Lawn mower and auxiliary cutting unit

Abstract

The application provides a mower and an auxiliary cutting unit. The mower comprises a machine body, a main cutting unit, a running mechanism and an auxiliary cutting unit. The main cutting unit can be arranged at the bottom of the machine body. The main cutting unit has a main cutting area. The running mechanism can be used to drive the mower to move. One side of the machine body is formed with an assembly area. The auxiliary cutting unit is installed in the assembly area. The auxiliary cutting unit comprises an auxiliary cutting module, a side shield and a bottom shield. The auxiliary cutting module has an auxiliary cutting area which is different from the main cutting area. The side shield is arranged at the outer side of the auxiliary cutting module. The bottom shield is arranged at the bottom of the auxiliary cutting module. The mower provided by the application can improve the mowing efficiency.

Description

Technical Field

[0001] This application relates to electric garden tools, and in particular 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. Traditional lawn mowers typically use a centrally mounted cutting disc at the bottom of the machine to trim large areas of lawn. However, near walls, fences, or obstacles, the disc's position can cause missed areas, affecting the overall aesthetics and maintenance results. Utility Model Content

[0003] In view of this, this application provides a lawnmower for improving the cutting efficiency of the lawnmower.

[0004] To achieve the above objectives, in a first aspect, embodiments of this application provide a lawnmower, including: a main cutting unit, a traveling mechanism, and an auxiliary cutting unit;

[0005] The main cutting unit is located at the bottom of the machine body, and the main cutting unit has a main cutting area;

[0006] The driving mechanism is used to drive the lawnmower to move;

[0007] An assembly area is formed on one side of the machine body, and the auxiliary cutting unit is installed in the assembly area;

[0008] The auxiliary cutting unit includes an auxiliary cutting module, a side shield, and a bottom shield. The auxiliary cutting module has an auxiliary cutting area that is different from the main cutting area. The side shield is disposed on the outside of the auxiliary cutting module, and the bottom shield is disposed on the bottom of the auxiliary cutting module.

[0009] In one possible implementation of the first aspect, a first mounting structure is provided on a first side of the assembly area, and a second mounting structure that cooperates with the first mounting structure is provided on a second side of the auxiliary cutting module, with the second side and the first side being opposite to each other.

[0010] In one possible implementation of the first aspect, the machine body is provided with a transmission interface, which is electrically connected to the auxiliary cutting module.

[0011] In one possible implementation of the first aspect, the main cutting unit includes a main cutting disc and a first cutting disc guard and a second cutting disc guard located above the main cutting disc;

[0012] In the transverse direction of the lawnmower, the first blade guard and the second blade guard are arranged opposite to each other on both sides of the main blade;

[0013] The first cutter head cover and / or the second cutter head cover are provided with a protective part, and the lower end of the protective part is less than the lower end of the main cutter head.

[0014] In one possible implementation of the first aspect, the first cutter head cover is disposed on the same side as the assembly area, and the first cutter head cover is detachably connected to the machine body and / or the second cutter head cover.

[0015] In one possible implementation of the first aspect, the first cutter head cover is in a disassembled state when the auxiliary cutting unit is mounted on the machine body.

[0016] In one possible implementation of the first aspect, the auxiliary cutting unit is in a disassembled state when the first cutter head cover is installed on the machine body or the second cutter head cover.

[0017] In one possible implementation of the first aspect, the first cutter head cover is detachably connected to the second cutter head cover via a second detachable structure.

[0018] In one possible implementation of the first aspect, the main cutting disc includes a main cutting component, the cutting radius of the main cutting component is greater than the cutting radius of the auxiliary cutting component of the auxiliary cutting module, the rotational speed of the auxiliary cutting component is greater than the rotational speed of the main cutting component, and the kinetic energy of the auxiliary cutting component is less than the kinetic energy of the main cutting component.

[0019] In one possible implementation of the first aspect, the side shield includes an outer shield and an inner shield, the inner shield being located between the outer shield and the auxiliary cutting module; the lower end of the outer shield is at a greater height from the ground than the lower end of the inner shield.

[0020] In one possible implementation of the first aspect, the travel mechanism includes rollers, which are disposed at the rear end of the lawnmower in the direction of movement of the lawnmower;

[0021] There is a gap between the side guard and the roller in the direction of movement and / or lateral direction of the lawnmower.

[0022] In one possible implementation of the first aspect, in the direction of movement of the lawnmower, the inner cover is located at the front end of the roller, and a first gap exists between the rear end of the inner cover and the front end of the roller; the rear end of the outer cover extends to the outside of the roller.

[0023] In the lateral direction of the lawnmower, there is a second gap between the inner sidewall of the rear end of the outer cover and the outer side of the roller.

[0024] In one possible implementation of the first aspect, the first gap is 10-50 mm, and the second gap is 8-30 mm;

[0025] In the direction of movement of the lawnmower, the overlap distance between the outer cover and the roller is 15-30mm.

[0026] In one possible implementation of the first aspect, a front shield is provided at the front end of the fuselage;

[0027] There is a gap between the front guard and the side guard in the direction of movement and / or lateral direction of the lawnmower.

[0028] In one possible implementation of the first aspect, in the direction of movement of the lawnmower, the inner cover is located at the rear end of the front cover, and a third gap exists between the front end of the inner cover and the rear end of the front cover; the front end of the outer cover extends to the outside of the front cover.

[0029] In the lateral direction of the lawnmower, there is a fourth gap between the inner sidewall of the front end of the outer cover and the outer sidewall of the rear end of the front cover.

[0030] In one possible implementation of the first aspect, in the lateral direction of the lawnmower, the third gap is 12-18 mm and the fourth gap is 2-10 mm;

[0031] In the direction of movement of the lawnmower, the overlap distance between the outer guard and the front guard is 20-70mm.

[0032] In one possible implementation of the first aspect, the auxiliary cutting module further includes a fixing frame and an auxiliary cutting component fixed below the fixing frame;

[0033] The inner protective cover is integrally formed with the fixing frame and is located outside the auxiliary cutting component; the bottom protective cover is fixed on the inner protective cover and is located below the auxiliary cutting component.

[0034] In one possible implementation of the first aspect, in the lateral direction of the lawnmower, the bottom cover is located inside the inner cover, and the distance between the bottom cover and the inner cover is 10-25 mm;

[0035] In the vertical direction, the distance between the bottom cover and the auxiliary cutting component is 2-8 mm.

[0036] In one possible implementation of the first aspect, the outer protective cover and / or the inner protective cover are provided with a first detachable structure, and the outer protective cover and the inner protective cover are detachably connected through the first detachable structure.

[0037] In one possible implementation of the first aspect, the lawnmower further includes partial side guards;

[0038] The lawnmower has a first state and a second state. In the first state, the auxiliary cutting unit is installed in the assembly area; in the second state, the partial side guard is installed in the assembly area.

[0039] In one possible implementation of the first aspect, the third side of the partial side shield is provided with a third mounting structure that cooperates with the first mounting structure, the third side being opposite to the first side.

[0040] Secondly, embodiments of this application provide an auxiliary cutting unit, which can be installed on a lawnmower;

[0041] The auxiliary cutting unit includes an auxiliary cutting module, a side cover, and a bottom cover. The side cover is disposed on the outside of the auxiliary cutting module, and the bottom cover is disposed on the bottom of the auxiliary cutting module.

[0042] In one possible implementation of the second aspect, the side shield includes an outer shield and an inner shield, the inner shield being located between the outer shield and the auxiliary cutting module;

[0043] The lower end of the outer protective cover is at a greater height from the ground than the lower end of the inner protective cover.

[0044] In one possible implementation of the second aspect, the auxiliary cutting module further includes a fixing frame and an auxiliary cutting component fixed below the fixing frame; the inner cover is integrally formed with the fixing frame and is located outside the auxiliary cutting component; the bottom cover is fixed on the inner cover and is located below the auxiliary cutting component.

[0045] In one possible implementation of the second aspect, in the lateral direction, the bottom cover is located inside the inner cover, and the distance between the bottom cover and the inner cover is 10-25 mm;

[0046] In the vertical direction, the distance between the bottom cover and the auxiliary cutting component is 2-8 mm.

[0047] In one possible implementation of the second aspect, the outer cover and / or the inner cover are provided with a first detachable structure, and the outer cover and the inner cover are detachably connected through the first detachable structure.

[0048] In one possible implementation of the second aspect, the lawnmower is provided with a transmission interface on its body, the transmission interface being electrically connected to the auxiliary cutting module.

[0049] Thirdly, embodiments of this application provide a lawnmower, including: a body, a main cutting unit, a travel mechanism, and partial side guards;

[0050] The main cutting unit is located at the bottom of the machine body, and the main cutting unit has a main cutting area;

[0051] The driving mechanism is used to drive the lawnmower to move;

[0052] An assembly area is formed on one side of the fuselage, and a partial side cover is installed in the assembly area.

[0053] In one possible implementation of the third aspect, the lawnmower further includes an auxiliary cutting unit;

[0054] The lawnmower has a first state and a second state. In the first state, the auxiliary cutting unit is installed in the assembly area; in the second state, the partial side guard is installed in the assembly area.

[0055] In one possible implementation of the third aspect, the auxiliary cutting unit includes an auxiliary cutting module, a side shield, and a bottom shield, the side shield being disposed outside the auxiliary cutting module, and the bottom shield being disposed at the bottom of the auxiliary cutting module.

[0056] In one possible implementation of the third aspect, a first mounting structure is provided on the first side of the assembly area, and a second mounting structure that cooperates with the first mounting structure is provided on the second side of the auxiliary cutting module, with the second side and the first side being opposite to each other.

[0057] In one possible implementation of the third aspect, the third side of the partial side shield is provided with a third mounting structure that cooperates with the first mounting structure, and the third side is opposite to the first side.

