Mowing assembly and mower

Abstract

The invention discloses a mowing assembly and a mower. The mowing assembly is applied to the mower. The mowing assembly comprises a driving assembly, a cutter head assembly and a cutter protection assembly. The driving assembly comprises an output part. And the cutterhead assembly is connected with the output part. The cutter protecting disc assembly is located on the side, back on to the driving assembly, of the cutter disc assembly and detachably connected with the output part. The mowing assembly is provided with the cutterhead protecting assembly, so that the cutterhead protecting assembly can be protected to a certain extent, the possibility that the cutterhead assembly is damaged due to the fact that obstacles directly impact the cutterhead assembly is reduced, and the service life of the cutterhead assembly is prolonged. In addition, the cutter protecting disc assembly is detachably connected with the cutter disc assembly, and replacement and maintenance of all the assemblies in the mowing assembly are more convenient. Moreover, the user can select to assemble or not assemble the cutter protecting disc assembly according to actual requirements or select to assemble different cutter protecting disc assemblies according to actual requirements while the structure of the mowing assembly and mowing operation are not influenced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of grass cutting equipment, and in particular to a grass cutting assembly and a grass cutting machine. BACKGROUND

[0002] With the continuous development of science and technology, grass cutting machines are increasingly widely used in life and industry. Grass cutting machines can be applied to family gardens, park green spaces, golf courses and other places where there is a need to maintain grass plants, for trimming and arranging grass plants.

[0003] When users use grass cutting machines, they may have different needs for the accessories (such as the guard plate assembly) of the grass cutting assembly according to different application scenarios and work requirements. Therefore, how to select the accessories of the grass cutting assembly without affecting the structure and normal work of the grass cutting assembly is one of the research topics in the industry. SUMMARY

[0004] To solve the above technical problems, the present application provides a grass cutting assembly and a grass cutting machine which can select accessories according to user needs.

[0005] The present application is implemented by the following technical solutions.

[0006] The first aspect of the present application provides a grass cutting assembly applied to a grass cutting machine, comprising: a driving assembly comprising an output portion; a cutter plate assembly connected to the output portion; and a guard plate assembly located on the side of the cutter plate assembly away from the driving assembly, the guard plate assembly being detachably connected to the output portion.

[0007] In some embodiments, a first mounting portion is provided on the output portion; the cutter plate assembly is connected to the first mounting portion; and the guard plate assembly is detachably connected to the first mounting portion.

[0008] In some embodiments, the cutter plate assembly comprises a second mounting portion, the second mounting portion being connected to the first mounting portion, and the guard plate assembly being detachably connected to the first mounting portion via the second mounting portion.

[0009] In some embodiments, the output portion comprises an output shaft and a third connecting piece, the third connecting piece being sleeved on the output shaft, and the first mounting portion being provided on the third connecting piece.

[0010] In some embodiments, the third connecting piece comprises a connecting flange.

[0011] In some embodiments, the guard plate assembly comprises a guard plate and a connecting assembly, the connecting assembly being detachably connected to the output portion, the guard plate being located on the side of the connecting assembly away from the driving assembly and being connected to the connecting assembly.

[0012] In some embodiments, the connecting assembly comprises a first connecting piece and a second connecting piece, the first connecting piece is detachably connected with the output part, the second connecting piece is rotationally connected with the first connecting piece, and the guard cutter head is connected with the second connecting piece.

[0013] In some embodiments, the first connecting piece comprises a first positioning part, the cutter head assembly comprises a second positioning part, and the second positioning part is positioned in cooperation with the first positioning part when the first connecting piece is connected with the output part.

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

[0015] In some embodiments, the connecting assembly further comprises a bearing, and the second connecting piece is rotationally connected with the first connecting piece through the bearing.

[0016] In some embodiments, the number of bearings is multiple, the multiple bearings are arranged in intervals along the axial direction of the output part, and a gasket is arranged between adjacent bearings.

[0017] In some embodiments, the guard cutter head is an integrally formed structural member.

[0018] In some embodiments, the guard cutter head is in the shape of a disc, and the size of the guard cutter head is in the range of 0.5mm to 2mm along the axial direction of the output part.

[0019] In some embodiments, the cutter head assembly comprises a cutter head body and a blade, the cutter head body is in the shape of a disc, the blade is rotationally connected to the outer peripheral side of the cutter head body, and the blade can extend beyond the cutter head body; the radius of the guard cutter head 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, a first operation hole is formed in the cutter head assembly, a second operation hole is formed in the guard cutter head assembly, the distance between the center of the first operation hole, the center of the second operation hole and the axis of the output part is the same when the guard cutter head assembly is installed on the output part, and the first operation hole comprises a blade mounting hole.

[0021] In some embodiments, the grass cutting assembly further comprises a protective member, the driving assembly is mounted on the protective member, the protective member is located on the side of the cutter head assembly away from the guard cutter head assembly, and covers the periphery of the cutter head assembly.

[0022] In some embodiments, a third operation hole is formed on the cutterhead assembly, a second operation hole is formed on the guard cutterhead assembly, and a fourth operation hole is formed on the guard; the distance between the center of the third operation hole, the center of the second operation hole, and the center of the fourth operation hole and the axis of the output part is the same.

[0023] In some embodiments, the projections of the second operation hole, the third operation hole, and the fourth operation hole are outside the projection range of the driving assembly in the same projection plane perpendicular to the axis of the output part.

[0024] In some embodiments, the minimum distance between the cutterhead assembly and the guard along the axis of the output part is in the range of 10mm to 50mm.

[0025] In some embodiments, the minimum distance between the guard cutterhead assembly and the cutterhead assembly along the axis of the output part is in the range of 5mm to 20mm.

[0026] The second aspect of the present application provides a mower, which comprises a main body and a mower assembly according to the first aspect of the present application.

[0027] Inventive Effects

[0028] The mower assembly of the embodiments of the present application directly connects the guard cutterhead assembly with the output part of the driving assembly, instead of connecting the guard cutterhead assembly with the cutterhead assembly. Therefore, whether the guard cutterhead assembly is installed or not does not affect the installation and normal operation of the cutterhead assembly. Therefore, the mower assembly of the embodiments of the present application can be assembled or not assembled according to the actual needs of the user, or different guard cutterhead assemblies can be assembled according to the actual needs. Moreover, regardless of the selected assembly mode, the structure of the mower assembly and the mowing operation will not be affected. BRIEF DESCRIPTION OF DRAWINGS

[0029] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments, and are not meant to limit the present application. Moreover, the same reference numerals in all the drawings represent the same elements. In the drawings:

[0030] Figure 1 A perspective exploded structural schematic view of the mower assembly provided for some embodiments of the present application;

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

[0032] Figure 3 Schematic cross-sectional view of a mower assembly provided for some embodiments of the present application without the guard deck assembly assembled Figure 2 ;

[0033] Figure 4 Schematic cross-sectional view of a mower assembly provided for some embodiments of the present application with the guard deck assembly directly connected to the deck assembly

