Grass striking mechanism and mowing robot

Abstract

The application provides a grass beating mechanism and a mowing robot, and relates to the technical field of mowing robots. The grass beating mechanism comprises a grass beating module and a sliding block support. The grass beating module is used for performing a grass beating operation. The sliding block support is connected with the grass beating module. The bottom end of the sliding block support is provided with a guide surface. The distance between the lowest point of the guide surface and the ground is less than the distance between the lowest point of the grass beating module and the ground. The application can effectively suppress the swinging of the grass beating module caused by the change of the posture of the vehicle body during the operation, improve the obstacle passing performance and the working stability, and avoid excessive damage to the lawn.

Description

Technical Field

[0001] This application relates to the field of lawn mowing robot technology, and more particularly to a lawn mowing mechanism and a lawn mowing robot. Background Technology

[0002] Lawn mowing robots are often equipped with a trimming module at the rear to improve the trimming effect in corner areas. However, lawn mowing robots equipped with such trimming modules face certain challenges in actual operation: when the lawn mowing robot travels over uneven ground, slopes, or obstacles, changes in the robot's posture can cause the trimming module to swing significantly. Especially when working uphill, the trimming module is prone to getting too close to the ground, causing the trimming ropes in the module to over-cut the lawn, or even leaving bare patches of turf, affecting the appearance and health of the lawn.

[0003] In addition, due to the structural layout of the mowing module, the ability of the mowing robot to move forward, backward, or turn to overcome obstacles is limited, which not only reduces its terrain adaptability but also restricts the overall working efficiency and operational stability of the machine to a certain extent. Utility Model Content

[0004] In view of this, the purpose of this application is to overcome the shortcomings of the prior art and provide a mowing mechanism and a mowing robot that can effectively suppress the swaying of the mowing module caused by changes in the vehicle's posture during operation, improve obstacle crossing ability and working stability, and avoid excessive damage to the lawn.

[0005] This application provides the following technical solution: In a first aspect, embodiments of this application provide a mowing mechanism, the mowing mechanism comprising: The mowing module is used to perform mowing operations; A sliding support is provided, which is connected to the mowing module. The bottom end of the sliding support has a guide surface, and the distance between the lowest point of the guide surface and the ground is less than the distance between the lowest point of the mowing module and the ground.

[0006] In some embodiments of the first aspect, the mowing mechanism further includes a swing member having a first connecting end and a second connecting end, the swing member being an elastic member to allow the second connecting end to elastically displace relative to the first connecting end and to reset upon pressure release.

[0007] In some embodiments of the first aspect, the guide surface is an arc surface.

[0008] In some embodiments of the first aspect, the mowing mechanism further includes a cutting member disposed on the sliding support member, and the cutting member has a blade portion. The blade portion is spaced apart from the outer periphery of the mowing module, and the cutting edge of the blade portion faces away from the rotation direction of the mowing rope released by the mowing module. When the mowing rope is in operation, the blade portion can contact and cut the mowing rope.

[0009] In some embodiments of the first aspect, the sliding support includes a ball head connected to the mowing module, and the bottom of the ball head is provided with the guide surface.

[0010] In some embodiments of the first aspect, the mowing module includes a frame, and the frame and the sliding support are detachably connected.

[0011] In some embodiments of the first aspect, the portion of the sliding support located below the mowing module has a first guide surface, the height of which gradually increases in the rotational direction of the mowing rope, and the blade is located in the extension direction of the first guide surface to guide and lift the mowing rope to the blade.

[0012] In some embodiments of the first aspect, the sliding support has a second guide surface disposed relative to the outer periphery of the mowing module; wherein, in a direction away from the rotation axis of the mowing rope, the blade and the second guide surface are disposed sequentially, and the blade protrudes from the second guide surface; in the rotation direction of the mowing rope, the second guide surface gradually approaches the rotation axis.

[0013] In some embodiments of the first aspect, the sliding support has a third guide surface disposed relative to the outer periphery of the mowing module, the third guide surface being located downstream of the blade in the rotation direction of the mowing rope, and the third guide surface being outside the rotation range of the mowing rope.

[0014] Secondly, this application also provides a lawn mowing robot, which includes a mobile vehicle body and a mowing mechanism as described in any of the above embodiments, wherein the mobile vehicle body and the mowing mechanism are connected.