[0058] In one possible implementation of the third aspect, the machine body is provided with a transmission interface, which is electrically connected to the auxiliary cutting module.

[0059] In one possible implementation of the third aspect, the side shield includes an outer shield and an inner shield, the inner shield being located between the outer shield and the auxiliary cutting module, and the lower end of the outer shield being at a greater height from the ground than the lower end of the inner shield.

[0060] In one possible implementation of the third aspect, in the lateral direction of the lawnmower, the bottom cover is located inside the inner cover, and the distance between the bottom cover and the inner cover is 10-25mm.

[0061] In the vertical direction, the distance between the bottom cover and the auxiliary cutting component of the auxiliary cutting module is 2-8mm.

[0062] In one possible implementation of the third aspect, the travel mechanism includes rollers, which are disposed at the rear end of the lawnmower in the direction of movement of the lawnmower.

[0063] The inner protective cover is located at the front end of the roller, and there is a first gap between the rear end of the inner protective cover and the front end of the roller;

[0064] The rear end of the outer cover extends to the outside of the roller, and there is a second gap between the inner sidewall of the rear end of the outer cover and the outside of the roller.

[0065] In one possible implementation of the third aspect, the first gap is 10-50 mm, and the second gap is 8-30 mm;

[0066] In the direction of movement of the lawnmower, the overlap distance between the outer cover and the roller is 15-30mm.

[0067] In one possible implementation of the third aspect, the front end of the body is provided with a front guard; and there is a gap between the front guard and the side guard in the direction of movement and / or lateral direction of the lawnmower.

[0068] In one possible implementation of the third aspect, in the direction of movement of the lawnmower, the inner cover is located at the rear end of the front cover, and a third gap exists between the front end of the inner cover and the rear end of the front cover; the front end of the outer cover extends to the outside of the front cover.

[0069] In the lateral direction of the lawnmower, there is a fourth gap between the inner sidewall of the front end of the outer cover and the outer sidewall of the rear end of the front cover.

[0070] In one possible implementation of the third aspect, the third gap is 12-18 mm, and the fourth gap is 2-10 mm;

[0071] In the direction of movement of the lawnmower, the overlap distance between the outer guard and the front guard is 20-70mm.

[0072] In one possible implementation of the third aspect, in the direction of movement of the lawnmower, the partial side guard is located at the front end of the roller, and there is a fifth gap between the rear end of the partial side guard and the front end of the roller.

[0073] In one possible implementation of the third aspect, the fifth gap is 12-18 mm.

[0074] In one possible implementation of the third aspect, in the direction of movement of the lawnmower, the partial side guard is located at the rear end of the front guard, and a sixth gap exists between the front end of the partial side guard and the rear end of the front guard.

[0075] In one possible implementation of the third aspect, the sixth gap is 12-18 mm.

[0076] In one possible implementation of the third aspect, the main cutting unit includes a main cutting disc and a first cutting disc guard and a second cutting disc guard located above the main cutting disc;

[0077] In the transverse direction of the lawnmower, the first blade guard and the second blade guard are arranged opposite each other on both sides of the main blade.

[0078] In one possible implementation of the third aspect, the first cutter head cover is disposed on the same side as the assembly area, and the first cutter head cover is detachably connected to the machine body and / or the second cutter head cover.

[0079] In one possible implementation of the third aspect, the first cutter head cover is detachably connected to the second cutter head cover via a second detachable structure.

[0080] In one possible implementation of the third aspect, the first cutter head cover is in a disassembled state when the auxiliary cutting unit is mounted on the machine body.

[0081] In one possible implementation of the third aspect, the first cutter head cover is in the installed state when the partial side cover is installed on the machine body.

[0082] In one possible implementation of the third aspect, the main cutter disc has a main cutting element, the cutting radius of the main cutting element is greater than the cutting radius of the auxiliary cutting element of the auxiliary cutting unit, the rotational speed of the auxiliary cutting element is greater than the rotational speed of the main cutting element, and the kinetic energy of the auxiliary cutting element is less than the kinetic energy of the main cutting element.

[0083] This application provides a lawnmower, and compared with the prior art, the lawnmower provided by this solution has the following advantages:

[0084] By installing the main cutting unit at the bottom of the machine, the main cutting area of ​​the main cutting unit can be used to cut the lawn under the mower. An assembly area is formed on one side of the machine, where the auxiliary cutting unit is installed. This allows the mower to cut grass that the main cutting unit cannot reach, or grass around obstacles, even when it is in the lawn. This not only reduces the probability of damage to the mower but also improves cutting efficiency. Side and bottom guards prevent injury to personnel during transport or when hands or feet are placed under the mower, thus reducing operational risks and improving the safety of the mower. Attached Figure Description

[0085] Figure 1 This is a schematic diagram of the assembly structure of the auxiliary cutting unit provided in the embodiments of this application;

[0086] Figure 2 This is an exploded structural diagram of the auxiliary cutting unit provided in the embodiments of this application;

[0087] Figure 3 A schematic diagram of the limiting portion of the inner protective cover provided in an embodiment of this application;

[0088] Figure 4 A bottom view of the auxiliary cutting unit provided in the embodiments of this application;

[0089] Figure 5 A schematic diagram illustrating the distance between the bottom cover and the auxiliary cutting component provided in this embodiment of the application;

[0090] Figure 6 A top view of the auxiliary cutting unit provided in the embodiments of this application;

[0091] Figure 7 A bottom view of a lawnmower equipped with an auxiliary cutting unit, provided in an embodiment of this application.

[0092] Figure 8 A bottom view of a lawnmower equipped with a main blade guard, provided in an embodiment of this application.

[0093] Figure 9 This is a schematic diagram of the assembly area provided in an embodiment of this application;

[0094] Figure 10 This is a schematic diagram of the assembly structure of the auxiliary cutting unit provided in the embodiments of this application;

[0095] Figure 11 A schematic diagram showing the gaps between the auxiliary cutting unit and the front cover and the roller, respectively, in an embodiment of this application.

[0096] Figure 12Schematic diagrams of the structure of the first and second cutter head guards provided in the embodiments of this application;

[0097] Figure 13 This is a schematic diagram of the structure of the first and second cutter head guards provided in the embodiments of this application when they are installed on the machine body;

[0098] Figure 14 This is a bottom view of the lawnmower equipped with partial side guards provided in the embodiments of this application.

[0099] Figure 15 This is a schematic diagram of the third mounting structure of the partial side shield provided in the embodiments of this application.

[0100] Explanation of reference numerals in the attached figures:

[0101] AA - Assembly area; MA - Main cutting area; SA - Auxiliary cutting area;

[0102] 100 - Auxiliary cutting unit; 110 - Auxiliary cutting module; 111 - Fixing bracket; 1111 - Through hole; 1112 - Second mounting structure; 11121 - Second threaded hole; 112 - Auxiliary drive mechanism; 1121 - Motor; 1122 - Drive plate; 1123 - Auxiliary cutting disc; 1124 - Drive plate cover; 1125 - Motor end cover; 113 - Auxiliary cutting component; 120 - Side cover; 121 - Outer cover; 1211 - Sleeve part; 122 - Inner cover; 1221 - Limiting part; 130 - Bottom cover;

[0103] 200-Main cutting unit; 210-Main cutter head; 211-Main cutting component; 212-Main cutter head cover; 220-First cutter head cover; 221-First protective part; 222-Insertion part; 2221-First fixing hole; 230-Second cutter head cover; 231-Second protective part; 232-Groove; 2321-Second fixing hole;

[0104] 300 - fuselage; 310 - first mounting structure; 311 - first threaded hole; 320 - connector;

[0105] 400 - Roller; 500 - Front guard; 600 - Partial side guard; 610 - Third mounting structure; 611 - Third threaded hole. Detailed Implementation

[0106] In the description of the embodiments of this application, it should be understood that the terms "longitudinal", "horizontal", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0107] The embodiments of this application are described below with reference to the accompanying drawings. The terminology used in the implementation section of this application is only for explaining specific embodiments and is not intended to limit the application. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0108] This application provides an auxiliary cutting unit that can be installed on one side of the lawnmower. On the one hand, this allows the lawnmower to cut the grass at the lawn edge from within the lawn itself while moving along the edge, reducing the operational difficulty and risk of damage. On the other hand, it also improves cutting efficiency. To make the technical solution and advantages of this application clearer, the embodiments of this application will be described below with reference to the accompanying drawings.

[0109] See Figures 1-3 The auxiliary cutting unit 100 may include an auxiliary cutting module 110, a side cover 120, and a bottom cover 130. The side cover 120 may be located outside the auxiliary cutting module 110, and the bottom cover 130 may be located below the auxiliary cutting module 110. The side cover 120 and the bottom cover 130 can protect the auxiliary cutting module 110 to reduce the operational risks for users during the movement and handling of the lawnmower and improve the safety of the lawnmower.

[0110] In some embodiments, the auxiliary cutting unit 100 is detachably mounted on the lawnmower, allowing for easy removal when maintenance or replacement is required, reducing the difficulty and time of maintenance work and improving work efficiency.

[0111] The side shield 120 may include an outer shield 121 and an inner shield 122, with the inner shield 122 located between the outer shield 121 and the auxiliary cutting module 110. In some embodiments, the lower end of the outer shield 121 may be higher than the lower end of the inner shield 122. For example, the lower end of the inner shield 122 may be 35-38 mm higher than the lower end of the outer shield 121, thus forming a stepped structure with a higher outer edge and a lower inner edge.

