Lawn mower

Abstract

This application discloses a lawnmower, belonging to the technical field of lawnmower equipment. The disclosed lawnmower includes: a body having a first side surface, at least a portion of which lies within a first plane, and the first side surface can contact obstacles; a first blade and a second blade, both mounted on the bottom end of the body, the distance between the second blade and the first plane being less than the distance between the first blade and the first plane. The second blade of this lawnmower can trim the area between the first blade and the obstacle, thereby reducing missed grass.

Description

Technical Field

[0001] This application belongs to the field of lawn mowing equipment technology, specifically relating to a lawn mower. Background Technology

[0002] A lawnmower is a mechanical tool used to trim lawns, vegetation, etc. It can not only improve trimming efficiency but also save manpower. It is widely used in garden maintenance, lawn mowing, and vegetation management.

[0003] However, traditional lawnmowers have certain drawbacks. Specifically, there are usually obstacles, such as walls, at the edges of the mowing area. When using a traditional lawnmower to mow the edges, the movement of the lawnmower away from the center of the mowing area is restricted due to the obstruction of the obstacles. Furthermore, when the side of the lawnmower facing the obstacle is close to the obstacle, there is often a certain gap between the lawnmower blade and the obstacle. In this case, the lawnmower cannot mow the area between the blade and the obstacle, resulting in missed mowing. Utility Model Content

[0004] The purpose of this application is to provide a lawnmower that can solve the problem in the related art that lawnmowers cannot trim the area between the blade and obstacles.

[0005] This application provides a lawnmower, including: The body has a first side surface, at least a portion of which lies within a first plane, and the first side surface is capable of contacting an obstacle; A first cutting tool and a second cutting tool are both mounted on the bottom end of the machine body. The distance between the second cutting tool and the first plane is less than the distance between the first cutting tool and the first plane.

[0006] In this embodiment, at least a portion of the first side surface lies within a first plane, and the first side surface can contact an obstacle. The distance between the second blade and the first plane is less than the distance between the first blade and the first plane. This means that when the first side surface contacts the obstacle, the second blade is closer to the obstacle than the first blade. As a result, the second blade can trim the area between the first blade and the obstacle, thereby reducing missed weeds. Attached Figure Description

[0007] Figure 1 This is an exploded schematic diagram of the lawnmower disclosed in an embodiment of this application; Figure 2 This is a schematic diagram of the lawnmower disclosed in the embodiments of this application from a first-view perspective; Figure 3This is a schematic diagram of the lawnmower disclosed in the embodiments of this application from a second perspective. Figure 4 This is a schematic diagram illustrating the linkage arrangement of the lawnmower disclosed in the embodiments of this application; Figure 5 This is one of the cross-sectional views of the lawnmower disclosed in the embodiments of this application; Figure 6 This is a second cross-sectional view of the lawnmower disclosed in the embodiments of this application; Figure 7 This is a schematic diagram of the structure of the second cutting tool disclosed in one of the embodiments of this application in one of the states; Figure 8 This is a schematic diagram of the structure of the second cutting tool disclosed in an embodiment of this application in another state; Figure 9 This is a schematic diagram of the fuselage structure disclosed in the embodiments of this application; Figure 10 This is a schematic diagram illustrating the arrangement of the limiting part and the abutting part as disclosed in the embodiments of this application; Figure 11 This is a schematic diagram of the structure of the stop disclosed in the embodiments of this application; Figure 12 This is a schematic diagram of the structure of the seat disclosed in the embodiments of this application.

[0008] Explanation of reference numerals in the attached figures: 100-Body, 110-Fuselage, 111-Opening, 112-Abutting part, 113-Limiting part, 1131-Allowing hole, 114-Blocking part, 120-First traveling wheel, 121-First side, 130-Guide seat, 131-Guide groove, 140-Second traveling wheel, 141-Second side, 150-Third traveling wheel, 160-Fourth traveling wheel; 210-First cutting tool, 220-Second cutting tool, 230-Base, 231-First protrusion, 2311-Allowing groove, 232-Second protrusion, 233-Second magnetic component, 234-Third driving source; 300-stop, 310-arc-notch, 320-first through groove, 330-second through groove, 340-abutment part, 350-locking part; 410 - First drive source, 420 - Connecting rod, 421 - First magnetic component, 422 - Guide post; 510 - First position detector; 610 - Second drive source, 611 - First gear, 620 - Screw, 621 - Second gear; 700-Vision Module; 810 - Ground, 820 - Fingers. Detailed Implementation