[0015] The embodiments of this application have the following advantages: This application provides a mowing mechanism that, by adding a sliding support, constrains the posture and guides the motion of the mowing module to address the challenges posed by changes in the mowing robot's body posture. The sliding support is rigidly or movably connected to the mowing module, and its bottom guide surface forms a physical reference. The lowest point of this guide surface is set below the lowest working position of the mowing module. This design ensures that regardless of the robot's tilt (e.g., the front of the robot lifting uphill), the guide surface of the sliding support will contact the ground or obstacle before the mowing module. When the mowing robot traverses undulating terrain, slopes, or crosses obstacles, the robot pitches, and the mowing module tends to swing downwards under gravity or inertia. At this time, the guide surface of the sliding support contacts the ground and generates a supporting force, effectively limiting the further downward (i.e., towards the ground) swing of the mowing module, thus acting as a mechanical limiter. The guide surface not only serves as a limiter but also a guide. When the mowing robot crosses an obstacle (e.g., driving up a slope from flat ground), the guide surface of the sliding support will contact the edge of the slope first. Because the guide surfaces are typically designed to be smooth or curved, they guide the entire mowing mechanism to glide smoothly over obstacles, rather than impacting them hard or getting stuck. This reduces the risk of the mowing module getting caught on obstacles or experiencing violent collisions when traversing them, transforming the passive swaying of the mowing module into controlled sliding or slight lifting. By limiting the downward swaying range of the mowing module, the mechanism can maintain a relatively stable working gap between the mowing module (especially the mowing rope) and the ground, which is not less than a preset value. Even in uphill conditions, it prevents the mowing module from pressing excessively against the ground.

[0016] Therefore, this application effectively avoids over-cutting, protects the lawn, and fundamentally suppresses the phenomenon of the mowing module getting too close to the ground due to the vehicle's backward tilting posture during uphill operations by mechanically limiting the sliding support. This ensures that the mowing rope maintains a suitable distance from the grass, effectively preventing problems such as bald patches, damage to the lawn's aesthetics, and negative impacts on grass health caused by excessive cutting, thus improving mowing quality.

[0017] Furthermore, it significantly improves obstacle-crossing capability and terrain adaptability. The guide surface of the sliding support optimizes the obstacle-crossing process, allowing the mowing mechanism to smoothly traverse obstacles such as ground undulations and ridges. It reduces the risk of interference and jamming of the mowing module during obstacle crossing, enhancing the tail mechanism's ability to move forward, backward, or turn, thus adapting to more complex terrains. It also enhances the overall machine's operational stability and reliability, suppressing ineffective large-scale swaying of the mowing module and reducing the risk of vibration and potential damage caused by impacts and collisions.

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This invention provides a schematic structural diagram of a mowing mechanism from one perspective, according to an embodiment of the present application. Figure 2 This invention provides a schematic diagram of the structure of a mowing mechanism from another perspective, according to an embodiment of the present application. Figure 3 A schematic diagram of the structure of a mowing mechanism provided in one embodiment of this application is shown from another perspective; Figure 4 This illustration shows a structural schematic diagram from another perspective of a grass-cutting mechanism provided in one embodiment of this application; Figure 5 This illustration shows a schematic structural diagram of a sliding support member according to an embodiment of the present application from one perspective; Figure 6 The diagram shows a structural schematic of a cut-out piece according to an embodiment of this application from one perspective.

[0021] Explanation of key component symbols: 100-Swing component; 200 - Hay trimming module; 210 - Hay trimming head; 211 - Hay trimming rope; 220 - Frame; 300 - Sliding support; 310 - Guide surface; 320 - First guide surface; 330 - Second guide surface; 340 - Third guide surface; 350 - Ball head; 400 - Cutting part; 410 - Blade. Detailed Implementation

[0022] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0023] It should be noted that when an element is said to be "fixed" to another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "connected" to another element, it can be directly connected to the other element or there may be an intervening element. Conversely, when an element is said to be "directly" on another element, there is no intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0024] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the template description is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] In related technologies, lawnmower robots are often equipped with a trimming module at the rear to improve the trimming effect in corner areas. However, lawnmower robots equipped with such trimming modules face certain challenges in actual operation: when the lawnmower robot traverses uneven terrain, slopes, or obstacles, changes in the robot's posture can cause significant swaying of the trimming module. Especially on uphill slopes, the trimming module tends to get too close to the ground, causing the trimming ropes to over-cut the lawn, even bald patches, affecting the lawn's appearance and health. Furthermore, due to the structural layout of the trimming module, the lawnmower robot's ability to move forward, backward, or turn to overcome obstacles is limited, reducing terrain adaptability and, to some extent, restricting the overall working efficiency and operational stability of the machine.

