A grass rolling prevention mowing robot and a baffle for a mowing robot

Abstract

The application belongs to the technical field of mowing robots, and discloses a mowing robot capable of preventing grass from being rolled and a baffle for the mowing robot. The mowing robot comprises a robot main body, a rotating motor, an axle and a rotating wheel. The rotating motor is in transmission connection with the rotating wheel through the axle and is used for driving the rotating wheel to rotate. A gap is formed between the robot main body and the rotating wheel. The bottom of the robot main body is provided with a baffle. The baffle comprises a fixing part and a shielding part. The fixing part is fixedly connected with the bottom of the robot main body. The shielding part extends into the gap and is located directly below the axle. In the walking process of the mowing robot, the baffle can prevent the grass below from being rolled to the axle or the rotating wheel due to the blocking effect of the baffle, so that the walking of the mowing robot is avoided from being affected, the frequency of manual cleaning is reduced, the cost of manual maintenance is effectively reduced, and the automation efficiency of the mowing robot is improved.

Description

Technical Field

[0001] This application belongs to the field of lawn mowing robot technology, and particularly relates to an anti-curling lawn mowing robot and a baffle for the lawn mowing robot. Background Technology

[0002] The rotary motor serves as the power source for the wheeled lawnmower robot, driving the wheels to rotate via an axle to enable movement. Since the wheels need to move relative to the robot body, a clearance must be maintained between them. However, during operation, grass at the bottom of the robot can easily get caught on the axle or wheels (such as the external rotor motor of the drive wheels). This grass accumulation increases resistance and reduces endurance. Furthermore, grass clippings can clog the axle bearings, causing motor overload and shutdown, requiring frequent manual cleaning, increasing labor costs, and reducing automation efficiency. Utility Model Content

[0003] The purpose of this application is to provide a grass-cutting robot with anti-grass-rolling properties and a baffle for the grass-cutting robot, which can prevent grass clippings from rolling onto or accumulating on the axle or wheel of the grass-cutting robot.

[0004] In a first aspect, this application provides a lawnmower robot designed to prevent grass curling, comprising a robot body, a rotary motor, an axle, and a rotating wheel. The rotary motor is connected to the rotating wheel via the axle to drive the rotating wheel to rotate. There is a gap between the robot body and the rotating wheel. A baffle is provided at the bottom of the robot body, the baffle having a fixing part and a blocking part. The fixing part is fixedly connected to the bottom of the robot body, and the blocking part extends into the gap and is located directly below the axle.

[0005] In some implementations, the rotary motor is an external rotor motor, which includes an inner stator and an outer rotor. The axle includes a connecting shaft and a rotating shaft. One end of the connecting shaft is fixedly connected to the robot body, and the other end is fixedly connected to the inner stator. The rotating shaft is sleeved on the outer periphery of the connecting shaft through a bearing. The rotating shaft has a cavity inside, and the outer rotor is fixedly installed in the cavity. The rotating shaft is fixedly connected to the wheel. The shielding part is located directly below the rotating shaft.

[0006] In some implementations, the bottom of the robot body is provided with a connecting shaft mounting base, one end of the connecting shaft is fixedly installed in the connecting shaft mounting base, and an annular flange extends from one end of the connecting shaft mounting base toward the rotating wheel. The annular flange is located on the periphery of the junction of the connecting shaft and the rotating shaft.

[0007] In some implementations, the rotary motor is an internal rotor motor, which is fixed to the robot body. The output shaft of the internal rotor motor is fixedly connected to one end of the wheel axle, and the other end of the wheel axle is fixedly connected to the wheel.

[0008] In some implementations, the blocking portion includes a lower extension and a blocking flange. The lower extension extends downward from the outer end of the fixing portion, and the blocking flange extends from the edge of the lower extension toward the rotating wheel.

[0009] In some implementations, the robot body has a narrowed portion with a width smaller than that of the robot body at the part corresponding to the rotating wheel. The outer side of the narrowed portion forms a stepped surface at the junction with the outer side of the adjacent part on the robot body, and the stepped surface corresponds to the gap.

[0010] In some implementations, the lawnmower robot also includes a cover plate, one side of which is fixedly connected to the robot body, and the other side extends outward and is located directly above the wheel.