[0112] Through the above implementation, on the one hand, since there is a height difference between the outer cover 121 and the inner cover 122, with the outer cover being higher than the inner cover, when the user uses the outer cover 121 and the inner cover 122 to move or operate the lawnmower, the user can hold the step structure with their hand, which can increase the contact area between the hand and the lawnmower, allowing the user to hold it more firmly and comfortably, and also making it easier for the user to exert force; on the other hand, the lower structure of the outer cover 121 is moderately raised relative to the inner cover 122, which can reduce the damage to the lower structure of the outer cover 121 from external obstacles during the cutting task in some complex terrains or working environments, increasing the service life of the outer cover 121 and the lawnmower's passability.

[0113] In addition, by placing the inner cover 122 inside the outer cover 121, it mainly contacts the weeds to be cut and has a lower probability of contacting external obstacles, thus reducing the possibility of damage to the inner cover 122; thirdly, this can also effectively block the splashes generated by the high-speed rotation of the auxiliary cutting module 110 during the cutting process, limit the splash area of ​​the splashes, and thus reduce the risk of people around the lawnmower being injured by the splashes.

[0114] See Figures 1-4 The auxiliary cutting module 110 may also include a fixing frame 111, an auxiliary drive mechanism 112, and an auxiliary cutting component 113. The auxiliary cutting component 113 may be an auxiliary cutting blade or a straw rope. The following example uses the auxiliary cutting component 113 as an auxiliary cutting blade for illustration.

[0115] The auxiliary cutter 113 can be used to cut hard-to-reach areas such as lawn edges, corners, or around obstacles. To drive the auxiliary cutter 113 to rotate, the auxiliary cutting module 110 may also include an auxiliary drive mechanism 112, which may be located above the auxiliary cutter 113 and is used to drive the auxiliary cutter 113 to rotate to form the auxiliary cutting area SA.

[0116] After the auxiliary cutting unit 100 is installed on the lawnmower, the auxiliary cutting area SA can be completely located within the lawnmower's projection area on the ground, thereby improving the lawnmower's safety. In some embodiments, the auxiliary cutting area SA may also partially overlap with the projection area of ​​the mower body on the ground, that is, a portion of the auxiliary cutting area SA extends beyond the mower body, thereby increasing the cutting area. In other embodiments, the auxiliary cutting area SA may also extend completely beyond the mower body.

[0117] The interior of the mounting bracket 111 can form a cavity (not shown) for accommodating the auxiliary drive mechanism 112. By placing the auxiliary drive mechanism 112 in the cavity, a semi-enclosed environment can be provided for the auxiliary drive mechanism 112. On the one hand, it can effectively resist adverse factors such as external dust and moisture, thereby extending the service life of the auxiliary drive mechanism 112. On the other hand, it can also improve the space utilization of the lawnmower and help reduce the overall size of the lawnmower.

[0118] The auxiliary drive mechanism 112 may include a motor 1121, a drive plate 1122, an auxiliary cutting disc 1123, a drive plate cover 1124, and a motor end cover 1125. The drive plate 1122 is electrically connected to the motor 1121 to drive its rotation. The auxiliary cutting component 113 is detachably connected to the auxiliary cutting disc 1123, which rotates under the drive of the motor 1121. Using the auxiliary cutting disc 1123 reduces the amount of foreign matter such as grass clippings entering the cavity during cutting, thus protecting the motor 1121 and ensuring a clean working environment. The drive plate cover 1124 covers the drive plate 1122 for protection. The motor end cover 1125 covers the motor 1121 for protection.

[0119] Optionally, the auxiliary cutting element 113 can be positioned below the mounting bracket 111, and the outer protective cover 121 can be fixed to the side of the mounting bracket 111 away from the auxiliary cutting element 113. The inner protective cover 122 can be located between the outer protective cover 121 and the auxiliary cutting element 113, and is detachably connected to the outer protective cover 121, thus better blocking the splatter generated during cutting by the auxiliary cutting element 113. The bottom protective cover 130 can be located inside the inner protective cover 122 and below the auxiliary cutting element 113, thereby reducing damage to the auxiliary cutting element 113 from external obstacles.

[0120] By setting an outer cover 121, an inner cover 122, and a bottom cover 130, with the outer cover 121 detachably connected to the inner cover 122, the auxiliary cutting module 110 can be easily disassembled and reassembled, while also providing lateral and bottom protection. This reduces the risk of being cut by the auxiliary cutting component 113 and improves the safety of the lawnmower.

[0121] See Figure 4 and Figure 5In the diagram, the X direction represents the lateral direction of the lawnmower, the Y direction represents the direction of movement, and the Z direction represents the vertical direction. The bottom cover 130 can be fixed to the inner cover 122. In the lateral direction, the bottom cover 130 can be located inside the inner cover 122, and the distance S4 between the bottom cover 130 and the inner cover 122 can be 10-25mm. In the vertical direction, the bottom cover 130 can be located below the auxiliary cutting component 113, and the distance S3 between the bottom cover 130 and the auxiliary cutting component 113 can be 2-8mm. This distance design allows the bottom cover 130 to protect the auxiliary cutting module 110 and improves the safety of the lawnmower.

[0122] The lawnmower may also include a control mechanism (not shown) that controls the operating state of the auxiliary cutting unit 100. In one possible implementation, a transmission interface may be provided on the lawnmower body, which can be electrically connected to both the control mechanism and the auxiliary cutting module 110. For example, the auxiliary cutting unit 100 can be electrically connected to the transmission interface via a cable (not shown). The transmission interface can be a waterproof slot, with one end of the cable electrically connected to the drive board 1122 of the auxiliary cutting unit 100, and the other end of the cable having a waterproof plug adapted to the waterproof slot. The control mechanism can supply power to the drive board 1122 and communicate with it via the cable to control the auxiliary cutting unit 100.

[0123] By installing waterproof slots at the connection points between the cable and the machine body, moisture can be prevented from entering the internal circuitry of the machine body, reducing the occurrence of problems such as leakage, short circuits, and damage caused by moisture intrusion. This improves the waterproofness of the lawnmower, allowing it to be used normally in humid environments, thereby enhancing its applicability.

[0124] In some embodiments, the cable can be routed at the bottom of the machine body. In other words, the portion between the first and second ends of the cable can be arranged at the bottom of the machine body. This facilitates the separation of the cable from other functional modules of the lawnmower, making more effective use of vertical space and improving space utilization. On the other hand, it enables visual cable routing, allowing for quick screening of cable wear or loose connections during maintenance.

[0125] Optionally, see Figure 6The top of the mounting bracket 111 may also have a through hole 1111, so that after the auxiliary cutting unit 100 is installed on the lawnmower, the cable can be passed through the through hole 1111 and routed to the bottom of the machine body. Additionally, since the upper end of the mounting bracket 111 has a through hole 1111, this also allows for heat dissipation of the motor 1121 inside the cavity, reducing the operating temperature of the motor 1121 and thus extending its service life. In some embodiments, a waterproof plug may also be provided in the waterproof slot to prevent moisture from entering the machine body.

[0126] The cable can be a separate cable, physically separate from both the auxiliary cutting module 110 and the transmission interface. When the control mechanism needs to control the auxiliary cutting module 110, both ends of the cable are connected to the transmission interface and the driver board 1122, respectively. In some embodiments, one end of the cable can always be connected to either the transmission interface or the driver board 1122. For example, one end of the cable can always be connected to the transmission interface, and when the control mechanism needs to control the auxiliary cutting module 110, the other end of the cable is connected to the driver board 1122. In other embodiments, the control mechanism may also include a first lead electrically connected to the transmission interface, and the auxiliary cutting unit 100 may include a second lead electrically connected to the driver board 1122. When the control mechanism needs to control the auxiliary cutting module 110, the first lead and the second lead are connected together.

[0127] Optionally, in the lateral direction, the minimum horizontal distance between the bottom inner edge of the outer protective cover 121 and the auxiliary cutting component 113 can be 25mm. This can increase the safe distance between the outer protective cover 121 and the auxiliary cutting component 113, thereby meeting the handling requirements of safety regulations and reducing the risk of injury.

[0128] In an alternative implementation, the inner cover 122 may be integrally formed with the fixture 111, for example, by injection molding. Exemplarily, the inner cover 122 may be bent to the side of the fixture 111 away from the main cutting unit 200. For example, see... Figure 2 and Figure 3 The inner cover 122 can be formed by bending the fixing frame 111 downwards away from the main cutting unit 200.

[0129] Since the inner cover 122 and the fixing frame 111 are integrally formed, compared with the separate type, this not only simplifies the structure, but also improves the connection between the outer cover 121 and the inner cover 122. In some embodiments, the bottom cover 130 can also be fixed on the fixing frame 111, as long as the bottom cover 130 is located below the auxiliary cutting member 113.

[0130] Of course, in some other embodiments, the inner cover 122 may also be formed by bending the side of the fixing frame 111 away from the main cutting unit 200 upwards. The specific bending direction can be selected according to actual needs, and this application embodiment does not impose any special restrictions on this.

[0131] Optionally, taking the inner cover 122 as an example where the fixing frame 111 is bent downwards away from the main cutting unit 200, the outer cover 121 and / or the inner cover 122 may be provided with a first detachable structure, through which the outer cover 121 can be detachably connected to the inner cover 122. The first detachable structure may be a sleeve structure, a hook and latch structure, a screw and bolt structure, or a magnetic structure, etc. The first detachable structure may be a part of the outer cover 121 and / or the inner cover 122, or it may be an independent structural component.

[0132] For example, see Figures 2-4 A sleeve portion 1211 can be provided on the inner sidewall of the outer cover 121, which can be sleeved onto the inner cover 122. To prevent the outer cover 121 from falling off, in some embodiments, the sleeve structure may also include a limiting portion 1221, which can be provided on the outer sidewall of the bottom end of the inner cover 122. By sleeved connecting the outer cover 121 and the inner cover 122, the installation process can be simplified, the connection strength can be enhanced, the risk of loosening can be reduced, and the outer cover 121 can withstand greater external impact in the direction of movement and lateral direction of the lawnmower. Furthermore, this can save lateral space and improve space utilization.

