a locked state. When the unlocking element is in the unlocked state, the mounting bracket 30 is disconnected from the device body 100. When the unlocking element is in the locked state, the mounting bracket 30 is connected to the device body 100.

[0038] Of course, in some embodiments, the lawn trimming mechanism 200 may also be non-detachably connected to the device body 100, and this utility model embodiment does not make specific limitations.

[0039] Please refer to the following: Figure 1 , Figure 3 and Figure 4 , Figure 3 yes Figure 1 A first-view structural diagram of the lawn trimming mechanism 200 of the walking device 1000; Figure 4 yes Figure 1The diagram shows a second-view structural diagram of the lawn trimming mechanism 200 of the walking device 1000. In some embodiments, the bottom protective member 50 is connected to the device body 100 via a mounting bracket 30. Thus, by connecting the bottom protective member 50 to the mounting bracket 30, the bottom protective member 50, the trimming drive member 10, the trimming disc 20, and the mounting bracket 30 are connected to form an integral structure. This modular design of the walking device 1000 facilitates the removal of the lawn trimming mechanism 200 from the device body 100 and facilitates the maintenance, replacement, and cleaning of the various parts of the lawn trimming mechanism 200. Of course, in some embodiments, the bottom protective member 50 can also be independently configured with respect to the mounting bracket 30 and directly connected to the device body 100.

[0040] For example, in this embodiment, multiple guard bars 51 are spaced apart in a preset direction, wherein the preset direction is parallel to the width direction Y of the traveling device 1000; or, the preset direction is set at an acute angle to the width direction Y of the traveling device 1000. A grass inlet 502 is formed between two adjacent guard bars 51. For example, in this embodiment, multiple guard bars 51 are spaced apart in the width direction Y of the traveling device 1000. Thus, on the one hand, the spaced guard bars 51 allow grass clippings, stones, and other materials to pass smoothly through the grass inlet 502, thereby preventing material from accumulating in the cutting area where the cutting disc 20 is located, improving the cutting effect of the cutting disc and reducing the load, and realizing airflow; on the other hand, the arrangement direction of the multiple guard bars 51 is perpendicular to the forward direction of the traveling device 1000, thereby forming a continuous fence-like barrier, improving the blocking efficiency of lateral splashes of the cutting disc 20, and ensuring that the amount of grass sucked into the grass inlet 502 between two adjacent guard bars 51 is evenly distributed, avoiding local overload of the cutting disc 20. Of course, in some embodiments, the multiple guard bars 51 are spaced apart in a direction that forms an acute angle with the width direction Y of the walking device 1000. It should be noted that the preset direction refers to the arrangement direction of the multiple guard bars 51, that is, the direction parallel to the line connecting the center points of the multiple guard bars 51.

[0041] It should be noted that the term "parallel" refers to two straight lines on a plane, two planes in space, and a straight line in space and a plane having no common points. The term "perpendicular" refers to two lines on a plane intersecting at a right angle, meaning the two lines are perpendicular to each other. In the embodiments of this utility model, descriptions such as parallel and perpendicular can include cases where they are approximately parallel or approximately perpendicular due to processing errors, measurement errors, etc. For example, the parallelism of two lines described herein can include the case where the two lines are completely parallel, or the case where the two lines are approximately parallel. The perpendicularity of two lines described herein can include the case where the two lines are completely perpendicular, or the case where the two lines are approximately perpendicular.

[0042] In this example, within the projection plane perpendicular to the height direction Z of the walking device 1000, the extension direction of the grass inlet 502 is perpendicular to the width direction Y of the walking device 1000; that is, the angle formed between the extension direction of the grass inlet 502 and the width direction Y of the walking device 1000 is a right angle. Therefore, when the mobile device performs slope trimming, multiple guardrails 51 are arranged sequentially to form a gradient grass inlet 502, thereby enhancing the slope adaptability of the lawn trimming mechanism 200.

[0043] Of course, in some embodiments, in the projection plane perpendicular to the height direction Z of the walking device 1000, the extending direction of the grass inlet 502 forms an angle with the width direction Y of the walking device 1000. The angle is acute and is defined as α. Wherein, 45° < α < 90°. Thus, based on the deflection of the guard rod 51 relative to the width direction Y of the walking device 1000, the inclined guard rod 51 can also decompose the radial impact force of the cutting disc 20 into an axial component force, which is transmitted to the device body 100 through the guard rod 51 and the mounting bracket 30, extending the service life of the bottom protective frame. The acute angle can be, but is not limited to, 45°, 50°, 55°, 60°, 65°, 70°, 75°, 80°, 85°, or 90°, etc.

