mowing machine

Abstract

Lawn mower, characterized in that it comprises the following: a drive device; a vehicle body connected to the drive device; two swivel casters arranged at the front of the vehicle body, the two swivel casters being arranged opposite each other along the width direction of the lawnmower on both sides of the vehicle body; a deflector plate attached to the front end of the vehicle body, wherein the two ends of the deflector plate are positioned within the outer contour of the two steering wheels from the perspective of the longitudinal direction of the lawnmower; where deflection parts are provided at both ends of the baffle plate in the width direction; wherein the deflecting part is located in the longitudinal direction at the end of the impact plate closest to the vehicle body, wherein a deflecting space is formed between the deflecting part and the steering wheel, which allows the steering wheels to rotate; wherein a perpendicular plane parallel to the longitudinal direction is defined as the first plane, and a perpendicular plane parallel to the lateral direction is defined as the second plane; wherein the caster comprises a first state and a second state, the projection of the caster onto the ground extending along the longitudinal direction when the caster is in the first state, the orthogonal projections of the caster and the evasive part overlapping at least partially on the first plane; wherein the caster rotates such that the projection of the caster onto the ground deviates from the longitudinal direction when the caster is in the second state, the orthogonal projections of the caster and the evasive part overlapping at least partially on the second plane when the steering angle of the caster is greater than 45°.

Description

Technical field

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

[0002] Lawn mowers are becoming increasingly popular because they can replace manual lawn care in defined areas by mowing and cutting.

[0003] In lawnmowers of this type, swivel casters are typically fitted to the front of the mower to improve steering performance. To prevent the casters from colliding with other objects while in motion, protective plates are usually mounted at the front of the mower.

[0004] However, the application of impact protection plates to lawnmowers using related technology leads to a significant lengthening of the vehicle body, which counteracts the miniaturization of lawnmowers. Content of the utility model

[0005] The embodiment of the present application provides a lawnmower wherein the design of the lawnmower is compact and it has flexible steering.

[0006] To achieve the above-mentioned purpose, the embodiment of the present application offers the following technical solutions: The first aspect of the embodiment of the present application provides a lawnmower comprising a drive device; a vehicle body connected to the drive device; two caster wheels arranged on the front part of the vehicle body, the two caster wheels being arranged opposite each other along the width direction of the lawnmower on the two sides of the vehicle body; a deflector plate attached to the front end of the vehicle body, the two ends of the deflector plate being positioned within the outer contour of the two caster wheels from the perspective of the length direction of the lawnmower; deflection parts being provided at both ends of the deflector plate in the width direction; the deflection part being located in the length direction at the end of the deflector plate being closest to the vehicle body, with a clearance being formed between the deflection part and the caster wheel, which allows the caster wheels to rotate;wherein a perpendicular plane parallel to the longitudinal direction is defined as the first plane, and a perpendicular plane parallel to the lateral direction is defined as the second plane; wherein the caster comprises a first state and a second state, the projection of the caster onto the ground extending along the longitudinal direction when the caster is in the first state, the orthogonal projections of the caster and the lateral part overlapping at least partially on the first plane; wherein the caster rotates such that the projection of the caster onto the ground deviates from the longitudinal direction when the caster is in the second state, the orthogonal projections of the caster and the lateral part overlapping at least partially on the second plane when the steering angle of the caster is greater than 45°.

[0007] The lawnmower provided according to the embodiment of the present application features a deflector plate attached to the front end of the mower body, with the deflector plate positioned within the outer contour of the two steering wheels. This allows the deflector plate to be increased without increasing the width of the lawnmower, thus facilitating miniaturization. Furthermore, it reduces the risk of collisions in narrow passages or near obstacles, thereby increasing operational safety. By attaching a deflector to the side of the deflector plate facing the steering wheel, more space is provided for the steering wheel, reducing interference between the steering wheel and the deflector plate. This contributes to improved steering performance and flexibility of the lawnmower, particularly in confined spaces or at large steering angles.The more compact the space between the deflector plate and the vehicle body is in the longitudinal direction, the more advantageous this is for the overall compactness of the vehicle. However, this increases the likelihood of interference between the deflector plate and the vehicle body, which can lead to soil or grass becoming trapped between the deflector plate and the vehicle body, impairing the lawnmower's off-road capability. Conversely, an excessively large gap between the deflector plate and the vehicle body results in excessive vehicle length, negatively impacting the overall maneuverability. The orthogonal projections of the steering wheel and the deflector on the second plane overlap at least partially when the steering angle of the steering wheel is greater than 45°. This ensures the lawnmower's compactness in the longitudinal direction and prevents grass entanglement between the steering wheels and the main body of the lawnmower.

[0008] By arranging the casters in the first configuration, where, viewed from the width, the casters and the deflector plate at least partially overlap, the end of the deflector plate facing the vehicle body can extend between the two casters. This means that part of the deflector plate structure can share a portion of the space longitudinally with the casters. Compared to directly positioning the entire deflector plate in front of the casters, this increases the lawnmower's compactness.

[0009] In one possible embodiment, the baffle plate further comprises a reinforcing part; the reinforcement part is located in the lateral direction between the two deflection parts; the reinforcement part is located in the longitudinal direction at the end of the baffle plate that is close to the vehicle body.

[0010] By attaching the reinforcement part, the structural strength of the baffle plate can be increased, making it more resistant to external impact forces and improving the durability and reliability of the baffle plate.

[0011] In one possible embodiment, the deflecting part is a groove on the impact plate, with the opening of the groove oriented towards the vehicle body.

[0012] This arrangement allows the reinforcement element to share some of the space with the steering wheel without increasing the lawnmower's overall length. Furthermore, the gap between the deflector plate and the vehicle body can be reduced lengthwise, resulting in a more compact lawnmower and promoting its miniaturization.

[0013] In one possible embodiment, the ratio of the dimension of the reinforcing part in the width direction to the maximum dimension of the baffle plate in the width direction is between 0.8 and 0.95.

[0014] By setting the ratio of the maximum dimension of the reinforcement part in the width direction to the maximum dimension of the baffle plate in the width direction between 0.8 and 0.95, it can be ensured that the deflection part offers sufficient space while maintaining the structural strength of the baffle plate.

[0015] In one possible embodiment, the orthogonal projection of the reinforcement part onto the perpendicular plane, which runs parallel to the longitudinal direction, overlaps at least partially with the orthogonal projection of the guide roller onto the perpendicular plane.

[0016] This arrangement allows the reinforcement part to be extended lengthwise to between the two steering wheels, thereby reducing the gap between the baffle plate and the vehicle body, resulting in a more compact structure of the lawnmower and also enabling optimization of the weight distribution at the front of the lawnmower, which contributes to improving the stability and handling of the lawnmower.

[0017] In one possible embodiment, the baffle plate and the vehicle body are arranged at intervals in the longitudinal direction, with the gap between the baffle plate and the vehicle body being greater than 10 mm.

[0018] By creating a gap between the impact plate and the vehicle body, this gap can act as a buffer zone. If the lawnmower encounters an obstacle, the impact plate can move or deform within a certain range to absorb the impact force, thus reducing direct impacts on the vehicle body and protecting the structural integrity of the lawnmower. If there is no gap between the impact plate and the vehicle body, any direct impact can result in deformation or damage to the vehicle body. A gap allows the impact plate some freedom of movement upon impact, thereby reducing the risk of damage.

[0019] In one possible embodiment, the smallest distance between the deflection part and the rotation center of the steering wheel is greater than the radius of the steering wheel.

[0020] This arrangement prevents the steering wheels from colliding with the impact plate when steering.

[0021] In one possible embodiment, the reinforcement part and the vehicle body are arranged at intervals in the longitudinal direction, wherein the ratio of the gap distance between the reinforcement part and the vehicle body to the radius of the steering wheel is at least 0.15 and at most 0.6.

[0022] This prevents the deflector plate and the steering wheels from interfering with each other when the steering wheels rotate, while simultaneously ensuring the lawnmower's compact length. Furthermore, shortening the lawnmower improves its maneuverability. At the same time, a sufficient gap between the deflector plate and the vehicle body ensures that the lawnmower's performance is not impaired by grass or soil trapped between the vehicle body, wheels, and deflector plate.

