Lawn mower

Abstract

The utility model belongs to the electric appliance technical field, concretely relates to a mower. The mower includes: the body; Main cutting unit, set up in the bottom of body; Auxiliary cutting unit, detachably installed in one side of body; First joint, be located in the body; Second joint, be located in the auxiliary cutting unit, and can detachably with first joint connection, to realize the electric connection of body and auxiliary cutting unit; First foolproof structure, be located in first joint; Second foolproof structure, be located in second joint, and with first foolproof structure cooperation. The mower of the application can guarantee the accuracy of auxiliary cutting unit installation.

Description

Technical Field

[0001] This application belongs to the field of electrical technology, specifically relating to a lawnmower. Background Technology

[0002] Lawn mowers are widely used in home lawns, parks, and golf courses, improving efficiency and reducing labor costs, making them a core tool for modern landscaping maintenance. Lawn mowers typically use a main cutting disc mounted centrally at the bottom of the machine to trim large areas of lawn.

[0003] To increase the cutting range of the cutting machine, an auxiliary cutting disc is installed at the bottom of the machine body, and the machine body controls the movement of the auxiliary cutting disc. However, in related technologies, it is not easy to achieve an electrical connection between the auxiliary cutting disc and the machine body. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a lawnmower, which aims to at least partially solve the technical problem of the difficulty in achieving electrical connection between the auxiliary cutting disc and the machine body.

[0005] The technical solution of this utility model is as follows: A lawnmower includes: a body; a main cutting unit disposed at the bottom of the body; an auxiliary cutting unit detachably mounted on one side of the body; a first connector disposed on the body; a second connector disposed on the auxiliary cutting unit and detachably connected to the first connector to achieve electrical connection between the body and the auxiliary cutting unit; a first foolproof structure disposed on the first connector; and a second foolproof structure disposed on the second connector and cooperating with the first foolproof structure.

[0006] In some embodiments, one of the first and second foolproof structures has an embedding part and the other has an embedding groove, with the embedding part being embedded in the embedding groove.

[0007] In some embodiments, the embedding portion includes a first anti-mistake member and a second anti-mistake member connected to the first anti-mistake member, the embedding groove includes a first mounting groove and a second mounting groove communicating with the first mounting groove, the first anti-mistake member is embedded in the first mounting groove to form a first assembly structure, and the second anti-mistake member is embedded in the second mounting groove to form a second assembly structure; wherein the area of ​​the first assembly structure is different from the area of ​​the second assembly structure, and / or the shape of the first assembly structure is different from the shape of the second assembly structure.

[0008] In some embodiments, the first error-proofing component includes a first error-proofing part and a second error-proofing part disposed at an angle to the first error-proofing part, the included angle between the first error-proofing part and the second error-proofing part being a first included angle; the second error-proofing component includes a third error-proofing part and a fourth error-proofing part disposed at an angle to the third error-proofing part, the included angle between the third error-proofing part and the fourth error-proofing part being a second included angle; the first included angle is greater than the second included angle.

[0009] In some embodiments, the first mounting slot includes a first sub-mounting slot and a second sub-mounting slot arranged at an angle to the first sub-mounting slot, the included angle between the first sub-mounting slot and the second sub-mounting slot being a third included angle; the second mounting slot includes a third sub-mounting slot and a fourth sub-mounting slot arranged at an angle to the third sub-mounting slot, the included angle between the third sub-mounting slot and the fourth sub-mounting slot being a fourth included angle; wherein, the third included angle is greater than the fourth included angle.

[0010] In some embodiments, the first error-proofing component includes a first error-proofing part and a second error-proofing part arranged at an angle to the first error-proofing part, with the included angle between the first error-proofing part and the second error-proofing part being a first included angle. The second error-proofing component includes a third error-proofing part and a fourth error-proofing part arranged at an angle to the third error-proofing part, with the included angle between the third error-proofing part and the fourth error-proofing part being a second included angle. The first mounting groove includes a first sub-mounting groove and a second sub-mounting groove arranged at an angle to the first sub-mounting groove, with the included angle between the first sub-mounting groove and the second sub-mounting groove being a third included angle. The second mounting groove includes a third sub-mounting groove and a fourth sub-mounting groove arranged at an angle to the third sub-mounting groove, with the included angle between the third sub-mounting groove and the fourth sub-mounting groove being a fourth included angle. Wherein, the first included angle is greater than the second included angle, the third included angle is greater than the fourth included angle, the first included angle matches the third included angle, and the second included angle matches the fourth included angle.

[0011] In some embodiments, the embedded part further includes a connector, the opposite sides of which are connected to the first anti-mistake component and the second anti-mistake component respectively, and the embedded groove further includes a connecting groove, the opposite sides of which are connected to the first mounting groove and the second mounting groove respectively; wherein, the connector is embedded in the connecting groove.

[0012] In some implementations, one of the first connector and the second connector is provided with a plurality of inserts, and the other is provided with a plurality of mating holes. The plurality of inserts correspond one-to-one with the plurality of mating holes, and the inserts are inserted into the corresponding mating holes to realize the electrical connection between the machine body and the auxiliary cutting unit.

[0013] In some implementations, the plurality of inserts and the plurality of mating holes are staggered from the first foolproof structure and the second foolproof structure.

[0014] In some implementations, the machine body is provided with a first mounting member, and the auxiliary cutting unit is provided with a second mounting member, the first mounting member and the second mounting member cooperating to form a receiving cavity for accommodating the first connector and the second connector.

[0015] In some embodiments, the lawnmower further includes a seal disposed between the first mounting member and the second mounting member, and in contact with the first mounting member and the second mounting member.

[0016] In some embodiments, one of the first mounting member and the second mounting member is provided with an annular groove, and the other is provided with an annular member, the annular member being embedded in the annular groove, and the sealing member being provided in the annular groove and abutting against the annular member.

[0017] In some embodiments, the machine body has a first mounting hole, and the auxiliary cutting unit has a locking member connected to the first mounting hole.

[0018] In some implementations, the auxiliary cutting unit is provided with a second mounting hole, and the locking member is connected to the second mounting hole.

[0019] In some implementations, the auxiliary cutting unit is located on the right side of the mower body along the forward direction of the mower; wherein, when the mower operates on the boundary area of ​​the work area, the mower moves counterclockwise along the boundary area.

[0020] In some implementations, the lawnmower advances two circles along the boundary area, and when the lawnmower advances along the outer circle, both the first cutter disc of the main cutting unit and the second cutter disc of the auxiliary cutting unit rotate.

[0021] In some implementations, as the lawnmower moves along the innermost circle, the first blade of the main cutting unit rotates while the second blade of the auxiliary cutting unit does not rotate.

