Lawn mower
By incorporating clearance and reinforcement sections into the baffle design of the lawnmower, the problem of increased length after installing anti-collision plates has been solved, achieving miniaturization and steering flexibility of the lawnmower while improving safety and steering performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KUTTING TECHNOLOGY (SUZHOU) CO LTD
- Filing Date
- 2025-04-30
- Publication Date
- 2026-05-08
AI Technical Summary
The addition of crash barriers to existing lawnmowers increases their overall length, hindering miniaturization and limiting steering maneuverability and safety.
The design employs a baffle, which is positioned within the outer contour of the two steering wheels. The baffle also incorporates clearance and reinforcement sections to reduce interference between the steering wheels and the baffle, providing more steering space and enhancing structural compactness and safety.
This achieves a size that does not increase the width of the lawnmower, while reducing the risk of collisions in narrow passages or near obstacles, improving operational safety and steering performance.
Smart Images
Figure CN224205764U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of lawnmower technology, and more particularly to a lawnmower. Background Technology
[0002] Lawn mowers are becoming increasingly popular because they can replace manual labor in trimming and cutting lawns in designated areas.
[0003] In order to improve the steering performance of lawnmowers in related technologies, steering wheels are usually installed at the front of the lawnmower. To prevent the steering wheels from colliding with other objects during driving, a bumper is usually installed at the front of the lawnmower.
[0004] However, the addition of anti-collision plates to lawnmowers in related technologies would significantly increase the length of the vehicle body, which would hinder the miniaturization of lawnmowers. Utility Model Content
[0005] This application provides a lawnmower that is compact in structure and flexible in steering.
[0006] To achieve the above objectives, the embodiments of this application provide the following technical solutions:
[0007] A first aspect of this application provides a lawnmower, comprising: a power unit; a vehicle body connected to the power unit; two steering wheels disposed at the front of the vehicle body, and the two steering wheels being disposed at a distance from each other on both sides of the vehicle body along the width direction of the lawnmower; a baffle disposed at the front end of the vehicle body, wherein, viewed in the length direction of the lawnmower, both ends of the baffle are located within the outer contours of the two steering wheels; wherein, in the width direction, both ends of the baffle are provided with clearance portions; in the length direction, the clearance portions are located at the end of the baffle closer to the vehicle body, and a clearance portion is formed between the clearance portion and the steering wheels to allow the steering wheels to rotate. Define a first plane as a vertical plane parallel to the length direction and a second plane as a vertical plane parallel to the width direction. The steering wheel includes a first state and a second state. When the steering wheel is in the first state, the projection of the steering wheel onto the ground extends along the length direction, and the orthographic projections of the steering wheel and the clearance part on the first plane at least partially overlap. When the steering wheel is in the second state, the steering wheel rotates so that the projection of the steering wheel onto the ground deviates from the length direction. When the steering angle of the steering wheel is greater than 45 degrees, the orthographic projections of the steering wheel and the clearance part on the second plane at least partially coincide.
[0008] The lawnmower provided in this application embodiment, by setting a baffle at the front end of the lawnmower body and placing the baffle within the outer contour of the two steering wheels, can increase the lawnmower's width without increasing the size of the lawnmower, which is beneficial for the miniaturization of the lawnmower. It can also reduce the risk of collisions in narrow passages or near obstacles, improving operational safety. By setting a clearance part on the side of the baffle facing the steering wheels, more space can be provided for the steering wheels, thereby reducing interference between the steering wheels and the baffle. This helps improve the lawnmower's steering performance and flexibility, especially in narrow spaces or when large-angle steering is required. The more compact the space between the baffle and the body in the front-rear direction, the more compact the overall vehicle will be. However, the baffle and body are prone to interference, and mud or grass can easily get stuck between the baffle and the body, which is not conducive to the lawnmower's passability. On the other hand, if the space between the baffle and the body is too loose, the overall length of the vehicle will be too large, which is not conducive to the overall steering flexibility of the vehicle. This design ensures that when the steering wheel's steering angle is greater than 45 degrees, the steering wheel and the clearance part's orthographic projection on the second plane at least partially overlap, guaranteeing the lawnmower's compactness in the length direction and preventing grass from getting stuck between the steering wheel and the lawnmower body.
[0009] By setting the steering wheel in the first state, the steering wheel and the clearance section overlap at least partially when viewed in the width direction. This allows the clearance section to extend from one end toward the vehicle body to between the two steering wheels. In other words, a portion of the baffle structure can share a portion of the space in the length direction with the steering wheel. This improves the compactness of the lawnmower compared to directly setting the entire baffle in the space in front of the steering wheel.
[0010] In one possible implementation, the baffle further includes a reinforcing section; wherein,
[0011] In the width direction, the reinforcing part is located between the two clearance parts;
[0012] In the longitudinal direction, the reinforcement is located on the side of the baffle closest to the vehicle body.
[0013] By adding reinforcements, the structural strength of the baffle can be increased, making it more resistant to external impacts and improving its durability and reliability.
[0014] In one possible implementation, the clearance portion is a groove on the baffle, the opening of which faces the vehicle body.
[0015] This design allows the reinforcing section to share a portion of the space with the steering wheel in the longitudinal direction without increasing the length of the lawnmower. It also reduces the gap between the baffle and the body in the longitudinal direction, making the lawnmower more compact and facilitating its miniaturization.
[0016] In one possible implementation, the ratio of the dimension of the reinforcement in the width direction to the maximum dimension of the baffle in the width direction is between 0.8 and 0.95.
[0017] By setting the ratio of the dimension of the reinforcing part in the width direction to the maximum dimension of the baffle in the width direction between 0.8 and 0.95, the clearance part can provide sufficient clearance space, and the structural strength of the baffle can also be guaranteed.
[0018] In one possible implementation, the orthographic projection of the reinforcing part onto the vertical plane parallel to the length direction at least partially coincides with the orthographic projection of the steering wheel onto the vertical plane.
[0019] This design allows the reinforcement to extend along the length between the two steering wheels, thereby reducing the gap between the baffle and the vehicle body, making the lawnmower's structure more compact, and optimizing the weight distribution at the front of the lawnmower, which helps improve the lawnmower's stability and maneuverability.
[0020] In one possible implementation, the baffle is spaced apart from the vehicle body along the length direction, and the gap between the baffle and the vehicle body is greater than 10mm.
[0021] By creating a gap between the baffle and the vehicle body, this gap acts as a buffer zone. When the lawnmower encounters an obstacle, the baffle can move or deform within a certain range to absorb the impact force, reducing direct impact on the vehicle body and protecting the structural integrity of the lawnmower. If there is no gap between the baffle and the vehicle body, any direct impact could cause deformation or damage to the vehicle body. The gap allows the baffle some room to move upon impact, thus reducing the risk of damage.
[0022] In one possible implementation, the minimum distance from the clearance part to the center of rotation of the steering wheel is greater than the radius of the steering wheel.
[0023] This design prevents the steering wheels from colliding with the baffle when turning.
[0024] In one possible implementation, the reinforcing part and the vehicle body are spaced apart along the length direction, and the ratio of the gap distance between the reinforcing part and the vehicle body to the radius of the steering wheel is greater than or equal to 0.15 and less than or equal to 0.6.