[0011] In some implementations, the robot body includes a chassis frame, and baffles are fixed on both sides of the bottom of the chassis frame corresponding to the positions of the rotating wheels.

[0012] In some implementations, a main cutter head is provided at the middle position of the bottom of the robot body, and a secondary cutter head is provided on one side of the bottom of the robot body. The secondary cutter head protrudes from the outer side of the robot body and is aligned with the forward direction of the rotary wheel.

[0013] A second aspect of this application provides a baffle for a lawnmower robot, the lawnmower robot including a robot body, a wheel and an axle, the baffle being installed on the bottom of the robot body corresponding to the wheel, the baffle having a fixing part and a blocking part, the fixing part being fixedly connected to the bottom of the robot body, the blocking part extending into the gap between the robot body and the wheel, and located directly below the axle.

[0014] Compared with existing technologies, the advantages of this application are as follows: The anti-grass-rolling lawnmower robot provided in this application has a baffle at the bottom of the robot body. The blocking part of the baffle extends into the gap between the robot body and the wheel, and is located directly below the wheel axle. During the walking process, due to the blocking effect of the baffle, it can prevent grass clippings from rolling onto the wheel axle or wheel, thereby avoiding affecting the walking of the lawnmower robot, reducing the frequency of manual cleaning, effectively reducing manual maintenance costs, and improving the automation efficiency of the lawnmower robot. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the top angle of a lawnmower robot that prevents grass from curling, provided in an embodiment of this application.

[0016] Figure 2 This is a schematic diagram of the bottom angle of a lawnmower robot that prevents grass from rolling, provided in an embodiment of this application.

[0017] Figure 3 This is an exploded structural diagram of a grass-mowing robot that prevents grass curling, provided in an embodiment of this application.

[0018] Figure 4 This is a cross-sectional schematic diagram of the impeller, the external rotor motor, and the impeller provided in the embodiments of this application.

[0019] Figure 5 This is a schematic diagram of the structure of a baffle provided in an embodiment of this application.

[0020] Figure 6 This is a schematic diagram of the structure of the impeller, the external rotor motor, and the impeller provided in the embodiments of this application.

[0021] Figure 7 This is an exploded structural diagram of the impeller, external rotor motor, and impeller provided in the embodiments of this application.

[0022] Figure 8 This is a schematic diagram of the internal rotor motor, the impeller, and the impeller structure provided in the embodiments of this application.

[0023] Figure 9 This is an exploded structural diagram of the baffle and chassis frame provided in the embodiments of this application.

[0024] Figure 10 This is a schematic diagram of the structure of a lawnmower robot that removes the cover plate to prevent grass curling, as provided in an embodiment of this application.

[0025] Illustration: Robot body 1, chassis frame 11, limiting groove 111, connecting shaft mounting seat 12, annular flange 121, narrowing part 13, stepped surface 14, rotary motor 2, external rotor motor 2a, inner stator 21a, external rotor 22a, internal rotor motor 2b, output shaft 2c, wheel axle 3, connecting shaft 31, rotating shaft 32, cavity 321, rotating wheel 4, baffle 5, fixing part 51, shielding part 52, lower extension 521, shielding flange 522, rib 523, bearing 6, cover plate 7, main cutter head 8a, secondary cutter head 8b, gap a. Detailed Implementation

[0026] To make the inventive objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] The rotary motor serves as the power source for the lawnmower robot's movement. It is connected to the wheel drive via an axle, driving the wheel to rotate and enabling the robot's movement. Since the wheel needs to move relative to the robot body, a gap needs to be left between the robot body and the wheel. However, in traditional designs, this gap can easily become the main path for grass to get tangled.

[0028] To address the above problems, this application proposes an anti-grass-rolling lawnmower robot. Please refer to... Figures 1 to 4 The diagram illustrates the overall structure of a lawnmower robot, which includes a robot body 1, a rotary motor 2, axle 3, and rotating wheels 4. The rotary motor 2 is connected to the rotating wheels 4 via the axle 3, driving the rotating wheels 4 to rotate. The two rotating wheels 4 are respectively located on both sides of the robot body 1, with a gap 'a' between them.