[0023] In one possible embodiment, the two ends of the baffle plate are located within the inner contour of the two swivel casters in the lateral direction.

[0024] This arrangement allows more of the deflector plate's structure to share the longitudinal space with the casters, thus increasing the lawnmower's compactness. Simultaneously, the reduced width facilitates operation and storage in tight or confined spaces. Limiting the deflector plate's width reduces material consumption and therefore costs, while maintaining the necessary protective function.

[0025] In one possible embodiment, the maximum steering angle of the swivel caster is between 90° and 150°; where the orthogonal projections of the steering wheel and the deflection part overlap at least partially on the second plane if the steering angle of the steering wheel is greater than 20°.

[0026] By setting the maximum steering angle of the casters to a range between 90° and 150°, the lawnmower's steering performance can be improved, allowing it to operate more flexibly to adapt to different working environments. If the steering angle of the caster is greater than 20°, the orthogonal projections of the caster and the deflector plate on the second plane overlap, at least partially. This can cause the end of the deflector plate to be positioned closer to the casters, thereby reducing the likelihood of interference between the main body of the lawnmower and the deflector plate while maintaining the lawnmower's compactness.

[0027] In one possible embodiment, the vehicle body comprises a first part and a second part; wherein the first part is located in the lateral direction between the two steering wheels, wherein the first part is arranged opposite the inside of the steering wheels; wherein the inside of the steering wheel is located on the side which is closer to the central axis surface of the vehicle body in the lateral direction; wherein the second part is located in the longitudinal direction on the side of the steering wheel which is close to the rear end of the vehicle body, wherein the second part is arranged opposite the side of the steering wheel which is close to the rear end of the vehicle body.

[0028] This arrangement allows the vehicle body to form a semi-enclosing structure on the inside of the casters in the width direction and on the side of the rear end near the vehicle body in the longitudinal direction of the casters, thus providing better protection for the casters.

[0029] In one possible embodiment, it also includes a steering motor; the steering motor is located in the upper part of the steering wheel in the vertical direction of the lawnmower.

[0030] By positioning the steering motor above the casters, vertical space is used more efficiently, saving horizontal space on the lawnmower body and resulting in a more compact overall design. The elevated position of the casters reduces contact between the steering motor and the ground, minimizing the risk of damage from soil, grass clippings, and moisture, thus increasing the motor's durability and reliability. This arrangement allows for a direct connection between the steering motor and the casters, reducing the need for additional drive components such as shafts and gears, simplifying the structure, and ultimately lowering costs. Positioning the steering motor higher also optimizes the lawnmower's center of gravity and enhances its stability during operation, especially on uneven terrain.

[0031] The second aspect of the embodiment of the present application provides a lawnmower comprising a drive device; a vehicle body connected to the drive device; two caster wheels arranged at the front of the vehicle body, the two caster wheels being arranged opposite each other along the width of the lawnmower on the two sides of the vehicle body; a deflector plate attached to the front end of the vehicle body, the two ends of the deflector plate being positioned within the outer contour of the two caster wheels from the perspective of the length of the lawnmower; the deflector plate comprising a first protective part and a second protective part, the first protective part being arranged closer to the vehicle body with respect to the second protective part; and at least a part of the structure of the second protective part being arranged lengthwise corresponding to the caster wheel.wherein a perpendicular plane parallel to the longitudinal direction is defined as the first plane, wherein the first protective part comprises an impact state and a non-impact state, wherein the first protective part in at least one of the states, either in the impact state or in the non-impact state, has an orthogonal projection of the first protective part onto the first plane which overlaps at least partially with the orthogonal projection of the guide roller on the first plane.

[0032] The lawnmower provided according to the embodiment of the present application features a deflector plate attached to the front end of the mower body, positioned within the outer contour of the two steering wheels. This allows the deflector plate to be increased without increasing the width of the lawnmower, thus facilitating miniaturization. Furthermore, it reduces the risk of impacts in narrow passages or near obstacles, thereby increasing operational safety. By arranging part of the second protective element on the side of the steering wheel furthest from the rear of the mower body, the steering wheel can be protected to prevent impacts during operation.

[0033] Since the first protective part has an orthogonal projection onto the first plane, which overlaps at least partially with the orthogonal projection of the caster onto the first plane, the first protective part can share some of the space in the longitudinal direction with the casters, thereby reducing the gap between the impact plate and the vehicle body, resulting in a more compact overall structure of the lawnmower and facilitating the development of smaller lawnmowers.

[0034] In one possible embodiment, the dimension of the first protective part in the longitudinal direction is greater than the dimension of the second protective part in the longitudinal direction, wherein deflection parts are formed at both ends of the second protective part, the deflection parts being located on one side of the first protective part.

[0035] This arrangement increases the structural strength of the deflector plate and also positions a greater proportion of its weight between the two swivel casters. This optimizes the weight distribution at the front of the lawnmower, improving its stability and handling.

[0036] In one possible embodiment, the maximum steering angle of the swivel caster is between 90° and 150°.

[0037] This arrangement improves the steering performance of the lawnmower, allowing it to be moved more flexibly to adapt to different working environments.

[0038] In one possible embodiment, the vehicle body comprises a first part and a second part; wherein the first part is located in the lateral direction between the two steering wheels, wherein the first part is arranged opposite the inside of the steering wheels; wherein the inside of the steering wheel is located on the side which is closer to the central axis surface of the vehicle body in the lateral direction; wherein the second part is located in the longitudinal direction on the side of the steering wheel that is near the rear end of the vehicle body, wherein the second part is arranged opposite the side of the steering wheel that is near the rear end of the vehicle body.

[0039] This arrangement allows the vehicle body to form a semi-enclosing structure on the inside of the casters in the width direction and on the side of the rear end near the vehicle body in the longitudinal direction of the casters, thus providing better protection for the casters.

[0040] In one possible embodiment, the two ends of the second protective part are located within the outer contour of the two swivel casters in the lateral direction.

[0041] This arrangement prevents the placement of the second protective part from increasing the width of the lawnmower, which is beneficial for miniaturizing the lawnmower.

[0042] In one possible embodiment, a perpendicular plane is defined as the second plane, running parallel to the width direction; the deflector plate comprises an impact state and a non-impact state, wherein the first protective part is in at least one of the states, either the impact state or the non-impact state, the two ends of the first protective part being located within the inner contour of the two caster wheels in the orthogonal projection of the lawnmower onto the second plane, while the two ends of the second protective part being located outside the inner contour of the two caster wheels. When the deflector plate encounters an obstacle, it moves relative to the main body of the lawnmower toward the main body of the lawnmower and triggers the collision sensor. At this point, the deflector plate is in the impact state.Before the impact plate triggers the collision sensor, the impact plate is also in a non-impact state. Therefore, in the impact state, the impact plate moves toward the main body of the lawnmower, so that the projection of the first protective element onto the second plane at least partially overlaps the projection of the caster wheel on that plane. Optionally, the projection of the first protective element onto the second plane and the projection of the caster wheel on the same plane overlap at least partially when the impact plate is in a non-impact state. Optionally, the projection of the first protective element onto the second plane and the projection of the caster wheel on the same plane do not overlap when the impact plate is in a non-impact state; in the impact state, the two projections overlap on that plane.This allows the space between the casters to be used to set up the impact gap of the baffle plate or to attach the baffle plate, thus making the overall length of the vehicle body more compact.

[0043] This arrangement allows the deflector plate to be reduced in width, thus giving the lawnmower a degree of maneuverability when steering. This means that turning in a smaller space is possible. It also allows the outer casters to be protected when steering the lawnmower. For example, when turning left, the right caster is further forward than the left caster, so the second guard can protect the right caster.

[0044] In one possible embodiment, the first protective part and the vehicle body are arranged at intervals in the longitudinal direction, wherein the ratio of the gap distance between the first protective part and the vehicle body is greater than 10 mm.

[0045] In one possible embodiment, the smallest distance between the first protective part and the center of rotation of the steering wheel is greater than the radius of the steering wheel.

