Lawn mowing kits and lawn mowers

Abstract

This application discloses a mowing assembly and a lawnmower. The mowing assembly is applied to a lawnmower. The mowing assembly includes a drive assembly, a blade assembly, and a blade guard assembly. The drive assembly includes an output section. The blade assembly is connected to the output section. The blade guard assembly is located on the side of the blade assembly facing away from the drive assembly. The blade guard assembly has a third mounting section. The blade guard assembly is detachably connected to the output section via the third mounting section. The mowing assembly is equipped with a blade guard assembly, which provides a certain degree of protection for the blade assembly, reduces the possibility of damage to the blade assembly caused by direct impact from obstacles, and improves the service life of the blade assembly. The blade guard assembly is detachably connected to the blade assembly, facilitating the replacement and maintenance of the components in the mowing assembly. Users can choose to assemble or not assemble the blade guard assembly, or assemble different blade guard assemblies according to actual needs, without affecting the structure of the mowing assembly or the mowing operation.

Description

Technical Field

[0001] This application relates to the field of lawn mowing equipment technology, and more particularly to a lawn mowing component and a lawn mower. Background Technology

[0002] With the continuous development of technology, lawnmowers are being used more and more widely in daily life and industry. Lawnmowers can be used in various places where there is a need for the maintenance of herbaceous plants, such as home gardens, parks, and golf courses, for trimming and tidying up herbaceous plants.

[0003] Users may have different requirements for lawnmower accessories (such as blade guards) depending on the application scenario and operational needs. Therefore, how to select appropriate accessories for lawnmower components without affecting their structure and normal operation is one of the research topics in the industry. Utility Model Content

[0004] To solve the above-mentioned technical problems, this application provides a lawn mowing assembly and a lawn mower with optional accessories that can be selected according to user needs.

[0005] This application is achieved through the following technical solution.

[0006] The first aspect of this application provides a mowing assembly for use in a lawnmower, the mowing assembly comprising: a drive assembly including an output section; a blade assembly connected to the output section; and a blade guard assembly located on the side of the blade assembly facing away from the drive assembly, the blade guard assembly having a third mounting section, the blade guard assembly being detachably connected to the output section via the third mounting section.

[0007] In some embodiments, the output section is provided with a first mounting section; the cutter head assembly is connected to the first mounting section; and the cutter guard assembly is detachably connected to the first mounting section via the third mounting section.

[0008] In some embodiments, the cutter head assembly includes a second mounting portion connected to the first mounting portion, and the cutter guard assembly is detachably connected to the first mounting portion via the third mounting portion and the second mounting portion.

[0009] In some embodiments, the output portion includes an output shaft and a third connector, the third connector being sleeved on the output shaft, and the first mounting portion being disposed on the third connector.

[0010] In some embodiments, the third connector includes a connecting flange.

[0011] In some embodiments, the blade guard assembly includes a blade guard and a connecting assembly, the connecting assembly being detachably connected to the output section, the blade guard being located on the side of the connecting assembly facing away from the drive assembly, and being connected to the connecting assembly.

[0012] In some embodiments, the connection assembly includes a first connector and a second connector, the first connector being detachably connected to the output portion, the second connector being rotatably connected to the first connector, and the blade guard being connected to the second connector.

[0013] In some embodiments, the first connector includes a first positioning part, the cutter head assembly includes a second positioning part, and when the first connector is connected to the output part, the second positioning part cooperates with the first positioning part for positioning.

[0014] In some embodiments, one of the first positioning part and the second positioning part includes a positioning hole, and the other includes a positioning boss.

[0015] In some embodiments, the connecting assembly further includes a bearing, and the second connecting member is rotatably connected to the first connecting member via the bearing.

[0016] In some embodiments, the number of bearings is multiple, and the multiple bearings are arranged at intervals along the axial direction of the output section, with shims provided between adjacent bearings.

[0017] In some embodiments, the blade guard is a one-piece molded structural component.

[0018] In some embodiments, the blade guard is disc-shaped, and its size is in the range of 0.5 mm to 2 mm along the axial direction of the output section.

[0019] In some embodiments, the cutter head assembly includes a cutter head body and a blade. The cutter head body is disc-shaped, and the blade is rotatably connected to the outer periphery of the cutter head body and can extend beyond the cutter head body. The radius of the guard disc is greater than or equal to the radius of the cutter head body and less than the cutting radius of the cutter head assembly.

[0020] In some embodiments, the cutter head assembly has a first operating hole, and the cutter guard assembly has a second operating hole. When the cutter guard assembly is installed on the output section, the distance between the center of the first operating hole, the center of the second operating hole and the axis of the output section is the same. The first operating hole includes a blade mounting hole.

[0021] In some embodiments, the mowing assembly further includes a protective member, the drive assembly is mounted on the protective member, the protective member is located on the side of the cutter head assembly facing away from the guard disc assembly, and covers the periphery of the cutter head assembly.

[0022] In some embodiments, the cutter head assembly has a third operating hole, the cutter guard assembly has a second operating hole, and the protective member has a fourth operating hole; the center of the third operating hole, the center of the second operating hole, and the center of the fourth operating hole are all equidistant from the axis of the output section.

[0023] In some embodiments, the projections of the second operating hole, the third operating hole, and the fourth operating hole are outside the projection range of the drive assembly in the same projection plane perpendicular to the axial direction of the output portion.

[0024] In some embodiments, the minimum distance between the cutter head assembly and the protective member along the axial direction of the output section is in the range of 10 mm to 50 mm.

[0025] In some embodiments, the minimum distance between the guard disc assembly and the cutter disc assembly along the axial direction of the output section is in the range of 5 mm to 20 mm.

[0026] A second aspect of this application provides a lawnmower comprising: a main body; and a mowing assembly according to a first aspect of this application, the mowing assembly being disposed on the main body.

[0027] Utility Model Effect

[0028] The lawn mowing assembly of this embodiment directly connects the blade guard assembly to the output of the drive assembly in a detachable manner, rather than connecting the blade guard assembly to the blade assembly. Therefore, the installation or absence of the blade guard assembly does not affect the installation and normal operation of the blade assembly. Thus, the lawn mowing assembly of this embodiment allows users to choose whether or not to equip the blade guard assembly, or to equip different blade guard assemblies, according to their actual needs. Furthermore, regardless of the selection method, it will not affect the structure of the lawn mowing assembly or the mowing operation. Attached Figure Description

[0029] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0030] Figure 1Exploded perspective view of a lawn mowing component provided for some embodiments of this application;

[0031] Figure 2 A schematic cross-sectional view of a lawn mowing assembly provided for some embodiments of this application, wherein the connecting assembly is not provided with a bearing;

[0032] Figure 3 Schematic cross-section of a lawnmower assembly provided for some embodiments of this application without the blade guard assembly. Figure 2 ;

[0033] Figure 4 A schematic cross-sectional view of a mowing assembly provided for some embodiments of this application, wherein the blade guard assembly is directly connected to the blade assembly;

[0034] Figure 5 A schematic cross-sectional view of a lawn mowing assembly provided for some embodiments of this application, wherein the connecting assembly is provided with a bearing;

[0035] Figure 6 A schematic cross-sectional view of a lawn mowing assembly provided for some embodiments of this application, wherein the link assembly is provided with two bearings;

[0036] Figure 7 A schematic bottom view of a cutter head assembly provided for some embodiments of this application;

[0037] Figure 8 A three-dimensional structural schematic diagram of the cutter head assembly, cutter guard assembly, and protective component provided for some embodiments of this application;

[0038] Figure 9 A schematic cross-sectional view of a lawn mowing assembly with protective features is provided for some embodiments of this application.