[0022] In some implementations, the second cutter head of the auxiliary cutting unit rotates counterclockwise.

[0023] In some implementations, when the width of the boundary region is greater than or equal to the main working range of the main cutting unit, the first cutter head of the main cutting unit rotates and the second cutter head of the auxiliary cutting unit also rotates; wherein, the total working range is the sum of the main working range of the main cutting unit and the auxiliary working range of the auxiliary cutting unit.

[0024] In some implementations, when the width of the boundary region is less than the main working range of the main cutting unit, the first cutter head of the main cutting unit rotates while the second cutter head of the auxiliary cutting unit does not rotate.

[0025] The beneficial effects of this utility model include at least the following: Since the main cutting unit is located at the bottom of the machine body, it can be supported by the machine body. Since the auxiliary cutting unit is detachably installed on one side of the machine body, it can be installed on the machine body when needed and removed from the machine body when not needed. This allows for easy disassembly when maintenance or replacement is required, reducing the difficulty and time of maintenance work and improving work efficiency.

[0026] Since the first connector is located on the machine body and the second connector is located on the auxiliary cutting unit and is detachably connected to the first connector to achieve electrical connection between the machine body and the auxiliary cutting unit, when installing the auxiliary cutting unit on the machine body, connecting the first and second connectors will achieve electrical connection between the machine body and the auxiliary cutting unit, enabling the auxiliary cutting unit to transmit signals with the machine body. No cables are required, i.e., no wiring or cabling is needed, simplifying the installation process, reducing installation steps and time, and improving work efficiency. When it is necessary to replace or maintain the auxiliary cutting unit, there is no need to first untangle the complex cable constraints as with cable connections. Simply separate the first and second connectors to remove the auxiliary cutting unit from the machine body for replacement or repair. After completion, the first and second connectors can be reconnected for reuse. The entire disassembly and assembly process is quick and convenient, saving a lot of time and labor costs.

[0027] Since the first anti-mistake structure is located on the first connector and the second anti-mistake structure is located on the second connector and cooperates with the first anti-mistake structure, the cooperation between the first and second anti-mistake structures is such that the first connector can be successfully connected to the second connector only when the anti-mistake features of the first and second anti-mistake structures are completely matched. This achieves the correct docking of the first and second connectors, effectively avoiding the occurrence of incorrect connections, reducing the probability of electrical faults, and ensuring the accuracy and reliability of electrical connections. The cooperation between the first and second anti-mistake structures can effectively prevent incorrect connections, improve the safety of the equipment, and at the same time, prevent the auxiliary cutting unit from being installed in the wrong direction on the machine body, ensuring the accuracy of the installation of the auxiliary cutting unit.

[0028] Because the cooperation between the first and second anti-mistake structures can effectively prevent incorrect connection of the first and second connectors, it can reduce errors and rework during the installation of the first and second connectors, avoid incorrect connection, make the installation process smoother, increase the probability of successful installation on the first try, and thus further save time and cost and improve production efficiency.

[0029] Due to the cooperation of the first and second anti-misalignment structures, they function as a positioning tool, helping operators quickly and accurately align the first and second connectors. When installing the auxiliary cutting unit, operators do not need to spend a lot of time carefully adjusting the position of the first or second connector. They only need to roughly align the first and second anti-misalignment structures, and then operate the auxiliary cutting unit. The first and second anti-misalignment structures will automatically guide the second connector to the correct connection position, which not only improves installation accuracy but also reduces poor contact problems caused by loose connections, ensuring the normal operation of the equipment.

[0030] When installing the auxiliary cutting unit onto the machine body, simply follow the guidance of the first and second anti-foolproof structures. Without complicated judgments or adjustments, the connection between the second connector and the first connector can be completed quickly, further simplifying the installation process, shortening the installation time, and improving work efficiency. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying 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.

[0032] Figure 1 Top view of a lawnmower in some embodiments; Figure 2 for Figure 1 A bottom view of a lawnmower; Figure 3 for Figure 1 A cross-sectional view of a lawnmower along the AA direction; Figure 4 for Figure 3 A schematic diagram of the connection between the first and second connectors of a lawnmower; Figure 5 for Figure 4 A schematic diagram of the first joint of a lawnmower; Figure 6 for Figure 4 A schematic diagram of the second connector of a lawnmower; Figure 7 for Figure 5 A bottom view of the first joint of a lawnmower; Figure 8 for Figure 7 A schematic diagram showing the arrangement of the first and second included angles; Figure 9 for Figure 6 Top view of the second joint; Figure 10 for Figure 9 A schematic diagram showing the arrangement of the first and second included angles; Figure 11 for Figure 4 CC-direction sectional view of the first and second joints; Figure 12 for Figure 3 Enlarged view of point B in the middle; Figure 13 for Figure 1 A schematic diagram showing the connection between the auxiliary cutting unit and the main body of a lawnmower; Figure 14 for Figure 13 A schematic diagram of the locking mechanism connection; Figure 15 for Figure 13 A schematic diagram of the locking mechanism arrangement of the auxiliary cutting unit in a lawnmower; Figure 16 for Figure 16 A schematic diagram showing the fit between the locking mechanism and the second mounting hole of the lawnmower; Figure 17 for Figure 1 A diagram illustrating the operation of a lawnmower; Figure 18 for Figure 17 A top view of a lawnmower; Figure 19 for Figure 17 A schematic diagram showing the arrangement of the main cutting unit and auxiliary cutting unit of a lawnmower.

[0033] In the attached image: Body 10, first mounting part 11, annular groove 111, first mounting hole 12; Main cutting unit 20, first cutter head 21; Auxiliary cutting unit 30, second mounting part 31, ring part 311, locking part 32, first connecting part 321, second connecting part 322, limiting part 323, second mounting hole 33, second cutter head 34; First connector 40, insert 41; Second connector 50, mating hole 51; First foolproof structure 60, embedded part 61, first foolproof component 611, first foolproof part 6111, second foolproof part 6112, second foolproof component 612, third foolproof part 6121, fourth foolproof part 6122, connector 613. Second foolproof structure 70, embedded groove 71, first mounting groove 711, first sub-mounting groove 7111, second sub-mounting groove 7112, second mounting groove 712, third sub-mounting groove 7121, fourth sub-mounting groove 7122, connecting groove 713; Seal 80; Work area 90, boundary area 91. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] It should be noted that all directional indications in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0038] Traditionally, cables are used to connect the machine body and the auxiliary cutting disc. Operators need to spend time tidying up the cables, finding suitable connector locations, and carefully avoiding cable tangling or incorrect connections. Related technologies use butt joints to achieve electrical connection between the machine body and the auxiliary cutting disc. However, during installation, operators may connect the butt joints in the wrong direction or position, leading to electrical connection failure or even damage to the joints or internal circuitry. Incorrect connection may require disassembly and reconnection, potentially damaging the equipment and resulting in longer downtime and higher maintenance costs.