[0029] The bottom of the robot body 1 is equipped with a baffle 5, please refer to... Figure 5 The baffle 5 has a fixing part 51 and a blocking part 52. The fixing part 51 is fixedly connected to the bottom of the robot body 1, and the blocking part 52 extends into the gap a and is located directly below the wheel axle 3.

[0030] Among them, the baffle 5 is a structural component used to prevent grass from entering a specific area. Its main function is to intercept grass through a physical barrier.

[0031] Specifically, the fixing part of the baffle 5 can be fixedly connected to the bottom of the robot body by means of bolt connection, welding or bonding. For example, the fixing part 51 can be fastened to the chassis frame 11 of the robot body 1 by bolts, or the fixing part 51 and the chassis frame 11 can be integrated into a structure by welding.

[0032] The design of the shielding part 52 can be implemented in a variety of ways, such as by stamping of metal sheet, injection molding of plastic or molding of composite material. Its shape can be designed as a flat plate, arc or other geometric shape that can adapt to the gap a and the shape of the wheel axle 3, so as to ensure that it can effectively extend into the gap a and cover the area directly below the wheel axle 3.

[0033] The innovation of this application lies in the use of a baffle 5 structure, specifically by utilizing the shielding part 52 to extend into the gap between the robot body 1 and the rotating wheel 4 and positioned directly below the wheel axle 3. This structure maximally covers the critical area where grass might get tangled, forming an effective physical barrier and thus blocking the path of grass tangling into the gap. This design directly solves the problems mentioned in the background art, such as grass tangling into the gap leading to grass clippings accumulation, increased movement resistance, and wheel axle bearing blockage. This ensures the normal operation and efficient work of the lawnmower robot, systematically reduces the risk of mechanical failure caused by grass tangling, reduces the frequency of manual cleaning, effectively lowers maintenance costs, and improves the automation efficiency of the lawnmower robot.

[0034] Furthermore, in this embodiment, please continue to refer to... Figure 5 The baffle 5's blocking portion 52 includes a lower extension 521 and a blocking flange 522. The lower extension 521 extends downward from the outer end of the fixing portion 51, and the blocking flange 522 extends from the edge of the lower extension 521 toward the rotating wheel 4. The outer end of the fixing portion 51 is the end closest to the rotating wheel 4.

[0035] Specifically, the lower extension 521 refers to the part that extends vertically downward from the outer end of the fixing part 51. It can be made by stamping or injection molding of metal sheet. The height of the lower extension 521 should be greater than the radius of the wheel axle 3 and less than the radius of the wheel 4. The purpose is to cover the gap a area in the vertical direction and effectively intercept grass clippings in the inner side direction from being rolled onto the wheel axle 3.

[0036] The shielding flange 522 refers to the part that extends horizontally from the edge of the lower extension 521 and protrudes towards the wheel 4. It can be fixedly connected to the lower extension 521 by integral molding or welding. Its purpose is to intercept the grass clippings below from being rolled onto the wheel axle 3 or the rotary motor 2.

[0037] Optionally, in order to improve the structural strength of the lower extension 521 and the shielding flange 522, a rib 523 may be added. The rib 523 is a triangular rigid member, with one side fixedly connected to the lower extension 521 and the other side fixedly connected to the shielding flange 522.

[0038] In detail, this solution optimizes the geometry of the shielding part 52 to construct a multi-layered physical barrier in the gap a between the robot body 1 and the rotating wheel 4. The lower extension 521 extends naturally downward from the outer end of the fixing part 51, making full use of the connection point between the fixing part 51 and the robot body 1 as the starting position, avoiding the formation of new gaps at the bottom of the robot body 1, and ensuring a seamless connection between the baffle 5 and the robot body 1. The shielding flange 522 extends directly from the edge of the lower extension 521 towards the rotating wheel 4, continuing the continuity of vertical coverage, and forming an L-shaped sealing structure in the area directly below the wheel axle 3, strengthening the three-dimensional coverage of the gap a.

[0039] In other embodiments, the edges of the shield 52 may be provided with a flexible material layer, such as a rubber strip or silicone pad, to reduce wear caused by collisions with obstacles. Furthermore, the surface of the shield may be specially treated, such as by applying an anti-grass adhesion coating or by increasing its smoothness, thereby reducing the likelihood of grass clippings adhering to it.