[0028] As shown in Figure 1, Figure 2 and Figure 3 As shown, in order to solve the above-mentioned technical problems, this application provides a grass-cutting mechanism, which includes a grass-cutting module 200 and a sliding support 300. The grass-cutting module 200 is used to perform grass-cutting operations. The sliding support 300 is connected to the grass-cutting module 200, and a guide surface 310 is formed at the bottom end of the sliding support 300. The distance between the lowest point of the guide surface 310 and the ground is less than the distance between the lowest point of the grass-cutting module 200 and the ground.

[0029] In these embodiments, this application provides a mowing mechanism. This mowing mechanism can be applied to lawn mowing robots, and is particularly suitable for solving the technical problems in the prior art where excessive swinging of the tail mowing module 200, damage to the lawn, and poor obstacle crossing ability are caused by changes in the posture of the lawn mowing robot.

[0030] The mowing module 200 is used to perform trimming operations on the edges or corners of the lawn. In this embodiment, the mowing module 200 mainly includes a motor and a mowing head 210 connected to the output shaft of the motor. A high-speed rotating mowing rope 211 is mounted on the mowing head 210. The mowing module 200 is fixedly connected to the sliding support 300 via a connecting structure (such as a connecting arm). In actual operation, the mowing module 200 can rotate under the drive of the motor to cut the lawn close to the edge of the mowing robot.

[0031] The sliding support 300 is connected to the mowing module 200, providing support and guidance for the mowing module 200. A guide surface 310 is formed at the bottom end of the sliding support 300. This guide surface 310 has an inclined or arc-shaped structure in the forward direction of the mowing robot, allowing it to contact the ground and slide along it. By setting the distance between the lowest point of the guide surface 310 and the ground to be less than the distance between the lowest point of the mowing module 200 and the ground, it is ensured that when the mowing robot swings, the guide surface contacts the ground before the mowing module, providing protection.

[0032] When the lawnmower robot is working on level ground, the guide surface 310 of the sliding support 300 is above the ground, and the mowing module 200 is at its normal working height, so as to mow the lawn appropriately.

[0033] When the lawnmower robot goes uphill, the rear of a traditional mowing mechanism will press down due to the forward tilt of the vehicle, causing the mowing module 200 to overcut into the lawn. However, in this embodiment, as the vehicle tilts upward, the guide surface 310 of the sliding support 300 first contacts the ground and generates an upward supporting force. Since the lowest point of the guide surface 310 is lower than the mowing module 200, this supporting force is transmitted to the mowing module 200 through the sliding support 300, thereby limiting the downward swing of the mowing module 200 relative to the ground, preventing it from overcutting the lawn, and avoiding bald patches.

[0034] In addition, since the sliding support 300 is located below the mowing module 200 and forms a continuous guide surface 310, when the mowing robot moves forward, backward or turns to overcome obstacles, the guide surface 310 can guide the mowing mechanism to smoothly cross small stones, tree roots or areas of sudden terrain changes, which significantly improves the obstacle crossing ability and operational stability of the whole machine.

[0035] Therefore, this application can effectively suppress swaying. By setting the lowest point of the guide surface 310 below the working position of the mowing module 200, the ground reaction force is used to actively limit the downward swing of the mowing module 200, solving the problem of excessive grass cutting when going uphill. Furthermore, it improves obstacle-crossing ability; the guide surface 310 of the sliding support 300 serves as an auxiliary support structure, enhancing the mowing mechanism's passability in complex terrain. Moreover, it eliminates the need for complex sensors or active control mechanisms, achieving adaptive adjustment through a mechanical structure, resulting in low cost and high reliability.