[0025] This ensures the compactness of the lawnmower along its length, prevents interference between the baffle and steering wheel when the steering wheel rotates, and reduces the length of the lawnmower to improve steering flexibility. At the same time, maintaining the gap between the baffle and the vehicle body prevents the performance of the lawnmower from being affected by weeds or mud getting stuck between the vehicle body, wheels, and baffle.
[0026] In one possible implementation, the two ends of the baffle are located within the inner contours of the two steering wheels in the width direction.
[0027] This design allows more of the baffle structure and steering wheels to share space along the length, thus improving the lawnmower's compactness. Furthermore, with a smaller width footprint, it facilitates operation and storage in narrow areas or limited spaces. Limiting the width of the bumper reduces material usage, thereby lowering costs while maintaining essential protective functions.
[0028] In one possible implementation, the maximum steering angle of the steering wheel is between 90 and 150 degrees;
[0029] When the steering angle of the steering wheel is greater than 20 degrees, the steering wheel and the abutment portion at least partially overlap in the orthographic projection on the second plane.
[0030] By setting the maximum steering angle of the steering wheels between 90 and 150 degrees, the steering performance of the lawnmower can be improved, allowing it to move more flexibly and adapt to different working environments. When the steering angle of the steering wheels is greater than 20 degrees, the projections of the steering wheels and the clearance section onto the second plane at least partially overlap, allowing the end of the baffle to be closer to the steering wheels. This reduces the probability of interference between the lawnmower body and the baffle while maintaining the lawnmower's compactness.
[0031] In one possible implementation, the vehicle body comprises a first part and a second part; wherein,
[0032] In the width direction, the first part is located between the two steering wheels, and the first part is positioned opposite to the inner side of the steering wheel;
[0033] In the length direction, the second part is located on the side of the steering wheel near the rear end of the vehicle body, and the second part is positioned opposite to the side of the steering wheel near the rear end of the vehicle body.
[0034] This design allows the vehicle body to form a semi-enclosed structure on the inside of the steering wheel in the width direction and on the side of the steering wheel near the rear of the vehicle body in the length direction, thus better protecting the steering wheel.
[0035] In one possible implementation, a steering motor is also included; wherein,
[0036] In the vertical direction of the lawnmower, the steering motor is located in the space above the steering wheel.
[0037] By placing the steering motor above the steering wheels, vertical space is effectively utilized, saving horizontal space in the lawnmower body and resulting in a more compact overall design. The higher position of the steering wheels reduces the contact between the steering motor and the ground, lowering the risk of damage from ground elements such as mud, grass clippings, and moisture, thus improving the motor's durability and reliability. This layout allows the steering motor to connect directly to the steering wheels, reducing additional transmission components such as shafts and gears, simplifying the structure, and consequently reducing costs. Placing the steering motor higher helps optimize the lawnmower's center of gravity distribution, enhancing operational stability, especially on uneven terrain.
[0038] A second aspect of this application provides a lawnmower, comprising: a power unit; a vehicle body connected to the power unit; two steering wheels disposed at the front of the vehicle body, and the two steering wheels being disposed at a distance from each other on both sides of the vehicle body along the width direction; a baffle disposed at the front end of the vehicle body, wherein, viewed from the length direction of the lawnmower, the two ends of the baffle are located within the outer contours of the two steering wheels; wherein the baffle includes a first protective part and a second protective part, the first protective part being disposed close to the vehicle body relative to the second protective part; in the length direction, at least a portion of the structure of the second protective part is disposed corresponding to the steering wheels; a vertical plane parallel to the length direction is defined as a first plane, the first protective part including an impact state and a non-impact state, wherein, in at least one of the impact state or the non-impact state, the orthographic projection of the first protective part onto the first plane at least partially overlaps with the orthographic projection of the steering wheels onto the first plane.
[0039] The lawnmower provided in this application embodiment, by setting a baffle at the front end of the lawnmower body and placing the baffle within the outer contour of the two steering wheels, can increase the lawnmower's width without increasing the size of the lawnmower, which is beneficial for the miniaturization of the lawnmower. It also reduces the risk of collisions in narrow passages or near obstacles, improving operational safety. By aligning a portion of the second protective part with the side of the steering wheels away from the rear end of the vehicle body, the steering wheels can be protected, preventing collisions during operation.
[0040] By setting the orthographic projection of the first protective part onto the first plane to at least partially overlap with the orthographic projection of the steering wheel onto the first plane, the first protective part and the steering wheel can share a portion of the space in the longitudinal direction, thereby reducing the gap between the baffle and the vehicle body, making the structure of the entire lawnmower more compact, which is conducive to the miniaturization of the lawnmower.
[0041] In one possible implementation, the first protective part is larger in length than the second protective part, and the two ends of the second protective part form clearance parts, which are located on one side of the first protective part.
[0042] This design increases the structural strength of the baffle and distributes more of its weight between the two steering wheels, thus optimizing the weight distribution at the front of the lawnmower and improving its stability and maneuverability.
[0043] In one possible implementation, the maximum steering angle of the steering wheel is between 90 and 150 degrees.
[0044] This configuration improves the lawnmower's steering performance, allowing it to move more flexibly and adapt to different working environments.
[0045] In one possible implementation, the vehicle body comprises a first part and a second part; wherein,
[0046] In the width direction, the first part is located between the two steering wheels, and the first part is positioned opposite to the inner side of the steering wheel;
[0047] In the length direction, the second part is located on the side of the steering wheel near the rear end of the vehicle body, and the second part is positioned opposite to the side of the steering wheel near the rear end of the vehicle body.
[0048] This design allows the vehicle body to form a semi-enclosed structure on the inside of the steering wheel in the width direction and on the side of the steering wheel near the rear of the vehicle body in the length direction, thus better protecting the steering wheel.
[0049] In one possible implementation, the two ends of the second protective part are located within the outer contours of the two steering wheels in the width direction.
[0050] This design ensures that the second protective section does not increase the width of the lawnmower, which is beneficial for the miniaturization of the lawnmower.
[0051] In one possible implementation, a vertical plane parallel to the width direction is defined as the second plane; the baffle includes an impact state and a non-impact state. In at least one of the impact or non-impact states, the first protective part, on the orthographic projection of the lawnmower onto the second plane, has its two ends located within the inner contours of the two steering wheels, and its two ends located outside the inner contours of the two steering wheels. When the baffle impacts an obstacle, it moves relative to the lawnmower body towards the lawnmower body and triggers a collision sensor, at which point the baffle is in the impact state. When the collision sensor is not triggered, the baffle is in the impact state. Thus, when the baffle is in the impact state, it moves towards the lawnmower body, so that the first protective part at least partially overlaps with the projection of the steering wheels onto the second plane. Optionally, when the baffle is in the non-impact state, the first protective part at least partially overlaps with the projection of the steering wheels onto the second plane. Optionally, when the baffle is in a non-impact state, the projection of the first protective part onto the second plane does not overlap with the projection of the steering wheel onto that plane; when the baffle is in an impact state, their projections overlap. This utilizes the space between the steering wheels to set the impact gap of the baffle or to install the baffle itself, resulting in a more compact overall vehicle length.
[0052] This design reduces the width of the baffle, thus providing the lawnmower with more freedom in steering, meaning it can turn in a smaller space. It also protects the outer steering wheel when the lawnmower turns. For example, when turning left, the right steering wheel is further forward than the left, and the second protective unit can protect the right steering wheel.