[0133] In some embodiments, the width of the inner shield 122 may be smaller than the width of the outer shield 121 in the lateral direction. See also Figure 4 In the horizontal direction, the sum of the width of the inner cover 122 and the width of the side wall of the sleeve portion 1211 can be equal to the width of the outer cover 121 where the sleeve portion 1211 is not opened. This allows the inner cover 122 and the outer cover 121 to share a horizontal space, thereby further reducing the waste of space.

[0134] The lower end of the inner cover 122 can be at the same height from the ground as the lower end of the bottom cover 130. This makes it less likely for the hand to come into contact with the auxiliary cutting blade, thereby protecting the user's hand, reducing the possibility of the auxiliary cutting blade causing injury to the hand during handling, and improving the user's safety.

[0135] In one alternative implementation, the bottom cover 130 can be a U-shaped protective plate with both ends connected to the inner cover 122, and the middle of the U-shaped protective plate can be located below the auxiliary cutting blade.

[0136] For example, the U-shaped protective plate can be formed by bending steel strips. The two ends of the steel strips can be connected to the inner cover 122, and the middle of the steel strips can be located below the auxiliary cutting blade. That is, the two ends of the bottom cover 130 are positioned on opposite sides of the auxiliary cutting area SA. The bottom cover 130 is formed by bending steel strips, which not only reduces raw material costs, but its unique shape also facilitates accurate identification by hand touch. It also makes it easier for users to grip during handling, reducing the risk of slippage and improving operational stability.

[0137] In some other embodiments, the bottom cover 130 may also be a sheet metal plate, with both ends bent upwards and connected to the inner cover 122. The middle part of the sheet metal plate may be located below the auxiliary cutting member 113. Compared to steel strips, sheet metal plates have a larger force-bearing area when held in the hand, thereby improving comfort and enhancing the user experience.

[0138] Of course, the bottom cover 130 can also be other shapes, and this application embodiment does not impose any particular limitation on this. Similarly, the materials of components such as the side cover 120, the bottom cover 130, and the fixing bracket 111 can also be metal, plastic, glass, etc., to reduce manufacturing costs.

[0139] The auxiliary cutting unit 100 can cut weeds during operation. The auxiliary cutting module 110 can be protected laterally by the side cover 120 and the auxiliary cutting module 110 can be protected from the bottom by the bottom cover 130, thereby improving the service life and safety of the auxiliary cutting unit 100.

[0140] This application also provides a lawnmower, see embodiments thereof. Figure 7 In addition to the auxiliary cutting unit 100 mentioned above, the lawnmower may also include a main cutting unit 200, a body 300, and a traveling mechanism. The lawnmowers provided in this application embodiment are push lawnmowers, ride-on lawnmowers, stand-up lawnmowers, automatic lawnmower robots, self-propelled lawnmowers, etc.

[0141] The main cutting unit 200 can be located at the bottom of the body 300. The main cutting unit 200 can form a main cutting area MA during rotating mowing, and the main cutting area MA can cut the lawn below the body 300. The body 300 may include a main structure capable of mowing; in some embodiments, the body 300 may also include a shell protecting the main structure. An assembly area AA can be formed on one side of the body 300, and the auxiliary cutting unit 100 can be mounted on the assembly area AA. The travel mechanism may include rollers 400, which can drive the lawnmower to move.

[0142] Optionally, the main cutting unit 200 may include a main blade disc 210, on which main cutting elements 211 are detachably connected. The main blade disc 210 can drive the main cutting elements 211 to rotate, forming a main cutting area MA to cut the lawn at the bottom of the lawnmower. There can be multiple main cutting elements 211, which can be equidistant from each other to improve the stability of the main blade disc 210 during rotation. It is understood that... Figure 7 The following description uses the main cutting component 211 as the main cutting blade. In some embodiments, the main cutting component 211 can also be a straw rope.

[0143] The main cutting unit 200 includes at least one main blade disc 210. When there is only one main blade disc 210, it can be located directly below the machine body 300. When there are multiple main blade discs 210, such as two, they can be arranged horizontally along the mower, with gaps between adjacent main blade discs 210 to improve cutting efficiency. This embodiment of the application is described using an example where the main cutting unit 200 includes one main blade disc 210.

[0144] In some embodiments, the main blade disc 210 may further include a main blade disc guard 212, which may be located below the main blade disc 210. This guard protects the main blade disc 210, reducing wear on the fasteners fixing the main cutting element 211, and also reduces the increased rotational resistance of the main cutting element 211 caused by grass clippings. Optionally, the cable may be positioned between the machine body 300 and the main blade disc guard 212 to prevent interference between the cable and the main blade disc 210 or other components, thereby improving the space utilization and safety of the lawnmower.

[0145] The auxiliary cutting unit 100 can be installed in the assembly area AA on one side of the body 300 so that the auxiliary cutting area SA is different from the main cutting area MA. Through the above implementation method, the lawn that cannot be cut by the main cutting area MA, such as weeds around obstacles, can be cut by the auxiliary cutting unit 100, thereby increasing the cutting area of ​​the lawnmower, enabling the lawnmower to cover the lawn more comprehensively, expanding the application scenarios of the lawnmower, and thus improving the cutting efficiency and practicality of the lawnmower.

[0146] In some embodiments, see Figure 7 and Figure 8 In the lateral direction, the horizontal distance between the center of the main cutting area MA and the center of the auxiliary cutting area SA can be less than the sum of the radii of the main cutting area MA and the auxiliary cutting area SA. This ensures that weeds will not be missed from the gap between the auxiliary cutting area SA and the main cutting area MA on the cutting path of the mower in the direction of movement, thereby improving cutting efficiency.

[0147] In the direction of movement, the horizontal distance between the center of the main cutting area MA and the center of the auxiliary cutting area SA can be less than the sum of the radii of the main cutting area MA and the auxiliary cutting area SA, so that the lawnmower will not miss any cuts when making lateral cuts.

[0148] In some embodiments, the auxiliary cutting unit 100 is detachably mounted in the assembly area AA, allowing for easy disassembly when maintenance or replacement is required, reducing the difficulty and time of maintenance work and improving work efficiency. In some embodiments, the assembly area AA may be located on the side of the machine body 300, facilitating the user to assemble or disassemble the auxiliary cutting unit 100 from the side or top of the machine body 300, thus improving assembly and disassembly efficiency. The assembly area AA is located in... Figure 9 On the left side of the mower, that is, in the direction of the mower's movement, the assembly area AA can be located on the right side of the mower.

[0149] Compared to placing the assembly area AA on the left side of the lawnmower, positioning it on the right side is more in line with the user's movement and observation habits, reducing user fatigue and discomfort during use. When the lawnmower is rear-wheel drive, the assembly area AA can be located at the front right for easier user observation. Of course, in the forward direction of the lawnmower, the assembly area AA can also be located on the left side of the body 300; the specific position can be set according to actual needs, and this embodiment does not impose any particular limitations on this.

[0150] In one alternative implementation, see [reference] Figure 6 , Figure 9 and Figure 10 The first side of the assembly area AA can be provided with a first mounting structure 310, and the second side of the auxiliary cutting module 110 can be provided with a second mounting structure 1112 that cooperates with the first mounting structure 310. The first side and the second side can be opposite each other. The second side of the auxiliary cutting module 110 can be located on the top side or the outside of the auxiliary cutting unit 100, depending on actual needs. For example, taking the first side of the assembly area as the bottom side of the body 300, the second side of the auxiliary cutting module 110 can be the top side of the auxiliary cutting module 110, so that the auxiliary cutting unit 100 can be disassembled and assembled after the lawnmower is flipped. When the first side of the assembly area is the outside of the body 300, the second side of the auxiliary cutting module 110 can be the outside of the auxiliary cutting unit 100, so that the auxiliary cutting unit 100 can be disassembled and assembled without flipping the lawnmower.

[0151] Compared to multi-side installation, by concentrating the first mounting structure 310 of the assembly area AA on the first side and the second mounting structure 1112 of the auxiliary cutting unit 100 on the second side, common-side installation can be achieved. This helps to reduce installation errors. Furthermore, common-side installation can reduce multi-angle operation by users and reduce obstruction of vision, thereby reducing the difficulty of disassembly and assembly, improving the efficiency of disassembly and assembly of the first mounting structure 310 and the second mounting structure 1112, and improving the maintainability of the auxiliary cutting unit 100.

[0152] The number of first mounting structures 310 can be multiple, and the specific number can be set according to needs. The figure shows four as an example. The first mounting structure 310 and the second mounting structure 1112 can be connected by fixing methods such as connectors, snap-fit ​​fixing, pin fixing, and magnetic fixing. For example, the first mounting structure 310 may include a first threaded hole 311, and the second mounting structure 1112 may include a second threaded hole 11121 aligned with the first threaded hole 311. The lawnmower may also include a connector 320, which can be a screw. The first mounting structure 310 and the second mounting structure 1112 can be connected by the connector 320 passing through the first threaded hole 311 and the second threaded hole 11121, thereby improving the firmness of the connection between the auxiliary cutting unit 100 and the body 300 and improving the reliability of the lawnmower.

[0153] The detachable design of the first mounting structure 310 of the assembly area AA and the second mounting structure 1112 of the auxiliary cutting unit 100 facilitates the modular design of the auxiliary cutting unit 100. Even after the auxiliary cutting unit 100 is upgraded or improved, it can still be mounted on the body 300 without modifying the assembly area AA, thereby improving the practicality and applicability of the auxiliary cutting unit 100.