[0009] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0010] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0011] The lawnmower provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0012] Please refer to Figures 1 to 12 As shown in the illustration, this application provides a lawnmower, including: a body 100, a first blade 210, and a second blade 220. The lawnmower is, for example, a lawnmower robot, which can automatically perform lawnmowing.

[0013] Specifically, the body 100 has a first side surface 121, at least a portion of which lies within a first plane, and the first side surface 121 can contact an obstacle. Optionally, the obstacle is, for example, a wall, and the first plane is parallel to the wall. Furthermore, when the first side surface 121 is entirely within the first plane, the first side surface 121 can, for example, entirely contact the obstacle. When a portion of the first side surface 121 is within the first plane, for example, only the portion of the first side surface 121 within the first plane can contact the obstacle.

[0014] The first cutter 210 and the second cutter 220 are both mounted at the bottom of the machine body 100. The distance between the second cutter 220 and the first plane is less than the distance between the first cutter 210 and the first plane. Both the first cutter 210 and the second cutter 220 are used for cutting operations.

[0015] In this embodiment, at least a portion of the first side surface 121 lies within a first plane, and the first side surface 121 can contact an obstacle. The distance between the second blade 220 and the first plane is less than the distance between the first blade 210 and the first plane. This means that when the first side surface 121 contacts an obstacle, the second blade 220 is closer to the obstacle than the first blade 210. Therefore, the second blade 220 can trim the area between the first blade 210 and the obstacle, thereby reducing missed weeds.

[0016] In another embodiment, reference Figures 1 to 3 As shown, the lawnmower also includes a stop 300, which is mounted on the body 100 and can block the side of the second blade 220 facing the first plane. Optionally, the stop 300 may be, for example, a baffle.

[0017] In this embodiment, the stop 300 serves a protective function. The setting of the stop 300 reduces the probability that the second blade 220 may accidentally injure people or animals or other external objects, thereby improving the safety of using the lawnmower.

[0018] In other embodiments, the lawnmower may also exclude the stop 300.

[0019] In another embodiment, reference Figure 2 As shown, the stop 300 is height-adjustable and mounted on the body 100. During lawnmower operation, various terrains may be encountered. The height-adjustable design of the stop 300 allows the operator to adjust its height according to changes in terrain. This allows the lawnmower to adapt well to different terrains, improving its versatility and contributing to higher mowing efficiency. Furthermore, when the second blade 220 is not needed for cutting, raising the stop 300 reduces the space occupied by the lawnmower. Also, when the ground 810 is uneven, raising the stop 300 helps the lawnmower pass more smoothly over protruding areas of the ground 810.

[0020] Optionally, during lawnmower operation, refer to Figure 2 As shown, the operator's fingers 820 cannot pass through the gap between the stop 300 and the ground 810, thus improving the safety of using the lawnmower. Specifically, during lawnmower operation, the distance between the stop 300 and the ground 810 is not less than 8mm, and more specifically, the distance between the stop 300 and the ground 810 is, for example, 8mm.

[0021] In other embodiments, the stop 300 may also be fixedly installed on the body 100, that is, the height of the stop 300 is not adjustable.

[0022] In a further embodiment, reference is made to... Figures 1 to 3As shown, the machine body 100 includes a body 110 and a first traveling wheel 120 rotatably mounted on the body 110. The first traveling wheel 120 is located on the side of the body 110 facing the first plane, and the first side 121 includes the side of the first traveling wheel 120 facing away from the body 110. The stop 300 is provided with an arc-shaped notch 310. When the stop 300 blocks the second tool 220, a portion of the first traveling wheel 120 is located within the arc-shaped notch 310, and the curvature of the arc-shaped notch 310 matches the curvature of the first traveling wheel 120.