[0053] In one possible implementation, the first protective part and the vehicle body are spaced apart along the length direction, and the gap between the first protective part and the vehicle body is greater than 10mm.
[0054] In one possible implementation, the minimum distance from the first protective part to the center of rotation of the steering wheel is greater than the radius of the steering wheel.
[0055] By setting the minimum distance from the first protective part to the center of rotation of the steering wheel to be greater than the radius of the steering wheel, it is possible to prevent the steering wheel from colliding with the first protective part when rotating, thereby improving the steering wheel's flexibility.
[0056] In one possible implementation, the first protective part and the vehicle body are spaced apart along the length direction, and the ratio of the gap distance between the first protective part and the vehicle body to the radius of the steering wheel is greater than or equal to 0.15 and less than or equal to 0.6.
[0057] In one possible implementation, a steering motor is also included; wherein,
[0058] In the vertical direction of the lawnmower, the steering motor is located in the space above the steering wheel.
[0059] By placing the steering motor above the steering wheels, vertical space is effectively utilized, saving horizontal space in the lawnmower body and resulting in a more compact overall design. The higher position of the steering wheels reduces the contact between the steering motor and the ground, lowering the risk of damage from ground elements such as mud, grass clippings, and moisture, thus improving the motor's durability and reliability. This layout allows the steering motor to connect directly to the steering wheels, reducing additional transmission components such as shafts and gears, simplifying the structure, and consequently reducing costs. Placing the steering motor higher helps optimize the lawnmower's center of gravity distribution, enhancing operational stability, especially on uneven terrain.
[0060] In one possible implementation, 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.
[0061] By setting the ratio of the dimension of the first protective part in the width direction to that of the second protective part in the width direction between 0.8 and 0.95, sufficient clearance space can be provided for the steering wheel, while also ensuring the structural strength of the baffle. Attached Figure Description
[0062] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0063] Figure 1 A top view of the frame structure of a lawnmower provided in an embodiment of this application;
[0064] Figure 2 A top view of the frame structure of a lawnmower provided in an embodiment of this application;
[0065] Figure 3 A top view of the frame structure of another lawnmower provided in an embodiment of this application;
[0066] Figure 4 A top view of the frame structure of another lawnmower provided in an embodiment of this application;
[0067] Figure 5 A top view of the frame structure of another lawnmower provided in an embodiment of this application;
[0068] Figure 6 for Figure 5 A schematic diagram showing the lawnmower turning;
[0069] Figure 7 A top view of the frame structure of another lawnmower provided in an embodiment of this application;
[0070] Figure 8 A top view of the frame structure of another lawnmower provided in an embodiment of this application;
[0071] Figure 9 This is a top view of the frame structure of another lawnmower provided in an embodiment of this application.
[0072] Explanation of reference numerals in the attached figures:
[0073] 100 - Lawn mower; 10 - Vehicle body; 11 - Front end of vehicle body;
[0074] 12 - Part 1; 13 - Part 2; 20 - Baffle;
[0075] 21-Avoidance section; 22-Reinforcement section; 23-First protection section;
[0076] 24 - Second protective section; 30 - Steering wheel; 40 - Drive wheel;
[0077] 50 - Steering motor; 60 - Power unit. Detailed Implementation
[0078] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0079] Lawn mowers are becoming increasingly popular because they can replace manual labor in trimming and cutting lawns in designated areas.
[0080] In order to improve the steering performance of lawnmowers in related technologies, steering wheels are usually installed at the front of the lawnmower. To prevent the steering wheels from colliding with other objects during driving, a bumper is usually installed at the front of the lawnmower.
[0081] However, the addition of anti-collision plates to lawnmowers in related technologies would significantly increase the length of the vehicle body, which would hinder the miniaturization of lawnmowers.
[0082] To address the aforementioned technical problems, this application provides a lawnmower with a compact structure and flexible steering.
[0083] The lawnmower provided in the embodiments of this application will now be described in detail with reference to the accompanying drawings.
[0084] Figure 1 This is a top view of the frame structure of a lawnmower provided in an embodiment of this application. Figure 2 This is a top view of the frame structure of a lawnmower provided in an embodiment of this application.
[0085] It should be noted that, for ease of description, in this embodiment, the width direction of the lawnmower is taken as the y-direction, and the length direction of the lawnmower is taken as the x-direction.
[0086] This application provides a lawnmower 100, such as... Figure 1 As shown, the lawnmower 100 may include a power unit 60, a vehicle body 10, two steering wheels 30, and a baffle 20. The vehicle body 10 is connected to the power unit 60. The two steering wheels 30 are located at the front of the vehicle body 10 and are spaced apart on both sides of the vehicle body 10 along the width direction (y-direction) of the lawnmower 100.
[0087] For example, the lawnmower 100 may also include a drive wheel 40, through which the power unit 60 can drive the lawnmower 100 to move. The drive wheel 40 may be the steering wheel 30 of the lawnmower 100 or the rear wheel of the lawnmower 100.
[0088] Of course, in some other embodiments, both the steering wheel and the rear wheel of the lawnmower are drive wheels. In this embodiment, the position of the drive wheels is not further limited.
[0089] like Figure 1 As shown, the baffle 20 can be installed at the front end 11 of the vehicle body. From the length direction (x direction) of the lawnmower 100, both ends of the baffle 20 are located within the outer contour of the two steering wheels 30.
[0090] In the width direction (y direction), both ends of the baffle 20 are provided with clearance portions 21. In the length direction (x direction), the clearance portion 21 is located at the end of the baffle 20 closer to the vehicle body 10, and a clearance space is formed between the clearance portion 21 and the steering wheel 30 for the steering wheel 30 to rotate.
[0091] It should be noted that there is a gap between the baffle 20 and the vehicle body 10, which provides some cushioning when the baffle 20 collides with an obstacle, allowing other components on the vehicle body 10 to detect the type of obstacle. Therefore, the end of the baffle 20 closer to the vehicle body 10 refers to the end of the baffle 20 that is closer to the rear end of the vehicle body 10 in the x-direction. Alternatively, it can be considered as the end of the baffle 20 relative to the inner side of the vehicle body 10 in the x-direction. The rear end of the vehicle body is the end that is opposite to the front end 11 of the vehicle body.
[0092] Define a plumb plane parallel to the length direction as the first plane, and a plumb plane parallel to the width direction as the second plane. The plumb planes are perpendicular to the ground.
[0093] For example, the steering wheel 30 may include a first state and a second state. When the steering wheel 30 is in the first state, the projection of the steering wheel 30 onto the ground extends along the length direction (x direction), and the orthographic projections of the steering wheel 30 and the avoidance part 21 overlap at least partially. That is, when the steering wheel 30 is in the first state, the steering wheel 30 does not turn.
[0094] When the steering wheel 30 is in the second state (see...) Figure 2 When the steering wheel 30 rotates (as shown), its projection onto the ground deviates from the length direction (x-direction). When the steering angle of the steering wheel 30 is greater than 45 degrees, the steering wheel 30 and the orthographic projection of the avoidance part 21 on the second plane at least partially coincide. That is, in the second state, the steering wheel 30 begins to rotate, and there is a certain positional relationship between the avoidance part 21 and the steering wheel 30. Specifically, when the rotation angle of the steering wheel 30 is greater than 45 degrees, the orthographic projection of the steering wheel 30 on the second plane partially coincides with the avoidance part 21, so that part of the structure of the steering wheel 30 is located within the space covered by the avoidance part 21 in the width direction (y-direction).