[0039] Explanation of reference numerals in the attached figures

[0040] 1. Drive assembly; 11. Output section; 11a. First mounting section; 111. Output shaft; 112. Third connecting member; 112a. Fourth positioning section; 2. Cutter head assembly; 21. Cutter head body; 22. Blade; 23. First bolt; 24. Second mounting section; 25. Second positioning section; 26. Third positioning section; 27. First operating hole; 28. Third operating hole; 3. Cutter guard assembly; 31. Cutter guard; 32. Connecting assembly; 321. First connecting member; 321a. First positioning section; 32 2. Second connecting part; 323. Bearing; 324. Gasket; 33. Second operating hole; 34. Third mounting part; 4. Third bolt; 5. Fixing tool; 6. Protective component; 61. Fourth operating hole; 7. Locking bolt; h1. Thickness of the blade guard; h2. Minimum distance between the blade disc assembly and the protective component; h3. Minimum distance between the blade guard assembly and the blade disc assembly; r1. Radius of the blade guard; r2. Radius of the blade body; r3. Cutting radius of the blade assembly; 100. Grass cutting assembly. Detailed Implementation

[0041] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having” and any variations thereof are intended to cover non-exclusive inclusion.

[0043] In the description of the embodiments of this application, technical terms such as "first," "second," and "third" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0044] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0045] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0046] In the description of the embodiments of this application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0047] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0048] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical term "contact" should be interpreted broadly, and can be direct contact, contact through an intermediate medium layer, contact between two contacting parties with substantially no interaction force, or contact between two contacting parties with interaction force.

[0049] Below, refer to Figures 1 to 9 Some embodiments of this application will be described in detail.

[0050] This application provides a lawn mowing assembly 100. The lawn mowing assembly 100 is applied to a lawnmower. The lawnmower can be used in various places where there is a need for herbaceous plant maintenance, such as home gardens, parks, and golf courses, for trimming and maintaining herbaceous plants. The lawnmower can, for example, cut and trim the grass of a lawn neatly.

[0051] For example, a lawnmower can be a self-moving device. That is, a lawnmower can automatically cut and trim the lawn without human intervention.

[0052] As another example, a lawnmower can also be a push-type device. That is, it relies on the user's manual pushing to cut and trim the lawn.

[0053] This application does not specifically limit the types of lawnmowers; any lawnmower capable of cutting and trimming herbaceous plants is within the scope of protection of this application.

[0054] In some embodiments, the lawnmower includes a main body and a mowing assembly 100. The mowing assembly 100 is disposed on the main body. The main body is the main support and load-bearing component of the lawnmower. The mowing assembly 100, power assembly, walking assembly, etc., of the lawnmower are all disposed on the main body.

[0055] An energy component is used to provide electrical power to a lawnmower. Exemplarily, the energy component can be a battery, photovoltaic panel, or the like that that provides electrical power. The energy component can also be a device that uses fuel to provide energy, such as an internal combustion engine. In some embodiments, the energy component includes a battery housed within a body.

[0056] The walking assembly enables the lawnmower to move across the work surface. For example, the walking assembly may include wheels.

[0057] The mowing assembly 100 is an important component that enables the lawnmower to cut and trim herbaceous plants. For example... Figure 1 and Figure 2 As shown, the mowing assembly 100 includes a drive assembly 1, a blade assembly 2, and a blade guard assembly 3.

[0058] The drive assembly 1 includes an output section 11. The cutter head assembly 2 is connected to the output section 11.

[0059] The drive assembly 1 is a structural component that provides power to the cutter head assembly 2, and the output unit 11 is used to output the power of the drive assembly 1. The cutter head assembly 2 is an actuating structural component of the mowing assembly 100 used for mowing operations. The cutter head assembly 2 is connected to the output unit 11 of the drive assembly 1 and can rotate under the drive of the drive assembly 1. The cutter head assembly 2 is usually equipped with blades 22. When the cutter head assembly 2 rotates under the drive of the drive assembly 1, it will drive the blades 22 to rotate together. When the rotating blades 22 come into contact with weeds or other herbaceous plants, they will cut the weeds, thus realizing the mowing operation.

[0060] For example, drive component 1 may include an electric drive component. The output power of the electric drive component is relatively stable and the structure is relatively simple. As a specific example, drive component 1 may include a motor.

[0061] As another example, the drive assembly 1 may include a fuel-driven assembly. The fuel-driven assembly has a large output power, which can drive the cutter head assembly 2 to perform grass-cutting operations efficiently.

[0062] Those skilled in the art should understand that the embodiments of this application do not specifically limit the type of the driving component 1.

[0063] like Figure 2 As shown, the cutter head assembly 2 includes a cutter head body 21 and blades 22. The cutter head body 21 provides a mounting and connection position for the blades 22. Exemplarily, the blades 22 can be connected to the cutter head body 21 via a first bolt 23. The output portion 11 of the drive assembly 1 is connected to the cutter head body 21. The cutter head body 21 rotates under the drive of the output portion 11 and can transmit power to the blades 22, thereby enabling the blades 22 to rotate at high speed and thus achieve the weeding operation. The blades 22 are used to cut weeds. In this embodiment, the cutter head body 21 is disc-shaped. In some other embodiments, the cutter head body 21 may also be any other suitable shape. This embodiment does not specifically limit the shape and size of the cutter head body 21, and can be designed according to actual needs.

[0064] In this embodiment, the blade 22 is rotatably connected to the outer periphery of the cutter head body 21. That is, the blade 22 can rotate relative to the cutter head body 21, thereby expanding the cutting range of the lawnmower and facilitating the replacement of the blade 22.

[0065] In addition, when the mowing assembly 100 cuts longer or tougher weeds, the rotating blade 22 can rotate flexibly with the tendency of the weeds to entangle, so that the weeds can be cut more smoothly and thrown away from the cutting area, reducing the possibility of the mowing assembly 100 getting stuck.

[0066] Of course, those skilled in the art should understand that in some embodiments, the blade 22 may also be fixedly connected to the outer periphery of the blade body 21, as long as the blade 22 can cut weeds.

[0067] In this embodiment, the blade 22 extends beyond the cutter head body 21. This means that when the blade 22 rotates relative to the cutter head body 21, the edge of the blade 22 can extend beyond the edge of the cutter head body 21. In other words, the rotation trajectory of the edge of the blade 22 is at least partially outside the edge of the cutter head body 21. That is, the distance from the axis of rotation of the blade 22 to the edge of the blade 22 is greater than the distance from the axis of rotation of the blade 22 to the edge of the cutter head body 21. Therefore, when the mowing assembly 100 is working, the blade 22 can cover a wider mowing width. This helps the lawnmower remove more weeds in the same amount of time, reducing the number of back-and-forth movements required when mowing large lawns, thereby improving mowing efficiency.

[0068] Furthermore, the well-designed extension of the blade 22 can reduce unnecessary energy consumption of the drive component 1 while ensuring effective mowing. Because there's no need to increase power to compensate for insufficient coverage of the blade 22 during mowing, the lawnmower becomes more energy-efficient, thus reducing operating costs.

[0069] For example, the number of blades 22 can be 2, 3, 4, 5, 6 or more. Multiple blades 22 are spaced apart along the circumferential direction of the cutter head body 21. This embodiment does not specifically limit the number of blades 22; it can be set according to the actual size of the cutter head body 21.