[0034] Figure 5 Schematic cross-sectional view of a mower assembly provided for some embodiments of the present application with the link assembly provided with one bearing

[0035] Figure 6 Schematic cross-sectional view of a mower assembly provided for some embodiments of the present application with the link assembly provided with two bearings

[0036] Figure 7 Schematic bottom view of a deck assembly provided for some embodiments of the present application

[0037] Figure 8 Schematic perspective view of a deck assembly, a guard deck assembly, a guard provided for some embodiments of the present application

[0038] Figure 9 Schematic cross-sectional view of a mower assembly provided for some embodiments of the present application showing the guard

[0039] BRIEF DESCRIPTION OF DRAWINGS

[0040] 1. driving assembly; 11. output part; 11a. first mounting part; 111. output shaft; 112. third connecting piece; 112a. fourth positioning part; 2. deck assembly; 21. deck main body; 22. blade; 23. first bolt; 24. second mounting part; 25. second positioning part; 26. third positioning part; 27. first operation hole; 28. third operation hole; 3. guard deck assembly; 31. guard deck; 32. connecting assembly; 321. first connecting piece; 321a. first positioning part; 322. second connecting piece; 323. bearing; 324. gasket; 33. second operation hole; 34. third mounting part; 4. third bolt; 5. fixing tool; 6. guard; 61. fourth operation hole; 7. locking bolt; h1. thickness of the guard deck; h2. minimum spacing distance between the deck assembly and the guard; h3. minimum spacing distance between the guard deck assembly and the deck assembly; r1. radius of the guard deck; r2. radius of the deck main body; r3. cutting radius of the deck assembly; 100. mower assembly. DETAILED DESCRIPTION

[0041] The embodiments of the present application will be described in detail below with reference to the drawings. The following examples are only used to more clearly illustrate the technical scheme of the present application, and therefore only serve as examples, but cannot be used to limit the protection scope of the present 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 belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application; the use of the terms "include," "have" and "comprise" and variations thereof herein are meant to encompass the items listed thereafter, but do not exclude additional items.

[0043] In the description of the embodiments of the present application, the technical terms "first", "second", "third" and the like are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the technical features indicated. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0044] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to each other. It is 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 of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are "or" relationship.

[0046] In the description of the embodiments of the present application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and is not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed, operated or used in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0047] In the description of the embodiments of the present application, unless specifically defined and limited otherwise, the technical terms "mount", "connect", "connect", "fix", and other terms should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0048] In the description of the embodiments of the present application, unless specifically defined and limited otherwise, the technical term "contact" should be understood in a broad sense, which can be direct contact or contact through an intermediate medium layer, which can be contact between two objects in contact without interaction force, or contact between two objects in contact with interaction force.

[0049] Next, referring to Figures 1 to 9 Some embodiments of the present application are described in detail.

[0050] The present application provides a grass cutting assembly 100. The grass cutting assembly 100 is applied to a grass cutter. The grass cutter can be applied to various places such as family gardens, park green spaces, golf courses, etc. which have grass plant maintenance needs, for example, for trimming and arranging grass plants. The grass cutter can cut and trim the grass of the lawn neatly, for example.

[0051] Exemplarily, the grass cutter can be a self-moving device. That is, the grass cutter can automatically complete the cutting and trimming work on the lawn without human operation.

[0052] Exemplarily, the grass cutter can also be a hand-push device. That is, the grass cutter relies on the user's physical force to cut and trim the lawn.

[0053] The embodiments of the present application do not specifically limit the type of grass cutter, and any grass cutter capable of cutting and trimming grass plants is within the protection scope of the present application.

[0054] In some embodiments, the grass cutter includes a main body and a grass cutting assembly 100. The grass cutting assembly 100 is arranged on the main body. The main body is the main support and load-bearing component of the grass cutter. The grass cutting assembly 100, the energy assembly, the walking assembly, etc. of the grass cutter are arranged on the main body.

[0055] The energy assembly is used to provide electric energy for the grass cutter. Exemplarily, the energy assembly can be a battery, a photovoltaic panel, etc. that provides electric energy. The energy assembly can also be a device that provides energy by using fuel, such as an internal combustion engine. In some embodiments, the energy assembly includes a battery, and the battery is housed in the main body.

[0056] The walking assembly can drive the mower to walk on the working surface. Exemplarily, the walking assembly can include a walking wheel, for example.

[0057] The mower assembly 100 is an important assembly for realizing the function of cutting and trimming the herbaceous plants by the mower. As shown in Figure 1 and Figure 2 The mower assembly 100 includes a driving assembly 1, a cutterhead assembly 2 and a cutterhead guard assembly 3.

[0058] The driving assembly 1 includes an output portion 11. The cutterhead assembly 2 is connected with the output portion 11.

[0059] The driving assembly 1 is a structure for providing power for the cutterhead assembly 2, and the output portion 11 is used for outputting the power of the driving assembly 1. The cutterhead assembly 2 is an execution structure for the mower assembly 100 to perform the mowing operation. The cutterhead assembly 2 is connected with the output portion 11 of the driving assembly 1 and can rotate under the driving of the driving assembly 1. The cutterhead assembly 2 is usually provided with a blade 22. When the cutterhead assembly 2 rotates under the driving of the driving assembly 1, the blade 22 rotates together. When the rotating blade 22 contacts the herbaceous plants such as weeds, the weeds are cut off, so that the mowing operation can be realized.

[0060] Exemplarily, the driving assembly 1 can include an electric driving assembly. The output power of the electric driving assembly is relatively stable, and the structure is relatively simple. As a specific example, the driving assembly 1 can include a motor.

[0061] Exemplarily, the driving assembly 1 can include a fuel-driven assembly. The output power of the fuel-driven assembly is large, and the cutterhead assembly 2 can be driven to perform the mowing operation efficiently.

[0062] It should be understood by those skilled in the art that the type of the driving assembly 1 is not specifically limited in the embodiments of the present application.

[0063] As shown in Figure 2 The cutterhead assembly 2 includes a cutterhead main body 21 and a blade 22. The cutterhead main body 21 provides a mounting and connecting position for the blade 22. Exemplarily, the blade 22 can be connected to the cutterhead main body 21 through a first bolt 23. The output portion 11 of the driving assembly 1 is connected with the cutterhead main body 21. The cutterhead main body 21 rotates under the driving of the output portion 11 and can transmit the power to the blade 22, so that the blade 22 can rotate at a high speed, and the mowing operation can be realized. The blade 22 is used for cutting the weeds. In the embodiments of the present application, the cutterhead main body 21 is in the shape of a disc. In some other embodiments, the cutterhead main body 21 can also be in any other suitable shape. The shape and size of the cutterhead main body 21 are not specifically limited in the embodiments of the present application, and can be designed according to actual needs.

[0064] In the embodiment of the present application, the blade 22 is rotationally 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 mower and facilitating replacement of the blade 22.