[0095] The phrase "when the steering angle of the steering wheel 30 is greater than 45 degrees, the steering wheel 30 and the orthographic projection of the avoidance part 21 on the second plane at least partially coincide" can be understood as follows: when the rotation angle of the steering wheel is greater than 45 degrees, the structure of the steering wheel is located within the space shielded by the avoidance part 21 to prevent interference between the baffle and the steering wheel. When the rotation angle of the steering wheel is within 45 degrees, it is located outside the baffle and will not interfere with the baffle.
[0096] Of course, in other embodiments, when the rotation angle of the steering wheel 30 is greater than 20°, the orthographic projection of the steering wheel 30 and the avoidance part 21 on the second plane can at least partially overlap. Thus, when the rotation angle of the steering wheel 30 is greater than 45°, the orthographic projection of the steering wheel 30 and the avoidance part 21 on the second plane can still at least partially overlap.
[0097] For example, when the rotation angle of the steering wheel 30 is greater than or equal to 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 within the space covered by the clearance portion 21 in the width direction (y direction). In the embodiments of this application, the minimum rotation angle is not limited when the orthographic projection of the steering wheel 30 and the clearance portion 21 at least partially coincides with the second plane, as long as the orthographic projection of the steering wheel 30 and the clearance portion 21 at least partially coincides with the second plane after the angle is greater than 45°.
[0098] Therefore, in the lawnmower 100 of this application embodiment, by setting a baffle 20 at the front end 11 of the lawnmower 100 body and setting the baffle 20 within the outer contour of the two steering wheels 30, the lawnmower 100 can be increased without increasing the width dimension of the lawnmower 100 when adding the baffle 20, which is conducive to the miniaturization of the lawnmower 100 and can also reduce the risk of collision when in narrow passages or near obstacles, thus improving the safety of operation.
[0099] By providing a clearance part 21 at one end of the baffle 20 near 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 baffle 20. This helps to improve the steering performance and flexibility of the lawnmower 100, especially in narrow spaces or when large-angle steering is required.
[0100] It should be noted that in order to ensure the structural strength of the baffle 20, the baffle 20 needs to be of a certain thickness, and a certain gap needs to be set between the baffle 20 and the vehicle body 10. Therefore, if the baffle 20 is set entirely on the outside of the steering wheel 30, the distance between the baffle 20 and the steering wheel 30 needs to be set slightly larger. This can prevent the baffle 20 from contacting the steering wheel 30 due to deformation or other issues when it collides with an obstacle. Since the steering wheel 30 is rotating, this will cause friction between the steering wheel 30 and the baffle 20, affecting the normal use of the steering wheel 30, and may also damage the baffle 20.
[0101] When the steering wheel 30 is set in the first state, the steering wheel 30 and the clearance part 21 overlap at least partially in the width direction. This allows the clearance part 21 to extend from one end toward the vehicle body 10 to between the two steering wheels 30. In other words, a part of the structure of the baffle 20 can share a part of the space in the length direction with the steering wheel 30. This ensures that the baffle 20 has a certain forward angle and improves the compactness of the lawnmower 100 compared to directly setting the entire baffle 20 in the front space of the steering wheel 30.
[0102] like Figure 1As shown, in the width direction (y direction), the two ends of the baffle 20 can be located within the inner contour of the two steering wheels 30.
[0103] For example, when the steering wheel 30 is in the first state, the two ends of the baffle 20 may have a certain gap with the inner side of the steering wheel 30. The clearance part 21 is provided on the side of the baffle 20 facing the vehicle body 10. Furthermore, in the length direction of the vehicle body 10, a part of the structure of the baffle 20 is located outside the steering wheel 30, and when the clearance part 21 is projected along the width direction (y direction) onto the first plane, a part of the projection of the clearance part 21 may be located on the steering wheel 30. Figure 1 The circumcircle of the steering wheel 30 is shown as the dashed circle in the figure. Figure 1 As shown, this prevents the steering wheel 30 from colliding with the baffle 20 during rotation.
[0104] It should be noted that in this embodiment, the size of the gap b between the end of the baffle 20 and the steering wheel 30 is not limited. For example, it can be 5mm, 10mm, etc. It can be calculated based on the outer diameter of the steering wheel 30. In this embodiment, no further limitation is made.
[0105] It should be noted that in the embodiments of this application, "orientation" refers to orientation in a broad sense and is not limited to being set up with the front and back facing each other.
[0106] By positioning the two ends of the baffle 20 inside the inner contour of the steering wheel 30, the baffle 20 can be positioned closer to the vehicle body 10. Since the two ends of the baffle 20 are positioned inside the steering wheel 30, there is no need to consider the collision between the portion of the baffle 20 located outside the steering wheel 30 and the steering wheel 30. Therefore, more of the baffle 20's structure can share the longitudinal space with the steering wheel 30, thereby improving the compactness of the lawnmower 100 and facilitating its miniaturization. Furthermore, with a smaller width, it is easier to operate and store in narrow areas or limited spaces. By limiting the width of the anti-collision plate, the amount of material used can be reduced, thereby lowering costs while maintaining necessary protective functions.
[0107] See also Figure 1 As shown, the baffle 20 may further include a reinforcing portion 22. In the width direction, the reinforcing portion 22 is located between the two abutment portions 21. In the length direction (x-direction), the reinforcing portion 22 is located on the side of the baffle 20 closest to the vehicle body 10. By providing the reinforcing portion 22, the structural strength of the baffle 20 can be increased, making it more resistant to external impact forces and improving the durability and reliability of the baffle 20.
[0108] For example, the clearance part 21 can be a groove on the baffle 20, with the opening of the groove facing the vehicle body 10.
[0109] This configuration allows the reinforcing part 22 to share a portion of the space with the steering wheel 30 in the length direction without increasing the length dimension of the lawnmower 100. It also reduces the gap between the baffle 20 and the vehicle body 10 in the length direction, making the lawnmower 100 more compact and facilitating its miniaturization.
[0110] It should be noted that the groove in the embodiments of this application can be a right-angled groove or an arc-shaped groove (e.g., Figure 3 (as shown) or irregular grooves. In this embodiment of the application, the shape of the groove is not further limited.
[0111] In one possible implementation, the ratio of the dimension a1 of the reinforcing part 22 in the width direction (y direction) to the maximum dimension a2 of the baffle 20 in the width direction (y direction) is between 0.8 and 0.95.
[0112] 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 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 this embodiment, the ratio of the dimension of the reinforcing part 22 in the width direction (y direction) to the maximum dimension of the baffle 20 in the width direction (y direction) is not further limited.
[0113] By setting the ratio of the dimension of the reinforcing part 22 in the width direction (y direction) to the maximum dimension of the baffle 20 in the width direction (y direction) between 0.8 and 0.95, the clearance part 21 can provide sufficient clearance space, and the structural strength of the baffle 20 can also be guaranteed.
[0114] In one possible implementation, the orthographic projection of the reinforcing part 22 onto the first plane at least partially coincides with the orthographic projection of the steering wheel 30 onto the first plane.