[0023] The solution adopted in this embodiment is referred to Figure 2 As shown, with the stop 300 blocking the second blade 220, a portion of the first traveling wheel 120 is located within the arc-shaped notch 310. This allows the stop 300 to block a larger area, further improving the safety of the lawnmower.

[0024] In other embodiments, the stop 300 may not have the arc-shaped notch 310. In this case, when the stop 300 blocks the second cutter 220, the first traveling wheel 120 and the stop 300 are arranged side by side.

[0025] As one specific implementation method, refer to Figure 3 As shown, the direction of travel of the lawnmower is, for example, Figure 3 The direction indicated by arrow A in the diagram means that the lawnmower moves from right to left, with the stop 300 blocking the upper side of the second blade 220, and the stop 300 positioned between the first plane and the second blade 220. It should be noted that in this embodiment, "left," "right," and "up" refer to the lawnmower moving according to... Figure 3 The arrangement shown refers to what is meant when it is laid out as shown.

[0026] In a further embodiment, reference is made to... Figures 1 to 4 As shown, the lawnmower also includes a first drive source 410 and a connecting rod 420. The first drive source 410 is mounted on the body 110 and connected to the connecting rod 420, and is used to drive the connecting rod 420 to rotate. The connecting rod 420 and the stop 300 are slidably engaged along a first direction. The first direction is inclined relative to the height direction of the lawnmower to drive the stop 300 to rise and fall, and simultaneously drive the stop 300 away from or towards the first travel wheel 120. The first direction is, for example, Figure 2 The direction indicated by arrow B in the image represents the height direction of the lawnmower, for example... Figure 2 The direction indicated by the arrow C in the diagram.

[0027] In this embodiment, the first drive source 410 drives the stop 300 to rise and fall while simultaneously driving the stop 300 away from or closer to the first traveling wheel 120. In this way, there is no need to add other drive mechanisms to drive the stop 300 away from or closer to the first traveling wheel 120, thereby simplifying the structure of the lawnmower.

[0028] In actual use, the first drive source 410 drives the connecting rod 420 to rotate, the connecting rod 420 drives the stop 300 to rise and fall, and at the same time, the first drive source 410 drives the stop 300 to move horizontally, so that the stop 300 moves away from or closer to the first traveling wheel 120. Specifically, refer to Figure 2 As shown, during the process of the stop 300 rising, the stop 300 gradually moves away from the first traveling wheel 120, for example; conversely, during the process of the stop 300 falling, the stop 300 gradually moves closer to the first traveling wheel 120.

[0029] Optionally, the first drive source 410 is, for example, an electric motor. (See reference) Figure 2 As shown, the connecting rod 420 is provided with a guide post 422, and the stop 300 is provided with a first through groove 320. The length direction of the first through groove 320 is the same as the first direction. At least a portion of the guide post 422 is located in the first through groove 320 and slides with the first through groove 320 along the length direction of the first through groove 320.

[0030] Optionally, one end of the connecting rod 420 along its length is connected to the first drive source 410, and the other end is provided with a guide post 422.

[0031] In other embodiments, the lawnmower may also include a fourth drive source, in which case the lawnmower does not include, for example, the linkage 420, and the first drive source 410 is only used to drive the stop 300 to move up and down along the height direction of the lawnmower, and the fourth drive source is used to drive the stop 300 away from or near the first travel wheel 120, that is, to separately control the raising and lowering of the stop 300 and the movement of the stop 300 away from or near the first travel wheel 120.

[0032] In another embodiment, the body 110 is also provided with a mating part, and during the sliding of the connecting rod 420 and the stop 300 in the first direction, the mating part and the stop 300 are guided and mated.

[0033] In this embodiment, the cooperation between the mating part and the stop 300 makes the movement of the stop 300 more stable and improves the stability of the stop 300.

[0034] Optionally, refer to Figure 2 As shown, the mating part is, for example, a mating post, and the stop 300 is, for example, provided with a second through groove 330. At least a portion of the mating post is located within the second through groove 330 and is guided and mated with the second through groove 330 along the length direction of the second through groove 330. The second direction is, for example, Figure 2 The direction indicated by the arrow line D in the diagram.