[0039] Based on these technical problems, this application provides a lawnmower that aims to solve the technical problem of difficulty in achieving electrical connection between the auxiliary cutting disc and the machine body.

[0040] The design concept of this application is to set a first anti-mistake structure and a second anti-mistake structure on the first connector and the second connector respectively. Through the cooperation of the first anti-mistake structure and the second anti-mistake structure, the first connector and the second connector can be correctly connected, thereby reducing the probability of electrical faults and ensuring the accuracy and reliability of electrical connections.

[0041] Specific technical solutions will now be described in detail with reference to the accompanying drawings, which are not necessarily drawn to scale. Similar or identical reference numerals may be used to designate the same or similar parts in different figures. The use of similar or identical reference numerals in different figures does not mean that all figures including similar or identical reference numerals constitute a single or the same embodiment. The accompanying drawings illustrate the various embodiments discussed in this application in a generalized, illustrative, and not restrictive manner.

[0042] Figure 1 Top view of a lawnmower in some embodiments; Figure 2 for Figure 1 A bottom view of a lawnmower; Figure 3 for Figure 1 A cross-sectional view of a lawnmower along the AA direction; Figure 4 for Figure 3 A schematic diagram of the connection between the first and second connectors of a lawnmower; Figure 5 for Figure 4 A schematic diagram of the first joint of a lawnmower; Figure 6 for Figure 4 A schematic diagram of the second connector of a lawnmower. (Combined with...) Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6The lawnmower of this embodiment includes: a body 10, a main cutting unit 20, an auxiliary cutting unit 30, a first connector 40, a second connector 50, a first foolproof structure 60, and a second foolproof structure 70. The main cutting unit 20 is located at the bottom of the body 10. The auxiliary cutting unit 30 is detachably mounted on one side of the body 10. The first connector 40 is located on the body 10. The second connector 50 is located on the auxiliary cutting unit 30 and is detachably connected to the first connector 40 to achieve electrical connection between the body 10 and the auxiliary cutting unit 30. The first foolproof structure 60 is located on the first connector 40. The second foolproof structure 70 is located on the second connector 50 and cooperates with the first foolproof structure 60.

[0043] Since the main cutting unit 20 is located at the bottom of the machine body 10, it can be supported by the machine body 10. Since the auxiliary cutting unit 30 is detachably installed on one side of the machine body 10, it can be installed on the machine body 10 when needed and removed from the machine body 10 when not needed. This allows for easy disassembly when maintenance or replacement is required, reducing the difficulty and time of maintenance work and improving work efficiency.

[0044] Since the first connector 40 is located on the machine body 10 and the second connector 50 is located on the auxiliary cutting unit 30 and is detachably connected to the first connector 40 to achieve electrical connection between the machine body 10 and the auxiliary cutting unit 30, when the auxiliary cutting unit 30 is installed on the machine body 10, connecting the first connector 40 and the second connector 50 can achieve electrical connection between the machine body 10 and the auxiliary cutting unit 30, enabling the auxiliary cutting unit 30 to transmit signals with the machine body 10 without the need for cables, i.e., no wiring or routing is required. This simplifies the installation process, reduces installation steps and time, and improves work efficiency. When the auxiliary cutting unit 30 needs to be replaced or maintained, there is no need to first untangle the complex cable constraints as with cable connections. Simply separate the first connector 40 and the second connector 50 to remove the auxiliary cutting unit 30 from the machine body 10 for replacement or repair. After completion, the first connector 40 and the second connector 50 can be reconnected for reuse. The entire disassembly and assembly process is quick and convenient, saving a lot of time and labor costs.

[0045] Since the first anti-mistake structure 60 is located at the first connector 40 and the second anti-mistake structure 70 is located at the second connector 50 and cooperates with the first anti-mistake structure 60, the cooperation between the first anti-mistake structure 60 and the second anti-mistake structure 70 is such that only when the anti-mistake features of the first anti-mistake structure 60 and the second anti-mistake structure 70 are fully matched can the first connector 40 be successfully connected to the second connector 50, thus achieving correct docking of the first connector 40 and the second connector 50. This effectively avoids the occurrence of incorrect connections, thereby reducing the probability of electrical faults and ensuring the accuracy and reliability of electrical connections. The cooperation between the first anti-mistake structure 60 and the second anti-mistake structure 70 can effectively prevent incorrect connections and improve the safety of the equipment. At the same time, it can also avoid incorrect installation direction of the auxiliary cutting unit 30 on the machine body 10, ensuring the accuracy of the installation of the auxiliary cutting unit 30.

[0046] Because the cooperation between the first anti-mistake structure 60 and the second anti-mistake structure 70 can effectively prevent the incorrect connection of the first connector 40 and the second connector 50, it can reduce the errors and rework that occur during the installation of the first connector 40 and the second connector 50, avoid the occurrence of incorrect connections, make the installation process smoother, increase the probability of successful installation on the first attempt, and thus further save time and costs and improve production efficiency.

[0047] Due to the cooperation of the first and second anti-misalignment structures 60 and 70, they function as positioning devices, helping operators quickly and accurately align the first connector 40 and the second connector 50. When installing the auxiliary cutting unit 30, operators do not need to spend a lot of time carefully adjusting the position of the first connector 40 or the second connector 50. They only need to roughly align the first and second anti-misalignment structures 60 and 70, and then operate the auxiliary cutting unit 30. The first and second anti-misalignment structures 60 and 70 will automatically guide the second connector 50 to the correct connection position, improving installation accuracy and reducing contact problems caused by loose connections, thus ensuring the normal operation of the equipment.

[0048] When installing the auxiliary cutting unit 30 onto the machine body 10, the connection between the second connector 50 and the first connector 40 can be quickly completed by following the guidance of the first anti-foolproof structure 60 and the second anti-foolproof joint, without the need for complicated judgment and adjustment. This further simplifies the installation process, shortens the installation time, and improves work efficiency.

[0049] In some embodiments, the machine body 10 may further include a control mechanism (not shown in the figure), which can control the working state of the auxiliary cutting unit 30. The auxiliary cutting unit 30 may further include a drive board (not shown in the figure), which is electrically connected to the second connector 50. That is, the control mechanism is electrically connected to the first connector 40, and the first connector 40 is electrically connected to the drive board through the second connector 50, so as to realize signal transmission between the control mechanism and the auxiliary cutting unit 30. For example, the control mechanism is electrically connected to the first connector 40 through a first cable (not shown in the figure) to facilitate the arrangement of the control mechanism within the machine body 10. The drive board of the auxiliary cutting unit 30 can be electrically connected to the second connector 50 through a second cable (not shown in the figure) to facilitate the arrangement of the drive board within the auxiliary cutting unit 30. The control mechanism can supply power to the drive board and communicate through the first cable, the first connector 40, the second connector 50, and the second cable to control the auxiliary cutting unit 30.