[0115] This configuration allows the reinforcing part 22 to extend in the length direction (x direction) between the two steering wheels 30, thereby reducing the gap between the baffle 20 and the vehicle body 10, making the structure of the lawnmower 100 more compact, and also optimizing the weight distribution at the front end of the lawnmower 100, which helps to improve the stability and maneuverability of the lawnmower 100.
[0116] In one possible implementation, the baffle 20 is spaced apart from the vehicle body 10 in the length direction (x direction), and the gap distance L between the baffle 20 and the vehicle body 10 is greater than 10mm.
[0117] For example, the gap distance L between the side of the reinforcing part 22 facing the vehicle body 10 and the vehicle body 10 is greater than 10mm.
[0118] For example, the gap distance L between the baffle 20 and the vehicle body 10 can be 11mm, 12mm, 13mm, 15mm, 20mm, etc. In this embodiment of the application, the gap distance between the baffle 20 and the vehicle body 10 is not further limited.
[0119] By creating a gap between the baffle 20 and the vehicle body 10, this gap acts as a buffer zone. When the lawnmower 100 encounters an obstacle, the baffle 20 can move or deform within a certain range to absorb the impact force, thereby reducing the direct impact on the vehicle body 10 and protecting the structural integrity of the lawnmower 100. If there were no gap between the baffle 20 and the vehicle body 10, any direct impact could cause the vehicle body 10 to deform or be damaged. The gap allows the baffle 20 some room to move when impacted, thus reducing the risk of damage.
[0120] For example, a detection component may be provided on the vehicle body 10. When the baffle 20 comes into contact with an obstacle, the detection component on the vehicle body 10 can detect the type of obstacle and then adjust the working route or working mode of the lawnmower 100 according to the type of obstacle.
[0121] In one possible implementation, the minimum distance from the avoidance part 21 to the center of rotation of the steering wheel 30 is greater than the radius r of the steering wheel 30. This arrangement prevents the steering wheel 30 from colliding with the baffle 20 when steering.
[0122] In one possible implementation, the reinforcing part 22 and the vehicle body 10 are spaced apart in the length direction, and the ratio of the gap distance L between the reinforcing part 22 and the vehicle body 10 to the radius r of the steering wheel 30 is greater than or equal to 0.15 and less than or equal to 0.6.
[0123] For example, the ratio of the gap distance L between the reinforcing part 22 and the vehicle body 10 to the radius r of the steering wheel 30 can be 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, etc. In this embodiment, the ratio of the gap distance L between the reinforcing part 22 and the vehicle body 10 to the radius r of the steering wheel 30 is not further limited.
[0124] It should be noted that the specific diameter of the steering wheel 30 in this embodiment is not limited. For example, in one possible implementation, the diameter of the steering wheel ranges from 100mm to 300mm. For instance, the diameter of the steering wheel can be 100mm, 110mm, 115mm, 120mm, 125mm, 130mm, 135mm, 140mm, 145mm, 150mm, 155mm, 160mm, 165mm, 170mm, 180mm, 190mm, 200mm, 210mm, 220mm, 230mm, 240mm, 250mm, 260mm, 270mm, 280mm, 290mm, or 300mm. The specific diameter can be determined based on the model of the lawnmower 100, and is not further limited in this embodiment.
[0125] In one possible implementation, the maximum steering angle of the steering wheel 30 is between 90 and 150 degrees.
[0126] It should be noted that the steering angle of the steering wheel 30 refers to the angle through which the steering wheel 30 rotates from the first state to the second state. For example, the maximum steering angle of the steering wheel 30 can be 90 degrees, 100 degrees, 110 degrees, 120 degrees, 130 degrees, 140 degrees, 150 degrees, etc. In this embodiment of the application, the specific angle of the maximum steering angle of the steering wheel 30 is not further limited.
[0127] This configuration improves the steering performance of the lawnmower 100, allowing it to move more flexibly and adapt to different working environments.
[0128] In one possible implementation, such as Figure 4 As shown, the vehicle body 10 may include a first part 12 and a second part 13. In the width direction (y-direction), the first part 12 is located between the two steering wheels 30, and the first part 12 is disposed opposite to the inner side of the steering wheels 30. In the length direction (x-direction), the second part 13 is located on the side of the steering wheels 30 near the rear end of the vehicle body 10, and the second part 13 is disposed opposite to the side of the steering wheels 30 near the rear end of the vehicle body 10.
[0129] This configuration allows the vehicle body 10 to form a semi-enclosed structure on the inner side of the steering wheel 30 in the width direction (y direction) and on the side of the steering wheel 30 in the length direction (x direction) near the rear end of the vehicle body 10, thereby better protecting the steering wheel 30.
[0130] In one possible implementation, the lawnmower 100 may further include a steering motor 50. The steering motor 50 is located in the upper space above the steering wheel 30 in the height direction of the lawnmower 100. Of course, in other embodiments, the steering motor 50 may be located in other positions, such as in the side space of the steering wheel 30. In this embodiment, the specific location of the steering motor 50 is not further limited.
[0131] By placing the steering motor 50 above the steering wheel 30, vertical space is effectively utilized, saving horizontal space in the lawnmower 100 and making the overall design more compact. The higher position of the steering wheel 30 reduces the contact between the steering motor 50 and the ground, lowering the risk of damage to the steering motor 50 from ground factors such as mud, grass clippings, and moisture, thereby improving the durability and reliability of the steering motor 50. This layout allows the steering motor 50 to connect directly to the steering wheel 30, reducing additional transmission components such as shafts and gears, simplifying the structure, and thus reducing costs. Placing the steering motor 50 at a higher position helps optimize the center of gravity distribution of the lawnmower 100, enhancing the stability of the lawnmower 100 during operation, especially on uneven terrain.
[0132] Figures 1-4 In the embodiments described, the baffle 20 is arranged within the outer contour of the two steering wheels 30, specifically within the inner contour of the two steering wheels 30. Of course, in other embodiments, the baffle 20 may have other arrangements.
[0133] like Figure 5 As shown in the figure, this application embodiment provides a lawnmower 100, which may include a power unit 60, a vehicle body 10, two steering wheels 30, and a baffle 20. The vehicle body 10 is connected to the power unit 60. The two steering wheels 30 are located at the front of the vehicle body 10, and are spaced apart from each other on both sides of the vehicle body 10 along the width direction (y-direction) of the lawnmower 100.
[0134] For example, the lawnmower 100 may also include a drive wheel 40, through which the power unit 60 can drive the lawnmower 100 to move. The drive wheel 40 may be the steering wheel 30 of the lawnmower 100 or the rear wheel of the lawnmower 100.
[0135] Of course, in some other embodiments, both the steering wheel and the rear wheel of the lawnmower are drive wheels. In this embodiment, the position of the drive wheels is not further limited.