[0036] like Figure 1 and Figure 2 As shown, in some embodiments, the mowing mechanism further includes a swing member 100, which has a first connecting end and a second connecting end. The swing member 100 is an elastic member to allow the second connecting end to elastically displace relative to the first connecting end and to reset after pressure is released.

[0037] In these embodiments, the mowing mechanism further includes a swing element 100 to enhance the adaptability and cushioning performance of the mowing module 200 in complex terrain.

[0038] The swing member 100 has a first connecting end and a second connecting end. The first connecting end is used to connect to the lawnmower robot frame, and the second connecting end is connected to the sliding support member 300 or the mowing module 200.

[0039] Crucially, the swing member 100 is an elastic component. For example, the swing member 100 is made of an engineering plastic (such as polyamide) or an elastic metal material (such as spring steel) with a certain degree of elasticity, and is generally in the shape of a bent arm or an integrated elastic hinge structure. This elastic design allows the second connecting end to elastically shift (i.e., undergo slight deformation or swing) relative to the first connecting end when subjected to external forces (such as obstacle crossing impacts or reaction forces caused by uneven ground), and automatically reset after the external force is released. For example, in this application, the swing member 100 includes a parallelogram linkage mechanism, the links of which are connected to the mowing module 200, and the crank of the parallelogram linkage mechanism is an elastic element.

[0040] When the lawnmower robot encounters a protruding obstacle (such as tree roots or rocks) during operation, the guide surface 310 of the sliding support 300 first contacts the obstacle and presses upward. This pressure is transmitted through the sliding support 300 to the second connecting end of the swing member 100, causing the swing member 100 to undergo elastic deformation. This elastic displacement absorbs some of the impact energy, playing a buffering and shock-absorbing role, and preventing rigid collisions from damaging the lawn mowing module 200 or the lawnmower robot.

[0041] Meanwhile, since the swing element 100 allows the second connecting end to move, the mowing module 200 can float up and down within a certain range according to the terrain undulations, further enhancing its terrain-following ability. For example, on slightly uneven ground, the mowing module 200 can better conform to the ground contour and improve the uniformity of the mowing.

[0042] More importantly, the elastic reset characteristic of the swing component 100 ensures that after crossing an obstacle or leaving the slope, the mowing module 200 can quickly return to the preset working height, maintain operational stability, and avoid cutting abnormalities caused by permanent deformation or instability.

[0043] The guide surface 310 of the sliding support 300 limits the maximum downward swing limit of the mowing module 200, preventing over-cutting when going uphill; while the swing component 100 provides dynamic buffering and flexible adjustment capabilities, improving obstacle crossing smoothness and impact resistance. The two work together to achieve dual protection and optimized control of the working posture of the mowing module 200.

[0044] Therefore, the swing element 100, acting as an elastic component, effectively absorbs the impact of obstacle crossing and protects the mowing mechanism. It allows the mowing module 200 to float elastically within a certain range, better adapting to complex terrain. The elastic characteristics ensure that the mechanism returns to its original position after disturbance, guaranteeing operational consistency.

[0045] like Figure 3 As shown, in some embodiments, the guide surface 310 is an arc surface.

[0046] Based on these embodiments, the guide surface 310 is constructed as a continuous arcuate surface, the cross-section of which may be circular, elliptical, or other smooth curved contours. This arcuate surface extends along the forward direction of the lawnmower robot, forming a sliding curved surface that convexes towards the ground.

[0047] When the lawn mower encounters small bumps in the ground (such as pebbles, tree roots, or terrain ridges), the curved guide structure, like a sled or the bow of a boat, guides the sliding support 300 to smoothly climb over the obstacle, avoiding sharp edges from causing jamming or violent impacts. This gradual contact effectively reduces obstacle-crossing resistance and improves passage efficiency.

[0048] The curved surface structure allows the contact between the sliding support 300 and the ground to gradually transition from point or line contact. The contact area naturally expands as the pressure increases, thereby dispersing local pressure and reducing indentations or damage to the lawn. It is especially suitable for soft or damp ground.

[0049] Regardless of whether the lawnmower is uphill, downhill, or tilted, the guide surface 310 maintains a stable contact with the ground. Its curvature design can be optimized for typical terrain (e.g., an arc with a radius of 20-50mm) to ensure effective support and restraint at different tilt angles.