[0154] The lawnmower's control mechanism can control the working state of the traveling mechanism, thereby controlling the lawnmower's movement. In one alternative implementation, see [reference needed]. Figure 7 and 11 The traveling mechanism may include rollers 400, which may be located at the rear end of the lawnmower in the direction of movement of the lawnmower. There may be a gap between the side guard 120 and the rollers 400 in the direction of movement and / or the lateral direction of the lawnmower.

[0155] In one alternative implementation, in the direction of movement of the lawnmower, the inner cover 122 can be located at the front end of the roller 400, and a first gap A can be present between the rear end of the inner cover 122 and the front end of the roller 400. For example, the first gap A can be 10-50 mm. The rear end of the outer cover 121 can extend to the outside of the roller 400, meaning that the outer cover 121 and the roller 400 can overlap in the direction of movement of the lawnmower, with an overlap distance S3 of 15-30 mm. In the transverse direction, a second gap B can be present between the inner sidewall of the rear end of the outer cover 121 and the outer side of the roller 400, with the second gap B being 8-30 mm.

[0156] By setting the first gap A, the second gap B, and the overlap distance S3 between the outer cover 121 and the roller 400, the scraping, wear, and even damage caused by the close contact between the parts can be reduced, the roller 400 can be protected laterally, and the normal rotation of the roller 400 will not be affected, thereby improving the reliability of the lawnmower.

[0157] In some embodiments, the lateral width of the overlapping area between the outer cover 121 and the roller 400 can be smaller than the width of the non-overlapping area to ensure the normal rotation of the roller 400.

[0158] In one alternative implementation, see [reference] Figure 7 The front end of the body 300 may be provided with a front shield 500, which may include a collision strip to protect the body 300. A sensing component (not shown) may be installed between the front shield 500 and the body 300. This sensing component generates an electrical signal when the front shield 500 collides with the body and transmits the signal to the control mechanism. The control mechanism can then control the driving mechanism to stop the lawnmower from moving based on the electrical signal. The sensing component may be a Hall effect sensor, an anisotropic magnetoresistive sensor, or a tunnel magnetoresistive sensor, etc.

[0159] See Figure 7 and Figure 11In the direction of movement and / or lateral direction of the lawnmower, the front shield 500 may have a gap with the side shield 120. In an alternative implementation, in the direction of movement of the lawnmower, the inner shield 122 may be located at the rear end of the front shield 500, and a third gap C may exist between the front end of the inner shield 122 and the rear end of the front shield 500, exemplarily, the third gap C may be 12-18 mm. The front end of the outer shield 121 may extend to the outside of the front shield 500, that is, the outer shield 121 and the front shield 500 have an overlapping area in the direction of movement of the lawnmower, and the overlap distance S4 between the outer shield 121 and the front shield 500 may be 20-70 mm. In the lateral direction of the lawnmower, a fourth gap D may exist between the inner sidewall of the front end of the outer shield 121 and the outer sidewall of the rear end of the front shield 500, the fourth gap D may be 2-10 mm.

[0160] By providing a third gap C between the front end of the inner shield 122 and the rear end of the front shield 500, damage to the inner shield 122 can be reduced in the event of an impact to the front shield 500. Since the outer shield 121 overlaps with the front shield 500 by a distance S4 in the direction of movement of the lawnmower, and a fourth gap D exists in the lateral direction, the sides of the front shield 500 can be protected, reducing damage to the front shield 500 caused by side obstacles.

[0161] Optionally, in the overlapping area of ​​the outer cover 121 and the front cover 500, the lateral width of the outer cover 121 can be gradually reduced along the forward direction of the lawnmower, thereby reducing the resistance encountered by the lawnmower during cutting.

[0162] In some embodiments, the lower end of the outer cover 121 can be at the same ground height as the lower end of the front cover 500, which not only improves aesthetics but also facilitates user handling.

[0163] Through the above-described embodiments, the outer protective cover 121, inner protective cover 122, roller 400, and front protective cover 500, when used together, will not cause safety hazards due to large gaps, and will also reduce wear or collision damage. Furthermore, this facilitates the disassembly and assembly of the auxiliary cutting unit 100, improving assembly and disassembly efficiency.

[0164] By positioning the inner cover 122 between the roller 400 and the front cover 500, that is, the inner cover 122 is located at the gap between the roller 400 and the front cover 500, the spatial layout of the lawnmower can be optimized, making full use of the space between the roller 400 and the front cover 500, thereby improving the structural compactness of the lawnmower and thus improving space utilization.

[0165] It should be noted that the distance values ​​in the above embodiments, such as horizontal distance, overlap distance, and distance from the ground, can all be set as needed in actual products.

[0166] Considering that the width of the lawnmower is less than its length, to prevent accidental contact with the main cutting blade by hands or feet, in one optional implementation method, see [reference needed]. Figure 12 The main cutting unit 200 may include a main cutting disc 210 and a first cutting disc cover 220 and a second cutting disc cover 230 fixed above the main cutting disc 210.

[0167] In the lateral direction, the first cutter head guard 220 and the second cutter head guard 230 can be arranged opposite each other on both sides of the main cutter head 210. The first cutter head guard 220 and / or the second cutter head guard 230 can be provided with protective parts, and the lower end of the protective parts can be lower than the lower end of the main cutter head 210. The protective parts can provide lateral protection for the main cutter head 210 to prevent the user's hands and feet from directly contacting the main cutting blade.

[0168] Taking the example where both the first cutter head cover 220 and the second cutter head cover 230 are provided with protective parts, the protective parts can be integrally formed with the cutter head cover, see reference. Figure 12 The side of the first cutter head cover 220 away from the main cutter head 210 can be bent downwards to form a first protective part 221, and the side of the second cutter head cover 230 away from the main cutter head 210 can be bent downwards to form a second protective part 231. The ground clearance of the lower ends of the first protective part 221 and the second protective part 231 can be less than the ground clearance of either the first cutter head cover 220 or the second cutter head cover 230. The ground clearance of the lower ends of the first protective part 221 and the second protective part 231 can be the same to improve aesthetics.

[0169] By forming the first protective part 221 and the second protective part 231, the probability of the user being injured by accidentally touching the main cutting blade can be reduced, thereby improving the safety of the lawnmower. It can also block the splashes generated when the main cutting unit 200 is cutting, suppress the spread of splashes, and improve the operating environment.

[0170] The first protective part 221 can also be fixed to the first cutter head cover 220 by the connector 320, and the second protective part 231 is similar, so that the first protective part 221 and the second protective part 231 can be replaced when they are worn or damaged, thereby improving the service life of the lawnmower.

[0171] In some embodiments, the horizontal distance between the first protective part 221 and the second protective part 231 can gradually increase along the forward direction of the lawnmower, thereby facilitating grass gathering and concentrating more weeds at the bottom of the body 300 in the main cutting area MA, which can improve the cutting efficiency of the lawnmower.

[0172] The ground clearance of the auxiliary cutting component 113 and the ground clearance of the main cutting component 211 can be the same, for example, both can be 50-55mm. This can ensure the uniformity and consistency of the cutting effect and improve the aesthetics of the lawn after cutting.

[0173] For example, the mass of the auxiliary cutting blade can be the same as that of the main cutting blade, and the rotation speed of the auxiliary cutting blade can be greater than that of the main cutting blade. Since the rotation radius of the main cutting blade (from the rotation axis of the main cutting disc 210 to the center of mass of the main cutting blade) is greater than that of the auxiliary cutting blade (from the rotation axis of the auxiliary cutting module 110 to the center of mass of the auxiliary cutting blade), the kinetic energy of the auxiliary cutting blade is less than that of the main cutting blade, and the cutting radius of the main cutting blade is greater than that of the auxiliary cutting blade.

[0174] For example, the main cutting blade can have a rotational speed of 3000 r / min, a mass of 3.8g, and a rotation radius of 110mm, enabling the lawnmower to quickly process most of the lawn area, improving the overall operating efficiency of the lawnmower. Higher operating efficiency means shorter operating time, thus reducing the user's physical exertion and time costs. Considering that in some scenarios the grass at the lawn edge is thicker, the auxiliary cutting blade can have a mass of 3.8g, a rotational speed of 4500 r / min, and a rotation radius (from the rotation axis of the auxiliary cutting module 110 to the center of mass of the auxiliary cutting blade) of 50.8mm, allowing the kinetic energy of the auxiliary cutting blade to cut even thicker grass.

[0175] In some embodiments, the main cutting component 211 and the auxiliary cutting component 113 can have the same mass and size. By standardizing the specifications of the main cutting component 211 and the auxiliary cutting component 113, the cutting component can be installed on either the main cutting unit 200 or the auxiliary cutting unit 100, improving the interchangeability of the cutting component and reducing installation errors caused by confusion between different cutting components, thereby improving the user's work efficiency when replacing the cutting component. Furthermore, in special circumstances, such as when the main cutting component 211 of the main cutting unit 200 is damaged, the auxiliary cutting component 113 on the auxiliary cutting unit 100 can be used for temporary replacement to ensure that the mowing operation can continue. Of course, the mass and size of the main cutting component 211 and the auxiliary cutting component 113 can also be different, and the specific selection can be made according to actual needs. This application embodiment does not impose any particular limitation on this.

[0176] The first cutter head cover 220 can be disposed on the same side as the assembly area AA. The first cutter head cover 220 is detachably connected to the machine body 300 and / or the second cutter head cover 230, which concentrates the detachable parts on the same side of the machine body 300, thereby eliminating the need to detour around the lawnmower during assembly and disassembly, thus improving assembly and disassembly efficiency. In some embodiments, the second cutter head cover 230 can also be detachably connected to the machine body 300.