[0040] In this embodiment, please refer to Figure 4 , Figure 6 and Figure 7 The rotary motor 2 is an external rotor motor 2a, which includes an inner stator 21a and an external rotor 22a. The wheel axle 3 includes a connecting shaft 31 and a rotating shaft 32. One end of the connecting shaft 31 is fixedly connected to the robot body 1, and the other end is fixedly connected to the inner stator 21a. The rotating shaft 32 is sleeved on the outer periphery of the connecting shaft 31 through a bearing 6. The rotating shaft 32 has a cavity 321 inside, and the external rotor 22a is fixedly installed in the cavity 321. The rotating shaft 32 is fixedly connected to the wheel 4, and the shielding part 52 is located directly below the rotating shaft 32.

[0041] Specifically, an external rotor motor refers to a type of motor in which the rotating parts are the outer structure. It can be implemented using a brushless DC motor or a permanent magnet synchronous motor. The inner stator 21a is the stationary part, used to generate a magnetic field. It can be made by stacking silicon steel sheets and winding coils to form an electromagnetic field. The outer rotor 22a is the rotating part, which can be made by embedding permanent magnets in a metal ring, with the aim of providing driving force and reducing the overall size.

[0042] The axle 3 is designed with two parts: a connecting shaft 31 and a rotating shaft 32. The connecting shaft 31 supports and fixes the inner stator 21a. One end of the connecting shaft 31 is fixedly connected to the robot body 1, and the other end is fixedly connected to the inner stator 21a to ensure the stability of the inner stator 21a. The rotating shaft 32 is rotatably mounted on the outer periphery of the connecting shaft 31 via a bearing 6. The bearing 6 allows for relative rotation between the two shafts while avoiding wear caused by direct friction. The rotating shaft 32 has a hollow internal structure designed to accommodate the outer rotor 22a and fix it in the cavity 321, thereby enabling the outer rotor 22a to directly drive the rotating shaft 32. Since the rotating shaft 32 is exposed at gap a, the blocking part 52 is positioned directly below the rotating shaft 32 to prevent grass clippings from rolling onto the rotating shaft 32 from the bottom through the gap.

[0043] The rotary motor 2 adopts the form of an external rotor motor 2a. Since the external rotor 22a rotates externally, grass clippings can easily get caught in the gap between the rotating shaft 32 and the connecting shaft 31. However, this embodiment effectively solves the problem of grass clippings getting caught in the external rotor area of ​​the rotary motor 2 by optimizing the structural design of the rotary motor 2 and the axle 3, combined with the reasonable layout of the baffle 5. Therefore, fixing the inner stator 21a and using the external rotor 22a as the rotation output end not only reduces the size of the rotary motor 2 but also improves the transmission efficiency.

[0044] In this embodiment, baffles 5 are fixed on both sides of the bottom of the chassis frame 11, corresponding to the positions of the rotating wheels 4.

[0045] Specifically, the chassis frame 11 refers to the frame component that serves as the main load-bearing and support structure of the robot body 1. It can be made of a rigid frame using high-strength metal materials or composite materials, with the aim of significantly improving the overall rigidity and vibration resistance of the robot body 1.

[0046] In practical applications, the chassis frame 11 can also provide precise geometric positioning; please refer to [reference needed]. Figure 9 At the positions where baffles 5 are installed on both sides of the bottom of the chassis frame 11, there are limiting grooves 111. The shape of the limiting grooves 111 corresponds to the outer contour shape of the baffles 5, making it easy to align the baffles 5 during installation and preventing the baffles 5 from shifting after installation. This ensures that the gap between the rotating wheel 4 and the robot body 1 is strictly aligned and that the shielding part 52 is always located directly below the wheel axle 3.

[0047] Furthermore, in this embodiment, a connecting shaft mounting base 12 is provided at the bottom of the robot body 1. One end of the connecting shaft 31 is fixedly installed in the connecting shaft mounting base 12. An annular flange 121 extends from the end of the connecting shaft mounting base 12 toward the rotating wheel 4. The annular flange 121 is located on the periphery of the junction of the connecting shaft 31 and the rotating shaft 32.