[0070] During the mowing operation, the blade assembly 2 may come into contact with weeds, soil, and other debris (such as small stones and branches) below, potentially causing wear and tear. Additionally, during high-speed rotation, the cut weeds may scatter. In areas with dense weeds and small stones, these stones may also scatter upon contact with the blade assembly 2. This scattering of weeds and debris can exert impact on the blade assembly 2 and even the drive assembly 1. Especially at high speeds, this debris can cause significant damage to the blade assembly 2 or the drive assembly 1, affecting the service life of the mowing assembly 100. Furthermore, the blade assembly 2 is prone to deformation under excessive external forces during high-speed rotation. For example, excessive localized stress may cause bending or twisting, potentially affecting the cutting performance of the mowing assembly 100.

[0071] In view of this, the lawn mowing assembly 100 of this application embodiment also includes a blade guard assembly 3. The blade guard assembly 3 is a protective accessory for the lawn mowing assembly 100. Figure 1 and Figure 2 As shown, the cutter guard assembly 3 is located on the side of the cutter head assembly 2 facing away from the drive assembly 1. Therefore, the cutter guard assembly 3 provides a certain degree of cushioning, protecting the cutter head assembly 2 from direct contact with weeds, debris, etc., below. Furthermore, during the operation of the cutter head assembly 2, splashed weeds and debris are blocked by the cutter guard assembly 3, reducing the possibility of damage to the cutter head assembly 2 due to impact. Moreover, the cutter guard assembly 3 also reduces the risk of debris splashing onto the drive assembly 1, thereby reducing the load on the drive assembly 1 or clogging it, allowing the drive assembly 1 to drive the cutter head assembly 2 more stably and reliably. In addition, the cutter guard assembly 3 also ensures more even force distribution on the cutter head assembly 2, maintaining its original shape during operation and thus maintaining good cutting performance.

[0072] For example, the cutter guard assembly 3 is capable of rotating relative to the cutter guard assembly 2.

[0073] As another example, the cutter guard assembly 3 can rotate together with the cutter guard assembly 2.

[0074] In this embodiment, the blade guard assembly 3 is provided with a third mounting portion 34. The blade guard assembly 3 is detachably connected to the output portion 11 via the third mounting portion 34.

[0075] For example, the third mounting part 34 may include mounting holes.

[0076] On the one hand, the detachable connection between the blade guard assembly 3 and the output unit 11 facilitates the replacement and maintenance of the mowing assembly 100. During the mowing process, both the blade assembly 2 and the blade guard assembly 3 may be subject to wear or damage. Since the blade guard assembly 3 and the blade assembly 2 are independent of each other, if one of them is damaged and needs replacement, the damaged component can be disassembled and replaced individually instead of replacing the entire assembly, thus helping to reduce maintenance costs. Moreover, the detachable design also makes it easier for users to clean the blade assembly 2 or the blade guard assembly 3. Users can separate the two to more easily remove grass clippings, dirt, and other debris, keeping the blade assembly 2 or the blade guard assembly 3 clean, which in turn helps to extend the service life of the blade assembly 2 or the blade guard assembly 3.

[0077] On the other hand, the detachable design makes it easier for users to adjust and adapt the mowing assembly 100. The detachable connection between the blade guard assembly 3 and the output unit 11 makes the blade guard assembly 3 an optional accessory. Users can choose to install the blade guard assembly 3 or not, depending on their actual needs. In this application, the blade guard assembly 3 is installed on the output unit 11, rather than on the blade assembly 2. This arrangement means that only an interface for connecting to the blade guard assembly 3 needs to be provided on the output unit 11, without the need for a connection interface on the blade assembly 2. Therefore, whether the blade guard assembly 3 is installed on the output unit 11 or not does not affect the structural design and normal operation of the blade assembly 2. The blade assembly 2 does not need to consider the connection interface with the blade guard assembly 3 during design, which simplifies the structural design of the blade assembly 2 and its overall axial dimensions, preventing the overall axial dimensions of the blade assembly 2 from being too large, which could lead to excessive bending moment transmitted to the motor shaft of the drive assembly 1 and cause deformation of the motor shaft.

[0078] Users may have different accessory requirements for the mowing assembly 100 depending on the application scenario and operational needs when using a lawnmower. For example, when the lawnmower is used in an environment with weeds and debris such as rocks and branches, equipping it with the blade guard assembly 3 can more effectively protect the blade assembly 2 and reduce the risk of damage from collisions with hard objects such as rocks. As another example, when the lawnmower is used to cut harder plants such as shrubs and reeds, the blade guard assembly 3 can reduce the possibility of damage to the blade assembly 2 due to large impacts, while also improving the cutting stability and safety of the mowing assembly 100.

[0079] For example, when the lawnmower is operating on flat, open lawns free of debris, or when cutting softer plants, the user can choose not to equip the blade guard assembly 3. This allows the blade guard assembly 2 to be used more efficiently, increasing the mowing speed.

[0080] Therefore, the detachable connection of the blade guard assembly 3 makes it easier for users to select whether to install the blade guard assembly 3 according to the actual mowing scenario. In addition, when users choose to install the blade guard assembly 3, they can also selectively install different types of blade guard assembly 3 according to different mowing scenarios (for example, install blade guard assembly 3 of different sizes), which helps to improve the versatility and flexibility of the mowing assembly 100.

[0081] Furthermore, the detachable connection of the blade guard assembly 3 makes the lawnmower easier to transport and store. For example, when the lawnmower needs to be transported or stored for a long time, the blade guard assembly 3 can be detached. This reduces the overall size of the lawnmower, thus saving transportation and storage space and making it easier to handle and store.

[0082] In some embodiments of this application, such as Figures 1 to 3 As shown, the output section 11 is provided with a first mounting section 11a. The cutter head assembly 2 is connected to the first mounting section 11a. The cutter guard assembly 3 is detachably connected to the first mounting section 11a via a third mounting section 34. Figure 2 A schematic cross-sectional view of the mowing assembly 100 with the blade guard assembly 3 is shown. Figure 3 An exemplary cross-sectional view of the mowing assembly 100 without the blade guard assembly 3 is shown.

[0083] In the embodiments of this application, from Figure 2 and Figure 3It can be seen that the blade guard assembly 3 and the blade disc assembly 2 share the same first mounting part 11a connected to the output part 11. In other words, whether the blade guard assembly 3 is installed or not, it will not affect or interfere with the structure of the output part 11 or the blade disc assembly 2. In other words, the mowing assembly 100 does not require additional mounting parts or changes to the structure of the output part 11 for the installation of the blade guard assembly 3.

[0084] In addition, the mowing assembly 100 will not affect the mowing operation of the blade assembly 2 regardless of whether the blade guard assembly 3 is installed.

[0085] Furthermore, the cutter head assembly 2 also includes a second mounting portion 24. The second mounting portion 24 is connected to the first mounting portion 11a. The cutter guard assembly 3 is detachably connected to the first mounting portion 11a via the third mounting portion 34 and the second mounting portion 24.