[0050] Compared to flat or angular structures, curved surfaces provide more uniform friction during sliding, reducing vibration and noise, which helps extend the service life of the sliding support 300 and improves the user experience.

[0051] like Figure 3 As shown, in some embodiments, the sliding support 300 includes a ball head 350, which is connected to the mowing module 200, and the bottom of the ball head 350 is provided with the guide surface 310.

[0052] In these embodiments, this application also provides a specific structural implementation, wherein the sliding support 300 includes a ball head 350, which is connected to the mowing module 200, and the bottom of the ball head 350 is provided with the guide surface 310.

[0053] The ball head 350 is a structural component that is generally spherical or hemispherical, and its top is fixed to the bottom or rear side of the mowing module 200 by connectors (such as screws, clips, or welding). The bottom surface of the ball head 350 forms a guide surface 310. As described in the previous embodiment, the guide surface 310 is an arc surface. Therefore, the bottom surface of the ball head naturally forms a continuous arc-shaped guide surface 310.

[0054] The ball head 350 can be made of wear-resistant, self-lubricating materials such as polytetrafluoroethylene, ultra-high molecular weight polyethylene, nylon, or polished metal. This material selection is designed to reduce the coefficient of friction between the ball head 350 and the ground, ensuring smooth gliding on the grass surface and reducing drag and material wear.

[0055] Because the structure of the ball head 350 naturally has a complete curved bottom surface, there is no need to process complex curved surfaces, which facilitates mold forming or machining, is conducive to mass production, and reduces manufacturing costs.

[0056] When the ball head 350's dome-shaped bottom contacts the ground, it can automatically adjust the contact point according to the robot's posture. Whether the lawnmower is on a horizontal, uphill, or downhill slope, the ball head 350 can always use its center of curvature as a fulcrum to achieve multi-directional adaptive contact, effectively dispersing pressure and avoiding localized stress concentration.

[0057] The ball head 350 can be designed as an independent replaceable component. When the guide surface 310 wears down due to long-term use, the user or maintenance personnel can replace the ball head 350 separately without replacing the entire mowing module 200 or the sliding support structure, thus improving maintenance convenience and economy.

[0058] like Figure 4 As shown, in some embodiments, the mowing module 200 includes a frame 220, and the frame 220 and the sliding support 300 are detachably connected.

[0059] Based on any of the above embodiments, this application also provides a structure that is easy to assemble and maintain, wherein the grass trimming module 200 includes a frame 220, and the frame is detachably connected to the sliding support 300.

[0060] The frame 220 is the main load-bearing structure of the mowing module 200, typically made of metal (such as aluminum alloy or stainless steel) or high-strength engineering plastics (such as glass fiber reinforced nylon), possessing high structural rigidity and impact resistance. The frame 220 integrates and mounts the mowing motor, mowing head 210 assembly, transmission mechanism, and connection interface with the sliding support 300. This connection ensures structural strength.

[0061] Crucially, the frame 220 and the sliding support 300 are fixed by a detachable connection. In this embodiment, this connection method includes, but is not limited to: Threaded fastener connection method, such as using screws or bolts to pass through the mounting holes on the skeleton 220 and screw into the pre-set threaded holes of the sliding support 300.

[0062] The snap-fit ​​connection method involves setting elastic hooks and slots on the frame 220 and the sliding support 300 respectively, which can be quickly locked and released by pressing.

[0063] The quick-release pin connection uses a locating pin with a handle. It is locked by inserting it into the aligned through hole and can be separated by pulling it out.

[0064] With its detachable connection, the mowing module 200 can be removed from the sliding support 300 as a standalone functional unit. When the mowing rope 211 is exhausted, the motor fails, or the mowing head 210 is damaged, users or technicians can replace or repair the mowing module 200 simply by loosening the connector, without disassembling the entire tail mechanism, significantly improving maintenance efficiency.

[0065] Different operational needs may require different types of trimmer heads 210 (such as straight rope, spiral rope, multi-strand rope) or motors of different power. Through standardized detachable interfaces, users can quickly replace trimmer modules 200 with different configurations to achieve functional expansion and personalized adaptation.