[0046] By setting the minimum distance from the first protective part to the center of rotation of the caster to a value greater than the radius of the caster, an impact between the caster and the first protective part during rotation can be prevented, thereby improving the mobility of the caster.

[0047] In one possible embodiment, the first protective part and the vehicle body are arranged at intervals in the longitudinal direction, wherein the ratio of the gap distance between the first protective part and the vehicle body to the radius of the steering wheel is at least 0.15 and at most 0.6.

[0048] In one possible embodiment, it also includes a steering motor; the steering motor is located in the upper part of the steering wheel in the vertical direction of the lawnmower.

[0049] By positioning the steering motor above the casters, vertical space is used more efficiently, saving horizontal space on the lawnmower body and resulting in a more compact overall design. The elevated position of the casters reduces contact between the steering motor and the ground, minimizing the risk of damage from soil, grass clippings, and moisture, thus increasing the motor's durability and reliability. This arrangement allows for a direct connection between the steering motor and the casters, reducing the need for additional drive components such as shafts and gears, simplifying the structure, and ultimately lowering costs. Positioning the steering motor higher also optimizes the lawnmower's center of gravity and enhances its stability during operation, especially on uneven terrain.

[0050] In one possible embodiment, the ratio of the dimension of the first protective part in the width direction to the dimension of the second protective part in the width direction is between 0.8 and 0.95.

[0051] By setting the ratio of the dimension of the first protective part in the width direction and the maximum dimension of the second protective part in the width direction between 0.8 and 0.95, it can be ensured that sufficient space is provided for the swivel caster while maintaining the structural strength of the impact plate. Illustration of the attached figures

[0052] In order to explain the embodiments of the present application or the technical solutions in the prior art more clearly, a brief introduction to the drawings used in the embodiments or the prior art is given below.

[0053] Naturally, the drawings shown in the following description are only some examples of the present application. A person skilled in the art can create further drawings based on these drawings without any creative effort. Fig. 1 shows a schematic top view of the frame structure of a lawnmower provided according to the embodiment of the present application; Fig. 2 shows a schematic top view of the frame structure of a lawnmower provided according to the embodiment of the present application; Fig. 3 shows a schematic top view of the frame structure of another lawnmower provided according to the embodiment of the present application; Fig. 4 shows a schematic top view of the frame structure of another lawnmower provided according to the embodiment of the present application; Fig. 5 shows a schematic top view of the frame structure of another lawnmower provided according to the embodiment of the present application; Fig. Figure 6 shows a schematic representation of the lawnmower's steering mechanism. Fig. 5. Fig. Figure 7 shows a schematic top view of the frame structure of another lawnmower provided according to the embodiment of the present application; Fig. Figure 8 shows a schematic top view of the frame structure of another lawnmower provided according to the embodiment of the present application; Fig. Figure 9 shows a schematic top view of the frame structure of another lawnmower provided according to the embodiment of the present application.

[0054] Illustration description of the attached figures: 100 lawnmowers; 10 vehicle bodies; 11 Front end of the vehicle body; 12 Part One; 13 Part Two; 20 Baffle plates; 21 Spare part; 22 Reinforcement part; 23 First protective part; 24 Second protective part; 30 swivel caster; 40 Drive roller; 50 Steering motor; 60 Drive device. Specific embodiments

[0055] To clarify the purpose, technical solution, and advantages of the embodiments of this utility model, the technical solution in these embodiments is described clearly and completely below with reference to the drawings in those embodiments. Obviously, the described embodiments represent a subset of the embodiments of this utility model and not all of them.

[0056] Based on the embodiments described in the present utility model, all other embodiments that can be achieved by a person skilled in the art without creative work fall within the scope of protection of the present utility model.

[0057] Lawn mowers are becoming increasingly popular because they can replace manual lawn care in defined areas by mowing and cutting.

[0058] In lawnmowers of this type, swivel casters are typically fitted to the front of the mower to improve steering performance. To prevent the casters from colliding with other objects while in motion, protective plates are usually mounted at the front of the mower.

[0059] However, the application of impact protection plates to lawnmowers using related technology leads to a significant lengthening of the vehicle body, which counteracts the miniaturization of lawnmowers.

[0060] To solve the aforementioned technical problems, the embodiment of the present application provides a lawnmower wherein the lawnmower has a compact design and flexible steering.

[0061] The lawnmower shown in the attached drawings, which is provided in the embodiment of the present application, will be explained in detail below.

[0062] Fig. Figure 1 shows a schematic top view of the frame structure of a lawnmower provided according to the embodiment of the present application. Fig. Figure 2 shows a schematic top view of the frame structure of a lawnmower provided according to the embodiment of the present application.

[0063] It should be noted that in the embodiment of the present application, for the sake of clarity, the width direction of the lawnmower is defined as the y-direction and the length direction of the lawnmower as the x-direction.

[0064] The embodiment of the present application provides a lawnmower 100, as shown in Fig. 1. The lawnmower 100 can also comprise a drive device 60, a vehicle body 10, two swivel casters 30, and a deflector plate 20. The vehicle body 10 is connected to the drive device 60. Two swivel casters 30 are arranged at the front of the vehicle body 10, and the two swivel casters 30 are arranged opposite each other along the lateral direction (y-direction) of the lawnmower 100 on both sides of the vehicle body 10.

[0065] For example, the lawnmower 100 can also include drive rollers 40, wherein the drive device 60 can drive the lawnmower 100 via drive rollers 40. The drive roller 40 can be the steering roller 30 of the lawnmower 100 or the rear roller of the lawnmower 100.

[0066] Of course, in some other embodiments, both the steering wheels and the rear wheel of the lawnmower are drive wheels. In the embodiment of the present application, the position of the drive wheel is not further restricted.

[0067] As in Fig. As shown in Figure 1, the deflector plate 20 can be attached to the front end 11 of the vehicle body. Viewed from the longitudinal direction (x-direction) of the lawnmower 100, the two ends of the deflector plate 20 are located within the outer contours of the two swivel casters 30.

[0068] In the lateral direction (y-direction), deflection parts 21 are provided at both ends of the impact plate 20. In the longitudinal direction (x-direction), the deflection part 21 is located at the end of the impact plate 20 that is closest to the vehicle body 10, whereby a clearance is formed between the deflection part 21 and the steering casters 30, which allows the steering casters 30 to rotate.

[0069] It should be noted that there is a gap between the impact plate 20 and the vehicle body 10, so that when the impact plate 20 collides with an obstacle, a certain amount of damping occurs, allowing other components on the vehicle body 10 to detect the type of obstacle. Therefore, the end of the impact plate 20 located near the vehicle body 10 is the end that is closest to the rear of the vehicle body 10 in the x-direction. Alternatively, the impact plate 20 can be considered to be located at the end opposite the inside of the vehicle body 10 in the x-direction. In this context, the rear of the vehicle body is the end opposite the front of the vehicle body 10.

[0070] In this process, a perpendicular plane parallel to the longitudinal direction is defined as the first plane, and a perpendicular plane parallel to the latitude direction is defined as the second plane; the perpendicular planes are perpendicular to the ground.

[0071] For example, the caster 30 can have a first state and a second state. When the caster 30 is in the first state, its projection onto the floor extends along its longitudinal direction (x-direction). The caster 30 and the deflection part 21 overlap at least partially in the orthogonal projection onto the first plane. This means that when the caster 30 is in the first state, it does not perform any steering movement.

[0072] If the swivel caster 30 is in the second state (see Fig. 2) When the steering wheel 30 is in position greater than 45°, it rotates such that its projection onto the ground deviates from the longitudinal direction (x-direction). The orthogonal projections of the steering wheel 30 and the deflection part 21 on the second plane overlap at least partially if the steering angle of the steering wheel 30 is greater than 45°. This means that in the second state, the steering wheel 30 begins to rotate, and a specific positional relationship exists between the deflection part 21 and the steering wheel 30. Specifically, when the rotation angle of the steering wheel 30 is greater than 45°, its orthogonal projection onto the second plane partially overlaps with the deflection part 21, so that part of the structure of the steering wheel 30 is located in the space covered by the deflection part 21 in the lateral direction (y-direction).