[0086] For example, the first mounting portion 11a may include a mounting hole, and the second mounting portion 24 may also include a mounting hole. The first mounting portion 11a and the second mounting portion 24 can be connected by bolts. Figure 3 As shown, when the mowing assembly 100 is not equipped with the blade guard assembly 3, bolts can pass through the second mounting portion 24 and the first mounting portion 11a to connect and fix the blade guard assembly 2 to the output portion 11. The first mounting portion 11a can be provided with threads for bolt engagement. Alternatively, the first mounting portion 11a can be unthreaded, and the bolt can engage with a nut. Figure 1 and Figure 2 As shown, when the mowing assembly 100 is equipped with the blade guard assembly 3, the blade guard assembly 3 may include a third mounting portion 34. The third mounting portion 34 may include mounting holes. Bolts can pass through the third mounting portion 34, the second mounting portion 24, and the first mounting portion 11a to connect and fix the blade head assembly 2 and the blade guard assembly 3 together to the output portion 11. The first mounting portion 11a may be provided with threads for bolt engagement. Of course, the first mounting portion 11a may also be unthreaded, with the bolt engaging with a nut. Thus, the blade head assembly 2 can be connected to the output portion 11 by the engagement of bolts and threads, or the blade head assembly 2 and the blade guard assembly 3 can be connected together to the output portion 11.

[0087] As another example, the first mounting portion 11a and the third mounting portion 34 may include a first magnetic element. The second mounting portion 24 may include a second magnetic element with a magnetic force opposite to that of the first magnetic element. Thus, the cutter head assembly 2 can be connected to the output portion 11 by magnetic attraction through the cooperation of the first and second magnetic elements, or the cutter head assembly 2 and the cutter guard assembly 3 can be connected together to the output portion 11.

[0088] As another example, the first mounting portion 11a, the second mounting portion 24, and the third mounting portion 34 may include pin holes for connection via pins. Thus, the cutter head assembly 2 can be connected to the output portion 11 via the engagement of the pins and pin holes, or the cutter head assembly 2 and the cutter guard assembly 3 can be connected together to the output portion 11.

[0089] This application does not specifically limit the structure of the first mounting part 11a, the second mounting part 24 and the third mounting part 34. Any mounting part that can connect the cutter head assembly 2 and the cutter guard assembly 3 with the output part 11 is within the protection scope of this application.

[0090] The blade assembly 2 and the blade guard assembly 3 can be connected to the output unit 11 via the same first mounting part 11a and second mounting part 24. Therefore, the structure of the output unit 11 and the blade assembly 2 is not affected regardless of whether the mowing assembly 100 is equipped with the blade guard assembly 3, thus improving the flexibility of the mowing assembly 100 in terms of configuration.

[0091] The number of first mounting parts 11a and second mounting parts 24 can be multiple, and the number of multiple second mounting parts 24 corresponds to the number of multiple first mounting parts 11a. This application embodiment does not specifically limit the number of first mounting parts 11a and second mounting parts 24; the number can be specifically set according to the actual dimensions of the cutter head assembly 2 and the cutter guard assembly 3.

[0092] Of course, those skilled in the art will understand that in some other embodiments, when the mowing assembly 100 is equipped with the blade guard assembly 3, the blade guard assembly 3 may not share the same first mounting portion 11a and second mounting portion 24 as the blade assembly 2. That is, the blade assembly 2 may be connected to the output unit 11 via a set of first mounting portions 11a and second mounting portions 24. The blade guard assembly 3 may be connected to the output unit 11 via a fourth mounting portion and a third mounting portion 34. This is achieved by providing a clearance portion on the blade guard assembly 3 to avoid the second mounting portion 24 of the blade assembly 2. Therefore, whether or not the mowing assembly 100 is equipped with the blade guard assembly 3 will not affect the structure of the output unit 11 or the blade assembly 2. For example, the first mounting portion 11a and the fourth mounting portion may be staggered. The structure and dimensions of the first mounting portion 11a and the fourth mounting portion may be the same or different.

[0093] In the embodiments of this application, such as Figures 1 to 3 As shown, the output section 11 includes an output shaft 111 and a third connector 112. The third connector 112 is sleeved on the output shaft 111. The first mounting section 11a is disposed on the third connector 112.

[0094] Therefore, in this embodiment, neither the blade assembly 2 nor the blade guard assembly 3 is directly connected to the output shaft 111 of the drive assembly 1. Instead, they are indirectly connected to the output shaft 111 via a third connector 112. This eliminates the need to extend the length of the output shaft 111 for the installation of the blade assembly 2 and the blade guard assembly 3. The shorter output shaft results in less vibration during the operation of the mowing assembly 100, thus maintaining stable operation of the blade assembly 2 and the blade guard assembly 3. Furthermore, the shorter output shaft 111 experiences less torsional stress when transmitting power, making it less prone to torsional deformation. This allows for more accurate power transmission to the blade assembly 2 and the blade guard assembly 3, ensuring the working efficiency of the mowing assembly 100 and making its mowing operation smoother and more reliable.

[0095] In addition, the shorter output shaft 111 allows for a more compact overall structure of the mowing assembly 100. This compact structure helps reduce the size and weight of the mowing assembly 100, and also reduces vibration or swaying caused by a loose structure, thereby improving the cutting accuracy and reliability of the mowing assembly 100.

[0096] For example, the third connector 112 includes a connecting flange. The connecting flange allows for a larger contact area at the connection point, thereby enabling it to withstand larger loads. The blade assembly 2 and the blade guard assembly 3 are connected to the output shaft 111 via the connecting flange. During mowing, when the blade assembly 2 and the blade guard assembly 3 are subjected to collisions or impacts from obstacles, they transmit forces to the connecting flange. The connecting flange can evenly distribute these forces, thereby reducing the possibility of localized stress concentration and improving the strength and reliability of the mowing assembly 100.

[0097] In some embodiments of this application, such as Figure 2 As shown, the blade guard assembly 3 includes a blade guard 31 and a connecting assembly 32. The connecting assembly 32 is detachably connected to the output unit 11. The blade guard 31 is located on the side of the connecting assembly 32 facing away from the drive assembly 1 and is connected to the connecting assembly 32.

[0098] The connecting component 32 acts as a buffer and transition between the blade guard 31 and the output section 11. The connecting component 32 can distribute the stress at the connection between the blade guard 31 and the output section 11, thereby reducing the risk of fatigue damage caused by long-term vibration and impact, and improving the service life of the mowing assembly 100.

[0099] Furthermore, the cutter guard 31 is connected to the output unit 11 via the connecting assembly 32. When installing, removing, or adjusting the cutter guard 31, the operator will not directly contact the output unit 11, thereby reducing the risk of accidental injury.

[0100] Furthermore, the blade guard 31 is connected to the output section 11 via the connecting assembly 32, eliminating the need to increase the length of the output shaft 111 of the output section 11 for connecting the blade guard 31. This reduces the risk of damage to the output shaft 111 when the mowing assembly 100 encounters heavy loads or obstacles, thus helping to maintain the mowing stability and reliability of the mowing assembly 100.

[0101] In some embodiments of this application, the connecting assembly 32 includes a first connector 321 and a second connector 322. The first connector 321 is detachably connected to the output section 11. The second connector 322 is rotatably connected to the first connector 321, and the blade guard disc 31 is connected to the second connector 322.

[0102] For example, the blade guard 31 can be connected to the second connector 322 via the locking bolt 7.

[0103] Therefore, the blade guard 31 can rotate relative to the output unit 11 through the rotatable connection between the second connector 322 and the first connector 321. In this way, when the lawnmower is operating in a scenario with few obstacles, the blade guard 31 hardly rotates or rotates at a slow speed when the blade assembly 2 is rotating at high speed, thereby reducing the output power of the drive assembly 1 and saving energy. When the mowing assembly 100 encounters abnormal impacts or significant resistance, the blade guard 31 can contact the obstacle and rotate, thus buffering the impact force and reducing the risk of damage or breakage of the output unit 11 due to excessive force, improving the reliability of the lawnmower.