[0035] Furthermore, the number of the second through groove 330 and the mating post is, for example, at least two, and they correspond one-to-one. Each mating post is guided and mated with the corresponding second through groove 330 to further improve the stability of the stop 300.

[0036] Further, refer to Figure 1 , Figure 2 as well as Figure 11 As shown, the wall of the second through groove 330 is provided with an abutment portion 340, and the lawnmower also includes a locking member 350. One end of the mating post passes through the second through groove 330 and is connected to the locking member 350. The locking member 350 contacts the abutment portion 340 to prevent the mating post from coming out of the second through groove 330. Specifically, the locking member 350 is threaded to the mating post, and the locking member 350 is, for example, a nut.

[0037] In other embodiments, the fuselage 110 may not have a mating part; in other words, there may be no guiding fit between the fuselage 110 and the stop 300.

[0038] In another embodiment, reference Figure 2 , Figure 5 and Figure 10 As shown, the bottom end of the fuselage 110 is provided with a stop portion 112, and the stop portion 112 extends in a direction away from the top end of the fuselage 110. Specifically, the stop portion 112 extends, for example, along... Figure 5 The arrow line E in the figure extends in the direction indicated. The stop 300 is located on the side of the abutment 112 away from the second cutter 220. A part of the stop 300 overlaps with the abutment 112 and contacts the abutment 112.

[0039] In this embodiment, due to the presence of the abutment part 112, there is a large mating area between the body 110 and the stop 300, thereby improving the stability of the stop 300 and its resistance to bending.

[0040] In other embodiments, the fuselage 110 may not have the abutment part 112.

[0041] In another embodiment, reference Figure 6 As shown, the lawnmower also includes a first position detector 510, which is located on the body 110. The first position detector 510 is used to detect whether the stop 300 has risen to the upper limit position, that is, the first position detector 510 is used to detect whether the stop 300 has risen to the highest position.

[0042] In this embodiment, the first position detector 510 can automatically detect whether the stop 300 has risen to its upper limit position, thereby saving manpower and improving the automation level of the lawnmower. Furthermore, the first position detector 510 has high detection accuracy, resulting in higher operating accuracy of the lawnmower.

[0043] Optionally, the first position detector 510 may include, for example, a first Hall element, referenced to... Figure 4 As shown, the connecting rod 420 is provided with a first magnetic element 421, and a first Hall element cooperates with the first magnetic element 421 to detect whether the connecting rod 420 has rotated to the required angle, thereby detecting whether the stop 300 has risen to the upper limit position. The first magnetic element 421 is, for example, a first magnet.

[0044] In other embodiments, the lawnmower may also exclude the first position detector 510.

[0045] In another embodiment, when the stop 300 is lowered to the lower limit position, the connecting rod 420 and the body 110 are engaged at the upper limit in the rotation direction of the connecting rod 420 to limit the stop 300 from continuing to descend.

[0046] In this embodiment, when the stop 300 is lowered to its lower limit position, that is, when the stop 300 is lowered to its lowest position, the connecting rod 420 and the body 110 are engaged at the upper limit in the rotation direction of the connecting rod 420, thereby restricting the connecting rod 420 from continuing to rotate, and thus restricting the stop 300 from continuing to descend. In this state, due to the restriction of the body 110, the stop 300 cannot continue to move down, thereby increasing the current of the first drive source 410. In this way, based on the change in the current of the first drive source 410, it can be determined whether the stop 300 has descended to its lowest position, thereby simplifying the structure of the lawnmower.

[0047] Optionally, the fuselage 110 may be provided with a blocking part 114, for example, see reference. Figure 4 As shown, when the stop 300 descends to its lower limit position, the connecting rod 420 contacts, for example, the blocking part 114 to limit the stop 300 from descending further. Additionally, Figure 4 The solid line drawing of link 420 indicates the state of link 420 when stop 300 descends to the lower limit position, while the dashed line drawing of link 420 indicates the state of link 420 when stop 300 rises to the upper limit position.

[0048] In other embodiments, when the stop 300 is lowered to the lower limit position, the connecting rod 420 and the body 110 may not have a limiting engagement relationship in the rotation direction of the connecting rod 420. In this case, the lawnmower may also include a third position detector, which is used to detect whether the stop 300 has been lowered to the lower limit position.