[0050] In some embodiments, the auxiliary cutting unit 30 may be mounted on the bottom side of the machine body 10 to facilitate its operation. Of course, in other embodiments, the auxiliary cutting unit 30 may be mounted on the side of the machine body 10 (i.e., the circumferential surface of the machine body 10).

[0051] Figure 7 for Figure 5 A bottom view of the first joint of a lawnmower; Figure 8 for Figure 7 A schematic diagram showing the arrangement of the first and second included angles. (Combined with...) Figure 7 and Figure 8 In some embodiments, in order to achieve foolproofing, one of the first foolproofing structure 60 and the second foolproofing structure 70 is provided with an embedding part 61 and the other is provided with an embedding groove 71, with the embedding part 61 embedded in the embedding groove 71.

[0052] During the docking of the first connector 40 and the second connector 50, the insert 61 can only mate with the corresponding shape and size of the insert groove 71, which physically restricts the assembly direction and position of the parts. Assembly can only be successfully completed when the insert 61 is accurately aligned with the insert groove 71; otherwise, it cannot be installed correctly. This effectively avoids incorrect assembly due to human error or improper operation, improving assembly accuracy and success rate. Furthermore, the mating of the insert 61 with the insert groove 71 provides assembly personnel with clear assembly guidance. They do not need to spend a lot of time and effort judging the correct assembly method; they only need to align the insert 61 with the insert groove 71 and insert it, simplifying the assembly process, reducing trial and error, and significantly improving assembly efficiency.

[0053] In some embodiments, to achieve foolproofing, the embedding part 61 includes a first foolproofing member 611 and a second foolproofing member 612 connected to the first foolproofing member 611. The embedding groove 71 includes a first mounting groove 711 and a second mounting groove 712 communicating with the first mounting groove 711. The first foolproofing member 611 is embedded in the first mounting groove 711, and the second foolproofing member 612 is embedded in the second mounting groove 712. The first foolproofing member 611 is assembled with the first mounting groove 711 to form a first assembly structure, and the second foolproofing member 612 is assembled with the second mounting groove 712 to form a second assembly structure. The area of ​​the first assembly structure is different from the area of ​​the second assembly structure, and / or the shape of the first assembly structure is different from the shape of the second assembly structure.

[0054] When the shapes of the first assembly structure and the second assembly structure are different, for example, one of the shapes of the first assembly structure is rectangular and the other is triangular, then during assembly, the insertion operation can only be completed when the first anti-misalignment component 611 is aligned with the shape-matching first mounting groove 711 and the second anti-misalignment component 612 is aligned with the shape-matching second mounting groove 712. This prevents the first connector 40 and the second connector 50 from being assembled in the wrong direction or position, fundamentally avoiding assembly errors caused by confusion of direction, ensuring the anti-misalignment function, and ensuring the accuracy of assembly.

[0055] When the areas of the first assembly structure and the second assembly structure are different, for example, the area of ​​the first assembly structure is larger than the area of ​​the second assembly structure, during the assembly process, the embedding operation can only be completed when the first anti-misalignment component 611 is aligned with the first mounting groove 711 that matches the area, and the second anti-misalignment component 612 is aligned with the second mounting groove 712 that matches the area. This restricts the assembly position of the first connector 40 and the second connector 50, further enhances the anti-misalignment function, ensures the accuracy of assembly, and thus restricts the assembly position of the auxiliary cutting unit 30 on the machine body 10, avoids incorrect installation direction of the auxiliary cutting unit 30 on the machine body 10, and ensures the accuracy of the installation of the auxiliary cutting unit 30.

[0056] When the first assembly structure differs from the second assembly structure in both shape and area, the error prevention effect is more significant. This results in a dual difference between the first and second assembly structures, which greatly enhances the uniqueness of the assembly and almost completely eliminates the possibility of incorrect assembly, thereby increasing the success rate of assembly.

[0057] Thanks to the clear design of the error-proof structure, assemblers can quickly identify the correspondence between the first error-proof component 611, the second error-proof component 612 and the first mounting slot 711, the second mounting slot 712, without having to repeatedly try different assembly methods. The intuitive assembly guidance makes the assembly process smoother, reduces rework and adjustment time caused by incorrect assembly, thereby significantly improving assembly efficiency and shortening the product production cycle.

[0058] The first and second assembly structures feature differentiated error-proof designs that simplify the complex assembly process into simple corresponding embedding operations, making it easier for assembly personnel to operate.

[0059] Combination Figure 7 and Figure 8 In some embodiments, to prevent mistakes, the first mistake-proofing component 611 includes a first mistake-proofing part 6111 and a second mistake-proofing part 6112 disposed at an angle to the first mistake-proofing part 6111. The included angle between the first mistake-proofing part 6111 and the second mistake-proofing part 6112 is a first included angle α. The second mistake-proofing component 612 includes a third mistake-proofing part 6121 and a fourth mistake-proofing part 6122 disposed at an angle to the third mistake-proofing part 6121. The included angle between the third mistake-proofing part 6121 and the fourth mistake-proofing part 6122 is a second included angle β. The first included angle α is greater than the second included angle β.

[0060] The difference between the first included angle α and the second included angle β results in different geometric shapes for the first anti-misalignment component 611 and the second anti-misalignment component 612. During assembly, assembly can only be successfully completed when the first anti-misalignment component 6111 and the second anti-misalignment component 6112 are inserted into the corresponding first mounting slot 711 and second mounting slot 712 in the direction matching the first included angle α, and the third anti-misalignment component 6121 and the fourth anti-misalignment component 6122 are inserted into the corresponding first mounting slot 711 and second mounting slot 712 in the direction matching the third included angle α. The larger first included angle α and the smaller second included angle β create a significant difference, restricting the assembly direction of the first connector 40 and the second connector 50, ensuring the uniqueness of the assembly, and effectively avoiding incorrect assembly caused by confusion of direction.

[0061] Because the first included angle α and the second included angle β are significantly different, even if there are some deviations in the assembly process, the larger angle difference can be more easily identified, improving the fault tolerance rate of the error-proof assembly and reducing the probability of incorrect assembly. Moreover, the clear angle difference provides assembly personnel with clear visual and operational guidance, allowing them to quickly distinguish the assembly direction of the first error-proof part 611 and the second error-proof part 612 without spending a lot of time on trial and error and adjustments. This intuitive assembly method makes the assembly process smoother, reduces assembly time, and improves overall assembly efficiency.