[0066] like Figure 3 , Figure 4 and Figure 6 As shown, in some embodiments, the mowing mechanism further includes a cutting member 400, which is disposed on the sliding support member 300 and has a blade 410. The blade 410 and the outer periphery of the mowing module 200 are spaced apart. The cutting edge of the blade 410 is oriented in the opposite direction to the rotation direction of the mowing rope 211 released by the mowing module 200. When the mowing rope 211 is in operation, the blade can contact and cut the mowing rope 211.

[0067] Based on these embodiments, the mowing mechanism also includes a cutting element 400 for automatically cutting the high-speed rotating mowing rope 211 during the mowing operation to maintain its effective working length and avoid interference with its own structure due to the excessive length of the mowing rope 211.

[0068] The cutting element 400 is disposed on the sliding support 300, specifically fixed to the side or rear of the sliding support 300, located near the rotation path of the mowing module 200. The cutting element 400 has a blade 410, which is formed with a sharp cutting edge by means of stamping, cutting, or injection molding inserts. For example, the cutting element 400 may be a blade.

[0069] Crucially, the blade 410 maintains a certain distance from the outer periphery of the mowing module 200 (i.e., the outermost contour of the mowing head 210 housing), which is greater than the outer periphery distance corresponding to the target working radius of the mowing rope 211, so that the end of the mowing rope 211 that exceeds the target length can enter the cutting area of ​​the blade 410.

[0070] Furthermore, the cutting edge of the blade 410 is set to face away from the rotation direction of the mowing rope 211 released from the mowing module 200. For example, if the mowing head 210 rotates clockwise (viewed from above), the cutting edge is oriented counterclockwise or radially inward, so that when the rotating mowing rope 211 leaves the cutting edge area, its direction of movement forms a scraping or shearing angle with the sharp side of the cutting edge, thereby achieving efficient cutting.

[0071] When the mowing module 200 starts and rotates at high speed, the mowing rope 211 extends outward under centrifugal force, and its end sweeps across the blade 410 of the cutting element 400. Since the blade faces the opposite direction to the movement of the mowing rope 211, the mowing rope 211 is contacted and cut by the sharp blade 410 the instant it rotates away from the blade. This process occurs periodically, automatically trimming the ends of the mowing rope 211 that have become dull due to wear or forked due to collisions with obstacles, ensuring that the mowing rope 211 always maintains a sharp and neat cutting end, thereby maintaining stable cutting efficiency and lawn trimming quality.

[0072] like Figure 4 and Figure 5 As shown, in some embodiments, the portion of the sliding support 300 located below the mowing module 200 has a first guide surface 320. The height of the first guide surface 320 gradually increases in the rotation direction of the mowing rope 211. The blade 410 is located in the extension direction of the first guide surface 320 to guide and lift the mowing rope 211 to the blade 410.

[0073] Based on the above embodiment with cutting member 400, this application further optimizes the cutting path and guiding mechanism of the grass trimming rope 211, wherein the portion of the sliding support member 300 located below the grass trimming module 200 is provided with a first guiding surface 320.

[0074] The first guide surface 320 is formed in the lower side region of the sliding support 300, located downstream of the rotation path of the mowing module 200 (i.e., the direction of movement after the mowing rope 211 is thrown out). The first guide surface 320 has a sloping or spiral upward structure along the rotation direction of the mowing rope 211 (e.g., clockwise), and its height gradually increases from the starting end to the end, forming an upwardly inclined guide channel.

[0075] Crucially, the blade 410 of the cutting element 400 is located at the end or in the extending direction of the first guide surface 320, so that after the straw rope 211 is guided and lifted, its end naturally enters the cutting area of ​​the blade 410.

[0076] When the mowing module 200 rotates at high speed, the mowing rope 211 is thrown out from the mowing head 210 under the action of centrifugal force, first passing through the gap area between the outer periphery of the mowing module 200 and the sliding support 300. Then, the end of the mowing rope 211 contacts the initial low position area of ​​the first guide surface 320.

[0077] As the mowing module 200 continues to rotate, the mowing rope 211 slides along the surface of the first guide surface 320. As the height of the first guide surface 320 gradually increases along the direction of rotation, the mowing rope 211 is gradually lifted during the movement, its rotation radius increases accordingly, and its end position is guided to a higher spatial plane.