[0065] In addition, when the grass cutting assembly 100 cuts long grass or grass with high toughness, the rotationally connected blade 22 can flexibly rotate with the winding trend of the grass, so that the grass can be more smoothly cut off and thrown away from the cutting area, reducing the possibility of grass jamming of the grass cutting assembly 100.

[0066] Of course, it should be understood by those skilled in the art that in some embodiments, the blade 22 can also be fixedly connected to the outer periphery of the cutter head body 21, as long as the blade 22 can cut the grass.

[0067] In the embodiment of the present application, the blade 22 can extend beyond the cutter head body 21. The blade 22 extending beyond the cutter head body 21 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. That is, the rotation track 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 rotation shaft of the blade 22 to the edge of the blade 22 is greater than the distance from the rotation shaft of the blade 22 to the edge of the cutter head body 21. Thus, when the grass cutting assembly 100 is working, the blade 22 can cover a wider cutting width. This helps the mower to cut more grass in the same time, reduces the number of back and forth movements of the mower when cutting a large area of lawn, thereby improving the working efficiency of mowing.

[0068] In addition, the reasonable extension design of the blade 22 can reduce unnecessary energy consumption of the driving assembly 1 while ensuring the mowing effect. Because there is no need to increase the power during mowing to compensate for the insufficient coverage of the blade 22, the mower can be more energy-efficient during mowing, which is conducive to reducing the use cost.

[0069] For example, the number of blades 22 can be 2, 3, 4, 5, 6 or more. The plurality of blades 22 are arranged at intervals along the circumferential direction of the cutter head body 21. The number of blades 22 is not specifically limited in the embodiment of the present application, and can be set according to the actual size of the cutter head body 21.

[0070] During the mowing operation of the mower, the cutterhead assembly 2 can be in contact with the grass, soil and other debris (e.g. small stones, branches, etc.) below, which can cause certain wear to the cutterhead assembly 2. In addition, during the high-speed rotation of the cutterhead assembly 2, the cut grass can be splashed. In some areas where the grass is thick and mixed with small stones, the small stones can also be splashed due to contact with the cutterhead assembly 2. Thus, these splashed grass, debris, etc. can cause a certain impact force to the cutterhead assembly 2 or even the drive assembly 1. Especially in the case of high-speed rotation of the cutterhead assembly 2, these debris can cause greater damage to the cutterhead assembly 2 or the drive assembly 1, thereby affecting the service life of the mowing assembly 100. Furthermore, if the cutterhead assembly 2 is subjected to excessive force during high-speed rotation, it is easy to deform. For example, it can be bent or twisted due to excessive local force, which can affect the cutting performance of the mowing assembly 100.

[0071] Therefore, the mowing assembly 100 of the embodiments of the present application further comprises a cutter guard assembly 3. The cutter guard assembly 3 is a protective accessory of the mowing assembly 100. As shown in Figure 1 and Figure 2 The cutter guard assembly 3 is located on the side of the cutterhead assembly 2 away from the drive assembly 1. Thus, the cutter guard assembly 3 can play a certain buffering role, thereby protecting the cutterhead assembly 2 from direct contact with the grass, debris, etc. below. And during the operation of the cutterhead assembly 2, the splashed grass and debris can be blocked by the cutter guard assembly 3, thereby reducing the possibility of damage to the cutterhead assembly 2 due to impact force. Moreover, the provision of the cutter guard assembly 3 can also reduce the splashing of debris to the drive assembly 1, thereby increasing the risk of load or clogging of the drive assembly 1, so that the drive assembly 1 can more stably and reliably drive the rotation of the cutterhead assembly 2. In addition, the cutter guard assembly 3 can also make the stress on the cutterhead assembly 2 more uniform, thereby maintaining the original shape of the cutterhead assembly 2 during operation, thereby maintaining good cutting performance.

[0072] Exemplarily, the cutter guard assembly 3 can rotate relative to the cutterhead assembly 2.

[0073] Exemplarily, the cutter guard assembly 3 can rotate together with the cutterhead assembly 2.

[0074] In the embodiments of the present application, the guard cutter assembly 3 is detachably connected with the output portion 11. On the one hand, the detachable connection of the guard cutter assembly 3 with the output portion 11 facilitates the replacement and maintenance of the grass cutting assembly 100. In the process of grass cutting by the grass cutting assembly 100, both the cutter assembly 2 and the guard cutter assembly 3 can be worn or damaged. Since the guard cutter assembly 3 and the cutter assembly 2 are independent of each other, when one of them needs to be replaced due to damage, the damaged assembly can be individually detached and replaced without the need for overall replacement, thereby facilitating the reduction of maintenance costs. Moreover, the detachable design also facilitates the user to clean the cutter assembly 2 or the guard cutter assembly 3. The user can separate the two, so as to more easily remove the grass clippings, soil and other debris attached thereto, keep the cutter assembly 2 or the guard cutter assembly 3 clean, and thereby facilitate the extension of the service life of the cutter assembly 2 or the guard cutter assembly 3.

[0075] On the other hand, the detachable design is more convenient for the user to adjust and adapt the grass cutting assembly 100. The detachable connection of the guard cutter assembly 3 with the output portion 11 makes the guard cutter assembly 3 an optional accessory. The user can choose to install the guard cutter assembly 3 or not according to actual needs. In the present application, the guard cutter assembly 3 is installed on the output portion 11 instead of being installed on the cutter assembly 2. Such a setting makes it only necessary to provide an interface on the output portion 11 for connecting the guard cutter assembly 3, without the need to provide a connection interface for the guard cutter assembly 3 on the cutter assembly 2. Therefore, whether the guard cutter assembly 3 is installed on the output portion 11 or not does not affect the structural design and normal operation of the cutter assembly 2. The cutter assembly 2 does not need to consider the connection interface with the guard cutter assembly 3 when designed, which can simplify the structural design of the cutter assembly 2 and the overall size of the cutter assembly 2 in the axial direction, prevent the overall size of the cutter assembly 2 in the axial direction from being too large, and cause the motor shaft of the driving assembly 1 to deform due to excessive bending moment transmitted thereto.

[0076] When the user uses the grass trimmer, the accessory requirements of the grass cutting assembly 100 can be different for different application scenarios and work requirements. For example, when the grass trimmer is used in an environment with a large amount of weeds and accompanied by stones, branches and other debris, the assembly of the guard cutter assembly 3 can more effectively protect the cutter assembly 2 and reduce the risk of damage to the cutter assembly 2 due to collision with hard objects such as stones. For another example, when the grass trimmer is used to cut shrubs, reed clusters and other relatively hard plants, the guard cutter assembly 3 can reduce the possibility of damage to the cutter assembly 2 due to a large impact force, and also improve the cutting stability and safety of the grass cutting assembly 100.

[0077] For example, the user can choose not to assemble the guard deck assembly 3 when the mower is working on some flat and open lawn without debris or when cutting relatively soft plants. In this way, the cutting efficiency of the deck assembly 2 can be fully utilized, and the mowing speed can be improved.