[0062] The design, where the first included angle α is greater than the second included angle β, simplifies the complex assembly process into a simple operation based on angle matching. Assemblers only need to assemble according to the size and direction of the included angles, reducing assembly difficulty and ensuring consistent product quality.

[0063] Figure 9 for Figure 6 Top view of the second joint; Figure 10 for Figure 9 A schematic diagram showing the arrangement of the first and second included angles. (Combined with...) Figure 9 and Figure 10 In some embodiments, to prevent mistaken installation, the first mounting slot 711 includes a first sub-mounting slot 7111 and a second sub-mounting slot 7112 angled to the first sub-mounting slot 7111. The included angle between the first sub-mounting slot 7111 and the second sub-mounting slot 7112 is a third included angle γ. The second mounting slot 712 includes a third sub-mounting slot 7121 and a fourth sub-mounting slot 7122 angled to the third sub-mounting slot 7121. The included angle between the third sub-mounting slot 7121 and the fourth sub-mounting slot 7122 is a fourth included angle θ. The third included angle γ is greater than the fourth included angle θ. For example, the third included angle γ matches the first included angle α (i.e., the third included angle γ can be equal to the first included angle α, the third included angle γ can be slightly smaller than the first included angle α, or the third included angle γ can be slightly larger than the first included angle α), and the fourth included angle θ matches the second included angle β (i.e., the fourth included angle θ can be equal to the second included angle β, the fourth included angle θ can be slightly smaller than the second included angle β, or the fourth included angle θ can be slightly larger than the second included angle β).

[0064] Combination Figure 7 and Figure 9 The first anti-mistake part 6111 is embedded in the first sub-mounting slot 7111, the second anti-mistake part 6112 is embedded in the second sub-mounting slot 7112, the third anti-mistake part 6121 is embedded in the third sub-mounting slot 7121, and the fourth anti-mistake part 6122 is embedded in the fourth sub-mounting slot 7122.

[0065] The difference between the third included angle γ and the fourth included angle θ results in different geometries for the first mounting groove 711 and the second mounting groove 712. During assembly, assembly can only be successfully completed when the first anti-misalignment part 6111 and the second anti-misalignment part 6112 are inserted into the corresponding first sub-mounting groove 7111 in a direction matching the third included angle γ, and the third anti-misalignment part 6121 and the fourth anti-misalignment part 6122 are inserted into the corresponding third sub-mounting groove 7121 and fourth sub-mounting groove 7122 in a matching direction. The larger third included angle γ and the smaller fourth included angle θ create a significant difference, restricting the assembly direction of the first connector 40 and the second connector 50, ensuring the uniqueness of the assembly, and effectively avoiding incorrect assembly caused by confusion of direction.

[0066] Because the third included angle γ and the fourth included angle θ differ significantly, even if there are some deviations in the assembly process, the larger angle difference can be more easily identified, improving the fault tolerance rate of the error-proof assembly and reducing the probability of incorrect assembly. Moreover, the clear angle difference provides assembly personnel with clear visual and operational guidance, allowing them to quickly distinguish the assembly direction of the first error-proof part 611 and the second error-proof part 612 without spending a lot of time on trial and error and adjustments. This intuitive assembly method makes the assembly process smoother, reduces assembly time, and improves overall assembly efficiency.

[0067] The design, where the third included angle γ is greater than the fourth included angle θ, simplifies the complex assembly process into a simple operation based on angle matching. Assemblers only need to assemble according to the size and direction of the included angles, reducing assembly difficulty and ensuring consistent product quality.

[0068] Combination Figure 7 and Figure 9 In some embodiments, to facilitate the embedding part 61 being embedded into the mounting groove 71, the embedding part 61 further includes a connector 613, the opposite sides of which are connected to the first anti-mistake member 611 and the second anti-mistake member 612, respectively. The embedding groove 71 further includes a connecting groove 713, the opposite sides of which are connected to the first mounting groove 711 and the second mounting groove 712, respectively. The connector 613 is embedded within the connecting groove 713.

[0069] The cooperation between connector 613 and connecting groove 713 provides a clear guide for the insertion part 61 to be inserted into the mounting groove 71. During the docking process of the first connector 40 and the second connector 50, the assembler only needs to align connector 613 with connecting groove 713 to naturally guide the first anti-misalignment part 611 and the second anti-misalignment part 612 into the first mounting groove 711 and the second mounting groove 712 respectively, without spending a lot of time finding the correct assembly direction and position, thus improving the efficiency and accuracy of assembly.

[0070] Figure 11 for Figure 4 A cross-sectional view of the first and second joints along the CC direction. (Combined) Figure 7 , Figure 9 and Figure 11 In some embodiments, in order to realize signal transmission between the machine body 10 and the control auxiliary cutting unit 30, one of the first connector 40 and the second connector 50 is provided with a plurality of inserts 41 and the other is provided with a plurality of docking holes 51. The plurality of inserts 41 correspond one-to-one with the plurality of docking holes 51, and the inserts 41 are inserted into the corresponding docking holes 51 to realize the electrical connection between the machine body 10 and the auxiliary cutting unit 30.

[0071] Insert 41 is inserted into the corresponding docking hole 51, which enables stable and accurate signal transmission between the machine body 10 and the control auxiliary cutting unit 30, ensuring reliable signal transmission and enabling the control auxiliary cutting unit 30 to respond to the control commands of the machine body 10 in a timely and accurate manner, thereby improving the overall performance and working efficiency of the equipment.

[0072] Because the cooperation of the first anti-mistake structure 60 and the second anti-mistake structure 70 can effectively prevent the incorrect connection of the first connector 40 and the second connector 50, it can ensure that the insert 41 is inserted into the corresponding mating hole 51, ensuring the correct mating of the first connector 40 and the second connector 50, avoiding the insertion of the insert 41 into the mating hole 51 that is not corresponding to the insert 41, ensuring the stability of the lawnmower's operation, and ensuring the safety of the lawnmower.

[0073] Combination Figure 7 and Figure 9 In some embodiments, to avoid interference between the first foolproof structure 60 and the second foolproof structure 70 and the insertion of the insert 41 into the corresponding mating hole 51, multiple inserts 41 and multiple mating holes 51 are staggered from the first foolproof structure 60 and the second foolproof structure 70. This allows the first connector 40 to be connected to the second connector 50 without worrying about the first foolproof structure 60 and the second foolproof structure 70 affecting the insertion of the insert 41 into the mating hole 51. This enables smoother connection of the first connector 40 and the second connector 50, and allows the insert 41 to be accurately inserted into the corresponding mating hole 51 according to the normal operating procedure. No additional adjustments or avoidance actions are required, simplifying the assembly process and improving assembly efficiency.