[0177] In some embodiments, the first cutter head cover 220 can be detachably connected to the second cutter head cover 230 via a second detachable structure. Similar to the first detachable structure, the second detachable structure can also be a sleeve structure, a hook and latch structure, a screw and bolt structure, or a magnetic structure, etc. The first detachable structure can be a part of the first cutter head cover 220 and / or the second cutter head cover 230, or it can be an independent structural component.

[0178] For example, a groove 232 may be formed on the side of the second cutter head cover 230 near the first cutter head cover 220, and a plug-in portion 222 may be formed on the side of the first cutter head cover 220 near the second cutter head cover 230. The plug-in portion 222 can be inserted into the groove 232. This not only facilitates the disassembly and assembly of the first cutter head cover 220, but also reduces the gap distance at the splice of the first cutter head cover 220 and the second cutter head cover 230, thereby reducing the entry of grass clippings and other debris into the machine body 300 and affecting the normal operation of the lawnmower.

[0179] Optionally, to improve the fixing reliability of the first cutter head cover 220 and the second cutter head cover 230, corresponding fixing holes can be provided on the first cutter head cover 220, the second cutter head cover 230 and / or the machine body 300, so that the first cutter head cover 220 and the second cutter head cover 230 can be fixed on the machine body 300 by the connector 320.

[0180] For example, a first fixing hole 2221 may also be formed on the plug portion 222, and correspondingly, a second fixing hole 2321 may also be formed on the groove 232. After the first cutter head cover 220 is inserted into the second cutter head cover 230, a fastener may be used to pass through the first fixing hole 2221 and the second fixing hole 2321 to fix the first cutter head cover 220 and the second cutter head cover 230 to the machine body.

[0181] Considering that when the lawnmower simultaneously drives the main cutting unit 200 and the auxiliary cutting unit 100 to cut grass, if the first blade guard 220 is installed on the machine body 300, it will cause interference.

[0182] In one alternative implementation, the auxiliary cutting unit 100 and the first cutter head cover 220 may be optionally mounted on the machine body 300. For example, see [reference needed]. Figure 7When the auxiliary cutting unit 100 is installed on the machine body 300, the first cutter head cover 220 can be in a detached state, that is, the first cutter head cover 220 is not installed on the machine body 300 or the second cutter head cover 230. (See also...) Figure 12 When the first blade cover 220 is installed on the machine body 300 or the second blade cover 230, the auxiliary cutting unit 100 is in a disassembled state, that is, the auxiliary cutting unit 100 is not installed on the machine body 300. This can reduce the occurrence of missed cuts and improve cutting efficiency when the main cutting unit 200 and the auxiliary cutting unit 100 are driven simultaneously for mowing. When the main cutting unit 200 is driven alone or when no mowing operation is performed, the first blade cover 220 can be installed above the main blade 210 and connected to the machine body 300 or the second blade cover 230, thereby reducing the risk of accidental injury to the main cutting blades from hands or feet that may be accidentally inserted into the first blade cover 220.

[0183] Optionally, see Figure 14 The lawnmower may also include partial side guards 600. Specifically, the lawnmower can have a first state and a second state. In the first state, the auxiliary cutting unit 100 can be installed in the assembly area AA, and the first blade guard 220 is not fixed to the body 300 or the second blade guard 230. This facilitates the cutting by the auxiliary cutting unit 100. (See reference...) Figure 7 In the second configuration, the partial side guard 600 can be installed in assembly area AA, thereby improving the safety of the lawnmower. (See [reference needed]). Figure 14 .

[0184] Through the above implementation method, in the first state, the lawn can be finely trimmed in the edge area of ​​the machine body, improving cutting efficiency and aesthetics. In the second state, large areas of lawn can be quickly trimmed, enabling the lawnmower to have multi-functional operation capabilities and improving the lawnmower's functional flexibility and adaptability to working conditions.

[0185] Optionally, see Figure 14 In the direction of movement of the lawnmower, the partial side guard 600 can be located at the front end of the roller 400, and a fifth gap E can exist between the partial side guard 600 and the front end of the roller 400. For example, the fifth gap E can also be 12-18mm. The partial side guard 600 can be located at the rear end of the front guard 500, and a sixth gap F can exist between the front end of the partial side guard 600 and the rear end of the front guard 500. For example, the sixth gap F can be 12-18mm.

[0186] The above-described implementation method facilitates the disassembly of the partial side cover 600 and reduces interference between components, thereby improving the reliability of the lawnmower.

[0187] See Figure 9and Figure 15 The partial side shield 600 may be provided with a third mounting structure 610 that matches the first mounting structure 310. Each third mounting structure 610 may be located on the third side of the partial side shield 600, and the third side of the partial side shield 600 may be positioned opposite to the first side of the assembly area AA. The number of third mounting structures 610 may be the same as the number of first mounting structures 310 to facilitate alignment.

[0188] In other words, the assembly area AA corresponds to the auxiliary cutting unit 100 and the partial side guard 600 in a one-to-two manner. This means that only one installation position (assembly area AA) needs to be reserved on the machine body 300 to accommodate the installation of the auxiliary cutting unit 100 and the partial side guard 600, thereby improving the space utilization and practicality of the lawnmower. The shared-side installation method also reduces installation difficulty, thus improving installation efficiency.

[0189] It should be noted that the terms "first side," "second side," and "third side" in the embodiments of this application are only used for distinction, and those skilled in the art will understand that the words "first," "second," etc., do not limit the quantity or execution order.

[0190] The third mounting structure 610 may include a third threaded hole 611 that aligns with the first threaded hole 311. The first mounting structure 310 and the third mounting structure 610 may be connected by a connector 320 passing through the first threaded hole 311 and the third threaded hole 611. This not only facilitates disassembly by the user but also improves the firmness of the connection between the partial side guard 600 and the machine body 300, thereby enhancing the reliability of the lawnmower.

[0191] In some embodiments, the third mounting structure 610 may also be different from the first mounting structure 310. For example, the partial side shield 600 may include two third threaded holes 611. One of the third threaded holes 611 can be connected to the machine body via a connector 320 with the first threaded hole 311, and the other third threaded hole 611 can be connected to the rear end of the front shield 500 via a connector 320, thereby improving the structural stability and disassembly efficiency of the partial side shield 600.

[0192] By installing the main cutting unit at the bottom of the machine, the main cutting area of ​​the main cutting unit can be used to cut the lawn under the mower. An assembly area is formed on one side of the machine, where an auxiliary cutting unit is installed to cut grass that the main cutting unit cannot reach or grass around obstacles. Side and bottom guards prevent injury to personnel during handling or when hands or feet are placed under the mower, thus reducing operational risks and improving the safety of the mower.

[0193] This application also provides another lawnmower, see [link / reference] Figure 14 The lawnmower may include a main cutting unit 200, a body 300, a travel mechanism, and partial side guards 600. The relevant technical features of the main cutting unit 200 and the body 300 can be found in the above embodiments and will not be repeated here.

[0194] See Figure 14 The partial side guard 600 can be installed on the assembly area AA. The partial side guard 600 can reduce the risk of injury to the user and improve the safety of the lawnmower. The assembly area AA can be provided with a first mounting structure 310, and the partial side guard 600 can be provided with a third mounting structure 610. The first mounting structure 310 can be matched with the third mounting structure 610, so that the partial side guard 600 can be fixed to the machine body 300.

[0195] The first mounting structure 310 can be concentrated on the first side of the assembly area AA, and the third mounting structure 610 can be concentrated on the third side of the partial side cover 600. The first side can be opposite to the third side, which makes it easier to fix the partial side cover 600 to the assembly area AA and reduces the difficulty of disassembly and assembly.

[0196] The first mounting structure 310 may include a first threaded hole 311, and the third mounting structure 610 may include a third threaded hole 611 aligned with the first threaded hole 311. The first mounting structure 310 and the third mounting structure 610 may be connected by a connector 320 passing through the first threaded hole 311 and the third threaded hole 611. This not only facilitates disassembly by the user but also improves the firmness of the connection between the partial side guard 600 and the machine body 300, thereby enhancing the reliability of the lawnmower.

[0197] In an alternative implementation, the lawnmower may further include an auxiliary cutting unit 100. The lawnmower has a first state and a second state. In the first state, see [reference needed]. Figure 7 The auxiliary cutting unit 100 can be installed in the assembly area AA. In the second state, see [reference]. Figure 14 The partial side guard 600 can be installed in the assembly area AA, so that it can be adapted to the function of the lawnmower according to the usage scenario.

[0198] Specifically, in the first state, it can effectively trim the lawn along the edge of the machine body 300, improving cutting efficiency and aesthetics. In the second state, it can quickly trim large areas of lawn, thus enabling the lawnmower to flexibly meet diverse needs and improving its functional flexibility and adaptability to different working conditions. Furthermore, by mounting the auxiliary cutting unit 100 and the partial side guard 600 under the assembly area AA in different states, the weight on the side where the assembly area AA is located can be balanced, improving the lawnmower's stability.

[0199] By setting the auxiliary cutting unit 100 and the partial side cover 600 to be detachably connected to the assembly area AA, the auxiliary cutting unit 100 and the partial side cover 600 can share the same assembly area AA, reducing structural redundancy. The independent replacement of the auxiliary cutting unit 100 and the partial side cover 600 can also improve the overall service life of the lawnmower and effectively enhance the practicality of the lawnmower.

[0200] The auxiliary cutting unit 100 may include an auxiliary cutting module 110, a side guard 120, and a bottom guard 130. The side guard 120 is disposed on the outside of the auxiliary cutting module 110, and the bottom guard 130 is disposed on the bottom of the auxiliary cutting module 110. By providing the side guard 120 and the bottom guard 130, the auxiliary cutting module 110 can be protected from the side and the bottom, thereby improving the safety of the lawnmower.