[0078] In this way, the detachable connection of the guard deck assembly 3 is more convenient for the user to select and assemble according to the actual mowing scene, and to choose whether to assemble the guard deck assembly 3. In addition, when the user chooses to assemble the guard deck assembly 3, different types of guard deck assemblies 3 (for example, different sizes of guard deck assemblies 3) can be selectively assembled according to the needs of different mowing scenes, thereby improving the selection versatility and flexibility of the mowing assembly 100.

[0079] In another aspect, the detachable connection of the guard deck assembly 3 is also more convenient for the transportation and storage of the mower. For example, when the mower needs to be transported or stored for a long time, the guard deck assembly 3 can be detached. This reduces the overall size of the mower, thereby saving transportation and storage space and facilitating transportation and storage.

[0080] In some embodiments of the present application, as shown in Figures 1 to 3 The first mounting portion 11a is provided on the output portion 11. The deck assembly 2 is connected to the first mounting portion 11a. The guard deck assembly 3 is detachably connected to the first mounting portion 11a. Among them, Figure 2 A schematic cross-sectional view of the mowing assembly 100 with the guard deck assembly 3 is shown. Figure 3 A schematic cross-sectional view of the mowing assembly 100 without the guard deck assembly 3 is shown.

[0081] In the embodiments of the present application, from Figure 2 and Figure 3 As can be seen, the guard deck assembly 3 and the deck assembly 2 are connected to the output portion 11 by sharing the same first mounting portion 11a. That is, whether the guard deck assembly 3 is installed or not, it will not affect or interfere with the structure of the output portion 11 and the deck assembly 2. In other words, the mowing assembly 100 does not need to additionally provide other mounting portions or change the structure of the output portion 11 in order to install the guard deck assembly 3.

[0082] In addition, whether the mowing assembly 100 is installed with the guard deck assembly 3 or not, it will not affect the mowing operation of the deck assembly 2.

[0083] Further, the deck assembly 2 further comprises a second mounting portion 24. The second mounting portion 24 is connected to the first mounting portion 11a. The guard deck assembly 3 is detachably connected to the first mounting portion 11a through the second mounting portion 24.

[0084] Exemplarily, the first mounting portion 11a can comprise a mounting hole, and the second mounting portion 24 can also comprise a mounting hole. The first mounting portion 11a and the second mounting portion 24 can be connected by a bolt. As shown in Figure 3 the bolt can pass through the second mounting portion 24 and the first mounting portion 11a to connect, so as to fix the cutter disc assembly 2 on the output portion 11. The first mounting portion 11a can be provided with a thread matched with the bolt. Of course, the first mounting portion 11a can also not be provided with a thread, and the bolt is matched with a nut. As shown in Figure 1 and Figure 2 when the mower assembly 100 is installed with the blade guard assembly 3, the blade guard assembly 3 can comprise a third mounting portion 34. The third mounting portion 34 can comprise a mounting hole. The bolt can pass through the third mounting portion 34, the second mounting portion 24 and the first mounting portion 11a to connect, and the cutter disc assembly 2 and the blade guard assembly 3 are fixed on the output portion 11. The first mounting portion 11a can be provided with a thread matched with the bolt. Of course, the first mounting portion 11a can also not be provided with a thread, and the bolt is matched with a nut. Thus, the cutter disc assembly 2 can be connected to the output portion 11, or the cutter disc assembly 2 and the blade guard assembly 3 are jointly connected to the output portion 11 through the cooperation of the bolt and the thread.

[0085] Exemplarily, the first mounting portion 11a and the third mounting portion 34 can comprise a first magnetic member. The second mounting portion 24 can comprise a second magnetic member opposite to the magnetic force of the first magnetic member. Thus, the cutter disc assembly 2 can be connected to the output portion 11, or the cutter disc assembly 2 and the blade guard assembly 3 are jointly connected to the output portion 11 in a magnetic attraction manner through the cooperation of the first magnetic member and the second magnetic member.

[0086] Exemplarily, the first mounting portion 11a and the second mounting portion 24 and the third mounting portion 34 can comprise a pin hole, and are connected through a pin. Thus, the cutter disc assembly 2 can be connected to the output portion 11, or the cutter disc assembly 2 and the blade guard assembly 3 are jointly connected to the output portion 11 through the cooperation of the pin and the pin hole.

[0087] The embodiments of the present application do not specifically limit the structure of the first mounting portion 11a, the second mounting portion 24 and the third mounting portion 34, as long as the mounting portion can realize the connection of the cutter disc assembly 2 and the blade guard assembly 3 with the output portion 11.

[0088] The cutter disc assembly 2 and the blade guard assembly 3 can be connected to the output portion 11 through the same first mounting portion 11a and the second mounting portion 24. Thus, whether the mower assembly 100 is installed with the blade guard assembly 3 or not, the structure of the output portion 11 and the cutter disc assembly 2 will not be affected, and the selection flexibility of the mower assembly 100 is improved.

[0089] The number of the first mounting portions 11a and the second mounting portions 24 can be multiple, and the number of the multiple second mounting portions 24 corresponds to the number of the multiple first mounting portions 11a. The number of the first mounting portions 11a and the second mounting portions 24 is not specifically limited in the embodiments of the present application, and can be specifically set according to the size of the cutter assembly 2 and the guard assembly 3.

[0090] Of course, it should be understood by those skilled in the art that, in some other embodiments, the mower assembly 100 can not share the same first mounting portion 11a and the second mounting portion 24 with the cutter assembly 2 when the guard assembly 3 is installed. That is, the cutter assembly 2 can be connected to the output portion 11 through a set of first mounting portions 11a and second mounting portions 24. The guard assembly 3 is connected to the output portion 11 through the fourth mounting portion and the third mounting portion 34. As long as a clearance is reserved on the guard assembly 3 to avoid the second mounting portion 24 of the cutter assembly 2, the structure of the output portion 11 and the cutter assembly 2 will not be affected whether the guard assembly 3 is installed or not. For example, the first mounting portion 11a and the fourth mounting portion are staggered. The structure and size of the first mounting portion 11a and the fourth mounting portion can be the same or different.

[0091] In the embodiments of the present application, as shown in Figures 1 to 3 The output portion 11 includes an output shaft 111 and a third connecting piece 112. The third connecting piece 112 is sleeved on the output shaft 111. The first mounting portion 11a is arranged on the third connecting piece 112.

[0092] Therefore, in the embodiments of the present application, the cutter assembly 2 and the guard assembly 3 are not directly connected to the output shaft 111 of the driving assembly 1, but are indirectly connected to the output shaft 111 through the third connecting piece 112. Thus, the length of the output shaft 111 does not need to be additionally extended for the installation of the cutter assembly 2 and the guard assembly 3. The shorter output shaft 111 has a relatively small vibration amplitude during the operation of the mower assembly 100, so that the stable operation of the cutter assembly 2 and the guard assembly 3 can be maintained. Moreover, the shorter output shaft 111 has a relatively small torsional stress when transmitting power, and is not prone to torsional deformation. Thus, the power can be more accurately transmitted to the cutter assembly 2 and the guard assembly 3, the working efficiency of the mower assembly 100 is ensured, and the mowing operation of the mower assembly 100 is more stable and reliable.