[0074] In some embodiments, the first foolproof structure 60 has an insert portion 61, and the second foolproof structure 70 has an insert groove 71. Of course, in other embodiments, the second foolproof structure 70 has an insert portion 61, and the first foolproof structure 60 has an insert groove 71.

[0075] Of course, in some other embodiments, the shape of the embedding part 61 can be trapezoidal, T-shaped, etc., and the shape of the embedding groove 71 is consistent with the shape of the embedding part 61.

[0076] Figure 12 for Figure 3 Enlarged view of point B in the middle. (Combined with...) Figure 12 In some embodiments, in order to ensure the safety of the first connector 40 and the second connector 50, the machine body 10 is provided with a first mounting member 11, and the auxiliary cutting unit 30 is provided with a second mounting member 31. The first mounting member 11 and the second mounting member 31 cooperate to form a receiving cavity for accommodating the first connector 40 and the second connector 50.

[0077] During equipment operation, the machine body 10 and auxiliary cutting unit 30 may be subjected to external impacts due to improper operation, accidental collisions, or other reasons. The receiving cavity formed by the first mounting member 11 and the second mounting member 31 provides a physical barrier for the first connector 40 and the second connector 50, which can buffer and disperse external forces, reduce damage to the first connector 40 and the second connector 50 from direct impacts, and ensure the stability of the connection between the first connector 40 and the second connector 50. Moreover, the receiving cavity can prevent external impurities from entering the connection point of the first connector 40 and the second connector 50, avoid poor contact between the first connector 40 and the second connector 50, affect the signal transmission quality, ensure the stability of the connection between the first connector 40 and the second connector 50, and make the signal transmission stable.

[0078] Since lawnmowers may be used in humid environments or in work scenarios where they may come into contact with water, the containment cavity provides a certain degree of moisture and water protection. The containment cavity prevents water from splashing directly onto the first connector 40 and the second connector 50, reducing the risk of short circuits and corrosion caused by moisture, thus ensuring the safety of the first connector 40 and the second connector 50.

[0079] Combination Figure 12 In some embodiments, to ensure sealing performance, the lawnmower further includes a seal 80. The seal 80 is disposed between the first mounting member 11 and the second mounting member 31, and contacts both the first mounting member 11 and the second mounting member 31. Exemplarily, the seal 80 can be a sealing ring, and the material of the sealing ring 80 can be rubber.

[0080] Lawn mowers are typically used outdoors, where the surrounding air contains a significant amount of dust and / or debris. If the gap between the first mounting piece 11 and the second mounting piece 31 is not sealed, dust can easily reach the first connector 40 and the second connector 50. Once dust and / or debris enter the mating area of ​​the first connector 40 and the second connector 50, it may cause malfunctions such as short circuits. The seal 80 effectively prevents dust from entering, keeps the mating area of ​​the first connector 40 and the second connector 50 clean, and extends the service life of the equipment.

[0081] When using a lawnmower in humid environments, on wet ground, or during rainy weather, moisture can easily enter the joint between the first connector 40 and the second connector 50 through the gap between the first mounting part 11 and the second mounting part 31. Moisture may cause short circuits or electrical leaks at the first and second connectors 40 and 50, posing safety hazards. The sealing element 80 effectively prevents humid air from entering the joint between the first and second connectors 40 and 50, ensuring their safety and reducing the occurrence of electrical leaks, short circuits, and damage caused by moisture intrusion. This improves the lawnmower's waterproofness, allowing it to function normally in humid environments and thus enhancing its overall applicability.

[0082] Combination Figure 12 In some embodiments, to further ensure sealing performance, one of the first mounting member 11 and the second mounting member 31 is provided with an annular groove 111 and the other is provided with an annular member 311. The annular member 311 is embedded in the annular groove 111, and the sealing member 80 is provided in the annular groove 111 and abuts against the annular member 311.

[0083] The annular groove 111 provides a fixed and precise installation position for the seal 80. After the annular member 311 is embedded in the annular groove 111, it abuts against the seal 80, forming a stable sealing reference surface. This stable reference surface ensures that the seal 80 can always maintain the correct position and shape during long-term use, and will not affect the sealing effect due to minor movement or deformation of the mounting parts, thereby improving the reliability of the seal.

[0084] The seal 80 fills the tiny gap between the annular groove 111 and the annular element 311, preventing liquids, gases, and dust from entering the cavity and achieving a seal. Simultaneously, the tight fit between the annular groove 111 and the annular element 311 also contributes to the sealing effect, forming a multi-layered sealing structure that further enhances the overall sealing performance.

[0085] The nested design of the annular groove 111 and the annular component 311 forms a mechanical interlocking structure, which makes the connection between the first mounting component 11 and the second mounting component 31 more stable. During the operation of the lawnmower, even if it is subjected to external forces such as vibration and impact, it is not easy to loosen or separate, thus ensuring the stability of the connection between the first mounting component 11 and the second mounting component 31.

[0086] Figure 13 for Figure 1 A schematic diagram showing the connection between the auxiliary cutting unit and the main body of a lawnmower; Figure 14 for Figure 13 A connection diagram of the locking components. (Combined with...) Figure 13 and Figure 14 In some embodiments, in order to connect the auxiliary cutting unit 30 to the machine body 10, the machine body 10 has a first mounting hole 12, and the auxiliary cutting unit 30 has a locking member 32, which is connected to the first mounting hole 12.

[0087] The first mounting hole 12 provides a clear mounting position for the locking element 32. When installing the auxiliary cutting unit 30, the operator can quickly align the locking element 32 with the first mounting hole 12 without spending a lot of time on precise positioning adjustments, which can shorten the installation time and improve work efficiency.

[0088] The connection between the locking element 32 and the first mounting hole 12 is usually quite simple, and may be achieved through a threaded connection or similar means. The locking element 32 can be connected to the first mounting hole 12 using simple tools (such as screwdrivers, wrenches, etc.) or by manual operation, thus completing the installation of the auxiliary cutting unit 30 on the machine body 10. This eliminates the need for complex procedures and reduces the difficulty of installation.

[0089] The cooperation between the first mounting hole 12 and the locking member 32 forms a reliable mechanical connection structure. When the locking member 32 is securely connected in the first mounting hole 12, it can withstand various forces generated by the auxiliary cutting unit 30 during operation, such as cutting force, vibration force, and centrifugal force, ensuring that the auxiliary cutting unit 30 will not loosen or fall off, and guaranteeing the normal operation of the cutting work. Moreover, the tight connection between the locking member 32 and the first mounting hole 12 can effectively prevent the auxiliary cutting unit 30 from loosening and shifting during use, better maintain the positional accuracy of the auxiliary cutting unit 30, and ensure the stability and consistency of the cutting effect.