[0073] Here, "whereby the orthogonal projections of the caster 30 and the deflector 21 overlap at least partially on the second plane when the steering angle of the caster 30 is greater than 45°" means that, with a steering angle of more than 45°, part of the caster's structure is located within the space shielded by the deflector 21 to prevent an impact between the deflector plate and the caster. Conversely, if the steering angle is within 45°, the caster lies outside the deflector plate, and no impact with the deflector plate occurs.

[0074] Naturally, the orthogonal projections of the steering wheel 30 and the deflection part 21 overlap at least partially in other embodiments when the steering angle of the steering wheel 30 is greater than 20°. Furthermore, the orthogonal projections of the steering wheel 30 and the deflection part 21 overlap at least partially in the second plane when the steering angle of the steering wheel 30 is greater than 45°.

[0075] For example, at a rotation angle of the steering wheel 30 of 20°, 25°, 35°, 40°, 45°, 50°, 55°, 60°, 65°, 70°, 75°, 80°, 85°, or 90°, at least a portion of the structure of the steering wheel 30 is located in the space covered in the lateral direction (y-direction) by the deflection part 21. In the embodiment of the present application, the minimum rotation angle at which the orthogonal projections of the steering wheel 30 and the deflection part 21 overlap at least partially on the second plane is not restricted. It is sufficient that the orthogonal projections of the steering wheel 30 and the deflection part 21 overlap at least partially on the second plane as soon as the rotation angle is greater than 45°.

[0076] The lawnmower 100 according to the embodiment of the present application provides for a deflector plate 20 to be attached to the front end 11 of the vehicle body of the lawnmower 100, the deflector plate 20 being positioned within the outer contour of the two steering wheels 30. This allows the deflector plate 20 to be increased without increasing the width of the lawnmower 100, thus facilitating its miniaturization. Furthermore, the risk of collisions in narrow passages or near obstacles is reduced, thereby increasing operational safety.

[0077] By attaching a deflector 21 to the side of the deflector plate 20 that is close to the vehicle body 10, more space can be provided for the steering wheel 30, thereby reducing the interference between the steering wheel 30 and the deflector plate 20, which contributes to improving the steering performance and flexibility of the lawnmower 100, especially in confined spaces or at large steering angles.

[0078] It should be noted that, to ensure the structural strength of the impact plate 20, the impact plate 20 must be manufactured with a specific thickness, and a certain distance must be maintained between the impact plate 20 and the vehicle body 10. If the impact plate 20 is positioned completely outside the steering wheel 30, the distance between the impact plate 20 and the steering wheel 30 must be correspondingly greater. This prevents the impact plate 20 from coming into contact with the steering wheel 30 in the event of an impact with an obstacle due to deformation or similar problems. Since the steering wheel 30 rotates, this would cause friction between the steering wheel 30 and the impact plate 20, which could impair the proper operation of the steering wheel 30 and potentially damage the impact plate 20.

[0079] By arranging the casters 30 in the first state, where, viewed from the lateral direction, the casters 30 and the deflector 21 at least partially overlap, the end of the deflector 21 facing the vehicle body 10 can extend between the two casters 30. This means that part of the structure of the deflector plate 20 can share a portion of the space in the longitudinal direction with the casters 30. This ensures that the deflector plate 20 has a certain degree of extension. Compared to directly arranging the entire deflector plate 20 in front of the space in front of the casters 30, this increases the compactness of the lawnmower 100.

[0080] As in Fig. 1 are located at both ends of the baffle plate 20 in the width direction (y-direction) within the inner contour of the two swivel casters 30.

[0081] For example, when the steering wheel 30 is in the first state, there may be a certain gap at both ends of the baffle plate 20 to the inside of the steering wheel 30. The deflector 21 is located on the side of the baffle plate 20 facing the vehicle body 10. Furthermore, part of the structure of the baffle plate 20 is located outside the steering wheel 30 in the longitudinal direction of the vehicle body 10. If the deflector 21 is projected onto the first plane in the lateral direction (y-direction), part of the projection of the deflector 21 may lie on the steering wheel 30. As in Fig. 1 the radius is the swivel caster 30 in Fig. 1 is represented by the dashed circle. This prevents the steering roller 30 from colliding with the impact plate 20 during rotation.

[0082] It should be noted that in the embodiment of the present application, the size of the gap b between the end section of the baffle plate 20 and the steering roller 30 is not specified; for example, it can be 5 mm, 10 mm, or other dimensions. The exact size can be calculated according to the outer diameter of the steering roller 30. No further restrictions are imposed in the embodiment of the present application.

[0083] It should be noted that in the embodiment of the present application, the “alignment” is to be understood in a broad sense and is not limited to a directly opposite arrangement.

[0084] By attaching the two ends of the deflector plate 20 to the inside of the inner contour of the caster 30, the deflector plate 20 can be positioned closer to the vehicle body 10. Since the two ends of the deflector plate 20 are attached to the inside of the caster 30, there is no need to consider impacts between the structure of the deflector plate 20 located outside the caster 30 and the caster 30. This allows a greater number of deflector plate 20 structures to share the space in the longitudinal direction with the caster 30, increasing the compactness of the lawnmower 100 and facilitating its miniaturization. Simultaneously, the reduced space requirement in the lateral direction simplifies operation and storage in confined spaces or limited areas.By limiting the width of the impact protection plate, material consumption can be reduced and thus costs lowered, while maintaining the required protective function.

[0085] With further reference to Fig. 1. The impact plate 20 can also include a reinforcing element 22. The reinforcing element 22 is located in the width direction between the two deflecting elements 21. In the length direction (x-direction), the reinforcing element 22 is located on the side of the impact plate 20 that is closest to the vehicle body 10. By attaching the reinforcing element 22, the structural strength of the impact plate 20 can be increased, thereby improving its resistance to external impact forces and enhancing its durability and reliability.

[0086] For example, the diverting part 21 can be a groove on the impact plate 20, with the opening of the groove being oriented towards the vehicle body 10.

[0087] This arrangement allows the reinforcement part 22 to share a portion of the space with the steering wheel 30 in the longitudinal direction without increasing the length of the lawnmower 100. Furthermore, the gap between the deflector plate 20 and the vehicle body 10 can be reduced in the longitudinal direction, making the lawnmower 100 more compact and promoting its miniaturization.

[0088] It should be noted that, according to the embodiment of the present application, the groove can be a rectangular groove or an arcuate groove (as in Fig. 3) or can be designed as a groove with a different shape. In the embodiment of the present application, the shape of the groove is not further restricted.

[0089] In one possible embodiment, the ratio of the dimension a1 of the reinforcement part 22 in the width direction (y-direction) to the maximum dimension a2 of the baffle plate 20 in the width direction (y-direction) is between 0.8 and 0.95.

[0090] For example, the ratio of the dimension of the reinforcing part 22 in the width direction (y-direction) to the maximum dimension of the baffle plate 20 in the width direction (y-direction) can be 0.8, 0.82, 0.84, 0.86, 0.88, 0.89, 0.91, 0.92, 0.95, etc. In the embodiment of the present application, the ratio of the dimension of the reinforcing part 22 in the width direction (y-direction) to the maximum dimension of the baffle plate 20 in the width direction (y-direction) is not further restricted.

[0091] By setting the ratio of the dimension of the reinforcement part 22 in the width direction (y-direction) to the maximum dimension of the baffle plate 20 in the width direction (y-direction) between 0.8 and 0.95, it can be ensured that the deflection part 21 offers sufficient space while maintaining the structural strength of the baffle plate 20.

[0092] In one possible embodiment, the orthogonal projection of the reinforcement part 22 on the first plane overlaps, at least partially, with the orthogonal projection of the steering wheel 30 on the first plane.

[0093] This arrangement allows the reinforcement part 22 to extend in the longitudinal direction (x-direction) to between the two steering wheels 30, thereby reducing the gap between the baffle plate 20 and the vehicle body 10, resulting in a more compact structure of the lawn mower 100 and also enabling optimization of the weight distribution at the front end of the lawn mower 100, which contributes to improving the stability and handling of the lawn mower 100.