[0048] Specifically, the connecting shaft mounting base 12 is a structural component used to fix and support the connecting shaft 31. It can be implemented using a cylindrical or frame structure made of a material with high structural strength. Its purpose is to provide a stable mounting base for the connecting shaft 31, ensuring the positional stability of the connecting shaft 31 during operation and preventing the introduction of grass clippings due to increased gap a caused by vibration or displacement. The annular flange 121 can be understood as a ring-shaped structure extending outward from the connecting shaft mounting base 12. It can be integrated with the connecting shaft mounting base 12 through an integral molding process or welding. Its purpose is to cover the outer area where the connecting shaft 31 connects to the rotating shaft 32, preventing grass clippings from being drawn in. This layout directly targets structural weaknesses, utilizing the barrier properties of the annular flange 121 to prevent grass clippings from entering the connection between the connecting shaft 31 and the rotating shaft 32, thereby preventing increased resistance and blockage caused by grass clipping accumulation and maintaining smooth rotation of the wheel axle 3.

[0049] In some other embodiments, the rotary motor 2 may also be an internal rotor motor; please refer to [reference needed]. Figure 8 The inner rotor motor 2b is fixed on the robot body 1. The output shaft 2c of the inner rotor motor 2b is fixedly connected to one end of the wheel axle 3, and the other end of the wheel axle 3 is fixedly connected to the wheel 4.

[0050] Specifically, an internal rotor motor refers to a motor structure with the rotor placed inside, which can be implemented using a permanent magnet synchronous motor. The output shaft 2c is the power transmission component extending from the internal rotor motor. Its fixed connection to one end of the axle 3 enables direct power transmission, eliminating the cavity structure or bearing housing commonly found in external rotor motors and reducing potential points of grass jamming in the transmission path. This design, by completely enclosing the rotating components inside the stator, avoids the defects of directly exposed rotating components in external rotor motors. Since the diameters of the exposed output shaft 2c and axle 3 are much smaller than the diameters of the rotating components in external rotor motors, they are more easily covered by baffles, significantly reducing the possibility of grass clippings being rolled onto axle 3.

[0051] Furthermore, in this embodiment, please refer to Figure 10 The robot body 1 includes a narrowing section 13. The width of the narrowing section 13 is smaller than that of other parts. Corresponding to the installation position of the rotating wheel 4, the outer side of the narrowing section 13 and the outer side of the adjacent part on the robot body 1 form a stepped surface 14. The stepped surface 14 corresponds to the gap a.

[0052] Specifically, the narrowing section 13 refers to the part of the robot body 1 that reduces its width in the area corresponding to the rotating wheel 4 through structural design. This can be achieved using groove molding or a stepped transition. The stepped surface 14 refers to the abrupt change in structure formed where the outer side of the narrowing section 13 meets the outer side of the adjacent part on the robot body 1. This can be achieved through a vertical cut, an inclined surface, or an arc transition. The purpose of the stepped surface 14 is to create a physical barrier, preventing grass from entering the gap along the outer side of the wheel axle 3. This solution, combined with the design of the baffle 5, which blocks the gap a from the bottom while the stepped surface 14 provides protection from the side, works together to comprehensively solve the problem of grass entanglement, significantly improving the operating efficiency and reliability of the lawnmower robot.

[0053] In other implementation methods, please refer to [the relevant documentation]. Figure 1 The lawnmower robot may also include a cover plate 7, one side of which is fixedly connected to the robot body 1; the other side extends outward and is located directly above the wheel 4. Here, the outward direction refers to the direction away from the robot body 1.

[0054] Specifically, the cover plate 7 refers to a protective structural component, which can be made of metal sheet, high-strength plastic sheet, or composite material sheet. Since flying grass clippings and nearby tall grass may roll onto the roller 4 from above the gap, the cover plate 7 effectively intercepts grass clippings from above. Therefore, the cover plate 7, together with the baffle plate 5, forms all-around protection for the area of ​​the roller 4.

[0055] In other implementation methods, please refer to [the relevant documentation]. Figure 2 The robot body 1 has a main cutter head 8a located in the middle of its bottom, and a secondary cutter head 8b located on one side of its bottom. The secondary cutter head 8b protrudes from the outer side of the robot body 1 and is aligned with the forward direction of the rotary wheel 4.

[0056] Specifically, the main blade disc 8a refers to the core component set in the central area at the bottom of the robot body 1 for cutting grass. It can be implemented using a rotary blade structure or a multi-blade cutting mechanism. The purpose is to ensure that the grass in the central cutting area is cut stably and to maintain the uniformity of grass height below the body.