[0078] When the trimming rope 211 moves to the end of the first guide surface 320, it has been raised to the height region where the blade 410 is located. At this time, the trimming rope 211 continues to move tangentially, and its end contacts the cutting edge of the blade 410. Since the cutting edge faces away from the direction of movement of the trimming rope 211 (as described above), the trimming rope 211 is effectively cut by the sharp blade 410 at the moment of separation, completing automatic trimming.

[0079] Clearly, the first guide surface 320 provides continuous physical support and guidance for the straw rope 211, preventing it from swinging or jumping randomly before cutting, ensuring a stable cutting position each time, and improving cutting consistency. Furthermore, by controlling the tilt angle and curvature of the first guide surface 320, the contact angle between the straw rope 211 and the blade 410 can be precisely adjusted, forming a more ideal shearing or scraping angle, reducing cutting resistance, and extending the life of the blade 410.

[0080] During low-speed start-up, it is beneficial to quickly guide the cutting rope 211 to the height of the blade 410, which is beneficial to adjust the rope's straightening state when starting at high speed, so that it enters the cutting range of the blade 410 for cutting.

[0081] For example, in this embodiment, the first guide surface 320 is an arc surface. Of course, in other embodiments, the first guide surface 320 may also be an inclined surface.

[0082] like Figure 4 and Figure 5 As shown, in some embodiments, the sliding support 300 has a second guide surface 330, which is disposed relative to the outer periphery of the mowing module 200. Specifically, in the direction away from the rotation axis of the mowing rope 211, the blade 410 and the second guide surface 330 are sequentially disposed, with the blade 410 protruding from the second guide surface 330; in the rotation direction of the mowing rope 211, the second guide surface 330 gradually approaches the rotation axis.

[0083] In these embodiments, the present application further optimizes the constraint and guiding path of the straw rope 211 in the cutting area, wherein the sliding support 300 is also provided with a second guide surface 330.

[0084] The second guide surface 330 is located in the inner area of ​​the sliding support 300, relative to the outer periphery of the mowing module 200 (i.e. the outermost contour of the mowing head 210 housing), and is located inside the rotation path of the mowing rope 211 (on the side closer to the rotation axis).

[0085] In the radial direction away from the rotation axis of the straw rope 211, the second guide surface 330 is located on the outer side, while the blade 410 of the cutting member 400 is located on the inner side, and the two are arranged sequentially in the radial direction. Moreover, the cutting edge of the blade 410 protrudes from the surface of the second guide surface 330, ensuring that it can preferentially contact and cut the straw rope 211.

[0086] In the direction of rotation of the mowing rope 211 (e.g., clockwise), the outline of the second guide surface 330 is a centripetal spiral or a converging curve, that is, its position gradually approaches the rotation axis of the mowing module 200, so that the distance between the second guide surface 330 and the rotation axis continuously decreases from the starting end to the end.

[0087] When the mowing module 200 is running, the second guide surface 330 is used to avoid obstructing the length of the automatically exiting mowing rope 211, ensuring that the mowing rope 211 contacts the blade 410 of the cutting piece 400 first during its rotation after exiting the wire, which is beneficial for the automatic cutting of the mowing rope 211. Obviously, obstructing the blade 410 of the cutting piece 400 improves the efficiency of the blade 410 (e.g., a blade) in cutting the mowing rope 211.

[0088] Under the upward lifting action of the first guide surface 320, the straw rope 211 is stably guided and aligned with the blade 410 protruding from the second guide surface 330. Since the blade 410 is protruding and the cutting edge faces away from the direction of rotation, the straw rope 211 is efficiently cut during rotation.

[0089] For example, in this embodiment, the second guide surface 330 is an arc surface. Of course, in other embodiments, the second guide surface 330 may also be a slope surface.

[0090] like Figure 4 and Figure 5 As shown, in some embodiments, the sliding support 300 has a third guide surface 340, which is disposed relative to the outer periphery of the mowing module 200. In the rotation direction of the mowing rope 211, the third guide surface 340 is located downstream of the blade 410 and outside the rotation range of the mowing rope 211.

[0091] In these embodiments, this application further improves the rear path management and safety protection functions of the grass cutting mechanism, wherein the sliding support 300 is also provided with a third guide surface 340.