[0094] In one possible embodiment, the baffle plate 20 and the vehicle body 10 are arranged at intervals in the longitudinal direction (x-direction), wherein the gap distance L between the baffle plate 20 and the vehicle body 10 is greater than 10 mm.

[0095] For example, the gap between the side of the reinforcement part 22 facing the vehicle body 10 and the vehicle body 10 is greater than 10 mm.

[0096] For example, the gap L between the impact plate 20 and the vehicle body 10 can be 11 mm, 12 mm, 13 mm, 15 mm, 20 mm, or similar. In the embodiment of the present application, the gap between the impact plate 20 and the vehicle body 10 is not further restricted.

[0097] By creating a gap between the impact plate 20 and the vehicle body 10, this gap can act as a buffer zone. When the lawnmower 100 encounters an obstacle, the impact plate 20 can move or deform within a certain range to absorb the impact force, thereby reducing direct impacts on the vehicle body 10 and protecting the structural integrity of the lawnmower 100. If there is no gap between the impact plate 20 and the vehicle body 10, any direct impact can lead to deformation or damage to the vehicle body 10. A gap allows the impact plate 20 a certain degree of freedom of movement upon impact, thus reducing the risk of damage.

[0098] For example, a detection component can be attached to the vehicle body 10. If the deflector plate 20 comes into contact with an obstacle, the detection component on the vehicle body 10 can recognize the type of obstacle and then adjust the working route or the working mode of the lawnmower 100 according to the obstacle type.

[0099] In one possible embodiment, the smallest distance between the deflecting element 21 and the center of rotation of the steering wheel 30 is greater than the radius of the steering wheel 30. This arrangement prevents the steering wheels 30 from colliding with the deflector plate 20 during steering.

[0100] In one possible embodiment, the reinforcement part 22 and the vehicle body 10 are arranged at intervals in the longitudinal direction, wherein the ratio of the gap distance between the reinforcement part 22 and the vehicle body 10 to the radius r of the steering wheel 30 is at least 0.15 and at most 0.6.

[0101] For example, the ratio of the gap L between the reinforcement part 22 and the vehicle body 10 to the radius r of the steering caster 30 can be values ​​such as 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, etc. In the embodiment of the present application, the ratio of the gap L between the reinforcement part 22 and the vehicle body 10 to the radius r of the steering caster 30 is not further restricted.

[0102] It should be noted that the specific dimensions of the diameter of the steering wheel 30 in the embodiment of the present application are not defined, but are exemplary. In one possible embodiment, the diameter of the steering wheel is in the range of 100 mm to 300 mm; for example, the diameter of the steering wheel is 100 mm, 110 mm, 115 mm, 120 mm, 125 mm, 130 mm, 135 mm, 140 mm, 145 mm, 150 mm, 155 mm, 160 mm, 165 mm, 170 mm, 180 mm, 190 mm, 200 mm, 210 mm, 220 mm, 230 mm, 240 mm, 250 mm, 260 mm, 270 mm, 280 mm, 290 mm, 300 mm, etc. This can be determined specifically using the model of the lawnmower 100. The embodiment of the present application is not further restricted.

[0103] In one possible embodiment, the maximum steering angle of the steering wheel 30 is between 90° and 150°.

[0104] It should be noted that the steering angle of the caster 30 denotes the angle by which the caster 30 rotates from the first state to the second state. For example, the maximum steering angle of the caster 30 can be 90°, 100°, 110°, 120°, 130°, 140°, 150°, or other values. In the embodiment of the present application, the specific maximum steering angle of the caster 30 is not further limited.

[0105] This arrangement improves the steering performance of the lawnmower 100, allowing the lawnmower 100 to be moved more flexibly to adapt to different working environments.

[0106] In one possible embodiment as in Fig. 4. The vehicle body 10 comprises a first part 12 and a second part 13. The first part 12 is located in the lateral direction (y-direction) between the two steering casters 30, with the first part 12 being positioned opposite the inner side of the steering casters 30, the inner side of the steering caster 30 being on the side that is closer to the central axis surface of the vehicle body in the lateral direction. The second part 13 is located in the longitudinal direction (x-direction) on the side of the steering caster 30 that is near the rear end of the vehicle body 10, with the second part 13 being positioned opposite the side of the steering caster 30 that is near the rear end of the vehicle body 10.

[0107] This arrangement allows the vehicle body 10 to form a semi-enclosing structure on the inside of the caster wheels 30 in the width direction (y-direction) and on the side of the rear end near the vehicle body 10 in the length direction (x-direction) of the caster wheels 30, thus providing better protection for the caster wheels 30.

[0108] In one possible embodiment, the lawnmower 100 can further comprise a steering motor 50. The steering motor 50 is located in the upper space of the steering wheel 30 in the vertical direction of the lawnmower 100. Of course, in other embodiments, the steering motor 50 can also be arranged in other positions, for example, in the lateral space of the steering wheel 30. In the embodiment of the present application, no further restrictions are placed on the exact position of the steering motor 50.

[0109] By positioning the steering motor 50 above the steering wheels 30, vertical space can be used effectively, saving horizontal space on the lawnmower 100 and resulting in a more compact overall design. The elevated position of the steering wheels 30 reduces contact between the steering motor 50 and the ground, thus minimizing the risk of damage from soil, grass clippings, and moisture, thereby increasing the durability and reliability of the steering motor 50. This arrangement allows for a direct connection between the steering motor 50 and the steering wheels 30, reducing the need for additional drive components such as shafts and gears, simplifying the structure, and ultimately lowering costs. Positioning the steering motor 50 higher also optimizes the lawnmower 100's center of gravity and enhances its stability during operation, particularly on uneven terrain.

[0110] In the exemplary embodiments of the Fig. 1, Fig. 2, Fig. 3 to Fig. Figure 4 shows that the deflector plate 20 is arranged within the outer contour of the two swivel casters 30, more precisely within the inner contour of the two swivel casters 30. Of course, the deflector plate 20 can also be arranged in other ways in other embodiments.

[0111] As in Fig. Figure 5 of the embodiment of the present application provides a lawnmower 100, wherein the lawnmower 100 may further comprise a drive device 60, a vehicle body 10, two swivel casters 30 and a deflector plate 20. The vehicle body 10 is connected to the drive device 60. Two swivel casters 30 are arranged on the front part of the vehicle body 10, and the two swivel casters 30 are arranged opposite each other along the lateral direction (y-direction) of the lawnmower 100 on both sides of the vehicle body 10.

[0112] For example, the lawnmower 100 can also include drive rollers 40, wherein the drive device 60 can drive the lawnmower 100 via drive rollers 40. The drive roller 40 can be the steering roller 30 of the lawnmower 100 or the rear roller of the lawnmower 100.

[0113] Of course, in some other embodiments, both the steering wheels and the rear wheel of the lawnmower are drive wheels. In the embodiment of the present application, the position of the drive wheel is not further restricted.

[0114] As in Fig. 5. The impact plate 20 can be attached to the front end 11 of the vehicle body, with both ends of the impact plate 20 positioned within the outer contour of the two caster wheels 30 from the perspective of the longitudinal direction (x-direction) of the lawnmower 100. The impact plate 20 can comprise a first protective part 23 and a second protective part 24, with the first protective part 23 being located closer to the vehicle body 10 relative to the second protective part 24. When the impact plate encounters an obstacle, it moves relative to the main body of the lawnmower in the direction of the main body and triggers the collision sensor. At this point, the impact plate is in the impact state. If the impact plate does not trigger the collision sensor, it is in the non-impact state.Therefore, in the impact state, the impact plate moves towards the main body of the lawnmower, so that the projection of the first protective element onto the second plane at least partially overlaps the projection of the caster wheel on that plane. Optionally, the projection of the first protective element onto the second plane overlaps at least partially with the projection of the caster wheel on that plane when the impact plate is in a non-impact state. Optionally, the impact plate is in a non-impact state when the projection of the first protective element onto the second plane and the projection of the caster wheel on the same plane do not overlap; in the impact state, the two projections on that plane overlap. This utilizes the space between the caster wheels to create the impact gap of the impact plate or to mount the impact plate, thus making the overall length of the vehicle body more compact.