[0049] In one alternative embodiment, reference is made to... Figure 3 As shown, the fuselage 100 also includes a second traveling wheel 140. The structure of the second traveling wheel 140 is, for example, the same as that of the first traveling wheel 120, and the two are coaxially arranged. The side of the second traveling wheel 140 facing away from the fuselage 110 is the second side 141 of the fuselage 100. (Refer to...) Figure 3 As shown, the first blade 210 is located between the first side 121 and the second side 141, and the distance between the first blade 210 and the first side 121 and the second side 141 is equal. In this layout, the first blade 210 is positioned in the middle of the first traveling wheel 120 and the second traveling wheel 140. This allows the first blade 210 to cut the area between the first traveling wheel 120 and the second traveling wheel 140 more evenly, thereby improving the mowing effect. Furthermore, this layout makes the overall force on the lawnmower more even, thus improving the stability of the lawnmower.

[0050] Optionally, the first travel wheel 120 and the second travel wheel 140 are both drive wheels, for example, used to drive the lawnmower.

[0051] Further, refer to Figure 3 As shown, the body 100 also includes a third traveling wheel 150 and a fourth traveling wheel 160. Both the third traveling wheel 150 and the fourth traveling wheel 160 are omnidirectional wheels, and both play an auxiliary support role. While the first traveling wheel 120 and the second traveling wheel 140 drive the body 110 to move, they also drive the third traveling wheel 150 and the fourth traveling wheel 160 to move.

[0052] In another embodiment, the second blade 220 is mounted on the body 100 in a height-adjustable manner. With this configuration, the operator can adjust the height of the second blade 220 according to changes in terrain, which also allows the lawnmower to adapt well to different terrains. Furthermore, when the second blade 220 is not needed for cutting, raising it reduces the space occupied by the lawnmower, and when the ground 810 is uneven, raising the second blade 220 helps the lawnmower pass more smoothly over the raised areas of the ground 810.

[0053] Optionally, the machine body 100 may include, for example, the machine frame 110 mentioned above, and the second cutter 220 may be mounted on the machine frame 110 in a lifting manner.

[0054] In other embodiments, the second cutter 220 may also be fixedly mounted on the body 100, that is, the height of the second cutter 220 is not adjustable.

[0055] In a further embodiment, reference is made to... Figure 1 as well as Figures 5 to 8As shown, the lawnmower also includes a base 230, a second drive source 610, and a screw 620. A second blade 220 is mounted on the base 230, which slides along the height direction of the lawnmower with the machine body 100. Both the second drive source 610 and the screw 620 are mounted on the machine body 100. The second drive source 610 is connected to the screw 620 and drives the screw 620 to rotate. The screw 620 is threadedly engaged with the base 230 to drive the base 230 and the second blade 220 to rise and fall. Optionally, the second drive source 610 may be, for example, a motor, and the axial direction of the screw 620 may be the same as the height direction of the lawnmower.

[0056] In actual use, the screw 620 is fixed in its own axial position and only rotates around its own axis. The second drive source 610 drives the screw 620 to rotate, thereby driving the seat 230 and the second tool 220 to rise and fall.

[0057] In this embodiment, the screw 620 is threadedly engaged with the base 230 to drive the second tool 220 to rise and fall. The threaded engagement has high precision, thus allowing for more accurate control of the rise and fall of the second tool 220.

[0058] Optionally, refer to Figure 7 As shown, the driving end of the second driving source 610 is provided with a first gear 611, and the screw 620 is provided with a second gear 621. The first gear 611 and the second gear 621 mesh with each other, and the driving end of the second driving source 610 drives the screw 620 to rotate in sequence through the first gear 611 and the second gear 621.

[0059] In other embodiments, the second drive source 610 may also drive the seat 230 and the second tool 220 to rise and fall in other ways. Specifically, the second drive source 610 may drive the seat 230 and the second tool 220 to rise and fall, for example, by means of belt drive.