[0104] Specifically, such as Figure 5 and Figure 6 As shown, the connecting assembly 32 also includes a bearing 323. The second connecting member 322 is rotatably connected to the first connecting member 321 via the bearing 323.

[0105] For example, the second connector 322 has a bearing mounting hole. The first connector 321 has a protrusion. The protrusion extends at least partially into the bearing mounting hole. The bearing 323 is fitted onto the protrusion and received within the bearing mounting hole.

[0106] As another example, the first connector 321 has a bearing mounting hole. The second connector 322 has a protrusion. The protrusion extends at least partially into the bearing mounting hole. The bearing 323 is fitted onto the protrusion and received within the bearing mounting hole.

[0107] The first connector 321 and the second connector 322 are rotatably connected by a bearing 323, resulting in low frictional resistance. This makes the rotation of the blade guard 31 smoother and more stable, which helps to further save energy consumption of the mowing assembly 100.

[0108] In some embodiments of this application, the number of bearings 323 can be multiple (two or more). Multiple bearings 323 are arranged at intervals along the axial direction of the output section 11. This results in less rotational frictional resistance of the blade guard disc 31 relative to the blade disc assembly 2, leading to smoother and more reliable rotation, making it more suitable for mowing operations of the mowing assembly 100 under heavy load and impact conditions (e.g., with many obstacles or tough weeds).

[0109] When there are multiple bearings 323, shims 324 can be placed between adjacent bearings 323. Shims 324 can provide buffering and isolation, reducing rigid collisions and vibration transmission between bearings 323. If the blade guard disc 31 is subjected to uneven grass resistance or other external forces during rotation, the shims 324 can absorb and disperse these impact forces to a certain extent. This makes the rotation of the bearings 323 smoother, improves their rotational performance, and consequently makes the rotation of the blade guard disc 31 more stable and reliable.

[0110] For example, bearing 323 may include a rolling bearing. Rolling bearings have a low coefficient of friction, which effectively improves the rotational performance of the cutter guard 31. Furthermore, rolling bearings have high load-bearing capacity, high transmission efficiency, and a more compact structure.

[0111] As another example, bearing 323 may include a sliding bearing. Sliding bearings have a simple structure and low cost. Moreover, sliding bearings have a large load-bearing capacity and good impact resistance.

[0112] In some embodiments, for low-load operating conditions (e.g., fewer obstacles, softer grass, etc.), such as Figure 2 As shown, a bearing 323 may not be provided between the first connecting member 321 and the second connecting member 322. The first connecting member 321 and the second connecting member 322 can be directly connected by the third bolt 4. For example, the third bolt 4 may not completely tighten the connection between the first connecting member 321 and the second connecting member 322, thereby allowing the second connecting member 322 to rotate relative to the first connecting member 321 to a certain extent.

[0113] Of course, those skilled in the art will understand that in some embodiments, especially under lower load conditions, the tool guard 31 may not be connected to the output unit 11 via the connecting assembly 32. That is, the tool guard 31 may not rotate relative to the tool guard assembly 2. Figure 4 As shown, the cutter guard 31 can also be detachably connected to the cutter head body 21 along with the cutter head 22 via the first bolt 23 connecting the blade 22 and the cutter head body 21. The cutter head body 21 is then connected to the output section 11. This helps to save on the number of parts and reduces the assembly difficulty of the cutter guard 31.

[0114] In some embodiments of this application, such as Figure 5 and Figure 6 As shown, the first connector 321 includes a first positioning part 321a. The cutter head assembly 2 includes a second positioning part 25. When the first connector 321 is connected to the output part 11, the second positioning part 25 cooperates with the first positioning part 321a for positioning.

[0115] Therefore, the first connector 321 and the cutter head assembly 2 can reduce the possibility of displacement or shaking of the first connector 321 relative to the cutter head assembly 2 through the cooperation of the first positioning part 321a and the second positioning part 25, thereby further improving the connection reliability between the two.

[0116] Furthermore, when connecting the first connector 321 to the output unit 11, the first connector 321 can be accurately positioned through the cooperation of the first positioning part 321a and the second positioning part 25. Operators do not need to spend excessive time manually adjusting the position of the first connector 321 relative to the cutter head assembly 2, reducing the complexity of the installation process and thus improving assembly efficiency.

[0117] For example, one of the first positioning part 321a and the second positioning part 25 includes a positioning hole, and the other includes a positioning boss. The positioning hole can be a round hole or a stepped hole. Similarly, the positioning boss can be cylindrical or a stepped cylinder composed of cylindrical parts of different diameters.

[0118] As another example, the first positioning part 321a and the second positioning part 25 can be magnetic components with opposite magnetic properties.

[0119] This application does not specifically limit the type and shape of the first positioning part 321a and the second positioning part 25. Any positioning part that can cooperate to achieve the positioning function is within the protection scope of this application.

[0120] In addition, such as Figure 5 and Figure 6 As shown, in some embodiments, the cutter head assembly 2 further includes a third positioning part 26. The third connecting member 112 includes a fourth positioning part 112a. When the cutter head assembly 2 is connected to the output part 11, the third positioning part 26 and the fourth positioning part 112a cooperate for positioning.

[0121] Therefore, the connection reliability between the cutter head assembly 2 and the third connecting member 112 can be improved through the cooperation of the third positioning part 26 and the fourth positioning part 112a, thereby improving the connection reliability between the cutter head assembly 2 and the output part 11. Furthermore, the connection accuracy between the cutter head assembly 2 and the third connecting member 112 can be improved, thereby increasing assembly efficiency.

[0122] Similarly, one of the third positioning part 26 and the fourth positioning part 112a includes a positioning hole, and the other includes a positioning boss. Alternatively, the third positioning part 26 and the fourth positioning part 112a can be any other type of positioning part.

[0123] In some embodiments of this application, the blade guard 31 is an integrally formed structural component.

[0124] The one-piece molded blade guard 31 has no seams, resulting in a more robust overall structure. During lawnmower operation, the blade assembly 2 rotates at high speed. This inevitably exposes it to impacts from stones, branches, and other debris. The one-piece molded blade guard 31 better withstands these impacts, reducing the risk of deformation or damage. For example, in lawnmowers operating on uneven grass or in areas with debris, the one-piece blade guard 31 provides more effective protection for the drive assembly 1 and the blade assembly 2, thereby extending the lawnmower's service life.

[0125] Moreover, the one-piece molded blade guard 31 can better reduce the splashing of grass clippings, pebbles and other debris onto the blade guard assembly 2 or the drive assembly 1, thus providing better protection.

[0126] In addition, the blade guard 31 is a one-piece molded structural component, which can effectively reduce the number of parts and reduce assembly difficulty.

[0127] Of course, those skilled in the art should understand that in some other embodiments, the blade guard 31 may also be a separate structure that is then assembled together.

[0128] In some embodiments of this application, the blade guard 31 is disc-shaped. Of course, this application is not limited to this, and in some other embodiments, the blade guard 31 may be any other suitable shape.

[0129] In the embodiments of this application, such as Figure 6 As shown, along the axial direction of the output section 11, the size h1 of the blade guard 31 (which can also be referred to as the thickness h1 of the blade guard 31) is in the range of 0.5mm to 2mm.

[0130] For example, along the axial direction of the output section 11, the size h1 of the blade guard 31 can be 0.5mm, 1mm, 1.5mm or 2mm, etc.