[0093] In addition, the shorter output shaft 111 can make the overall structure of the mower assembly 100 more compact. Such a compact structure is conducive to reducing the volume and weight of the mower assembly 100, and can also reduce the vibration or shaking caused by loose structure, thereby improving the cutting accuracy and reliability of the mower assembly 100.

[0094] Exemplarily, the third connecting member 112 comprises a connecting flange. The connecting flange can make the contact area of the connecting position larger, so as to be able to bear larger load. The cutter disc assembly 2 and the guard disc assembly 3 are connected to the output shaft 111 through the connecting flange. In the process of mowing, when the cutter disc assembly 2 and the guard disc assembly 3 are collided or impacted by obstacles, the force will be transmitted to the connecting flange. The connecting flange can uniformly disperse these forces, thereby reducing the possibility of local stress concentration and improving the strength and reliability of the mowing assembly 100.

[0095] In some embodiments of the present application, as shown in Figure 2 The guard disc assembly 3 comprises a guard disc 31 and a connecting assembly 32. The connecting assembly 32 is detachably connected with the output portion 11. The guard disc 31 is located on the side of the connecting assembly 32 away from the driving assembly 1 and is connected with the connecting assembly 32.

[0096] The connecting assembly 32 can play a role of buffering and transition between the guard disc 31 and the output portion 11. The connecting assembly 32 can disperse the stress at the connecting position between the guard disc 31 and the output portion 11, thereby reducing the risk of fatigue damage due to long-term vibration and impact and improving the service life of the mowing assembly 100.

[0097] Moreover, the guard disc 31 is connected with the output portion 11 through the connecting assembly 32. When the guard disc 31 is installed, disassembled or adjusted, the operator will not directly contact with the output portion 11, thereby being beneficial to reduce the risk of accidental injury.

[0098] In addition, the guard disc 31 is connected with the output portion 11 through the connecting assembly 32, without the need to additionally increase the length of the output shaft 111 of the output portion 11 for connecting the guard disc 31. In this way, when the mowing assembly 100 encounters larger load and obstacles, the output shaft 111 is not easy to be damaged, which is beneficial to maintain the mowing stability and reliability of the mowing assembly 100.

[0099] In some embodiments of the present application, the connecting assembly 32 comprises a first connecting member 321 and a second connecting member 322. The first connecting member 321 is detachably connected with the output portion 11. The second connecting member 322 is rotationally connected with the first connecting member 321, and the guard disc 31 is connected with the second connecting member 322.

[0100] Exemplarily, the guard disc 31 can be connected with the second connecting member 322 through a locking bolt 7.

[0101] Thus, the guard blade 31 can be rotated relative to the output portion 11 through the rotation connection between the second connecting member 322 and the first connecting member 321. In this way, when the mower is used in a scenario with few obstacles, the guard blade 31 hardly rotates or rotates at a slow speed when the blade assembly 2 rotates at a high speed, so as to reduce the output power of the driving assembly 1 and save the energy consumption of the mower. When the mowing assembly 100 encounters an abnormal impact or a large resistance, the guard blade 31 can rotate in contact with the obstacles, so as to buffer the impact force and reduce the risk of damage or fracture of the output portion 11 due to excessive force, thereby improving the reliability of the mower.

[0102] Specifically, as shown in Figure 5 and Figure 6 The connecting assembly 32 further includes a bearing 323. The second connecting member 322 is rotationally connected with the first connecting member 321 through the bearing 323.

[0103] For example, the second connecting member 322 is formed with a bearing mounting hole. The first connecting member 321 is formed with a protruding portion. The protruding portion at least partially extends into the bearing mounting hole. The bearing 323 is sleeved on the protruding portion and accommodated in the bearing mounting hole.

[0104] For another example, the first connecting member 321 is formed with a bearing mounting hole. The second connecting member 322 is formed with a protruding portion. The protruding portion at least partially extends into the bearing mounting hole. The bearing 323 is sleeved on the protruding portion and accommodated in the bearing mounting hole.

[0105] The first connecting member 321 and the second connecting member 322 are rotationally connected through the bearing 323, and the friction resistance is small, so that the rotation of the guard blade 31 is more smooth and stable, thereby being beneficial to further saving the energy consumption of the mowing assembly 100.

[0106] In some embodiments of the present application, the number of bearings 323 can be multiple (two or more). The multiple bearings 323 are arranged along the axial direction of the output portion 11. Thus, the rotation friction resistance of the guard blade 31 relative to the blade assembly 2 is smaller, so that the rotation is more stable and reliable, and is more suitable for the mowing assembly 100 to perform the mowing operation in a large load and large impact working condition (for example, more obstacles, larger toughness of weeds, etc.).

[0107] In the case where the number of bearings 323 is multiple, a gasket 324 can be arranged between adjacent bearings 323. The gasket 324 can play a certain buffering and isolation role, reducing the rigid collision and vibration transmission between the bearings 323. When the guard cutter 31 is subjected to uneven grass resistance or other external forces during rotation, the gasket 324 can absorb and disperse these impact forces to a certain extent. Thus, the rotation of the bearings 323 is more stable, the rotation performance of the bearings 323 is improved, and thus the rotation of the guard cutter 31 is more stable and reliable.

[0108] Exemplarily, the bearing 323 can include a rolling bearing. The rolling bearing has a small friction coefficient, which can effectively improve the rotation performance of the guard cutter 31. Moreover, the rolling bearing has strong load-carrying capacity, high transmission efficiency, and a more compact structure.

[0109] Exemplarily, the bearing 323 can include a sliding bearing. The sliding bearing has a simple structure and low cost. Moreover, the sliding bearing has large load-carrying capacity and good impact resistance.

[0110] In some embodiments, for some low-load working conditions (for example, fewer obstacles, softer grass, etc.), the guard cutter 31 can be connected to the output portion 11 through the connecting assembly 32. Figure 2 As shown, the first connecting piece 321 and the second connecting piece 322 can also not be provided with the bearing 323. The first connecting piece 321 and the second connecting piece 322 can be directly connected through the third bolt 4. Exemplarily, the third bolt 4 can not be completely fastened to connect the first connecting piece 321 and the second connecting piece 322, so that the second connecting piece 322 can rotate relative to the first connecting piece 321 to a certain amplitude.