[0044] For example, in this embodiment, the grass inlet 502 is generally elongated, that is, the grass inlet 502 is an elongated slit. Of course, in some embodiments, the shape of the grass inlet 502 can also be, but is not limited to, a mesh structure or an irregular structure. For example, the bottom protection can also be configured as a fence structure. Specifically, the bottom protection member 50 also includes a connecting rod. The connecting rod connects to two adjacent protection rods 51, thereby improving the overall structural strength of the bottom protection member 50 and avoiding the problem of interference between the protection rods 51 and the cutting disc 20 after deformation.

[0045] For example, in this embodiment, within the projection plane perpendicular to the height direction Z of the walking device 1000, the lengths of the multiple protective rods 51 gradually decrease from the inside to the outside. Understandably, during cutting operations, the centrifugal force on the outer side of the cutting disc 20 is greater than the centrifugal force on the inner side of the cutting disc 20, resulting in a larger force exerted by the cutting disc 20 on the outer protective rods 51 through the grass. Therefore, this application sets the length of the protective rods 51 located at the outer edge of the cutting disc 20 to be shorter, and the length of the protective rods 51 located at the center of the cutting disc 20 to be longer. On the one hand, given the same material and size specifications, the structural strength of the shorter protective rods 51 is greater than that of the longer protective rods 51, thereby improving the bending resistance of the outer protective rods 51; on the other hand, the shorter length of the outer protective rods 51 also reduces the risk of deformation due to collision with obstacles, and the gradually changing lengths of the multiple protective rods 51 can disrupt resonant harmonics. Of course, in some other embodiments, the length of the plurality of guard rods 51 remains constant from the inside out in the projection plane of the height direction Z perpendicular to the walking device 1000.

[0046] In this embodiment, in the projection plane perpendicular to the height direction Z of the walking device 1000, at least a portion of the grass inlet 502 and the walking wheels 110 of the walking device 1000 are directly opposite each other in the length direction X of the walking device 1000. Therefore, during the movement of the walking device 1000, the walking wheels 110 can compact the grass. Since the compacted grass tends to naturally recover its original shape, when the grass inlet 502 moves to the compacted grass, the compacted grass can orderly enter the cutting area corresponding to the cutting disc 20 and be smoothly cut. Thus, the bottom protective member 50 can concentrate and guide the messy grass into the rotation trajectory range of the cutting disc 20, preventing the grass from accumulating and tangling around the cutting disc 20, reducing the risk of grass blockage, and ensuring that the grass contacts the cutting disc 20 at an approximately perpendicular angle, thereby improving the cutting efficiency of the lawn cutting mechanism 200. Of course, in some embodiments, at least part of the grass inlet 502 and the walking wheels 110 of the walking device 1000 can be offset in the length direction X of the walking device 1000 within the projection plane perpendicular to the height direction Z of the walking device 1000. In this embodiment, the user can control the walking path of the walking device 1000 to achieve pre-compacting of the lawn by the walking wheels 110. When the grass is short, the grass can pass directly into the grass inlet 502 without being compacted by the walking wheels 110.

[0047] A guide section 503 is provided on the front side of the bottom protective member 50 in the longitudinal direction X of the walking device 1000. The guide section 503 is inclined towards the rear side of the walking device 1000 relative to the cutting disc 20. In other words, two adjacent protective bars 51 are defined as the first bar 510 and the second bar 520, with the second bar located outside the first bar 510. In the longitudinal direction X of the walking device 1000, the front end of the first bar 510 is higher than the front end of the second bar 520. Multiple protective bars 51 are arranged obliquely on the front side of the walking device 1000 in the longitudinal direction X to form the guide section 503. As a result, during the movement of the walking device 1000, some grass stalks outside the walking wheel 110 are not crushed. The crushed grass stalks are first guided to be cut through the grass inlet 502 located on the inner side, thereby reducing the resistance of the uncrushed grass stalks entering the grass inlet 502 on the outer side and improving the cutting efficiency of the lawn cutting mechanism 200.