[0115] In the longitudinal direction, at least a part of the structure of the second protective part is arranged according to the guide roller 30; wherein a perpendicular plane running parallel to the longitudinal direction is defined as the first plane, wherein the first protective part has an orthogonal projection onto the first plane which overlaps at least partially with the orthogonal projection of the guide roller 30 on the first plane.

[0116] At least part of the structure of the second protective part 24 is arranged in the longitudinal direction (x-direction) corresponding to the caster 30. The orthogonal projection of the first protective part 23 on the first plane overlaps at least partially with the orthogonal projection of the caster 30 on the first plane.

[0117] This means that the second protective part 24 of the impact plate 20 extends in the width direction between the outer contour and the inner contour of the swivel caster 30. This provides a certain degree of protection for the swivel caster 30.

[0118] The lawnmower 100 provided according to the embodiment of the present application features a deflector plate 20 attached to the front end 11 of the vehicle body of the lawnmower 100, the deflector plate 20 being positioned within the outer contour of the two steering wheels 30. This allows the deflector plate 20 to be increased without increasing the width (y-direction) of the lawnmower 100, thus facilitating miniaturization of the lawnmower 100. Furthermore, the risk of collisions in narrow passages or near obstacles is reduced, thereby increasing operational safety. By arranging part of the structure of the second protective element 24 on the side of the steering wheel 30 furthest from the rear end of the vehicle body 10, the steering wheel 30 can be protected to prevent collisions during operation.

[0119] By arranging the first protective part 23 to have an orthogonal projection onto the first plane, which overlaps at least partially with the orthogonal projection of the steering wheel 30 on the first plane, the first protective part 23 can share a portion of the space in the longitudinal direction (x-direction) with the steering wheels 30, thereby reducing the gap between the impact plate 20 and the vehicle body 10, resulting in a more compact overall structure of the lawnmower 100 and promoting the miniaturization of the lawnmower 100.

[0120] In one possible embodiment, the two ends of the second protective part 24 are located in the width direction (y-direction) within the outer contour of the two swivel casters 30.

[0121] This arrangement prevents the arrangement of the second protective part 24 from increasing the dimensions of the lawnmower 100 in the width direction (y-direction), which is beneficial to the miniaturization of the lawnmower 100.

[0122] In this case, a perpendicular plane that runs parallel to the width direction (y-direction) is defined as the second plane.

[0123] As in Fig. 5. The two ends of the first protective part 23 can be located within the inner contour of the two steering wheels 30 in the lateral direction (y-direction) of the lawnmower on the second plane. The two ends of the second protective part 24 are located outside the inner contour of the two steering wheels 30 in the lateral direction (y-direction).

[0124] This arrangement allows the dimension of the deflector plate 20 to be reduced in the lateral direction (y-direction), thus giving the lawnmower 100 a certain degree of freedom of movement when steering. This means that turning in a smaller space is possible. When steering the lawnmower 100, it is also possible to protect the outer caster wheels 30. For example, when turning left, the caster wheel 30 on the right side is positioned as shown in Fig. 6 further forward than the swivel caster 30 located on the left side, so that the second protective part 24 can protect the right swivel caster 30.

[0125] Furthermore, with reference to Fig. 5 the length n of the first protective part 23 in the longitudinal direction (x-direction) is greater than the length m of the second protective part 24 in the longitudinal direction (x-direction).

[0126] That is, the thickness n of the first protective part 23 is greater than the thickness m of the second protective part 24. This allows the second protective part 24, located in front of the steering wheel 30, to be made relatively thin compared to the first protective part 23. Provided that the gap between the second protective part 24 and the steering wheel 30 is sufficient, increasing the thickness of the second protective part 24 reduces the gap L between the impact plate 20 and the vehicle body 10. This results in the overall center of gravity of the impact plate 20 being closer to the vehicle body 10, thus making the structure of the lawnmower 100 more compact. Furthermore, the weight distribution at the front of the lawnmower 100 can be optimized, contributing to improved stability and handling of the lawnmower 100.

[0127] In one possible embodiment, the dimension d1 of the first protective part 23 in the width direction (y-direction) and the maximum dimension d2 of the second protective part 24 in the width direction (y-direction) have a ratio between 0.8 and 0.95.

[0128] For example, the ratio of dimension d1 of the first protective part 23 in the width direction (y-direction) to dimension d2 of the second protective part 24 in the width direction (y-direction) can be values ​​such as 0.8, 0.82, 0.84, 0.86, 0.88, 0.89, 0.91, 0.92, 0.95, etc. In the embodiment of the present application, the ratio of dimension d1 of the first protective part 23 to dimension d2 of the second protective part 24 in the width direction (y-direction) is not further restricted.

[0129] By defining the ratio of dimension d1 of the first protective part 23 in the width direction (y-direction) to the maximum dimension d2 of the second protective part 24 in the width direction as a ratio between 0.8 and 0.95, it can be ensured that sufficient space is provided for the swivel caster 30 and at the same time the structural strength of the impact plate 20 is maintained.

[0130] In one possible embodiment, the first protective part 23 and the vehicle body 10 are arranged at intervals in the longitudinal direction (x-direction), wherein the gap distance between the first protective part 23 and the vehicle body 10 is greater than 10 mm.

[0131] For example, the gap L between the first protective part 23 and the vehicle body 10 can be 11 mm, 12 mm, 13 mm, 15 mm, 20 mm, or similar. In the embodiment of the present application, the gap between the first protective part 23 and the vehicle body 10 is not further restricted.

[0132] By creating a gap between the first protective part 23 and the vehicle body 10, this gap can serve as a buffer zone. If the lawnmower 100 encounters an obstacle, the impact plate 20 can move or deform within a certain range to absorb the impact force, thereby reducing direct impacts on the vehicle body 10 and protecting the structural integrity of the lawnmower 100. If there is no gap between the first protective part 23 and the vehicle body 10, any direct impact can lead to deformation or damage to the vehicle body 10. A gap allows the impact plate 20 a certain degree of freedom of movement upon impact, thus reducing the risk of damage.

[0133] For example, a detection component can be attached to the vehicle body 10. If the deflector plate 20 comes into contact with an obstacle, the detection component on the vehicle body 10 can recognize the type of obstacle and then adjust the working route or the working mode of the lawnmower 100 according to the obstacle type.

[0134] Likewise, the second protective part 24 and the steering wheel 30 can be arranged at intervals in the longitudinal direction (x-direction), wherein the gap a between the second protective part 24 and the steering wheel 30 is greater than 5 mm. For example, the gap a between the second protective part 24 and the steering wheel 30 can be 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 15 mm, 20 mm, or similar. In the embodiment of the present application, the gap a between the second protective part 24 and the steering wheel 30 is not further restricted.

[0135] By attaching the second protective part 24 and the steering wheel 30 at intervals along the longitudinal (x-direction), this gap can serve as a buffer zone. If the lawnmower 100 encounters an obstacle, the impact plate 20 can move or deform within a certain range to absorb the impact force, thereby reducing direct impacts on the steering wheel 30 and protecting the structural integrity of the lawnmower 100. If there is no gap between the impact plate 20 and the steering wheel 30, any direct impact can cause the impact plate 20 to rub against the steering wheel 30, resulting in damage to the impact plate 20. A gap allows the impact plate 20 some freedom of movement upon impact, thus reducing the risk of damage.

[0136] In one possible embodiment, the smallest distance between the first protective part 23 and the center of rotation of the steering wheel 30 is greater than the radius r of the steering wheel 30.

[0137] By setting the minimum distance from the first protective part 23 to the center of rotation of the steering wheel 30 to a value that is greater than the radius of the steering wheel 30, an impact between the steering wheel 30 and the first protective part 23 during rotation can be prevented, thereby improving the mobility of the steering wheel 30.

[0138] In one possible embodiment, the first protective part 23 and the vehicle body 10 are arranged at intervals in the longitudinal direction, wherein the ratio of the gap distance between the first protective part 23 and the vehicle body 10 to the radius r of the steering wheel 30 is at least 0.15 and at most 0.6.