[0136] like Figure 5As shown, the baffle 20 can be disposed at the front end 11 of the vehicle body. Viewed from the length direction (x-direction) of the lawnmower 100, both ends of the baffle 20 are located within the outer contours of the two steering wheels 30. The baffle 20 may include a first protective part 23 and a second protective part 24, with the first protective part 23 positioned closer to the vehicle body 10 relative to the second protective part 24. When the baffle impacts an obstacle, it moves relative to the lawnmower body towards the lawnmower body and triggers a collision sensor. At this time, the baffle is in an impact state. When the collision sensor is not triggered, the baffle is in an impact state. Thus, when the baffle is in an impact state, it moves towards the lawnmower body, causing at least a portion of the first protective part to overlap with the projection of the steering wheels onto the second plane. Optionally, when the baffle is in a non-impact state, at least a portion of the first protective part overlaps with the projection of the steering wheels onto the second plane. Optionally, when the baffle is in a non-impact state, the projection of the first protective part onto the second plane does not overlap with the projection of the steering wheel onto that plane; when the baffle is in an impact state, their projections overlap. This utilizes the space between the steering wheels to set the impact gap of the baffle or to install the baffle itself, resulting in a more compact overall vehicle length.
[0137] In the length direction, at least a portion of the structure of the second protective part is provided corresponding to the steering wheel 30; a vertical plane parallel to the length direction is defined as the first plane, and the orthographic projection of the first protective part onto the first plane at least partially overlaps with the orthographic projection of the steering wheel 30 onto the first plane.
[0138] In the longitudinal direction (x direction), at least a portion of the structure of the second protective part 24 is disposed opposite to the steering wheel 30. The orthographic projection of the first protective part 23 on the first plane at least partially overlaps with the orthographic projection of the steering wheel 30 on the first plane.
[0139] In other words, the second protective part 24 of the baffle 20 extends in the width direction between the outer and inner contours of the steering wheel 30. This provides a certain degree of protection for the steering wheel 30.
[0140] The lawnmower 100 provided in this application embodiment, by providing a baffle 20 at the front end 11 of the lawnmower 100 body and positioning the baffle 20 within the outer contour of the two steering wheels 30, can increase the width (y-direction) dimension of the lawnmower 100 without increasing the size of the lawnmower 100, which is beneficial for the miniaturization of the lawnmower 100. It can also reduce the risk of collisions in narrow passages or near obstacles, improving operational safety. By positioning a portion of the second protective part 24 opposite the side of the steering wheel 30 away from the rear end of the body 10, the steering wheel 30 can be protected, preventing collisions during operation.
[0141] By setting the orthographic projection of the first protective part 23 on the first plane to at least partially overlap with the orthographic projection of the steering wheel 30 on the first plane, the first protective part 23 and the steering wheel 30 can share a portion of the space in the length direction (x direction), thereby reducing the gap between the baffle 20 and the vehicle body 10, making the structure of the entire lawnmower 100 more compact, which is beneficial to the miniaturization of the lawnmower 100.
[0142] In one possible implementation, the two ends of the second protective part 24 are located within the outer contour of the two steering wheels 30 in the width direction (y direction).
[0143] This design ensures that the second protective section 24 does not increase the width (y-direction) of the lawnmower 100, which is beneficial for the miniaturization of the lawnmower 100.
[0144] Define a plumb line parallel to the width direction (y direction) as the second plane.
[0145] like Figure 5 As shown, in the orthographic projection of the lawnmower onto the second plane, the two ends of the first protective part 23 can be located within the inner contours of the two steering wheels 30. In the width direction (y direction), the two ends of the second protective part 24 are located outside the inner contours of the two steering wheels 30.
[0146] This design reduces the width (y-direction) dimension of the baffle 20, thus providing the lawnmower 100 with greater freedom of movement, meaning it can turn within a smaller space. It also protects the steering wheel 30 located on the outer ring of the lawnmower 100 when it turns. For example, as... Figure 6 As shown, when turning left, the steering wheel 30 on the right is further forward than the steering wheel 30 on the left, and the second protective part 24 can protect the steering wheel 30 on the right.
[0147] See also Figure 5 As shown, the dimension n of the first protective part 23 in the length direction (x direction) is greater than the dimension m of the second protective part 24 in the length direction (x direction).
[0148] In other words, the thickness n of the first protective part 23 is greater than the thickness m of the second protective part 24. This makes the second protective part 24, located in front of the steering wheel 30, relatively thinner than the first protective part 23. While ensuring sufficient clearance between the second protective part 24 and the steering wheel 30, the clearance L between the baffle 20 and the vehicle body 10 can be reduced by increasing the thickness of the second protective part 24. This allows the overall center of gravity of the baffle 20 to be closer to the vehicle body 10, resulting in a more compact structure for the lawnmower 100. It also optimizes the weight distribution at the front end of the lawnmower 100, which helps improve the stability and maneuverability of the lawnmower 100.
[0149] In one possible implementation, the ratio of the dimension d1 of the first protective part 23 in the width direction (y direction) and the dimension d2 of the second protective part 24 in the width direction (y direction) is between 0.8 and 0.95.
[0150] For example, the ratio of the dimension d1 of the first protective part 23 in the width direction (y direction) and the dimension d2 of the second protective part 24 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 embodiments of this application, the ratio of the dimension d1 of the first protective part 23 in the width direction (y direction) and the dimension d2 of the second protective part 24 in the width direction (y direction) is not further limited.
[0151] By setting the ratio of the dimension d1 of the first protective part 23 in the width direction (y direction) and the dimension d2 of the second protective part 24 in the width direction (y direction) between 0.8 and 0.95, sufficient clearance space can be provided for the steering wheel 30, and the structural strength of the baffle 20 can also be guaranteed.
[0152] In one possible implementation, the first protective part 23 and the vehicle body 10 are spaced apart in the length direction (x direction), and the gap distance L between the first protective part 23 and the vehicle body 10 is greater than 10mm.
[0153] For example, the gap distance L between the first protective part 23 and the vehicle body 10 can be 11mm, 12mm, 13mm, 15mm, 20mm, etc. In this embodiment, the gap distance between the first protective part 23 and the vehicle body 10 is not further limited.
[0154] By providing a gap between the first protective section 23 and the vehicle body 10, this gap acts as a buffer zone. When the lawnmower 100 encounters an obstacle, the baffle 20 can move or deform within a certain range to absorb the impact force, thereby reducing the direct impact on the vehicle body 10 and protecting the structural integrity of the lawnmower 100. If there were no gap between the first protective section 23 and the vehicle body 10, any direct impact could cause the vehicle body 10 to deform or be damaged. The gap allows the baffle 20 some room to move when impacted, thus reducing the risk of damage.
[0155] For example, a detection component may be provided on the vehicle body 10. When the baffle 20 comes into contact with an obstacle, the detection component on the vehicle body 10 can detect the type of obstacle and then adjust the working route or working mode of the lawnmower 100 according to the type of obstacle.
[0156] Similarly, in the length direction (x direction), the second protective part 24 and the steering wheel 30 can also be spaced apart, and the gap distance 'a' between the second protective part 24 and the steering wheel 30 can be greater than 5 mm. For example, the gap distance '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, etc. In this embodiment, the gap 'a' between the second protective part 24 and the steering wheel 30 is not further limited.
[0157] By spaced apart in the longitudinal direction (x-direction) by the second protective part 24 and the steering wheel 30, this gap acts as a buffer zone. When the lawnmower 100 encounters an obstacle, the baffle 20 can move or deform within a certain range to absorb the impact force, thereby reducing the direct impact on the steering wheel 30 and protecting the structural integrity of the lawnmower 100. If there is no gap between the baffle 20 and the steering wheel 30, any direct impact may cause the baffle 20 to rub against the steering wheel 30, resulting in damage to the baffle 20. The gap allows the baffle 20 some room to move when impacted, thereby reducing the risk of damage.