[0048] In some embodiments, the bottom protective member 50 may also be provided with a guide portion 503 on the rear side of the walking device 1000 in the longitudinal direction X, and the guide portion 503 is inclined towards the front side of the walking device 1000 relative to the cutting disc 20. In other words, in the longitudinal direction X of the walking device 1000, the rear end of the first rod 510 is higher than the rear end of the second rod 520. The bottom protective member 50 is provided with guide portions 503 on both the front and rear sides of the walking device 1000 in the longitudinal direction X.

[0049] In this embodiment, the protective rod 51 is configured with a U-shaped structure. The bottom protective member 50 is connected to the mounting bracket 30 to form a protective space 501 communicating with the grass inlet 502. The side of the cutting disc 20 near the edge of the equipment body 100 extends into the protective space 501. Specifically, the protective rod 51 includes a first protective part 511 and two second protective parts 512 connected to both ends of the first protective part 511. The end of each second protective part 512 away from the first protective part 511 is connected to the equipment body 100. The extension direction of the first protective part 511 is parallel to the horizontal plane. The extension directions of the two second protective parts 512 intersect the extension direction of the first protective part 511, and the extension directions of the multiple first protective parts 511 corresponding to the multiple protective rods 51 are the same. Thus, the U-shaped structure enhances the structural strength of the protective rod 51, absorbs collision energy, and extends the service life of the protective rod 51. The multiple first protective parts 511 of the multiple protective rods 51 are arranged coplanarly. In other words, the distance between the multiple first protective parts 511 of the multiple protective bars 51 and the horizontal plane is equal. Therefore, based on the equal distance between the multiple first protective parts 511 and the horizontal plane, on the one hand, the accuracy of the cutting height control of the lawn trimming mechanism 200 is improved, and the neatness of the lawn edge trimming is enhanced; on the other hand, the multiple first protective parts 511 can evenly bear pressure, avoiding the problem of easily damaged protruding first protective parts 511. For example, the extension directions of the two second protective parts 512 are both perpendicular to the extension direction of the first protective part 511. Of course, in some embodiments, at least some of the multiple first protective parts 511 of the multiple protective bars 51 may not be coplanar; this application embodiment does not specifically limit this. The extension directions of the two second protective parts 512 are both acute or obtuse angles to the extension direction of the first protective part 511; this application embodiment does not specifically limit this. In some other embodiments, the second protective part 512 may be omitted from the protective rod 51, that is, the protective rod 51 may only include the first protective part 511, and the extension direction of the first protective part 511 is parallel to the horizontal plane. It should be noted that the horizontal plane refers to the plane perpendicular to the height direction Z of the lawn trimming mechanism 200.

[0050] In this embodiment, the protective rod 51 can be configured as a cylindrical structure, thereby allowing the grass stalks to smoothly enter the cutting area of ​​the cutting disc 20 from the grass inlet 502. Of course, in some embodiments, the protective rod 51 may be configured as, but is not limited to, a prismatic structure, a hemispherical structure, or a semi-prismatic structure. The protective rod 51 is configured as a metal structure. The material of the metal structure includes, but is not limited to, at least one of stainless steel, iron, and metal alloys.

[0051] In this embodiment, for example, the mounting bracket 30 includes a mounting base 31 and a side guard 32. The mounting base 31 is detachably fixed to the device body 100 and is located between the cutting drive 10 and the cutting disc 20. The side guard 32 is fixedly connected to the outer edge of the mounting base 31 and extends toward the ground in the height direction Z of the lawn cutting mechanism 200. Therefore, on the one hand, by placing the mounting base 31 between the cutting drive 10 and the cutting disc 20, the mounting base 31 can prevent grass clippings cut by the cutting disc 20 from entering the cutting drive 10, thus extending the service life of the cutting drive 10; on the other hand, the side guard 32 is fixedly connected to the side of the mounting base 31 near the edge of the equipment body 100 and extends towards the side away from the equipment body 100, so that the side guard 32 forms a protective barrier on the side of the cutting disc 20 near the lateral edge of the equipment body 100, thereby preventing human or biological objects from coming into contact with the cutting disc 20 from the side of the walking equipment 1000 and causing injury, and blocking obstacles such as stones in the external environment, thereby improving the safety of the lawn cutting mechanism 200.