[0060] In a further embodiment, reference is made to... Figure 8 and Figure 10 As shown, the body 100 is provided with a limiting part 113. When the second blade 220 is lowered to the lowest position, the base 230 and the limiting part 113 are engaged in a limiting cooperation in the height direction of the lawnmower to restrict the second blade 220 from continuing to descend.

[0061] In this embodiment, when the second blade 220 descends to its lowest position, the seat 230 contacts the limiting part 113. The limiting part 113 restricts the seat 230 from continuing to descend, thereby restricting the second blade 220 from continuing to descend. In this state, due to the restriction of the limiting part 113, the second blade 220 cannot continue to move down, thereby increasing the current of the second drive source 610. In this way, based on the change in the current of the second drive source 610, it can be determined whether the second blade 220 has descended to its lowest position, thereby simplifying the structure of the lawnmower.

[0062] Optionally, refer to Figure 10 As shown, the limiting part 113 is connected to the abutting part 112 mentioned above, and references... Figure 10 As shown, the overall structure formed by the limiting part 113 and the abutting part 112 is roughly inverted L-shaped.

[0063] Optionally, refer to Figures 8 to 10 As shown, the machine body 100 includes, for example, the body 110 mentioned above. The bottom end of the body 110 is provided with an opening 111. The limiting part 113 covers the opening 111 and is provided with a clearance hole 1131. A part of the base 230 passes through the clearance hole 1131 and is connected to the second cutter 220.

[0064] In other embodiments, when the second blade 220 is lowered to the lowest position, the base 230 and the limiting part 113 may not have a limiting engagement relationship in the height direction of the lawnmower. In this case, the lawnmower may also include a fourth position detector, which is used to detect whether the second blade 220 has been lowered to the lowest position.

[0065] In a further embodiment, the lawnmower also includes a second position detector, which is disposed on the body 100 and is used to detect whether the second blade 220 has risen to the highest position.

[0066] In this embodiment, the second position detector can automatically determine whether the second blade 220 has risen to its highest position, thereby saving manpower and improving the automation level of the lawnmower. Furthermore, the second position detector has high detection accuracy, resulting in higher operating accuracy for the lawnmower.

[0067] Optionally, the second position detector may include, for example, a second Hall element, referenced to... Figure 7 As shown, the seat 230 mentioned above is provided with a second magnetic element 233, and the second Hall element cooperates with the second magnetic element 233 to detect whether the seat 230 has risen to a preset position, thereby detecting whether the second cutter 220 has risen to the highest position. The second magnetic element 233 is, for example, a second magnet.

[0068] In other embodiments, the lawnmower may also exclude the second position detector.

[0069] In another embodiment, reference Figure 12As shown, the base 230 includes a cylinder, and the lawnmower also includes a third drive source 234. The third drive source 234 is located inside the cylinder and is connected to the second blade 220 for transmission. The third drive source 234 is used to drive the second blade 220 to rotate. The third drive source 234 is, for example, a motor. The side wall of the cylinder is provided with a first protrusion 231 and a second protrusion 232. The first protrusion 231 is slidably engaged with the body 100 along the height direction of the lawnmower, and the second protrusion 232 is threadedly engaged with the screw 620.

[0070] In this embodiment, the first protrusion 231 provides a basis for the fit between the cylinder and the body 100, reducing the difficulty of their fit. Similarly, the second protrusion 232 provides a basis for the fit between the cylinder and the screw 620, reducing the difficulty of their fit.

[0071] Optionally, refer to Figure 12 As shown, the number of first protrusions 231 is, for example, two. The two first protrusions 231 are arranged symmetrically about the second plane, and the axis of the cylinder is located in the second plane so that the cylinder is subjected to more uniform force.

[0072] Optionally, the second magnet mentioned above may be located at the top of the cylinder, and the first protrusion 231 and the second protrusion 232 may both be located at the upper end of the cylinder.

[0073] Optionally, the second magnet mentioned above may be located at the top of the cylinder, and the first protrusion 231 and the second protrusion 232 may both be located at the upper end of the cylinder. Additionally, refer to... Figure 8 and Figure 12 As shown, the first protrusion 231 is provided with a relief groove 2311 for example. A portion of the limiting part 113 is located in the relief groove 2311 and is engaged with the bottom of the relief groove 2311 in the height direction of the lawnmower to limit the seat 230 and the second blade 220 from continuing to descend.