[0090] Figure 15 for Figure 13 A schematic diagram of the locking mechanism arrangement of the auxiliary cutting unit in a lawnmower; Figure 16 for Figure 16 A schematic diagram showing the fit between the locking mechanism and the second mounting hole of the lawnmower. (Combined with...) Figure 14 , Figure 15 and Figure 16 In some embodiments, in order to prevent the locking member 32 from being lost, the auxiliary cutting unit 30 is provided with a second mounting hole 33, and the locking member 32 is connected to the second mounting hole 33. Before the auxiliary cutting unit 30 is installed on the machine body 10, the locking member 32 is installed on the auxiliary cutting unit 30. During the process of installing the auxiliary cutting unit 30 on the machine body 10, it is not necessary to find the locking member 32 separately, which improves the installation efficiency.

[0091] Combination Figure 16 In some embodiments, to prevent the locking member 32 from falling off the auxiliary cutting unit 30, the locking member 32 includes a first connecting part 321, a second connecting part 322, and a limiting part 323. One end of the second connecting part 322 is connected to the first connecting part 321, and the other end of the second connecting part 322 is detachably connected to the limiting part 323. The second connecting part 322 is located inside the second mounting hole 33. The first connecting part 321 is detachably connected to the first mounting hole 12. The limiting part 323 is located outside the second mounting hole 33. The diameters of the first connecting part 321 and the limiting part 323 are both larger than the diameter of the second mounting hole 33. By limiting the locking member 32 through the first connecting part 321 and the limiting part 323, the stability of the locking member 32 installed on the auxiliary cutting unit 30 is ensured, so that the locking member 32 always remains on the auxiliary cutting unit 30 during the disassembly and assembly process and will not fall off, preventing the locking member 32 from being lost and reducing costs.

[0092] In some embodiments, the locking member 32 can be a screw, the first connecting part 321 has threads, the second connecting part 322 can be an optical shaft, and the limiting part 323 can be a nut. After the first connecting part 321 is screwed into the second mounting hole 33 and then screwed out of the second mounting hole 33, the screw will not fall off, thus preventing the screw from being lost.

[0093] In some embodiments, the first mounting hole 12 can be a threaded hole, and the locking member 32 can be a screw. The locking member 32 passes through the first mounting hole 12 and is threadedly connected to the second mounting hole 33, thereby improving the firmness of the connection between the auxiliary cutting unit 30 and the body 10 and improving the reliability of the lawnmower.

[0094] The detachable design of the body 10 and the auxiliary cutting unit 30 facilitates the modular design of the auxiliary cutting unit 30. Even after the auxiliary cutting unit 30 is upgraded or improved, it can still be assembled on the body 10 without modifying the body 10, thereby improving the practicality and applicability of the auxiliary cutting unit 30.

[0095] In some embodiments, the number of locking elements 32 can be multiple, and the specific number can be set as needed. The figure shows four as an example.

[0096] Figure 17 for Figure 1 A diagram illustrating the operation of a lawnmower; Figure 18 for Figure 17 A top view of a lawnmower. (Combined with...) Figure 17 and Figure 18 In some embodiments, to effectively reduce the problem of missed mowing along the edges, an auxiliary cutting unit 30 is located on the right side of the mower body 10 along the forward direction F of the mower. When the mower operates on the boundary region 91 of the work area 90, the mower moves counterclockwise along the boundary region 90. Exemplarily, the auxiliary cutting unit 30 is located... Figure 16 The right side of the fuselage.

[0097] As the mower body 10 moves forward, its structure creates blind spots, preventing the main cutting unit 20 from cutting some grass near the boundary of the work area 90. Therefore, along the mower's forward direction F, the auxiliary cutting unit 30 is positioned on the right side of the body 10. When the mower moves counter-clockwise along the boundary area 90, the auxiliary cutting unit 30 can cut closer to the edge of the boundary area 91 of the work area 90, effectively covering the blind spots. Because the cutting range of the auxiliary cutting unit 30 can cover the right edge of the mower body 10's forward trajectory, it reduces missed cuts caused by gaps between the body 10 and the edge of the boundary area 91, ensuring more coverage of the outer boundary area without exceeding the boundary line. This ensures that the grass in the boundary area 91 is completely cut, thus minimizing missed cuts along the edge.

[0098] When mowing, the operator is generally located outside the work area 90, along the forward direction F of the mower. The auxiliary cutting unit 30 is located on the right side of the machine body 10. When the machine body 10 moves in a counterclockwise direction, the operator can more clearly observe the boundary area 91 of the work area 90 and the working status of the auxiliary cutting unit 30. This helps the operator to detect abnormalities in time, such as the auxiliary cutting unit 30 being stuck by debris or encountering obstacles, and to take timely measures to deal with them, so as to avoid safety accidents.

[0099] Figure 19 for Figure 17 A schematic diagram showing the layout of the main cutting unit and auxiliary cutting unit of a lawnmower. (Combined with...) Figure 17 and Figure 19 In some embodiments, in order to ensure that the lawnmower can completely cut the boundary area 91, the lawnmower advances two circles along the boundary area 91. When the lawnmower advances along the outer circle, the first cutter disc 21 of the main cutting unit 20 and the second cutter disc 34 of the auxiliary cutting unit 30 both rotate.

[0100] As the lawnmower moves along the outer edge, the main cutting unit 20 and the auxiliary cutting unit 30 work together. The auxiliary cutting unit 30 can cut the edge areas that the main cutting unit 20 cannot reach, making full use of their respective cutting capabilities and avoiding missed areas. The lawnmower can complete a large-area cut in one go by utilizing the synergistic effect of the main cutting unit 20 and the auxiliary cutting unit 30, reducing the number of back-and-forth movements.

[0101] In some embodiments, when the lawnmower moves forward along the innermost circle, the first cutter disc 21 of the main cutting unit 20 rotates while the second cutter disc 34 of the auxiliary cutting unit 30 does not rotate. The rotation of the first cutter disc 21 of the main cutting unit 20 is sufficient to meet the cutting requirements of the innermost circle. The absence of rotation of the second cutter disc 34 of the auxiliary cutting unit 30 avoids unnecessary energy consumption and reduces wear on the second cutter disc 34, ensuring its service life and reducing costs.