[0201] The side guard 120 may include an outer guard 121 and an inner guard 122. The inner guard 122 may be located between the outer guard 121 and the auxiliary cutting module 110. The lower end of the outer guard 121 may be higher than the lower end of the inner guard 122. Through this embodiment, on the one hand, it allows the user to hold the lawnmower more securely and comfortably on the stepped structure formed by the height difference, helping the user to utilize the height difference between the outer guard 121 and the inner guard 122 to move or operate the lawnmower. On the other hand, it can effectively block the flying debris generated by the high-speed rotation of the auxiliary cutting module 110 during the cutting process, thereby reducing the risk of injury to people around the lawnmower from flying debris.

[0202] See Figure 4 , Figure 5 and Figure 7 The main cutting unit 200 may have a main cutting area MA, and the auxiliary cutting module 110 may have an auxiliary cutting area SA different from the main cutting area MA, which can improve the cutting efficiency of the lawnmower. In the width direction of the lawnmower, the bottom cover 130 is located inside the inner cover 122, and the distance S1 between the bottom cover 130 and the inner cover 122 can be 10-25mm. In the vertical direction, the distance S2 between the bottom cover 130 and the auxiliary cutting element 113 of the auxiliary cutting module 110 is 2-8mm. Through the above implementation, the risk of user hand injury can be further reduced by utilizing the distance design.

[0203] Assembly area AA may be provided with a first mounting structure 310, which may be located on the first side of assembly area AA. Auxiliary cutting module 110 may be provided with a second mounting structure 1112 that cooperates with the first mounting structure AA, which may be located on the second side of auxiliary cutting module 110. The first side and the second side may be opposite each other. Through the above implementation, the assembly area AA, auxiliary cutting unit 100 and partial side cover 600 can be disassembled and assembled efficiently, thereby realizing the modular replacement of auxiliary cutting unit 100 and partial side cover 600.

[0204] Optionally, the traveling mechanism may include rollers 400, see [reference] Figure 11 In the direction of movement of the lawnmower, the roller 400 can be located at the rear end of the lawnmower, and the inner cover 122 can be located at the front end of the roller 400. A first gap A can exist between the rear end of the inner cover 122 and the front end of the roller 400. The rear end of the outer cover 121 can extend to the outside of the roller 400, and a second gap B can exist between the inner sidewall of the rear end of the outer cover 121 and the outside of the roller 400. The first gap A can be 10-50 mm, and the second gap B can be 8-30 mm. In the direction of movement of the lawnmower, the overlap distance S3 between the outer cover 121 and the roller 400 is 15-30 mm. Through the above implementation, the normal rotation of the roller 400 can be ensured, mutual interference between components can be reduced, and the reliability of the lawnmower can be improved.

[0205] Optionally, see Figure 7 and Figure 11 The lawnmower may also include a front shield 500, and there may be a gap between the front shield 500 and the side shields 120 in the direction of movement and / or lateral direction of the lawnmower. Specifically, in the direction of movement of the lawnmower, the inner shield 122 may be located at the rear end of the front shield 500, and a third gap C may exist between the front end of the inner shield 122 and the rear end of the front shield 500. The front end of the outer shield 121 may extend to the outside of the front shield 500. In the lateral direction of the lawnmower, there is a fourth gap D between the inner sidewall of the front end of the outer shield 121 and the outer sidewall of the rear end of the front shield 500. For example, the third gap C may be 12-18 mm, the fourth gap D may be 2-10 mm, and the overlap distance S4 between the outer shield 121 and the front shield 500 in the direction of movement of the lawnmower may be 20-70 mm. The above-described embodiments not only reduce the impact of the front shield 500 on the auxiliary cutting unit 100 during a collision, but also facilitate the assembly and disassembly of the auxiliary cutting unit 100.

[0206] Optionally, see Figure 14In the direction of movement of the lawnmower, the partial side guard 600 can be located at the front end of the roller 400, and a fifth gap E can exist between it and the front end of the roller 400. For example, the fifth gap E can be 12-18 mm. Optionally, the partial side guard 600 can be located at the rear end of the front guard 500, and a sixth gap F can exist between the front end of the partial side guard 600 and the rear end of the front guard 500. For example, the sixth gap F can be 12-18 mm. Through the above embodiments, the partial side guard 600 can be easily disassembled.

[0207] In some embodiments, the third mounting structure 610 may also be different from the first mounting structure 310. For example, the partial side shield 600 may include two third threaded holes 611. One of the third threaded holes 611 may be connected to the body 300 via a connector 320, and the other third threaded hole 611 may be connected to the rear end of the front shield 500 via a connector 320, thereby improving the structural stability and disassembly efficiency of the partial side shield 600.

[0208] In one alternative implementation, the main cutting unit 200 includes a main blade disc 210. The specific technical features of the main blade disc 210 can be found in the foregoing embodiments. The main blade disc 210 may have a main cutting element 211. The cutting radius of the main cutting element 211 may be larger than the cutting radius of the auxiliary cutting element 113 of the auxiliary cutting unit. The rotational speed of the auxiliary cutting element 113 may be greater than the rotational speed of the main cutting element 211 of the main blade disc 210. The kinetic energy of the auxiliary cutting element 113 is less than the kinetic energy of the main cutting element 211. Through the above implementation, the lawnmower can quickly process most of the lawn area, improving the overall operating efficiency of the lawnmower, and the auxiliary cutting element 113 can have sufficient kinetic energy to cut even thicker grass.

[0209] It should be noted that the rotational speeds of the main cutting component 211 and the auxiliary cutting component 113 can be set by the control mechanism according to actual needs, and this application embodiment does not impose any particular limitations on this. Furthermore, this application embodiment provides multiple implementation methods to meet application requirements under different conditions. Concepts or processes that are the same or similar may not be repeated in this embodiment, and other content not described can be referred to in other embodiments.

[0210] It should be understood that in the description of this application and the appended claims, the terms "comprising," "including," "having," and any variations thereof are intended to cover non-exclusive inclusion and mean "including but not limited to," unless otherwise specifically emphasized.

[0211] In the description of this application, unless otherwise stated, " / " indicates that the objects before and after are in an "or" relationship. For example, A / B can mean A or B. "And / or" in this application is used to describe the relationship between the related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. A and B can be singular or plural.

[0212] Furthermore, in the description of this application, unless otherwise stated, "multiple" means two or more. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple. Additionally, to facilitate a clear description of the technical solutions of the embodiments of this application, the terms "first," "second," etc., are used in the embodiments of this application to distinguish identical or similar items with substantially the same function and effect. Those skilled in the art will understand that the terms "first," "second," etc., do not limit the quantity or execution order, and that "first," "second," etc., do not necessarily imply difference.

[0213] In this application, unless otherwise expressly specified and limited, the terms "connection" and "linkage" should be interpreted broadly. For example, they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise expressly limited, those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0214] Furthermore, in the description of this application and the appended claims, the terms "first," "second," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein; features defined as "first" or "second" may explicitly or implicitly include at least one of those features.

[0215] In the embodiments of this application, the words "exemplarily" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplarily" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design solutions. Specifically, the use of the words "exemplarily" or "for example" is intended to present the relevant concepts in a specific manner.

[0216] References to "one embodiment" or "some embodiments" in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized.

[0217] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A lawnmower, characterized in that, include: The machine body, main cutting unit, travel mechanism, and auxiliary cutting unit; The main cutting unit is located at the bottom of the machine body, and the main cutting unit has a main cutting area; The driving mechanism is used to drive the lawnmower to move; An assembly area is formed on one side of the machine body, and the auxiliary cutting unit is installed in the assembly area; The auxiliary cutting unit includes an auxiliary cutting module, a side shield, and a bottom shield. The auxiliary cutting module has an auxiliary cutting area that is different from the main cutting area. The side shield is disposed on the outside of the auxiliary cutting module, and the bottom shield is disposed on the bottom of the auxiliary cutting module.

2. The lawnmower according to claim 1, characterized in that, The first side of the assembly area is provided with a first mounting structure, and the second side of the auxiliary cutting module is provided with a second mounting structure that cooperates with the first mounting structure. The second side and the first side are opposite to each other.

3. The lawnmower according to claim 1, characterized in that, The machine body is equipped with a transmission interface, which is electrically connected to the auxiliary cutting module.

4. The lawnmower according to claim 1, characterized in that, The main cutting unit includes a main cutting disc and a first cutting disc guard and a second cutting disc guard located above the main cutting disc; In the transverse direction of the lawnmower, the first blade guard and the second blade guard are arranged opposite to each other on both sides of the main blade; The first cutter head cover and / or the second cutter head cover are provided with a protective part, and the lower end of the protective part is less than the lower end of the main cutter head.

5. The lawnmower according to claim 4, characterized in that, The first cutter head cover is disposed on the same side as the assembly area, and the first cutter head cover is detachably connected to the machine body and / or the second cutter head cover.

6. The lawnmower according to claim 5, characterized in that, When the auxiliary cutting unit is installed on the machine body, the first cutter head cover is in a disassembled state.

7. The lawnmower according to claim 5, characterized in that, When the first cutter head cover is installed on the machine body or the second cutter head cover, the auxiliary cutting unit is in a disassembled state.

8. The lawnmower according to claim 5, characterized in that, The first cutter head cover is detachably connected to the second cutter head cover via a second detachable structure.

9. The lawnmower according to any one of claims 4-8, characterized in that, The main cutting disc includes a main cutting component, the cutting radius of which is greater than the cutting radius of the auxiliary cutting component of the auxiliary cutting module, the rotational speed of which is greater than the rotational speed of which is greater than that ...

10. The lawnmower according to claim 1, characterized in that, The side shield includes an outer shield and an inner shield, with the inner shield located between the outer shield and the auxiliary cutting module; the lower end of the outer shield is at a greater height from the ground than the lower end of the inner shield.