[0092] The third guide surface 340 is disposed in the rear region of the sliding support 300, and is arranged relative to the outer periphery of the mowing module 200, located downstream of the blade 410 in the rotation direction of the mowing rope 211. For example, if the mowing module 200 rotates clockwise, the third guide surface 340 is located on the right or right rear side of the blade 410.

[0093] Crucially, the third guide surface 340 is designed to be located outside the normal rotation range of the trimming rope 211. That is, when the trimming module 200 rotates at high speed, the circumferential path formed by the maximum dynamic extension radius of the trimming rope 211 under centrifugal force will not contact the third guide surface 340. This ensures that the third guide surface 340 does not interfere with the free rotation of the trimming rope 211 during normal operation, facilitating the rotation of the trimming rope 211 along a predetermined arc.

[0094] For example, in this embodiment, the third guide surface 340 is an arc surface centered on the rotation axis. Of course, in other embodiments, the third guide surface 340 may also be an inclined surface.

[0095] In some embodiments, this application also provides a lawn mowing robot, which includes a mobile vehicle body and a mowing mechanism as described in any of the above embodiments, wherein the mobile vehicle body and the mowing mechanism are connected.

[0096] Since the aforementioned mowing mechanism has the aforementioned technical effects, a mowing robot that includes the mowing mechanism should have the same technical effects, which will not be elaborated here.

[0097] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limitations; therefore, other examples of exemplary embodiments may have different values.

[0098] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0099] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.

Claims

1. A grass-cutting mechanism, characterized in that, The mowing mechanism includes: The mowing module (200) is used to perform mowing operations; A sliding support (300) is connected to the mowing module (200). The bottom end of the sliding support (300) has a guide surface (310). The distance between the lowest point of the guide surface (310) and the ground is less than the distance between the lowest point of the mowing module (200) and the ground.

2. The mowing mechanism according to claim 1, characterized in that, The mowing mechanism further includes a swing member (100) having a first connecting end and a second connecting end. The swing member (100) is an elastic member to allow the second connecting end to elastically shift relative to the first connecting end and reset after pressure is released.

3. The mowing mechanism according to claim 1, characterized in that, The guide surface (310) is an arc surface.

4. The mowing mechanism according to claim 1, characterized in that, The mowing mechanism also includes a cutting component (400), which is disposed on the sliding support (300). The cutting component (400) has a blade (410), which is spaced apart from the outer periphery of the mowing module (200). The cutting edge of the blade (410) faces away from the rotation direction of the mowing rope (211) released by the mowing module (200). When the mowing rope (211) is in operation, the blade (410) can contact and cut the mowing rope (211).

5. The mowing mechanism according to any one of claims 1 to 4, characterized in that, The sliding support (300) includes a ball head (350), which is connected to the mowing module (200), and the bottom of the ball head (350) is provided with the guide surface (310).

6. The mowing mechanism according to claim 4, characterized in that, The mowing module (200) includes a frame (220), and the frame (220) and the sliding support (300) are detachably connected.

7. The mowing mechanism according to claim 6, characterized in that, The sliding support (300) has a first guide surface (320) and is located below the mowing module (200); in the rotation direction of the mowing rope (211), the height of the first guide surface (320) gradually increases, and the blade (410) is located in the extension direction of the first guide surface (320) to guide and lift the mowing rope (211) to the blade (410).

8. The mowing mechanism according to claim 6, characterized in that, The sliding support (300) has a second guide surface (330) which is disposed relative to the outer periphery of the mowing module (200); wherein, in a direction away from the rotation axis of the mowing rope (211), the blade (410) and the second guide surface (330) are disposed sequentially, and the blade (410) protrudes from the second guide surface (330); in the rotation direction of the mowing rope (211), the second guide surface (330) gradually approaches the rotation axis.

9. The mowing mechanism according to claim 6, characterized in that, The sliding support (300) has a third guide surface (340) which is disposed relative to the outer periphery of the mowing module (200). In the rotation direction of the mowing rope (211), the third guide surface (340) is located downstream of the blade (410) and outside the rotation range of the mowing rope (211).

10. A lawnmower robot, characterized in that, The lawn mowing robot includes a mobile vehicle body and a mowing mechanism as described in any one of claims 1 to 9, wherein the mobile vehicle body and the mowing mechanism are connected.

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