[0131] The thickness h1 of the cutter guard 31 is within a suitable range, which enables the cutter guard 31 to have sufficient strength and rigidity to withstand the centrifugal force generated when the cutter head assembly 2 rotates, the impact force when cutting grass, and the force when colliding with obstacles such as the ground. Therefore, setting the thickness h1 of the cutter guard 31 within a suitable range helps to extend the service life of the cutter guard 31 and reduce the replacement frequency.

[0132] In addition, when the thickness h1 of the blade guard 31 is appropriate, the vibration of the blade assembly 2 during the cutting process can be reduced, thereby reducing the noise and vibration level of the lawnmower and improving the operating environment.

[0133] Typically, when the cutter head assembly 2 is larger in size or rotates at higher speeds, the centrifugal force will also increase accordingly. Therefore, the strength requirements for the cutter guard 31 are higher, and the thickness of the cutter guard 31 needs to be appropriately increased to ensure its structural stability.

[0134] In some embodiments of this application, such as Figure 5 As shown, the radius r1 of the guard disc 31 is greater than or equal to the radius r2 of the cutter disc body 21, and less than the cutting radius r3 of the cutter disc assembly 2.

[0135] The radius r1 of the cutter guard 31 is greater than or equal to the radius r2 of the cutter body 21, ensuring that all edges of the cutter body 21 are effectively protected by the cutter guard 31. This reduces the risk of direct impact and damage to the cutter body 21 during operation, extends its service life, and provides a more stable and reliable mounting and connection position for the blade 22.

[0136] The cutting radius r3 of the cutter head assembly 2 refers to the farthest cutting distance that the blade 22 can reach when the cutter head assembly 2 rotates. It is usually the distance from the rotation center of the cutter head assembly 2 to the farthest end of the blade 22. The cutting radius r3 of the cutter head assembly 2 determines the maximum area that the lawnmower can cover in one cut and is one of the important indicators for measuring the cutting capability of the lawnmower.

[0137] Since the cutting radius r3 of the blade assembly 2 is determined by the extension range of the blade 22, if the radius r1 of the guard disc 31 is too large, equal to or exceeding the cutting radius r3, it will limit the effective cutting range of the blade 22. This will prevent the blade 22 from fully extending for cutting, thus reducing the cutting efficiency of the lawnmower and failing to achieve the expected cutting effect, thus failing to meet the needs of large-area, high-efficiency mowing. Therefore, the radius r1 of the guard disc 31 needs to be smaller than the cutting radius r3 of the blade assembly 2.

[0138] Furthermore, the radius r1 of the guard disc 31 is smaller than the cutting radius r3 of the cutter head assembly 2, which makes it less likely for the guard disc 31 to interfere with or collide with the blade 22 during the cutting process. This ensures that the blade 22 can rotate and cut freely and smoothly, reducing the risk of additional resistance, vibration, or damage caused by the interaction between the guard disc 31 and the blade 22, thus affecting the normal operation and service life of the cutter head assembly 2.

[0139] In some embodiments of this application, such as Figure 7As shown, the cutter head assembly 2 has a first operating hole 27. The cutter guard assembly 3 has a second operating hole 33. When the cutter guard assembly 3 is installed on the output unit 11, the distances between the center of the first operating hole 27, the center of the second operating hole 33, and the axis of the output unit 11 are the same.

[0140] Because there may be relative rotation between the blade guard assembly 3 and the blade disc assembly 2, rotation between them may hinder the user's operation when installing or removing the blade guard assembly 3 or the blade 22 from the blade disc assembly 2. In this embodiment, the blade disc assembly 2 has a first operating hole 27, and the blade guard assembly 3 has a second operating hole 33. By inserting the fixing tool 5 through the first operating hole 27 and the second operating hole 33, the relative positions of the blade guard assembly 3 and the blade disc assembly 2 can be kept fixed, thus facilitating user assembly and disassembly operations.

[0141] Furthermore, since the center of the first operating hole 27 and the second operating hole 33 are equidistant from the axis of the output section 11, users can achieve accurate alignment during assembly and disassembly. Users do not need to spend extra time and effort adjusting the hole positions during assembly and disassembly, allowing for quick and accurate assembly and disassembly of the cutter guard assembly 3 with the cutter head assembly 2 and the output section 11, or quick and accurate replacement of the blade 22, thus improving assembly efficiency and reducing assembly difficulty.

[0142] In related technologies, multiple clamps or special locations may be required to assemble or disassemble the blade or fixing bolts. However, this application, by providing a first operating hole 27 and a second operating hole 33, eliminates the need for additional complex fixing devices, allowing the cutter head assembly 2 and the cutter guard assembly 3 to be easily fixed in relative positions, thus reducing the difficulty of assembly and disassembly.

[0143] For example, the first operating hole 27 includes a blade mounting hole. Therefore, by using the blade mounting hole as the first operating hole 27, there is no need to create additional mounting holes on the cutter head assembly 2, which helps reduce production costs.

[0144] Of course, those skilled in the art will understand that in some other embodiments, the first operating hole 27 may also be a separate operating hole provided on the cutter head assembly 2. That is, the first operating hole 27 may be an operating hole other than the blade mounting hole.

[0145] For example, the diameters of both the first operating hole 27 and the second operating hole 33 are greater than 2 mm. This makes it easier for external fixing tools 5 to pass through.

[0146] Furthermore, those skilled in the art will understand that the diameters of the first operating hole 27 and the second operating hole 33 may be the same or different. The shapes of the first operating hole 27 and the second operating hole 33 may be the same or different. This application does not specifically limit the diameters and shapes of the first operating hole 27 and the second operating hole 33, as long as the distances between the center of the first operating hole 27, the center of the second operating hole 33, and the axis of the output section 11 are the same, and both the first operating hole 27 and the second operating hole 33 can allow the fixing tool 5 to pass through.

[0147] In some embodiments of this application, such as Figure 8 As shown, the mowing assembly 100 also includes a protective member 6. The drive assembly 1 is mounted on the protective member 6. The protective member 6 is located on the side of the cutter head assembly 2 facing away from the cutter guard assembly 3 and covers the periphery of the cutter head assembly 2.

[0148] The drive assembly 1 is mounted on the protective component 6, which provides a stable support base for the drive assembly 1. This ensures that the drive assembly 1 maintains good stability and reliability during operation, reducing the possibility of loosening or damage to the drive assembly 1 due to vibration or impact.

[0149] Furthermore, the drive assembly 1 is mounted on the protective component 6, and the position and structure of the protective component 6 can, to some extent, prevent foreign objects such as weeds and stones from entering the drive assembly 1. During the mowing process, the cutter head assembly 2 rotates at high speed to cut weeds, generating a large amount of grass clippings and dust. If these grass clippings and dust enter the drive assembly 1, such as inside the motor, they will increase the friction between the motor rotor and stator, reduce the motor's efficiency, and may cause malfunctions such as short circuits. Therefore, the protective component 6 can act as a certain isolation barrier for the drive assembly 1.

[0150] Furthermore, the protective element 6, located around the cutter head assembly 2, reduces the likelihood of operators accidentally coming into contact with it. During certain operations, such as adjusting the lawnmower height or clearing blockages, accidental contact with the high-speed rotating cutter head assembly 2 could result in severe cuts. The presence of the protective element 6 significantly reduces this safety risk.