[0057] The secondary blade disc 8b is an auxiliary component located on one side edge of the robot body 1 for supplementary cutting. It can also be implemented using a rotary blade structure or a multi-blade cutting mechanism. The difference is that the size of the secondary blade disc 8b matches the width of the rotating wheel 4; that is, its width is equal to or slightly larger than the width of the rotating wheel 4. Its purpose is to expand the mowing coverage area and handle edge grass, clearing grass in front of the rear rotating wheel 4 in advance, ensuring smooth robot movement and continuous automated operation. The collaborative design of the main blade disc 8a and the secondary blade disc 8b in this solution not only solves the problem of grass not being cut in time in front of the rotating wheel 4, but also optimizes the overall mowing efficiency and movement stability.

[0058] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; furthermore, unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, they can be fixed connections, detachable connections, or integral connections; they can be direct connections or indirect connections through an intermediate medium, and they can be internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0059] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A lawnmower robot that prevents grass curling, characterized in that, The robot includes a main body, a rotary motor, axle, and a rotating wheel. The rotary motor is connected to the rotating wheel via the axle to drive the rotating wheel to rotate. There is a gap between the main body and the rotating wheel. The bottom of the main body is provided with a baffle, which has a fixing part and a blocking part. The fixing part is fixedly connected to the bottom of the main body, and the blocking part extends into the gap and is located directly below the axle.

2. The lawnmower robot according to claim 1, characterized in that, The rotary motor is an external rotor motor, which includes an inner stator and an outer rotor. The axle includes a connecting shaft and a rotating shaft. One end of the connecting shaft is fixedly connected to the robot body, and the other end is fixedly connected to the inner stator. The rotating shaft is sleeved on the outer periphery of the connecting shaft through a bearing. The rotating shaft has a cavity inside, and the outer rotor is fixedly installed in the cavity. The rotating shaft is fixedly connected to the wheel. The shielding part is located directly below the rotating shaft.

3. The lawnmower robot according to claim 2, characterized in that, The robot body has a connecting shaft mounting base at its bottom. One end of the connecting shaft is fixedly installed in the connecting shaft mounting base. An annular flange extends from the end of the connecting shaft mounting base toward the rotating wheel. The annular flange is located on the periphery of the junction between the connecting shaft and the rotating shaft.

4. The lawnmower robot according to claim 1, characterized in that, The rotary motor is an internal rotor motor, which is fixed to the robot body. The output shaft of the internal rotor motor is fixedly connected to one end of the wheel axle, and the other end of the wheel axle is fixedly connected to the rotating wheel.

5. The lawnmower robot according to claim 1, characterized in that, The shielding portion includes a lower extension and a shielding flange. The lower extension extends downward from the outer end of the fixing portion, and the shielding flange extends from the edge of the lower extension toward the rotating wheel.

6. The lawnmower robot according to claim 1, characterized in that, The robot body has a narrowed portion with a width smaller than that of the robot body at the part corresponding to the rotating wheel. The outer side of the narrowed portion forms a stepped surface at the junction with the outer side of the adjacent part on the robot body. The stepped surface corresponds to the gap.

7. The lawnmower robot according to claim 1, characterized in that, It also includes a cover plate, one side of which is fixedly connected to the robot body, and the other side extends outward and is located directly above the wheel.

8. The lawnmower robot according to claim 1, characterized in that, The robot body includes a chassis frame, and baffles are fixed on both sides of the bottom of the chassis frame corresponding to the positions of the rotating wheels.

9. The lawnmower robot according to claim 1, characterized in that, The robot body has a main cutter head located in the middle of its bottom and a secondary cutter head located on one side of its bottom. The secondary cutter head protrudes from the outer side of the robot body and is aligned with the forward direction of the rotating wheel.

10. A baffle for a lawnmower robot, the lawnmower robot comprising a robot body, a rotating wheel, and an axle, characterized in that, The baffle is installed on the bottom of the robot body at the position corresponding to the rotating wheel. The baffle has a fixing part and a blocking part. The fixing part is fixedly connected to the bottom of the robot body, and the blocking part extends into the gap between the robot body and the rotating wheel and is located directly below the wheel axle.

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