[0139] For example, the ratio of the gap L between the first protective part 23 and the vehicle body 10 to the radius r of the steering caster 30 can be values ​​such as 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, etc. In the embodiment of the present application, the ratio of the gap L between the first protective part 23 and the vehicle body 10 to the radius r of the steering caster 30 is not further restricted.

[0140] The specific dimensions of the diameter of the steering wheel 30 in the embodiment of the present application are not defined, but are given as examples. In one possible embodiment, the diameter of the steering wheel is in the range of 100 mm to 300 mm; for example, the diameter of the steering wheel is 100 mm, 110 mm, 115 mm, 120 mm, 125 mm, 130 mm, 135 mm, 140 mm, 145 mm, 150 mm, 155 mm, 160 mm, 165 mm, 170 mm, 180 mm, 190 mm, 200 mm, 210 mm, 220 mm, 230 mm, 240 mm, 250 mm, 260 mm, 270 mm, 280 mm, 290 mm, 300 mm, etc. This can be determined specifically using the model of the lawnmower 100. The embodiment of the present application is not further restricted.

[0141] For example, as in Fig. At both ends of the second protective part 24, deflection parts 21 are formed, with the deflection parts 21 being located on one side of the first protective part 23, wherein the smallest distance between the deflection part 21 and the center of rotation of the steering wheel 30 is greater than the radius r of the steering wheel 30. This arrangement allows the design flexibility of the first protective part 23 to be increased, and the structure of the first protective part 23 can be adapted according to the structure of the deflection part 21 in order to improve the structural strength of the impact plate 20.

[0142] For example, the diverting element 21 can be a groove, the opening of which is oriented towards the vehicle body 10. The groove can have a rectangular or an arcuate groove structure. In the embodiment of the present application, the specific structure of the diverting element 21 is not further restricted.

[0143] In one possible embodiment, the maximum steering angle of the steering wheel 30 is between 90° and 150°.

[0144] It should be noted that the steering angle of the caster 30 denotes the angle by which the caster 30 rotates from the first state to the second state. For example, the maximum steering angle of the caster 30 can be 90°, 100°, 110°, 120°, 130°, 140°, 150°, or other values. In the embodiment of the present application, the specific maximum steering angle of the caster 30 is not further limited.

[0145] This arrangement improves the steering performance of the lawnmower 100, allowing the lawnmower 100 to be moved more flexibly to adapt to different working environments.

[0146] In one possible embodiment as in Fig. 7. The vehicle body 10 can comprise a first part 12 and a second part 13. The first part 12 is located in the lateral direction (y-direction) between the two caster wheels 30, with the first part 12 being positioned opposite the inside of the caster wheels 30. The second part 13 is located in the longitudinal direction (x-direction) on the side of the caster wheel 30 that is closest to the rear end of the vehicle body 10, with the second part 13 being positioned opposite the side of the caster wheel 30 that is closest to the rear end of the vehicle body 10. The rear end of the vehicle body is the end of the vehicle body opposite the front end 11.

[0147] This arrangement allows the vehicle body 10 to form a semi-enclosing structure on the inside of the caster wheels 30 in the width direction (y-direction) and on the side of the rear end near the vehicle body 10 in the length direction (x-direction) of the caster wheels 30, thus providing better protection for the caster wheels 30.

[0148] In one possible embodiment, the lawnmower 100 can further comprise a steering motor 50. The steering motor 50 is located in the upper space of the steering wheel 30 in the vertical direction of the lawnmower 100. Of course, in other embodiments, the steering motor 50 can also be arranged in other positions, for example, in the lateral space of the steering wheel 30. In the embodiment of the present application, no further restrictions are placed on the exact position of the steering motor 50.

[0149] By positioning the steering motor 50 above the steering wheels 30, vertical space can be used effectively, saving horizontal space within the vehicle body 10 of the lawnmower 100 and resulting in a more compact overall design. The elevated position of the steering wheels 30 reduces contact between the steering motor 50 and the ground, thus minimizing the risk of damage to the steering motor 50 from soil, grass clippings, and moisture, thereby increasing the durability and reliability of the steering motor 50. This arrangement allows for a direct connection between the steering motor 50 and the steering wheels 30, reducing the need for additional drive components such as shafts and gears, simplifying the structure, and thus lowering costs. Positioning the steering motor 50 higher also optimizes the center of gravity of the lawnmower 100 and increases its stability during operation, especially on uneven terrain.

[0150] As in Fig. In other embodiments, the baffle plate 20 can of course also be arranged between the inner contours of the two steering casters 30. Viewed from the longitudinal direction (x-direction) of the vehicle body 10, the baffle plate 20 is located between the inner contours of the two steering casters 30. The orthogonal projection of the baffle plate 20 on the second plane overlaps at least partially with the orthogonal projection of the steering caster 30 on the same second plane.

[0151] In this way, part of the structure of the deflector plate 20 can also be extended between the two swivel casters 30, meaning that part of the space in the longitudinal direction is shared with the swivel casters 30. This reduces the gap between the vehicle body 10 and the deflector plate 20, resulting in a more compact structure of the lawnmower 100 and promoting its miniaturization.

[0152] In one possible embodiment, the maximum steering angle of the steering wheel 30 is between 90° and 150°.

[0153] It should be noted that the steering angle of the caster 30 denotes the angle by which the caster 30 rotates from the first state to the second state. For example, the maximum steering angle of the caster 30 can be 90°, 100°, 110°, 120°, 130°, 140°, 150°, or other values. In the embodiment of the present application, the specific maximum steering angle of the caster 30 is not further limited.

[0154] This arrangement improves the steering performance of the lawnmower 100, allowing the lawnmower 100 to be moved more flexibly to adapt to different working environments.

[0155] In one possible embodiment as in Fig.9 The vehicle body 10 can comprise a first part 12 and a second part 13. The first part 12 is located in the lateral direction (y-direction) between the two caster wheels 30, with the first part 12 being positioned opposite the inside of the caster wheels 30. The second part 13 is located in the longitudinal direction (x-direction) on the side of the caster wheel 30 that is closest to the rear end of the vehicle body 10, with the second part 13 being positioned opposite the side of the caster wheel 30 that is closest to the rear end of the vehicle body 10. The rear end of the vehicle body is the end of the vehicle body opposite the front end 11.

[0156] This arrangement allows the vehicle body 10 to form a semi-enclosing structure on the inside of the caster wheels 30 in the width direction (y-direction) and on the side of the rear end near the vehicle body 10 in the length direction (x-direction) of the caster wheels 30, thus providing better protection for the caster wheels 30.

[0157] In one possible embodiment, the lawnmower 100 can further comprise a steering motor 50. The steering motor 50 is located in the upper space of the steering wheel 30 in the vertical direction of the lawnmower 100. Of course, in other embodiments, the steering motor 50 can also be arranged in other positions, for example, in the lateral space of the steering wheel 30. In the embodiment of the present application, no further restrictions are placed on the exact position of the steering motor 50.

[0158] By positioning the steering motor 50 above the steering wheels 30, vertical space can be used effectively, saving horizontal space within the vehicle body 10 of the lawnmower 100 and resulting in a more compact overall design. The elevated position of the steering wheels 30 reduces contact between the steering motor 50 and the ground, thus minimizing the risk of damage to the steering motor 50 from soil, grass clippings, and moisture, thereby increasing the durability and reliability of the steering motor 50. This arrangement allows for a direct connection between the steering motor 50 and the steering wheels 30, reducing the need for additional drive components such as shafts and gears, simplifying the structure, and thus lowering costs. Positioning the steering motor 50 higher also optimizes the center of gravity of the lawnmower 100 and increases its stability during operation, especially on uneven terrain.

[0159] The various embodiments or embodiments in this description are presented progressively. Each embodiment focuses on the differences from the other embodiments. Identical or similar parts between the different embodiments can be related to one another.

[0160] In the description of the application, it is understood that the azimuthal or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "top", "bottom", "front", "back", "left", "right", "vertical", "horizontal", "roof", "bottom", "inside", "outside", etc., are azimuthal or positional relationships based on the attached drawings and serve to simplify the description of the application and are not intended to indicate or suggest that the arrangement or component referred to has a particular orientation and must be built and operated in a particular orientation, and are therefore not to be understood as a limitation of the application.