[0111] Of course, it should be understood by those skilled in the art that in some embodiments, especially in some lower load working conditions, the guard cutter 31 can also not be connected to the output portion 11 through the connecting assembly 32. That is, the guard cutter 31 can not rotate relative to the cutter assembly 2. As shown, Figure 4 The guard cutter 31 can also be directly connected to the cutter blade 22 through the first bolt 23 connecting the cutter blade 22 and the cutter main body 21, and can be detachably connected to the cutter blade 22. The cutter main body 21 is connected to the output portion 11. Thus, it is beneficial to save the number of parts and reduce the assembly difficulty of the guard cutter 31.

[0112] In some embodiments of the present application, as shown in Figure 5 and Figure 6 The first connecting piece 321 includes a first positioning portion 321a. The cutter assembly 2 includes a second positioning portion 25. When the first connecting piece 321 is connected to the output portion 11, the second positioning portion 25 cooperates with the first positioning portion 321a to be positioned.

[0113] Thus, the first connecting piece 321 and the cutter head assembly 2 can be positioned by the cooperation of the first positioning part 321a and the second positioning part 25, which can reduce the possibility of displacement and shaking of the first connecting piece 321 relative to the cutter head assembly 2, thereby further improving the connection reliability between the two.

[0114] Moreover, when connecting the first connecting piece 321 with the output part 11, the first connecting piece 321 can be accurately positioned by the cooperation of the first positioning part 321a and the second positioning part 25. The operator does not need to spend too much time to manually adjust the position of the first connecting piece 321 relative to the cutter head assembly 2, which reduces the complexity of the installation process and is conducive to improving the assembly efficiency.

[0115] Exemplarily, one of the first positioning part 321a and the second positioning part 25 comprises a positioning hole, and the other comprises a positioning boss. The positioning hole can be a round hole or a stepped hole. Similarly, the positioning boss can be a cylinder or a stepped cylinder composed of cylinder parts with different diameters.

[0116] Exemplarily, the first positioning part 321a and the second positioning part 25 can be magnetic parts with opposite magnetic properties, respectively.

[0117] The embodiments of the present application do not specifically limit the types and shapes of the first positioning part 321a and the second positioning part 25, and any positioning part that can realize the positioning function by cooperation is within the protection scope of the present application.

[0118] In addition, as shown in Figs. 1 and 2, the cutter head assembly 2 further comprises a third positioning part 26 in some embodiments. Figure 5 and Figure 6 The third connecting piece 112 comprises a fourth positioning part 112a. When the cutter head assembly 2 is connected with the output part 11, the third positioning part 26 is positioned by cooperating with the fourth positioning part 112a.

[0119] Thus, the cutter head assembly 2 and the third connecting piece 112 can be positioned by the cooperation of the third positioning part 26 and the fourth positioning part 112a, which can improve the connection reliability between the two, thereby improving the connection reliability of the cutter head assembly 2 and the output part 11. Moreover, it can also improve the connection accuracy of the cutter head assembly 2 and the third connecting piece 112, thereby improving the assembly efficiency.

[0120] Similarly, one of the third positioning part 26 and the fourth positioning part 112a comprises a positioning hole, and the other comprises a positioning boss. Alternatively, the third positioning part 26 and the fourth positioning part 112a can also be any other type of positioning part.

[0121] In some embodiments of the present application, the guard cutter head 31 is an integrally formed structural member.

[0122] 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.

[0123] 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.

[0124] 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.

[0125] 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.

[0126] 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.

[0127] 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.

[0128] 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.

[0129] 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.

[0130] 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.

[0131] Generally, when the size of the cutterhead assembly 2 is large or the rotating speed is high, the centrifugal force will also increase accordingly. Therefore, the strength requirement of the guard cutterhead 31 is higher, and the thickness of the guard cutterhead 31 needs to be appropriately increased to ensure the structural stability.

[0132] In some embodiments of the present application, as shown in Figure 5 the radius r1 of the guard cutterhead 31 is greater than or equal to the radius r2 of the cutterhead body 21 and is less than the cutting radius r3 of the cutterhead assembly 2.

[0133] The radius r1 of the guard cutterhead 31 being greater than or equal to the radius r2 of the cutterhead body 21 can make all the edges of the cutterhead body 21 be within the effective protection of the guard cutterhead 31. Thus, the risk of direct impact and damage of the cutterhead body 21 during work can be reduced, the service life of the cutterhead body 21 is improved, and a more stable and reliable mounting and connecting position is provided for the blade 22.

[0134] The cutting radius r3 of the cutterhead assembly 2 refers to the farthest cutting distance that the blade 22 can reach when the cutterhead assembly 2 rotates, which is usually the distance from the rotation center of the cutterhead assembly 2 to the farthest end of the blade 22. The cutting radius r3 of the cutterhead assembly 2 determines the maximum range that can be covered by the mower in one cutting, and is one of the important indicators for measuring the cutting capacity of the mower.

[0135] Since the cutting radius r3 of the cutterhead assembly 2 is determined by the extension range of the blade 22. Therefore, if the radius r1 of the guard cutterhead 31 is too large and comparable to or exceeds the cutting radius r3, it will limit the effective cutting range of the blade 22. The blade 22 cannot fully stretch to perform cutting work, thereby reducing the cutting efficiency of the mower, failing to achieve the expected cutting effect, and failing to meet the demand of large-area and high-efficiency mowing. Therefore, the radius r1 of the guard cutterhead 31 needs to be less than the cutting radius r3 of the cutterhead assembly 2.

[0136] In addition, the radius r1 of the guard cutterhead 31 being less than the cutting radius r3 of the cutterhead assembly 2 can also make the guard cutterhead 31 not easy to interfere or collide with the blade 22 during cutting. Thus, the blade 22 can rotate and cut freely and smoothly, reducing the risk of additional resistance, vibration or damage between the guard cutterhead 31 and the blade 22, thereby affecting the normal work and service life of the cutterhead assembly 2.

[0137] In some embodiments of the present application, as shown in Figure 7 the first operation hole 27 is arranged on the cutterhead assembly 2. The second operation hole 33 is arranged on the guard cutterhead assembly 3. When the guard cutterhead assembly 3 is installed on the output portion 11, the distance between the hole center of the first operation hole 27, the hole center of the second operation hole 33 and the axis of the output portion 11 is the same.

[0138] Since there can be relative rotation between the guard disc assembly 3 and the disc assembly 2, when the user installs or dismounts the guard disc assembly 3 and installs or dismounts the blade 22 on the disc assembly 2, the rotation between the two can be disadvantageous to the user's operation. However, the disc assembly 2 of the embodiment of the application is provided with the first operation hole 27. The guard disc assembly 3 is provided with the second operation hole 33. By inserting the fixing tool 5 into the first operation hole 27 and the second operation hole 33, the relative positions of the guard disc assembly 3 and the disc assembly 2 can be fixed, thereby facilitating the user's dismounting operation.

[0139] In addition, the hole centers of the first operation hole 27 and the second operation hole 33 are the same distance from the axis of the output portion 11. This enables the user to accurately align during the dismounting operation. The user does not need to spend extra time and effort to adjust the hole position during the dismounting process, and can quickly and accurately dismount the guard disc assembly 3 and the disc assembly 2 and the output portion 11 or quickly and accurately replace the blade 22, thereby improving the assembly efficiency and reducing the assembly difficulty.