[0151] Furthermore, during the lawnmower's cutting of weeds, the weeds may fly outwards at a certain speed. Protective component 6 can prevent weeds from flying towards the operator or other surrounding locations, reducing the likelihood of weeds hitting people or surrounding objects and improving the reliability of the lawnmower during operation.

[0152] In some embodiments of this application, such as Figure 8As shown, the cutter head assembly 2 has a third operating hole 28. The cutter guard assembly 3 has a second operating hole 33. The protective member 6 has a fourth operating hole 61. The center of the third operating hole 28, the center of the second operating hole 33, and the center of the fourth operating hole 61 are all equidistant from the axis of the output section 11.

[0153] Since both the cutter head assembly 2 and the cutter guard assembly 3 can rotate relative to the protective member 6, it is not convenient for the user to disassemble or assemble the cutter guard assembly 3, or to replace the blade 22 of the cutter head assembly 2. However, in this embodiment, the cutter head assembly 2 has a third operating hole 28. The cutter guard assembly 3 has a second operating hole 33. And the protective member 6 has a fourth operating hole 61. By inserting the fixing tool 5 through the second operating hole 33, the third operating hole 28, and the fourth operating hole 61, the relative positions of the cutter guard assembly 3, the cutter head assembly 2, and the protective member 6 can be kept fixed, thus making it easier for the user to perform disassembly and assembly operations.

[0154] Furthermore, the center of the third operating hole 28, the center of the second operating hole 33, and the center of the fourth operating hole 61 are all equidistant from the axis of the output section 11. This allows the user to achieve accurate alignment during assembly and disassembly. During assembly and disassembly, the user does not need to spend extra time and effort adjusting the hole positions, and can quickly and accurately assemble and disassemble the cutter guard assembly 3 with the cutter head assembly 2 and the output section 11, or assemble and disassemble the cutter head assembly 2 with the output section 11, or quickly and accurately replace the blade 22, thereby improving assembly efficiency and reducing assembly difficulty.

[0155] For example, the diameters of the second operating hole 33, the third operating hole 28, and the fourth operating hole 61 are all greater than 2 mm. This makes it easier for external fixing tools 5 to pass through.

[0156] Furthermore, those skilled in the art should understand that the diameters of the second operating hole 33, the third operating hole 28, and the fourth operating hole 61 can be the same or different. The shapes of the second operating hole 33, the third operating hole 28, and the fourth operating hole 61 can also be the same or different. This application does not specifically limit the diameters and shapes of the second operating hole 33, the third operating hole 28, and the fourth operating hole 61, as long as the distance between the center of the second operating hole 33, the center of the third operating hole 28, and the center of the fourth operating hole 61 and the axis of the output section 11 is the same, and the second operating hole 33, the third operating hole 28, and the fourth operating hole 61 can all allow the fixing tool 5 to pass through.

[0157] In some embodiments of this application, the projections of the second operation hole 33, the third operation hole 28, and the fourth operation hole 61 are outside the projection range of the drive assembly 1 in the same projection plane perpendicular to the axis of the output section 11.

[0158] Therefore, the second operating hole 33, the third operating hole 28, and the fourth operating hole 61 are positioned away from the drive assembly 1. This allows the operator to directly observe the positions of the second operating hole 33, the third operating hole 28, and the fourth operating hole 61 without needing to make corresponding marks on the protective component 6, making it easier for the operator to use the fixing tool 5 for fixing operations, and thus facilitating subsequent disassembly and assembly operations.

[0159] In some embodiments of this application, such as Figure 9 As shown, along the axial direction of the output section 11, the minimum distance h2 between the cutter head assembly 2 and the protective member 6 is in the range of 10mm to 50mm.

[0160] For example, along the axial direction of the output section 11, the minimum distance h2 between the cutter head assembly 2 and the protective member 6 can be 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm or 50mm, etc.

[0161] The minimum clearance h2 between the cutter head assembly 2 and the protective component 6 is within a suitable range, which can reduce the possibility of accidental contact between the protective component 6 and the cutter head assembly 2 during normal operation, thereby reducing frictional damage caused by an excessively small clearance between the protective component 6 and the cutter head assembly 2. Furthermore, it can ensure that the protective component 6 effectively performs its protective function, reducing the risk of protective failure due to an excessively large clearance.

[0162] Furthermore, a minimum distance h2 between the cutter head assembly 2 and the protective component 6 is within a suitable range, allowing for a good ventilation channel between them, which is beneficial for heat dissipation of the cutter head assembly 2. The cutter head assembly 2 may generate heat during high-speed rotation. A suitable distance between the cutter head assembly 2 and the protective component 6 reduces heat accumulation, thereby mitigating the risk of material aging and blade performance degradation due to excessive temperature, and extending the service life of the cutter head assembly 2.

[0163] Furthermore, when the minimum distance h2 between the cutter head assembly 2 and the protective component 6 is within a suitable range, it can effectively reduce vibration transmission between the protective component 6 and the cutter head assembly 2, thereby improving the stability of the protective component 6 itself. This reduces the risk of the protective component 6 loosening or being damaged due to vibration, ensuring the long-term reliable protective function of the protective component 6.

[0164] Generally, the larger the diameter of the cutter head assembly 2, the larger the minimum distance h2 between the cutter head assembly 2 and the protective component 6 should be.

[0165] In some embodiments of this application, such as Figure 9As shown, along the axial direction of the output section 11, the minimum gap distance h3 between the guard disc assembly 3 and the cutter disc assembly 2 is in the range of 5mm to 20mm.

[0166] For example, along the axial direction of the output section 11, the minimum interval h3 between the guard disc assembly 3 and the cutter disc assembly 2 can be 5mm, 10mm, 15mm or 20mm, etc.

[0167] If the distance between the blade guard assembly 3 and the blade assembly 2 is too small, the blades 22 of the blade assembly 2 may be excessively restricted by the blade guard assembly 3, thus failing to fully swing and cut weeds, resulting in incomplete cutting or uneven cut lengths. When the minimum distance h3 between the blade guard assembly 3 and the blade assembly 2 is within a suitable range, the blades 22 can cut weeds smoothly, thereby improving the neatness and quality of the cut.

[0168] In addition, a suitable spacing distance can reduce the risk of wear and deformation caused by accidental collisions between the blade assembly 2 and the blade guard assembly 3, thereby reducing the probability of mechanical failure and increasing the service life of the mowing assembly 100.

[0169] Generally, the larger the diameter of the cutter guard 31 of the cutter guard assembly 3, the larger the minimum distance h3 between the cutter guard assembly 2 and the cutter guard assembly 3 should be.

[0170] As a specific example, the mowing assembly of a lawnmower includes a cutting motor (drive assembly 1), a motor output shaft (output shaft 111), a flange (third connector 112), a blade guard adapter (first connector 321), a blade guard locking block (second connector 322), a blade guard bearing (bearing 323), a gasket 324, a cutting assembly locking screw (second mounting part 24), a blade guard locking screw (locking screw 7), and a blade guard 31.

[0171] Mounting holes (first mounting part 11a) are formed on the flange. When configuring the cutter guard assembly 3, the cutting cutter head assembly (cutter head assembly 2) and the cutter guard adapter are fixed to the mounting holes of the flange on the motor output shaft by 2 to 4 cutting assembly locking screws. The cutter guard assembly is fixed to the cutter guard adapter by the cutter guard assembly locking screws.

[0172] The cutter guard assembly includes a cutter guard locking block, cutter guard bearings, a cutter guard, and cutter guard locking screws. Depending on the load, one or more cutter guard bearings can be installed. When multiple cutter guard bearings are installed, shims can be placed between the bearings to improve their rotational performance.