[0102] In some embodiments, when the lawnmower operates on the boundary area 91, it cuts in the order of first moving forward in the outer circle of the boundary area 91 and then moving forward in the inner circle of the boundary area 91. This can avoid the problem of repeated cutting or missed cutting caused by an unreasonable cutting order, and can make the working path of the lawnmower clearer, improving the accuracy and completeness of cutting.

[0103] In some embodiments, the second cutter disc 34 of the auxiliary cutting unit 30 rotates counterclockwise. When the second cutter disc 34 of the auxiliary cutting unit 30 is cutting grass, the grass clippings are carried to the front right position of the body 10 along the rotation direction of the second cutter disc 34, preventing the grass clippings from being carried into the gap of the drive wheel structure at the rear right side of the body 10 and affecting the normal movement of the lawnmower.

[0104] 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", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Therefore, they should not be construed as limitations on this application.

[0105] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0106] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0107] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0108] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A lawnmower, characterized in that, include: body; The main cutting unit is located at the bottom of the machine body; An auxiliary cutting unit is detachably mounted on one side of the machine body; The first connector is located on the fuselage; The second connector is located in the auxiliary cutting unit and is detachably connected to the first connector to realize the electrical connection between the machine body and the auxiliary cutting unit; A first foolproof structure is provided at the first connector; The second foolproof structure is located at the second connector and cooperates with the first foolproof structure.

2. The lawnmower according to claim 1, characterized in that, The first foolproof structure and the second foolproof structure each have an embedding part and an embedding groove, with the embedding part being embedded in the embedding groove.

3. The lawnmower according to claim 2, characterized in that, The embedded part includes a first anti-mistake component and a second anti-mistake component connected to the first anti-mistake component. The embedded groove includes a first mounting groove and a second mounting groove communicating with the first mounting groove. The first anti-mistake component is embedded in the first mounting groove to form a first assembly structure, and the second anti-mistake component is embedded in the second mounting groove to form a second assembly structure. Wherein, the area of ​​the first assembly structure is different from the area of ​​the second assembly structure, and / or, the shape of the first assembly structure is different from the shape of the second assembly structure.

4. The lawnmower according to claim 3, characterized in that, The first error-proof component includes a first error-proof part and a second error-proof part arranged at an angle to the first error-proof part, the included angle between the first error-proof part and the second error-proof part being a first included angle; the second error-proof component includes a third error-proof part and a fourth error-proof part arranged at an angle to the third error-proof part, the included angle between the third error-proof part and the fourth error-proof part being a second included angle. The first included angle is greater than the second included angle.

5. The lawnmower according to claim 3, characterized in that, The first mounting slot includes a first sub-mounting slot and a second sub-mounting slot that is angled to the first sub-mounting slot. The included angle between the first sub-mounting slot and the second sub-mounting slot is a third included angle. The second mounting slot includes a third sub-mounting slot and a fourth sub-mounting slot that is angled to the third sub-mounting slot. The included angle between the third sub-mounting slot and the fourth sub-mounting slot is a fourth included angle. The third included angle is greater than the fourth included angle.

6. The lawnmower according to claim 3, characterized in that, The first anti-mistake component includes a first anti-mistake part and a second anti-mistake part arranged at an angle to the first anti-mistake part, the included angle between the first anti-mistake part and the second anti-mistake part being a first included angle; the second anti-mistake component includes a third anti-mistake part and a fourth anti-mistake part arranged at an angle to the third anti-mistake part, the included angle between the third anti-mistake part and the fourth anti-mistake part being a second included angle; the first mounting groove includes a first sub-mounting groove and a second sub-mounting groove arranged at an angle to the first sub-mounting groove, the included angle between the first sub-mounting groove and the second sub-mounting groove being a third included angle; the second mounting groove includes a third sub-mounting groove and a fourth sub-mounting groove arranged at an angle to the third sub-mounting groove, the included angle between the third sub-mounting groove and the fourth sub-mounting groove being a fourth included angle. Wherein, the first included angle is greater than the second included angle, the third included angle is greater than the fourth included angle, the first included angle matches the third included angle, and the second included angle matches the fourth included angle.

7. The lawnmower according to claim 3, characterized in that, The embedded part further includes a connector, the opposite sides of which are connected to the first anti-mistake component and the second anti-mistake component respectively; the embedded groove further includes a connecting groove, the opposite sides of which are connected to the first mounting groove and the second mounting groove respectively. The connector is embedded in the connecting groove.

8. The lawnmower according to any one of claims 1-7, characterized in that, One of the first connector and the second connector is provided with multiple inserts, and the other is provided with multiple docking holes. The multiple inserts correspond one-to-one with the multiple docking holes. The inserts are inserted into the corresponding docking holes to realize the electrical connection between the machine body and the auxiliary cutting unit.

9. The lawnmower according to claim 8, characterized in that, The plurality of inserts and the plurality of mating holes are staggered from the first foolproof structure and the second foolproof structure.

10. The lawnmower according to any one of claims 1-7, characterized in that, The machine body is provided with a first mounting component, and the auxiliary cutting unit is provided with a second mounting component. The first mounting component and the second mounting component cooperate to form a receiving cavity for accommodating the first connector and the second connector.

11. The lawnmower according to claim 10, characterized in that, The lawnmower also includes: A seal is disposed between the first mounting member and the second mounting member, and contacts the first mounting member and the second mounting member.

12. The lawnmower according to claim 11, characterized in that, One of the first mounting component and the second mounting component has an annular groove, and the other has an annular component. The annular component is embedded in the annular groove, and the sealing component is disposed in the annular groove and abuts against the annular component.

13. The lawnmower according to any one of claims 1-7, characterized in that, The machine body is provided with a first mounting hole, and the auxiliary cutting unit is provided with a locking component, which is connected to the first mounting hole.

14. The lawnmower according to claim 13, characterized in that, The auxiliary cutting unit is provided with a second mounting hole, and the locking member is connected to the second mounting hole.

15. The lawnmower according to any one of claims 1-7, characterized in that, Along the forward direction of the lawnmower, the auxiliary cutting unit is located on the right side of the machine body; When the lawnmower operates on the boundary area of ​​the work area, it moves along the boundary area in a counterclockwise direction.

16. The lawnmower according to claim 15, characterized in that, The lawnmower advances two circles along the boundary area. When the lawnmower advances along the outer circle, the first blade of the main cutting unit and the second blade of the auxiliary cutting unit both rotate.

17. The lawnmower according to claim 16, characterized in that, When the lawnmower moves forward along the innermost circle, the first blade of the main cutting unit rotates, while the second blade of the auxiliary cutting unit does not rotate.

18. The lawnmower according to claim 16, characterized in that, The second cutter head of the auxiliary cutting unit rotates counterclockwise.

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