[0074] Optionally, refer to Figure 1 and Figure 6 As shown, the body 110 is provided with a guide seat 130, and the guide seat 130 is provided with a guide groove 131. The first protrusion 231 and the guide groove 131 slide in cooperation along the height direction of the lawnmower.

[0075] In actual use, the third drive source 234 and the second cutter 220 rise and fall with the cylinder. The third drive source 234 drives the second cutter 220 to rotate, thereby driving the second cutter 220 to perform cutting operations.

[0076] It should be noted that the first blade 210, for example, serves as the main blade and undertakes the primary mowing work. The lawnmower may include a fourth drive source, which drives the first blade 210 to rotate, thereby enabling the first blade 210 to perform the mowing operation. The second blade 220 serves as an auxiliary blade. When trimming the edges of the trimming area, the second blade 220 is activated, for example, to reduce missed grass.

[0077] In other embodiments, the sidewall of the cylinder may not have the first protrusion 231 and the second protrusion 232.

[0078] In one optional embodiment, at least one of the first cutter 210 and the second cutter 220 includes a cutter head and a blade, and the number of blades is at least two. Each blade is evenly arranged along the circumference of the cutter head and is connected to the cutter head.

[0079] In actual use, the cutter head rotates, which in turn drives each blade to rotate, thereby achieving the cutting operation.

[0080] In another embodiment, reference Figure 2 As shown, both the stop 300 and the second blade 220 are vertically mounted on the body 100. The lawnmower also includes a circuit board, a vision module 700, a first drive source 410, and a second drive source 610. The circuit board, vision module 700, first drive source 410, and second drive source 610 are all located on the body 100. The vision module 700 is used to acquire external image information. The first drive source 410 is used to drive the stop 300 to move up and down, and the second drive source 610 is used to drive the second blade 220 to move up and down. The vision module 700, first drive source 410, and second drive source 610 are all electrically connected to the circuit board. The circuit board can control the operation of the first drive source 410 and the second drive source 610 based on the external image information. Optionally, the vision module 700 may be, for example, a camera.

[0081] In this embodiment, the stop 300 is driven to rise and fall by the first drive source 410, and the second cutter 220 is driven to rise and fall by the second drive source 610. In this way, the rising and falling of the stop 300 and the second cutter 220 are independent of each other, and the rising and falling flexibility of the stop 300 and the second cutter 220 is good.

[0082] In actual use, the circuit board receives external image information collected by the vision module 700. When it determines, based on this information, that the lawnmower needs to cut the edge of the trimming area, the circuit board controls the first drive source 410 to operate, thereby controlling the stop 300 to descend. When the stop 300 descends to the lower limit position mentioned above, the circuit board controls the second drive source 610 to operate, causing the second blade 220 to descend to the lowest position mentioned above, thus enabling the second blade 220 to perform the mowing operation. When the circuit board determines, based on the external image information, that the second blade 220 is not needed for mowing, the circuit board controls the second drive source 610 to operate, causing the second blade 220 to rise. When the second blade 220 rises to the highest position mentioned above, the circuit board controls the first drive source 410 to operate, causing the stop 300 to rise to the upper limit position mentioned above. Therefore, in the lawnmower provided in this embodiment, the stop 300 and the second blade 220 can be raised and lowered sequentially according to the corresponding requirements, which helps to improve the safety of using the lawnmower.

[0083] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A lawnmower characterised in that, include: The body (100) has a first side (121) at least a portion of which lies in a first plane and is capable of contacting an obstacle; The first cutting tool (210) and the second cutting tool (220) are both installed at the bottom end of the body (100). The distance between the second cutting tool (220) and the first plane is less than the distance between the first cutting tool (210) and the first plane.

2. The lawnmower as claimed in claim 1, characterized in that The lawnmower also includes a stop (300) which is mounted on the body (100) and can block the side of the second blade (220) facing the first plane.