[0052] In some embodiments, the side guard 32 is provided with a grip structure 3201 facing away from the side wall of the cutting disc 20. The grip structure 3201 is configured as a grip groove or grip protrusion on the side wall of the side guard 32 facing away from the cutting disc 20. Thus, based on the grip structure 3201 on the outer side wall of the side guard 32, the user can easily lift the walking device 1000 by operating the grip structure 3201, improving operational convenience. Exemplarily, in this embodiment, the grip structure 3201 is configured as a grip groove on the side wall of the side guard 32 facing away from the cutting disc 20, thereby avoiding the risk of collision between the grip protrusion on the opposite side guard and a person or obstacle, and reducing the weight of the lawn protection mechanism. In some embodiments, the grip protrusion may be integrally formed with the side guard 32; or, the grip protrusion may be independently provided with the side guard 32 and detachably connected together.

[0053] Please refer to it again. Figure 2 and Figure 4A gap 1101 is formed between the first wheel 111 and the second wheel 112. A side guard 32 is used to cover the gap 1101, thereby preventing obstacles from getting stuck between the walking wheel 110 and the lawn trimming mechanism 200 and affecting the steering and straight-line movement of the walking wheel 110. In some embodiments, the side guard 32 includes a protective body 321 and two extension plates 322 disposed on both sides of the protective body 321 in the longitudinal direction X of the walking device 1000. The two extension plates 322 and the protective body 321 enclose a clearance space 3202, thereby providing room for the rotation of the walking wheel 110. In some embodiments, the two extension plates 322 are inclined relative to the protective body 321 towards the device body 100, thereby improving the structural strength of the side guard 32 and the aesthetics of the walking device 1000.

[0054] In some embodiments, the side guard 32 is provided with a reinforcing rib 323 on the end face facing the ground. Specifically, the protective body 321 is provided with a reinforcing rib 323 on the end face facing the ground. Thus, on the one hand, the reinforcing rib 323 reduces the friction area between the side guard 32 and obstacles or grass, thereby improving the obstacle-crossing performance of the side guard 32.

[0055] Exemplarily, in this embodiment, the cutting disc 20 includes a cutting disc base 21 and a plurality of cutting blades 22. The plurality of cutting blades 22 are spaced apart on the periphery of the cutting disc base 21. Each cutting blade 22 has a cutting edge on at least one side in the rotation direction of the cutting disc 20. Thus, the cutting drive 10 is fixedly connected to the cutting disc base 21 and drives the cutting disc base 21 to rotate the plurality of cutting blades 22 mounted on it, thereby achieving the cutting of grass stalks. The cutting blades 22 are detachably mounted on the cutting disc base 21, facilitating maintenance, replacement, and other operations of the cutting blades 22. Of course, in some embodiments, the number of cutting blades 22 can be set to one. The cutting blades 22 can be configured as elongated blades; or, they can be configured as a disc-shaped disc or an arc-shaped blade, etc. The cutting blades 22 can also be non-detachably mounted on the cutting disc base 21.

[0056] The main cutting disc 120 includes a main disc holder 121 and a plurality of main blades 122. The plurality of main blades 122 are spaced apart around the periphery of the main disc holder 121. The structure of the main cutting disc 120 is similar to that of the edge-cutting disc 20. The structure of the main cutting disc 120 can be found in the description of the edge-cutting disc 20, and will not be repeated here. Of course, in some embodiments, the structure of the edge-cutting disc 20 may be dissimilar to that of the edge-cutting disc 20.

[0057] In this embodiment, the cutting disc 20 is fixedly set relative to the equipment body 100, thereby reducing the structural complexity of the lawn cutting mechanism 200 and saving the space occupied by the lawn cutting mechanism 200 on the bottom of the equipment body 100, thus realizing the miniaturization of the walking device 1000.

[0058] Of course, in some embodiments, the cutting disc 20 is height-adjustable relative to the device body 100. Therefore, based on the height-adjustable cutting disc 20 relative to the device body 100, on the one hand, the precision of the lawn cutting mechanism 200 in adjusting the cutting height of the lawn boundary is improved; on the other hand, the adaptability to complex terrain is improved, for example, when the lawn cutting mechanism 200 encounters an obstacle, it can be automatically or manually raised, improving safety; furthermore, the height can be automatically adjusted according to the density of the grass, reducing ineffective cutting. For example, in one possible implementation, the lawn cutting mechanism 200 also includes a manual cam mechanism, which is connected to the cutting disc 20 and used to manually control the height of the cutting disc 20 relative to the device body 100 to adjust the distance between the cutting disc 20 and the ground. In another possible implementation, where space permits, the lawn cutting mechanism 200 may also include an automatic lifting mechanism, which is connected to the cutting disc 20 and used to automatically control the height of the cutting disc 20 relative to the device body 100 to adjust the distance between the cutting disc 20 and the ground.