[0158] In one possible implementation, the minimum distance from the first protective part 23 to the rotation center of the steering wheel 30 is greater than the radius r of the steering wheel 30.
[0159] By setting the minimum distance between the first protective part 23 and the rotation center of the steering wheel 30 to be greater than the radius of the steering wheel 30, it is possible to prevent the steering wheel 30 from colliding with the first protective part 23 when rotating, thereby improving the flexibility of the steering wheel 30.
[0160] In one possible implementation, the first protective part 23 and the vehicle body 10 are spaced apart along the length direction, and the ratio of the gap distance L between the first protective part 23 and the vehicle body 10 to the radius r of the steering wheel 30 is greater than or equal to 0.15 and less than or equal to 0.6.
[0161] For example, the ratio of the gap distance L between the first protective part 23 and the vehicle body 10 to the radius r of the steering wheel 30 can be 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, etc. In this embodiment, the ratio of the gap distance L between the first protective part 23 and the vehicle body 10 to the radius r of the steering wheel 30 is not further limited.
[0162] The specific diameter of the steering wheel 30 in this embodiment is not limited. For example, in one possible implementation, the diameter of the steering wheel ranges from 100mm to 300mm. For instance, the diameter of the steering wheel can be 100mm, 110mm, 115mm, 120mm, 125mm, 130mm, 135mm, 140mm, 145mm, 150mm, 155mm, 160mm, 165mm, 170mm, 180mm, 190mm, 200mm, 210mm, 220mm, 230mm, 240mm, 250mm, 260mm, 270mm, 280mm, 290mm, or 300mm. The specific diameter can be determined based on the model of the lawnmower 100. In this embodiment, no further limitation is made.
[0163] For example, such as Figure 7 As shown, the two ends of the second protective part 24 form avoidance parts 21, which are located on one side of the first protective part 23. The minimum distance from the avoidance part 21 to the rotation center of the steering wheel 30 is greater than the radius r of the steering wheel 30. This arrangement increases the design flexibility of the first protective part 23, and the structure of the first protective part 23 can be adjusted according to the structure of the avoidance part 21, thereby improving the structural strength of the baffle 20.
[0164] For example, the avoidance part 21 can be a groove with the opening facing the vehicle body 10. The groove can be a right-angled groove structure or an arc-shaped groove structure. In this embodiment, the specific structure of the avoidance part 21 is not further limited.
[0165] In one possible implementation, the maximum steering angle of the steering wheel 30 is between 90 and 150 degrees.
[0166] It should be noted that the steering angle of the steering wheel 30 refers to the angle through which the steering wheel 30 rotates from the first state to the second state. For example, the maximum steering angle of the steering wheel 30 can be 90 degrees, 100 degrees, 110 degrees, 120 degrees, 130 degrees, 140 degrees, 150 degrees, etc. In this embodiment of the application, the specific angle of the maximum steering angle of the steering wheel 30 is not further limited.
[0167] This configuration improves the steering performance of the lawnmower 100, allowing it to move more flexibly and adapt to different working environments.
[0168] In one possible implementation, such as Figure 7 As shown, the vehicle body 10 may include a first part 12 and a second part 13. In the width direction (y-direction), the first part 12 is located between the two steering wheels 30, and is positioned opposite to the inner side of the steering wheels 30. In the length direction (x-direction), the second part 13 is located on the side of the steering wheels 30 near the rear end of the vehicle body 10, and is positioned opposite to the side of the steering wheels 30 near the rear end of the vehicle body 10. The rear end of the vehicle body is the end opposite to the front end 11 of the vehicle body.
[0169] This configuration allows the vehicle body 10 to form a semi-enclosed structure on the inner side of the steering wheel 30 in the width direction (y direction) and on the side of the steering wheel 30 in the length direction (x direction) near the rear end of the vehicle body 10, thereby better protecting the steering wheel 30.
[0170] In one possible implementation, the lawnmower 100 may further include a steering motor 50. The steering motor 50 is located in the upper space above the steering wheel 30 in the height direction of the lawnmower 100. Of course, in other embodiments, the steering motor 50 may be located in other positions, such as in the side space of the steering wheel 30. In this embodiment, the specific location of the steering motor 50 is not further limited.
[0171] By placing the steering motor 50 above the steering wheel 30, vertical space can be effectively utilized, saving horizontal space in the lawnmower 100 body 10 and making the overall design more compact. The higher position of the steering wheel 30 reduces the contact between the steering motor 50 and the ground, lowering the risk of damage to the steering motor 50 caused by ground factors such as mud, grass clippings, and moisture, thereby improving the durability and reliability of the steering motor 50. This layout allows the steering motor 50 to connect directly to the steering wheel 30, reducing additional transmission components such as shafts and gears, simplifying the structure, and thus reducing costs. Placing the steering motor 50 at a higher position helps optimize the center of gravity distribution of the lawnmower 100, enhancing the stability of the lawnmower 100 during operation, especially on uneven terrain.
[0172] Of course, in other embodiments, the baffle 20 can also be disposed between the inner contours of the two steering wheels 30, such as... Figure 8 As shown, viewed from the length direction (x direction) of the vehicle body 10, the baffle 20 is located between the inner contours of the two steering wheels 30. The orthographic projection of the baffle 20 on the second plane at least partially coincides with the orthographic projection of the steering wheels 30 on the second plane.
[0173] This allows part of the structure of the baffle 20 to be extended between the two steering wheels 30, that is, to share a portion of the space in the length direction with the steering wheels 30, thereby reducing the gap between the vehicle body 10 and the baffle 20, making the structure of the lawnmower 100 more compact and conducive to the miniaturization of the lawnmower 100.
[0174] In one possible implementation, the maximum steering angle of the steering wheel 30 is between 90 and 150 degrees.
[0175] It should be noted that the steering angle of the steering wheel 30 refers to the angle through which the steering wheel 30 rotates from the first state to the second state. For example, the maximum steering angle of the steering wheel 30 can be 90 degrees, 100 degrees, 110 degrees, 120 degrees, 130 degrees, 140 degrees, 150 degrees, etc. In this embodiment of the application, the specific angle of the maximum steering angle of the steering wheel 30 is not further limited.
[0176] This configuration improves the steering performance of the lawnmower 100, allowing it to move more flexibly and adapt to different working environments.
[0177] In one possible implementation, such as Figure 9 As shown, the vehicle body 10 may include a first part 12 and a second part 13. In the width direction (y-direction), the first part 12 is located between the two steering wheels 30, and is positioned opposite to the inner side of the steering wheels 30. In the length direction (x-direction), the second part 13 is located on the side of the steering wheels 30 near the rear end of the vehicle body 10, and is positioned opposite to the side of the steering wheels 30 near the rear end of the vehicle body 10. The rear end of the vehicle body is the end opposite to the front end 11 of the vehicle body.
[0178] This configuration allows the vehicle body 10 to form a semi-enclosed structure on the inner side of the steering wheel 30 in the width direction (y direction) and on the side of the steering wheel 30 in the length direction (x direction) near the rear end of the vehicle body 10, thereby better protecting the steering wheel 30.