[0140] In the related art, multiple clamps or special positions for fixing can be required to dismount the blade or the fixing bolt. However, the first operation hole 27 and the second operation hole 33 are provided in the present application, and no additional complex fixing device is required, so that the disc assembly 2 and the guard disc assembly 3 can be easily fixed in relative positions, thereby reducing the dismounting difficulty.

[0141] Exemplarily, the first operation hole 27 includes a blade mounting hole. Thus, the blade mounting hole serves as the first operation hole 27, and no additional mounting hole needs to be provided on the disc assembly 2, which is advantageous to reduce the production and processing cost.

[0142] Of course, it should be understood by those skilled in the art that in some other embodiments, the first operation hole 27 can also be another operation hole provided on the disc assembly 2. That is, the first operation hole 27 is an operation hole other than the blade mounting hole.

[0143] Exemplarily, the hole diameters of the first operation hole 27 and the second operation hole 33 are both greater than 2 mm. Thus, it is more conducive to the external fixing tool 5 to pass through.

[0144] In addition, it should be understood by those skilled in the art that the hole diameters of the first operation hole 27 and the second operation hole 33 can be the same or different. The shapes of the first operation hole 27 and the second operation hole 33 can be the same or different. The embodiments of the present application do not specifically limit the hole diameters and shapes of the first operation hole 27 and the second operation hole 33, as long as the distances between the hole centers of the first operation hole 27 and the second operation hole 33 and the axis of the output portion 11 are the same, and the first operation hole 27 and the second operation hole 33 can both allow the fixing tool 5 to pass through.

[0145] In some embodiments of the present application, as shown in Figure 8 The driving assembly 1 is installed on the protective member 6. The protective member 6 is located on the side of the cutter disc assembly 2 opposite to the guard disc assembly 3, and covers the periphery of the cutter disc assembly 2.

[0146] The driving assembly 1 is installed on the protective member 6. Such a layout can provide a stable support basis for the driving assembly 1. The driving assembly 1 can maintain good stability and reliability during operation, reducing the possibility of loosening or damage of the driving assembly 1 due to vibration or impact.

[0147] In addition, the driving assembly 1 is installed on the protective member 6. The position and structure of the protective member 6 can block the entry of foreign matters such as grass and stones into the driving assembly 1 to some extent. During the mowing process, the cutter disc assembly 2 rotates at high speed to cut grass, thereby generating a large amount of grass clippings and dust. If these grass clippings and dust enter the driving assembly 1, for example, the inside of the motor, the friction between the motor rotor and the stator will increase, the efficiency of the motor will decrease, and faults such as motor short circuit may occur. Therefore, the protective member 6 can act as a certain isolation barrier for the driving assembly 1.

[0148] In addition, the protective member 6 covers the periphery of the cutter disc assembly 2, which also reduces the possibility of the operator contacting the cutter disc assembly 2 in accidental situations. In some operation processes, such as adjusting the height of the mower or cleaning the blockage, if the operator accidentally touches the high-speed rotating cutter disc assembly 2, it may cause serious cutting injury. The presence of the protective member 6 greatly reduces this safety risk.

[0149] In addition, during the cutting process of the mower, the grass may splash outward at a certain speed. The protective member 6 can block the grass from splashing towards the operator or other locations around, reducing the possibility of the grass hitting the human body or hitting the surrounding objects, and improving the reliability of the mower during operation.

[0150] In some embodiments of the present application, as shown in Figure 8As shown, the third operation hole 28 is formed on the cutter disc assembly 2. The second operation hole 33 is formed on the guard disc assembly 3. The fourth operation hole 61 is formed on the guard 6. The distance between the center of the third operation hole 28, the center of the second operation hole 33, the center of the fourth operation hole 61 and the axis of the output part 11 is the same.

[0151] Since the cutter disc assembly 2 and the guard disc assembly 3 can rotate relative to the guard 6, it is not convenient for the user to disassemble the guard disc assembly 3 or replace the blade 22 of the cutter disc assembly 2. However, the third operation hole 28 is formed on the cutter disc assembly 2. The second operation hole 33 is formed on the guard disc assembly 3. The fourth operation hole 61 is formed on the guard 6. By inserting the fixing tool 5 into the second operation hole 33, the third operation hole 28 and the fourth operation hole 61, the relative positions between the guard disc assembly 3, the cutter disc assembly 2 and the guard 6 can be fixed, so that the user can disassemble more conveniently.

[0152] In addition, the distance between the center of the third operation hole 28, the center of the second operation hole 33, the center of the fourth operation hole 61 and the axis of the output part 11 is the same. Therefore, the user can accurately align when disassembling, and does not need to spend extra time and effort to adjust the hole position, so that the user can quickly and accurately assemble or disassemble the guard disc assembly 3, the cutter disc assembly 2 and the output part 11, or quickly and accurately disassemble the cutter disc assembly 2 and the output part 11, or quickly and accurately replace the blade 22, thereby improving the assembly efficiency and reducing the assembly difficulty.

[0153] Exemplarily, the diameters of the second operation hole 33, the third operation hole 28 and the fourth operation hole 61 are all greater than 2mm. Therefore, the external fixing tool 5 can pass through more conveniently.

[0154] In addition, those skilled in the art should understand that the diameters of the second operation hole 33, the third operation hole 28 and the fourth operation hole 61 can be the same or different. The shapes of the second operation hole 33, the third operation hole 28 and the fourth operation hole 61 can be the same or different. The embodiments of the present application do not specifically limit the diameters and shapes of the second operation hole 33, the third operation hole 28 and the fourth operation hole 61, as long as the distance between the center of the second operation hole 33, the center of the third operation hole 28, the center of the fourth operation hole 61 and the axis of the output part 11 is the same, and the second operation hole 33, the third operation hole 28 and the fourth operation hole 61 can be passed through by the fixing tool 5.

[0155] In some embodiments of the present 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 driving assembly 1 in the same projection plane perpendicular to the axis direction of the output part 11.

[0156] Thus, the second operation hole 33, the third operation hole 28 and the fourth operation hole 61 are arranged away from the driving assembly 1. The operator can directly observe the positions of the second operation hole 33, the third operation hole 28 and the fourth operation hole 61 without making corresponding marks on the shield 6, which is more convenient for the operator to use the fixing tool 5 to perform the fixing operation, thereby facilitating the subsequent disassembly operation.

[0157] In some embodiments of the present application, as shown in Figure 9 The minimum spacing distance h2 between the cutterhead assembly 2 and the shield 6 along the axis direction of the output portion 11 is in the range of 10 mm to 50 mm.

[0158] For example, the minimum spacing distance h2 between the cutterhead assembly 2 and the shield 6 along the axis direction of the output portion 11 can be 10 mm, 15 mm, 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, 45 mm or 50 mm, etc.