11. The lawnmower according to claim 10, characterized in that, The travel mechanism includes rollers, which are located at the rear end of the lawnmower in the direction of movement of the lawnmower. There is a gap between the side guard and the roller in the direction of movement and / or lateral direction of the lawnmower.

12. The lawnmower according to claim 11, characterized in that, In the direction of movement of the lawnmower, the inner cover is located at the front end of the roller, and there is a first gap between the rear end of the inner cover and the front end of the roller; the rear end of the outer cover extends to the outside of the roller. In the lateral direction of the lawnmower, there is a second gap between the inner sidewall of the rear end of the outer cover and the outer side of the roller.

13. The lawnmower according to claim 12, characterized in that, The first gap is 10-50mm, and the second gap is 8-30mm; In the direction of movement of the lawnmower, the overlap distance between the outer cover and the roller is 15-30mm.

14. The lawnmower according to claim 10, characterized in that, The front end of the fuselage is provided with a front protective cover; There is a gap between the front guard and the side guard in the direction of movement and / or lateral direction of the lawnmower.

15. The lawnmower according to claim 14, characterized in that, In the direction of movement of the lawnmower, the inner cover is located at the rear end of the front cover, and there is a third gap between the front end of the inner cover and the rear end of the front cover; the front end of the outer cover extends to the outside of the front cover. In the lateral direction of the lawnmower, there is a fourth gap between the inner sidewall of the front end of the outer cover and the outer sidewall of the rear end of the front cover.

16. The lawnmower according to claim 15, characterized in that, The third gap is 12-18mm, and the fourth gap is 2-10mm; In the direction of movement of the lawnmower, the overlap distance between the outer guard and the front guard is 20-70mm.

17. The lawnmower according to claim 10, characterized in that, The auxiliary cutting module also includes a fixing frame and an auxiliary cutting component fixed below the fixing frame; The inner protective cover is integrally formed with the fixing frame and is located outside the auxiliary cutting component; the bottom protective cover is fixed on the inner protective cover and is located below the auxiliary cutting component.

18. The lawnmower according to claim 17, characterized in that, In the lateral direction of the lawnmower, the bottom cover is located inside the inner cover, and the distance between the bottom cover and the inner cover is 10-25mm; In the vertical direction, the distance between the bottom cover and the auxiliary cutting component is 2-8 mm.

19. The lawnmower according to any one of claims 10-18, characterized in that, The outer protective cover and / or the inner protective cover are provided with a first detachable structure, and the outer protective cover and the inner protective cover are detachably connected through the first detachable structure.

20. The lawnmower according to claim 2, characterized in that, The lawnmower also includes partial side guards; The lawnmower has a first state and a second state. In the first state, the auxiliary cutting unit is installed in the assembly area; in the second state, the partial side guard is installed in the assembly area.

21. The lawnmower according to claim 20, characterized in that, The third side of the partial side shield is provided with a third mounting structure that cooperates with the first mounting structure, and the third side is opposite to the first side.

22. An auxiliary cutting unit, characterized in that, The auxiliary cutting unit can be installed on a lawnmower; The auxiliary cutting unit includes an auxiliary cutting module, a side cover, and a bottom cover. The side cover is disposed on the outside of the auxiliary cutting module, and the bottom cover is disposed on the bottom of the auxiliary cutting module.

23. The auxiliary cutting unit according to claim 22, characterized in that, The side shield includes an outer shield and an inner shield, with the inner shield located between the outer shield and the auxiliary cutting module; The lower end of the outer protective cover is at a greater height from the ground than the lower end of the inner protective cover.

24. The auxiliary cutting unit according to claim 23, characterized in that, The auxiliary cutting module also includes a fixing frame and an auxiliary cutting component fixed below the fixing frame; the inner cover is integrally formed with the fixing frame and is located outside the auxiliary cutting component; the bottom cover is fixed on the inner cover and is located below the auxiliary cutting component.

25. The auxiliary cutting unit according to claim 24, characterized in that, In the lateral direction, the bottom cover is located inside the inner cover, and the distance between the bottom cover and the inner cover is 10-25mm; In the vertical direction, the distance between the bottom cover and the auxiliary cutting component is 2-8 mm.

26. The auxiliary cutting unit according to claim 23, characterized in that, The outer protective cover and / or the inner protective cover are provided with a first detachable structure, and the outer protective cover and the inner protective cover are detachably connected through the first detachable structure.

27. The auxiliary cutting unit according to any one of claims 22-26, characterized in that, The lawnmower is equipped with a transmission interface, which is electrically connected to the auxiliary cutting module.

28. A lawnmower, characterized in that, include: The fuselage, main cutting unit, travel mechanism, and partial side shields; The main cutting unit is located at the bottom of the machine body, and the main cutting unit has a main cutting area; The driving mechanism is used to drive the lawnmower to move; An assembly area is formed on one side of the fuselage, and the partial side cover is installed in the assembly area.

29. The lawnmower according to claim 28, characterized in that, The lawnmower also includes an auxiliary cutting unit; The lawnmower has a first state and a second state. In the first state, the auxiliary cutting unit is installed in the assembly area; in the second state, the partial side guard is installed in the assembly area.

30. The lawnmower according to claim 29, characterized in that, The auxiliary cutting unit includes an auxiliary cutting module, a side cover, and a bottom cover. The side cover is disposed on the outside of the auxiliary cutting module, and the bottom cover is disposed on the bottom of the auxiliary cutting module.

31. The lawnmower according to claim 30, characterized in that, The first side of the assembly area is provided with a first mounting structure, and the second side of the auxiliary cutting module is provided with a second mounting structure that cooperates with the first mounting structure. The second side and the first side are opposite to each other.

32. The lawnmower according to claim 31, characterized in that, The third side of the partial side shield is provided with a third mounting structure that cooperates with the first mounting structure, and the third side is opposite to the first side.

33. The lawnmower according to any one of claims 30-32, characterized in that, The machine body is equipped with a transmission interface, which is electrically connected to the auxiliary cutting module.

34. The lawnmower according to claim 30, characterized in that, The side shield includes an outer shield and an inner shield. The inner shield is located between the outer shield and the auxiliary cutting module. The lower end of the outer shield is higher than the lower end of the inner shield.

35. The lawnmower according to claim 34, characterized in that, In the lateral direction of the lawnmower, the bottom cover is located inside the inner cover, and the distance between the bottom cover and the inner cover is 10-25mm; In the vertical direction, the distance between the bottom cover and the auxiliary cutting component of the auxiliary cutting module is 2-8mm.

36. The lawnmower according to claim 34, characterized in that, The travel mechanism includes rollers, which are located at the rear end of the lawnmower in the direction of movement of the lawnmower. The inner protective cover is located at the front end of the roller, and there is a first gap between the rear end of the inner protective cover and the front end of the roller; The rear end of the outer cover extends to the outside of the roller, and there is a second gap between the inner sidewall of the rear end of the outer cover and the outside of the roller.

37. The lawnmower according to claim 36, characterized in that, The first gap is 10-50mm, and the second gap is 8-30mm; In the direction of movement of the lawnmower, the overlap distance between the outer cover and the roller is 15-30mm.

38. The lawnmower according to any one of claims 34-37, characterized in that, The front end of the machine body is provided with a front guard; there is a gap between the front guard and the side guard in the direction of movement and / or lateral direction of the lawnmower.

39. The lawnmower according to claim 38, characterized in that, In the direction of movement of the lawnmower, the inner cover is located at the rear end of the front cover, and there is a third gap between the front end of the inner cover and the rear end of the front cover; the front end of the outer cover extends to the outside of the front cover. In the lateral direction of the lawnmower, there is a fourth gap between the inner sidewall of the front end of the outer cover and the outer sidewall of the rear end of the front cover.

40. The lawnmower according to claim 39, characterized in that, The third gap is 12-18mm, and the fourth gap is 2-10mm; In the direction of movement of the lawnmower, the overlap distance between the outer guard and the front guard is 20-70mm.

41. The lawnmower according to claim 36, characterized in that, In the direction of movement of the lawnmower, the partial side guard is located at the front end of the roller, and there is a fifth gap between the rear end of the partial side guard and the front end of the roller.

42. The lawnmower according to claim 41, characterized in that, The fifth gap is 12-18mm.

43. The lawnmower according to claim 38, characterized in that, In the direction of movement of the lawnmower, the partial side guard is located at the rear end of the front guard, and there is a sixth gap between the front end of the partial side guard and the rear end of the front guard.

44. The lawnmower according to claim 43, characterized in that, The sixth gap is 12-18mm.

45. The lawnmower according to claim 29, characterized in that, The main cutting unit includes a main cutting disc and a first cutting disc guard and a second cutting disc guard located above the main cutting disc; In the lateral direction of the lawnmower, the first blade guard and the second blade guard are arranged opposite each other on both sides of the main blade.

46. ​​The lawnmower according to claim 45, characterized in that, The first cutter head cover is disposed on the same side as the assembly area, and the first cutter head cover is detachably connected to the machine body and / or the second cutter head cover.

47. The lawnmower according to claim 46, characterized in that, The first cutter head cover is detachably connected to the second cutter head cover via a second detachable structure.

48. The lawnmower according to claim 46, characterized in that, When the auxiliary cutting unit is installed on the machine body, the first cutter head cover is in a disassembled state.

49. The lawnmower according to claim 46, characterized in that, When the partial side guard is installed on the machine body, the first cutter head guard is in the installed state.

50. The lawnmower according to any one of claims 45-49, characterized in that, The main cutting disc has a main cutting component, the cutting radius of which is greater than the cutting radius of the auxiliary cutting component of the auxiliary cutting unit, the rotational speed of which is greater than the rotational speed of which is greater than that ...

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