3. The lawnmower as claimed in claim 2, characterized in that The stop (300) is vertically mounted on the body (100).

4. The lawnmower according to claim 3, characterized in that, The machine body (100) includes a body (110) and a first traveling wheel (120) rotatably mounted on the body (110). The first traveling wheel (120) is located on the side of the body (110) facing the first plane. The first side (121) includes the side of the first traveling wheel (120) facing away from the body (110). The stop (300) is provided with an arc-shaped notch (310). When the stop (300) blocks the second cutter (220), a part of the first traveling wheel (120) is located in the arc-shaped notch (310), and the curvature of the arc-shaped notch (310) is adapted to the curvature of the first traveling wheel (120).

5. The lawnmower according to claim 4, characterized in that, The lawnmower also includes a first drive source (410) and a connecting rod (420). The first drive source (410) is mounted on the body (110). The first drive source (410) is connected to the connecting rod (420) and is used to drive the connecting rod (420) to rotate. The connecting rod (420) and the stop (300) are slidably engaged in a first direction. The first direction is inclined relative to the height direction of the lawnmower to drive the stop (300) to rise and fall, and at the same time drive the stop (300) away from or close to the first walking wheel (120).

6. The lawnmower according to claim 5, characterized in that, The fuselage (110) is also provided with a mating part. During the process of the connecting rod (420) and the stop (300) sliding along the first direction, the mating part and the stop (300) are guided and mated. And / or, the bottom end of the body (110) is provided with an abutment (112), and the abutment (112) extends in a direction away from the top end of the body (110), the stop (300) is located on the side of the abutment (112) away from the second cutter (220), a part of the stop (300) overlaps with the abutment (112) and contacts the abutment (112); And / or, the lawnmower further includes a first position detector (510), which is disposed on the body (110) and is used to detect whether the stop (300) has risen to the upper limit position; And / or, when the stop (300) is lowered to the lower limit position, the connecting rod (420) and the body (110) are engaged at the upper limit in the rotation direction of the connecting rod (420) to limit the stop (300) from continuing to descend.

7. The lawnmower according to claim 1, characterized in that, The second cutting tool (220) is vertically mounted on the machine body (100).

8. The lawnmower according to claim 7, characterized in that, The lawnmower also includes a base (230), a second drive source (610), and a screw (620). The second blade (220) is mounted on the base (230). The base (230) and the machine body (100) are slidably engaged along the height direction of the lawnmower. The second drive source (610) and the screw (620) are both mounted on the machine body (100). The second drive source (610) is connected to the screw (620) and is used to drive the screw (620) to rotate. The screw (620) is threadedly engaged with the base (230) to drive the base (230) and the second blade (220) to rise and fall.

9. The lawnmower according to claim 8, characterized in that, The body (100) is provided with a limiting part (113). When the second blade (220) is lowered to the lowest position, the seat (230) and the limiting part (113) are engaged in a limiting cooperation in the height direction of the lawnmower to restrict the second blade (220) from continuing to descend. And / or, the lawnmower further includes a second position detector, which is disposed on the body (100) and is used to detect whether the second blade (220) has risen to the highest position; And / or, the base (230) includes a cylinder, and the lawnmower also includes a third drive source (234), which is located inside the cylinder and is connected to the second blade (220) in a transmission manner. The third drive source (234) is used to drive the second blade (220) to rotate. The side wall of the cylinder is provided with a first protrusion (231) and a second protrusion (232). The first protrusion (231) is slidably engaged with the body (100) along the height direction of the lawnmower, and the second protrusion (232) is threadedly engaged with the screw (620).

10. The lawnmower according to claim 2, characterized in that, The stop (300) and the second blade (220) can be mounted vertically on the body (100). The lawnmower also includes a circuit board, a vision module (700), a first drive source (410), and a second drive source (610). The circuit board, the vision module (700), the first drive source (410), and the second drive source (610) are all located on the body (100). The vision module (700) is used to collect external image information. The first drive source (410) is used to drive the stop (300) to move up and down. The second drive source (610) is used to drive the second blade (220) to move up and down. The vision module (700), the first drive source (410), and the second drive source (610) are all electrically connected to the circuit board. The circuit board can control the first drive source (410) and the second drive source (610) to work according to the external image information.

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