[0173] The cutter guard bearings include rolling bearings. For low-load conditions, the cutter guard assembly may not have rolling bearings, but can instead use sliding bearings or have the cutter guard locking block directly engage with the cutter guard adapter.

[0174] Furthermore, for low-load conditions, the cutting disc assembly and the guard disc assembly can be set to be non-rotatable relative to each other, and the guard disc and the blade can be directly locked onto the cutting disc (disc body 21) with the blade screw (first bolt 23).

[0175] The blade guard is fixed to the blade guard locking block by 2 to 4 blade guard locking screws. The blade guard has two or more evenly distributed holes (second operating holes 33), which are aligned with the blade locking screws (first bolts 23) on the cutting blade disc (blade disc body 21) to facilitate blade replacement 22.

[0176] Furthermore, the cutting disc can also have holes corresponding to the holes on the blade guard (third operating hole 28), and the protective cover (protective component 6) can have holes corresponding to the holes on the blade guard (fourth operating hole 61). When the user is removing or installing the blade or the blade guard locking screws, they can insert a tool (fixing tool 5) through these holes to secure the cutting disc and the blade guard, making operation convenient. The diameter of these holes is greater than 2mm, and their positions are far from the rotation center of the cutting motor. This allows the operator to easily observe these holes without marking them, thus eliminating the need for special markings on the protective cover.

[0177] The cutting disc has multiple bosses (second positioning part 25, third positioning part 26) that mate with the grooves (first positioning part 321a, fourth positioning part 112a) of the motor output shaft flange and the cutter guard adapter, respectively. Alternatively, the cutting disc has recesses or holes (second positioning part 25, third positioning part 26) that mate with the protrusions (first positioning part 321a, fourth positioning part 112a) of the motor output shaft flange and the cutter guard adapter, respectively.

[0178] When the cutting disc is not equipped with a blade guard, the cutting assembly locking screws directly lock the disc assembly onto the motor output flange.

[0179] The radius r1 of the cutter guard disc is greater than or equal to the radius r2 of the cutter disc, and less than the cutting radius r3 of the cutting disc assembly. The thickness h1 of the cutter guard disc is between 0.5 and 2 mm. The thickness h1 increases with the diameter of the cutter guard disc. The distance h3 between the cutter guard disc and the cutting disc is between 5 and 20 mm. The distance h3 increases with the diameter of the cutter guard disc. The distance h2 between the cutting disc and the guard disc is between 10 and 50 mm. The distance h2 increases with the diameter of the cutting disc.

[0180] A cutting disc typically has 2 to 6 cutting blades (blade 22). The larger the diameter of the cutting disc, the more cutting blades are required.

[0181] The above embodiments are merely illustrative of the technical solutions of this application and are not intended to limit it. 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. These 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, and all should be covered within the scope of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way.

Claims

1. A grass cutting assembly comprising: Applied to lawnmowers, the mowing assembly includes: The driving components include the output section; The cutter head assembly is connected to the output section; and The cutter guard assembly is located on the side of the cutter guard assembly facing away from the drive assembly. The cutter guard assembly is provided with a third mounting part, and the cutter guard assembly is detachably connected to the output part through the third mounting part.

2. The lawnmower assembly according to claim 1, characterized in that, The output section is provided with a first mounting section; The cutter head assembly is connected to the first mounting part; The blade guard assembly is detachably connected to the first mounting part via the third mounting part.

3. The lawnmower assembly according to claim 2, characterized in that, The cutter head assembly includes a second mounting portion, which is connected to the first mounting portion. The cutter guard assembly is detachably connected to the first mounting portion via the third mounting portion and the second mounting portion.

4. The lawnmower assembly according to claim 2, characterized in that, The output section includes an output shaft and a third connector, the third connector being sleeved on the output shaft, and the first mounting section being disposed on the third connector.

5. The lawnmower assembly according to claim 4, characterized in that, The third connector includes a connecting flange.

6. The lawnmower assembly according to claim 1, characterized in that, The blade guard assembly includes a blade guard and a connecting assembly. The connecting assembly is detachably connected to the output section. The blade guard is located on the side of the connecting assembly facing away from the drive assembly and is connected to the connecting assembly.

7. The lawnmower assembly according to claim 6, characterized in that, The connection assembly includes a first connector and a second connector. The first connector is detachably connected to the output section, the second connector is rotatably connected to the first connector, and the blade guard is connected to the second connector.

8. The lawnmower assembly according to claim 7, characterized in that, The first connector includes a first positioning part, and the cutter head assembly includes a second positioning part. When the first connector is connected to the output part, the second positioning part cooperates with the first positioning part for positioning.

9. The lawnmower assembly according to claim 8, characterized in that, One of the first positioning part and the second positioning part includes a positioning hole, and the other includes a positioning boss.

10. The lawnmower assembly according to claim 7, characterized in that, The connecting assembly further includes a bearing, and the second connecting member is rotatably connected to the first connecting member via the bearing.

11. The lawnmower assembly according to claim 10, characterized in that, The bearings are multiple and are arranged at intervals along the axial direction of the output section, with shims provided between adjacent bearings.

12. The lawnmower assembly according to any one of claims 6 to 11, characterized in that, The blade guard is a one-piece molded structural component.

13. The lawnmower assembly according to any one of claims 6 to 11, characterized in that, The blade guard is disc-shaped, and its size is in the range of 0.5mm to 2mm along the axial direction of the output section.

14. The lawnmower assembly according to any one of claims 6 to 11, characterized in that, The cutter head assembly includes a cutter head body and a blade. The cutter head body is disc-shaped, and the blade is rotatably connected to the outer periphery of the cutter head body. The blade can extend beyond the cutter head body. The radius of the cutter guard disc is greater than or equal to the radius of the cutter disc body, but less than the cutting radius of the cutter disc assembly.

15. The lawnmower assembly according to claim 1, characterized in that, The cutter head assembly has a first operating hole, and the cutter guard assembly has a second operating hole. When the cutter guard assembly is installed on the output section, the distance between the center of the first operating hole, the center of the second operating hole and the axis of the output section is the same. The first operating hole includes a blade mounting hole.

16. The lawnmower assembly according to any one of claims 1 to 11, characterized in that, The mowing assembly also includes a protective component, on which the drive assembly is mounted. The protective component is located on the side of the cutter head assembly facing away from the blade guard assembly and covers the periphery of the cutter head assembly.

17. The lawnmower assembly according to claim 16, characterized in that, The cutter head assembly has a third operating hole, the cutter guard assembly has a second operating hole, and the protective component has a fourth operating hole. The center of the third operating hole, the center of the second operating hole, and the center of the fourth operating hole are all equidistant from the axis of the output section.

18. The lawnmower assembly according to claim 17, characterized in that, In the same projection plane perpendicular to the axis of the output section, the projections of the second operating hole, the third operating hole, and the fourth operating hole are outside the projection range of the drive assembly.

19. The lawnmower assembly according to claim 16, characterized in that, Along the axial direction of the output section, the minimum distance between the cutter head assembly and the protective member is in the range of 10mm to 50mm.

20. The lawnmower assembly according to any one of claims 1 to 11, characterized in that, Along the axial direction of the output section, the minimum distance between the guard disc assembly and the cutter disc assembly is in the range of 5mm to 20mm.

21. A lawnmower, characterized in that, The lawnmower includes: Main body; and The mowing assembly according to any one of claims 1 to 20 is disposed on the body.

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