[0059] It should be noted that the manual cam mechanism or automatic lifting structure can only drive the cutting blade 20 to rise and fall relative to the equipment body 100 to adjust the distance between the cutting blade 20 and the ground; or, the manual cam mechanism or automatic lifting structure can drive the entire lawn cutting mechanism 200 to rise and fall relative to the equipment body 100 to adjust the distance between the cutting blade 20 and the ground. It should also be noted that the lifting and lowering configuration and connection method of the cutting blade 20 can be set according to actual conditions, and this application embodiment does not impose specific limitations.

[0060] The above are merely specific implementations of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. A lawn trimming mechanism, characterized in that, include: A cutting edge drive component, which is used to be installed on the device body of the walking device; A cutting disc is connected to the cutting drive unit. The cutting disc is located on the side of the equipment body facing the ground and is disposed on the edge of the equipment body. The bottom protective component is connected to the equipment body and is located on the side of the cutting disc facing the ground in the height direction of the lawn cutting mechanism. The bottom protective component includes multiple protective rods, with two adjacent protective rods spaced apart to form a grass inlet.

2. The lawn trimming mechanism according to claim 1, characterized in that, Each of the protective rods includes a first protective part and two second protective parts connected to both ends of the first protective part. The end of each second protective part away from the first protective part is connected to the device body. The extension direction of the first protective part is parallel to the horizontal plane. The extension directions of the two second protective parts intersect with the extension direction of the first protective part. The extension directions of the multiple first protective parts corresponding to the multiple protective rods are the same; or, each protective rod includes only a first protective part, and the extension direction of the first protective part is parallel to the horizontal plane.

3. The lawn trimming mechanism according to claim 1, characterized in that, In a projection plane perpendicular to the height direction of the walking device, the lengths of the multiple protective bars in the length direction of the walking device gradually decrease from the inside to the outside; or, in a projection plane perpendicular to the height direction of the walking device in the length direction of the walking device, the lengths of the multiple protective bars remain unchanged from the inside to the outside.

4. The lawn trimming mechanism according to claim 1, characterized in that, In a projection plane perpendicular to the height direction of the walking device, at least a portion of the grass inlet and the walking wheels of the walking device are positioned directly opposite each other in the length direction of the walking device.

5. The lawn trimming mechanism according to claim 2, characterized in that, The lawn trimming mechanism also includes a mounting bracket, on which the trimming drive is mounted. The mounting bracket is detachably mounted on the device body, and the trimming disc is rotatably mounted on the mounting bracket.

6. The lawn trimming mechanism according to claim 5, characterized in that, Multiple protective rods are connected to the device body via the mounting bracket.

7. The lawn trimming mechanism according to claim 5, characterized in that, The mounting bracket includes a mounting base and a side guard. The mounting base is detachably fixed to the device body and is located between the cutting drive and the cutting disc. The side guard is fixed to the outer edge of the mounting base and extends towards the ground in the height direction of the lawn cutting mechanism.

8. The lawn trimming mechanism according to claim 7, characterized in that, The side guard is provided with a gripping structure on the side wall opposite to the cutting disc, and the gripping structure is configured as a gripping groove or gripping protrusion on the side wall opposite to the cutting disc of the side guard.

9. The lawn trimming mechanism according to any one of claims 1-5, characterized in that, The cutting blade is fixedly disposed relative to the device body; or, the cutting blade is movable relative to the device body.

10. A walking device, characterized in that, It includes a device body and a lawn trimming mechanism as described in any one of claims 1-9, wherein the lawn trimming mechanism is detachably connected to the device body.

11. The walking device according to claim 10, characterized in that, The device body is provided with a main cutting blade, and the edge cutting blade is arranged at a distance from the main cutting blade. The cutting diameter of the edge cutting blade is smaller than that of the main cutting blade.

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