[0161] Furthermore, the description of the present application should be understood to mean that the terms “comprise” and “include” appearing in the text, as well as all variations thereof, cover non-exclusive inclusion, e.g., a process, method, system, product or equipment that includes a series of steps or units need not be limited to those clearly listed steps or units, but may include other steps or units that are not clearly listed or are inherent in those processes, methods, products or equipment.

[0162] It should be noted that the terms "assemble," "connect," "connect," and "fasten" are to be interpreted broadly unless expressly stated otherwise or limited. They may refer, for example, to a permanent connection, a detachable connection, a one-piece connection, a direct connection, an indirect connection via an intermediate medium, or a connection within two components. The specific meaning of the aforementioned terms in the context of the application is readily apparent to a person skilled in the art. Furthermore, terms such as "first" and "second" are used for descriptive purposes only and should not be interpreted as indicating or implying a relative meaning, or as an implicit indication of the number of technical features referred to.

[0163] Finally, it should be noted that the above-mentioned embodiments serve only to illustrate the technical solution of the present application and do not constitute a limitation; although the present application has been described in detail with reference to the above embodiments, the person skilled in the art should understand that he may further modify the technical solutions described in the above embodiments or replace some or all of the technical features with equivalent ones; however, these modifications or replacements do not cause the essence of the corresponding technical solution to fall outside the scope of the technical solutions of the present application.

Claims

[1] Lawn mower, characterized by that it includes the following: a drive device; a vehicle body connected to the drive device; two swivel casters arranged at the front of the vehicle body, the two swivel casters being arranged opposite each other along the width direction of the lawnmower on both sides of the vehicle body; a deflector plate attached to the front end of the vehicle body, wherein the two ends of the deflector plate are positioned within the outer contour of the two steering wheels from the perspective of the longitudinal direction of the lawnmower; where deflection parts are provided at both ends of the baffle plate in the width direction; wherein the deflecting part is located in the longitudinal direction at the end of the impact plate closest to the vehicle body, wherein a deflecting space is formed between the deflecting part and the steering wheel, which allows the steering wheels to rotate; wherein a perpendicular plane parallel to the longitudinal direction is defined as the first plane, and a perpendicular plane parallel to the lateral direction is defined as the second plane; wherein the caster comprises a first state and a second state, the projection of the caster onto the ground extending along the longitudinal direction when the caster is in the first state, the orthogonal projections of the caster and the evasive part overlapping at least partially on the first plane; wherein the caster rotates such that the projection of the caster onto the ground deviates from the longitudinal direction when the caster is in the second state, the orthogonal projections of the caster and the evasive part overlapping at least partially on the second plane when the steering angle of the caster is greater than 45°. [2] Lawn mower according to claim 1, characterized by, that the baffle plate also includes a reinforcing part; the reinforcement part is located in the lateral direction between the two deflection parts; the reinforcing part is located in the longitudinal direction on the side of the impact plate facing the vehicle body. [3] Lawn mower according to claim 2, characterized by that the diverting part is a groove on the impact plate, with the opening of the groove being oriented towards the vehicle body. [4] Lawn mower according to claim 3, characterized by , that the ratio of the maximum dimension of the reinforcement part in the width direction to the maximum dimension of the baffle plate in the width direction is between 0.8 and 0.

95. [5] Lawn mower according to any one of claims 2 to 4, characterized bythat the reinforcement part and the vehicle body are arranged at intervals in the longitudinal direction, wherein the ratio of the gap distance between the reinforcement part and the vehicle body to the radius of the steering wheel is at least 0.15 and at most 0.

6. [6] Lawn mower according to any one of claims 1-4, characterized by that the two ends of the baffle plate are located within the inner contour of the two swivel casters in the width direction. [7] Lawn mower according to any one of claims 1-4, characterized by , that the maximum steering angle of the caster is between 90° and 150°; wherein the orthogonal projections of the caster and the deflection part on the second plane overlap at least partially when the steering angle of the caster is greater than 20°. [8] Lawn mower according to any one of claims 1-4, characterized by , that the vehicle body further comprises a first part and a second part; wherein the first part is located in the lateral direction between the two steering wheels, wherein the first part is arranged opposite the inside of the steering wheels, wherein the inside of the steering wheel is located on the side which is closer to the central axis surface of the vehicle body in the lateral direction; wherein the second part is located in the longitudinal direction on the side of the steering wheel that is near the rear end of the vehicle body, wherein the second part is arranged opposite the side of the steering wheel that is near the rear end of the vehicle body. [9] Lawn mower according to any one of claims 1-4, characterized by , that it further comprises a steering motor; wherein the steering motor is located in the upper space of the steering wheel in the vertical direction of the lawnmower. [10] Lawn mower, characterized by that it includes the following: a drive device; a vehicle body connected to the drive device; two swivel casters arranged at the front of the vehicle body, the two swivel casters being arranged opposite each other along the width direction on both sides of the vehicle body; a deflector plate attached to the front end of the vehicle body, wherein the two ends of the deflector plate are positioned within the outer contour of the two steering wheels from the perspective of the longitudinal direction of the lawnmower; wherein the baffle plate comprises a first protective part and a second protective part, wherein the first protective part is arranged closer to the vehicle body in relation to the second protective part; wherein at least part of the structure of the second protective part is arranged in the longitudinal direction according to the steering roller; wherein a perpendicular plane parallel to the longitudinal direction is defined as the first plane, wherein the first protective part comprises an impact state and a non-impact state, wherein the first protective part in at least one of the states, either in the impact state or in the non-impact state, has an orthogonal projection of the first protective part onto the first plane which overlaps at least partially with the orthogonal projection of the guide roller onto the first plane. [11] Lawn mower according to claim 10, characterized by , that the dimension of the first protective part in the longitudinal direction is greater than the dimension of the second protective part in the longitudinal direction, wherein evasive parts are formed at both ends of the second protective part, the evasive parts being located on one side of the first protective part. [12] Lawn mower according to claim 10 or 11, characterized by , that the maximum steering angle of the swivel caster is between 90° and 150°; [13] Lawn mower according to claim 10 or 11, characterized by , that the vehicle body further comprises a first part and a second part; wherein the first part is located in the lateral direction between the two steering wheels, wherein the first part is arranged opposite the inside of the steering wheels, wherein the inside of the steering wheel is located on the side which is closer to the central axis surface of the vehicle body in the lateral direction; wherein the second part is located in the longitudinal direction on the side of the steering wheel that is near the rear end of the vehicle body, wherein the second part is arranged opposite the side of the steering wheel that is near the rear end of the vehicle body. [14] Lawn mower according to claim 10 or 11, characterized by that the two ends of the second protective part are located within the outer contour of the two swivel casters in the lateral direction. [15] Lawn mower according to claim 14, characterized by, that a perpendicular plane is defined as the second plane, which runs parallel to the width direction; wherein the two ends of the first protective part are located in the orthogonal projection of the lawnmower onto the second plane within the inner contour of the two steering wheels, while the two ends of the second protective part are located outside the inner contour of the two steering wheels. [16] Lawn mower according to claim 15, characterized by that the first protective part and the vehicle body are arranged at intervals in the longitudinal direction, wherein the gap between the first protective part and the vehicle body is greater than 10mm. [17] Lawn mower according to claim 16, characterized by , that the smallest distance between the first protective part and the rotation center of the swivel caster is greater than the radius of the swivel caster. [18] Lawn mower according to claim 10 or 11, characterized bythat the first protective part and the vehicle body are arranged at intervals in the longitudinal direction, wherein the ratio of the gap distance between the first protective part and the vehicle body to the radius of the steering wheel is at least 0.15 and at most 0.

6. [19] Lawn mower according to claim 10 or 11, characterized by , that it further comprises a steering motor; wherein the steering motor is located in the upper space of the steering wheel in the vertical direction of the lawnmower. [20] Lawn mower according to claim 10 or 11, characterized by , that the ratio of the dimension of the first protective part in the width direction to the dimension of the second protective part in the width direction is between 0.8 and 0.95.

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