[0159] The minimum spacing distance h2 between the cutterhead assembly 2 and the shield 6 in the appropriate range can reduce the possibility of accidental contact between the shield 6 and the cutterhead assembly 2 in normal operation, thereby reducing the friction damage caused by the too small spacing distance between the shield 6 and the cutterhead assembly 2. Moreover, it can also ensure that the shield 6 effectively plays its protective role and reduce the risk of protection failure due to too large spacing distance.

[0160] Moreover, the minimum spacing distance h2 between the cutterhead assembly 2 and the shield 6 in the appropriate range can also form a good ventilation channel between the cutterhead assembly 2 and the shield 6, thereby facilitating the heat dissipation of the cutterhead assembly 2. The cutterhead assembly 2 can generate heat during high-speed rotation. The appropriate spacing distance between the cutterhead assembly 2 and the shield 6 can reduce the accumulation of heat, thereby reducing the risk of material aging of the cutterhead assembly 2 and performance degradation of the blade 22 due to excessive temperature, and prolonging the service life of the cutterhead assembly 2.

[0161] In addition, the minimum spacing distance h2 between the cutterhead assembly 2 and the shield 6 in the appropriate range can also effectively reduce the vibration transmission between the shield 6 and the cutterhead assembly 2 and improve the stability of the shield 6. It reduces the risk of loosening and damage of the shield 6 due to vibration and ensures the long-term reliable protection of the shield 6.

[0162] Generally, the larger the diameter of the cutterhead assembly 2, the larger the minimum spacing distance h2 between the cutterhead assembly 2 and the shield 6 should be.

[0163] In some embodiments of the present application, as shown in Figure 9As shown, the minimum spacing distance h3 between the guard cutter assembly 3 and the cutter assembly 2 along the axis direction of the output portion 11 is in the range of 5mm to 20mm.

[0164] For example, the minimum spacing distance h3 between the guard cutter assembly 3 and the cutter assembly 2 along the axis direction of the output portion 11 can be 5mm, 10mm, 15mm, or 20mm, etc.

[0165] If the spacing distance between the guard cutter assembly 3 and the cutter assembly 2 is too small, the blades 22 of the cutter assembly 2 can be excessively restricted by the guard cutter assembly 3, so that the blades 22 cannot fully swing and cut the grass, resulting in incomplete cutting of the grass or uneven cutting length of the cut grass. If the minimum spacing distance h3 between the guard cutter assembly 3 and the cutter assembly 2 is in the appropriate range, the blades 22 can smoothly cut the grass, thereby improving the neatness and quality of the cutting.

[0166] In addition, the appropriate spacing distance can also reduce the risk of wear and deformation caused by accidental collision between the cutter assembly 2 and the guard cutter assembly 3, thereby reducing the probability of mechanical failure and improving the service life of the grass cutting assembly 100.

[0167] Generally, the larger the diameter of the guard cutter 31 of the guard cutter assembly 3, the larger the minimum spacing distance h3 between the cutter assembly 2 and the guard cutter assembly 3 should be.

[0168] As a specific example, the grass cutting assembly of the grass cutter includes a cutting motor (drive assembly 1), a motor output shaft (output shaft 111), a flange (third connecting piece 112), a guard cutter adapter (first connecting piece 321), a guard cutter locking block (second connecting piece 322), a guard cutter bearing (bearing 323), a gasket 324, a cutting assembly locking screw (second mounting portion 24), a guard cutter locking screw (locking screw 7), and a guard cutter 31.

[0169] The flange has a mounting hole (first mounting portion 11a) formed thereon. When the guard cutter assembly 3 is arranged, the cutting cutter assembly (cutter assembly 2) and the guard cutter adapter are fixed to the mounting hole of the flange of the motor output shaft by 2 to 4 cutting assembly locking screws. The guard cutter assembly is fixed to the guard cutter adapter by the guard cutter assembly locking screw.

[0170] The guard cutter assembly includes a guard cutter locking block, a guard cutter bearing, a guard cutter, and a guard cutter locking screw. According to the load size, one or more guard cutter bearings can be provided. When multiple guard cutter bearings are provided, a gasket can be provided between the guard cutter bearings to improve the rotation performance of the bearings.

[0171] The guard bearing includes rolling bearings. For low load working conditions, the guard assembly can not be provided with rolling bearings, but through the sliding bearing or the direct cooperation of the guard locking block and the guard adapter.

[0172] Further, for low load working conditions, the cutting disc assembly and the guard assembly can not be relatively rotated, and the guard is directly locked on the cutting disc (disc body 21) by the guard blade screw (first bolt 23).

[0173] The guard is fixed on the guard locking block by 2-4 guard locking screws. The guard is provided with 2 or more uniformly distributed holes (second operating hole 33), which are aligned with the blade locking screw (first bolt 23) on the cutting disc (disc body 21), facilitating the replacement of the blade 22.

[0174] Further, the cutting disc can also be holed (third operating hole 28) corresponding to the position of the hole on the guard, and the guard (protective piece 6) can also be holed (fourth operating hole 61) corresponding to the position of the hole on the guard. When disassembling and assembling the blade or the guard locking screw, the tool (fixed tool 5) is inserted into the above-mentioned hole to fix the disc and the guard, facilitating the operation of the user. The diameter of the above-mentioned hole is greater than 2mm, and the position is far away from the rotation center of the cutting motor. In this way, the operator can conveniently observe these holes without marking, so that special marking is not required on the guard.

[0175] The cutting disc is provided with a plurality of boss features (second positioning part 25, third positioning part 26), which are respectively matched with the flange of the motor output shaft and the groove (first positioning part 321a, fourth positioning part 112a) of the guard adapter. Or the cutting disc is provided with a recess or hole feature (second positioning part 25, third positioning part 26), which is respectively matched with the protruding feature (first positioning part 321a, fourth positioning part 112a) of the flange of the motor output shaft and the guard adapter.

[0176] When the cutting disc is not configured with the guard, the cutting assembly locking screw directly locks the disc assembly on the motor output flange.

[0177] The radius r1 of the guard is greater than or equal to the radius r2 of the disc, and is less than the cutting radius r3 of the cutting disc assembly. The thickness h1 of the guard is 0.5-2mm. The larger the diameter of the guard, the greater the thickness h1. The distance h3 between the guard and the cutting disc is 5-20mm. The larger the diameter of the guard, the greater the distance h3. The distance h2 between the cutting disc and the guard is 10-50mm. The larger the diameter of the cutting disc, the greater the distance h2.

[0178] The cutting disc is generally provided with 2-6 cutting blades (blade 22). The larger the diameter of the cutting disc, the more the number of cutting blades.

[0179] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, those ordinarily skilled in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the present application. In particular, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way.

Claims

1. A lawn mowing assembly, characterized in that, 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, and the cutter guard assembly is detachably connected to the output section.

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.

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 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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