[0179] In one possible implementation, the lawnmower 100 may further include a steering motor 50. The steering motor 50 is located in the upper space above the steering wheel 30 in the height direction of the lawnmower 100. Of course, in other embodiments, the steering motor 50 may be located in other positions, such as in the side space of the steering wheel 30. In this embodiment, the specific location of the steering motor 50 is not further limited.
[0180] By placing the steering motor 50 above the steering wheel 30, vertical space can be effectively utilized, saving horizontal space in the lawnmower 100 body 10 and making the overall design more compact. The higher position of the steering wheel 30 reduces the contact between the steering motor 50 and the ground, lowering the risk of damage to the steering motor 50 caused by ground factors such as mud, grass clippings, and moisture, thereby improving the durability and reliability of the steering motor 50. This layout allows the steering motor 50 to connect directly to the steering wheel 30, reducing additional transmission components such as shafts and gears, simplifying the structure, and thus reducing costs. Placing the steering motor 50 at a higher position helps optimize the center of gravity distribution of the lawnmower 100, enhancing the stability of the lawnmower 100 during operation, especially on uneven terrain.
[0181] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.
[0182] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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 of this application.
[0183] In the description of this application, it should be understood that the terms “comprising” and “having” as used herein, and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are expressly listed, but may include other steps or units that are not expressly listed or that are inherent to such process, method, product, or apparatus.
[0184] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the connection within two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.
[0185] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A lawnmower, characterized in that, include: Power unit; The vehicle body is connected to the power unit; Two steering wheels are located at the front of the vehicle body, and the two steering wheels are arranged at intervals on both sides of the vehicle body along the width direction of the lawnmower; A baffle is located at the front end of the vehicle body, and when viewed along the length of the lawnmower, both ends of the baffle are within the outer contours of the two steering wheels; wherein, Both ends of the baffle in the width direction are provided with clearance portions; In the length direction, the clearance portion is located at one end of the baffle closer to the vehicle body, and a clearance space for the steering wheel to rotate is formed between the clearance portion and the steering wheel; A vertical plane parallel to the length direction is defined as a first plane, and a vertical plane parallel to the width direction is defined as a second plane. The steering wheel includes a first state and a second state. When the steering wheel is in the first state, the projection of the steering wheel onto the ground extends along the length direction, and the orthographic projections of the steering wheel and the avoidance part on the first plane at least partially overlap. When the steering wheel is in the second state, the steering wheel rotates so that the projection of the steering wheel onto the ground deviates from the length direction. When the steering angle of the steering wheel is greater than 45 degrees, the orthographic projections of the steering wheel and the avoidance part on the second plane at least partially coincide.
2. The lawnmower according to claim 1, characterized in that, The baffle also includes a reinforcing section; wherein... In the width direction, the reinforcing portion is located between the two clearance portions; In the length direction, the reinforcing part is located on the side of the baffle closer to the vehicle body.
3. The lawnmower according to claim 2, characterized in that, The clearance portion is a groove on the baffle, and the opening of the groove faces the vehicle body.
4. The lawnmower according to claim 3, characterized in that, The ratio of the dimension of the reinforcing part in the width direction to the maximum dimension of the baffle in the width direction is between 0.8 and 0.
95.
5. The lawnmower according to any one of claims 2-4, characterized in that, Along the length direction, the reinforcing part and the vehicle body are spaced apart, and the ratio of the gap distance between the reinforcing part and the vehicle body to the radius of the steering wheel is greater than or equal to 0.15 and less than or equal to 0.
6.
6. The lawnmower according to any one of claims 1-4, characterized in that, In the width direction, both ends of the baffle are located within the inner contours of the two steering wheels.
7. The lawnmower according to any one of claims 1-4, characterized in that, The maximum steering angle of the steering wheel is between 90 degrees and 150 degrees; When the steering angle of the steering wheel is greater than 20 degrees, the steering wheel and the abutment portion at least partially overlap in the orthographic projection on the second plane.
8. The lawnmower according to any one of claims 1-4, characterized in that, The vehicle body comprises a first part and a second part; wherein... In the width direction, the first portion is located between the two steering wheels, and the first portion is disposed opposite to the inner side of the steering wheel; In the length direction, the second portion is located on the side of the steering wheel near the rear end of the vehicle body, and the second portion is disposed opposite to the side of the steering wheel near the rear end of the vehicle body.
9. The lawnmower according to any one of claims 1-4, characterized in that, It also includes a steering motor; among which, In the vertical direction of the lawnmower, the steering motor is located in the space above the steering wheel.
10. A lawnmower, characterized in that, include: Power unit; The vehicle body is connected to the power unit; Two steering wheels are located at the front of the vehicle body, and the two steering wheels are arranged at a distance from each other on both sides of the vehicle body in the width direction; A baffle is located at the front end of the vehicle body, and when viewed along the length of the lawnmower, both ends of the baffle are within the outer contours of the two steering wheels; wherein, The baffle includes a first protective part and a second protective part, wherein the first protective part is disposed close to the vehicle body relative to the second protective part; In the length direction, at least a portion of the structure of the second protective part is provided corresponding to the steering wheel; A vertical plane parallel to the length direction is defined as a first plane. The first protective part includes an impact state and a non-impact state. In at least one of the impact state or the non-impact state, the orthographic projection of the first protective part onto the first plane at least partially overlaps with the orthographic projection of the steering wheel onto the first plane.
11. The lawnmower according to claim 10, characterized in that, The first protective part is larger in length direction than the second protective part, and the two ends of the second protective part form clearance parts, which are located on one side of the first protective part.
12. The lawnmower according to claim 10 or 11, characterized in that, The maximum steering angle of the steering wheel is between 90 and 150 degrees.
13. The lawnmower according to claim 10 or 11, characterized in that, The vehicle body comprises a first part and a second part; wherein... In the width direction, the first portion is located between the two steering wheels, and the first portion is disposed opposite to the inner side of the steering wheel; In the length direction, the second portion is located on the side of the steering wheel near the rear end of the vehicle body, and the second portion is disposed opposite to the side of the steering wheel near the rear end of the vehicle body.
14. The lawnmower according to claim 10 or 11, characterized in that, In the width direction, both ends of the second protective part are located within the outer contour of the two steering wheels.
15. The lawnmower according to claim 14, characterized in that, Define a plumb surface parallel to the width direction as the second plane; On the orthographic projection of the lawnmower onto the second plane, the two ends of the first protective part are located within the inner contours of the two steering wheels, and the two ends of the second protective part are located outside the inner contours of the two steering wheels.
16. The lawnmower according to claim 15, characterized in that, Along the length direction, the first protective part and the vehicle body are spaced apart, and the gap between the first protective part and the vehicle body is greater than 10mm.
17. The lawnmower according to claim 16, characterized in that, The minimum distance from the first protective part to the rotation center of the steering wheel is greater than the radius of the steering wheel.
18. The lawnmower according to claim 10 or 11, characterized in that, Along the length direction, the first protective part and the vehicle body are spaced apart, and the ratio of the gap distance between the first protective part and the vehicle body to the radius of the steering wheel is greater than or equal to 0.15 and less than or equal to 0.
6.
19. The lawnmower according to claim 10 or 11, characterized in that, It also includes a steering motor; among which, In the vertical direction of the lawnmower, the steering motor is located in the space above the steering wheel.
20. The lawnmower according to claim 10 or 11, characterized in 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.