Cutting assembly and mower

Abstract

The utility model provides a cutting assembly and a mower, and relates to the technical field of mowers. The cutting assembly comprises a cutter head, a protection piece and a cutting piece. The cutter head is used for being connected to a mower body. The protection piece is buckled with the cutter head, and a protection space is defined between the protection piece and the cutter head; and the cutting piece is rotatably arranged in the protection space, at least part of the cutting piece extends to the outer side of the protection space, and the cutting piece is used for cutting operation. By means of the cutting assembly, the phenomenon of mud clamping or grass winding can be reduced, and damage to the cutting piece is reduced.

Description

Technical Field

[0001] This application relates to the field of lawnmower technology, and more particularly to a cutting assembly and a lawnmower. Background Technology

[0002] Currently, lawnmowers typically use a rotating blade disc to drive the cutting components on the disc for mowing. However, in these technologies, the cutting components are prone to getting stuck in mud or grass. This not only makes cleaning difficult but also affects the cutting efficiency of the cutting components, and excessive mud or grass buildup can even damage the cutting components. Utility Model Content

[0003] This application provides a cutting component and a lawnmower that can reduce mud jamming or grass entanglement and reduce damage to the cutting components.

[0004] On one hand, this application provides a cutting assembly including a blade disc, a protective member, and a cutting member. The blade disc is connected to the lawnmower body; the protective member is engaged with the blade disc, forming a protective space between the protective member and the blade disc; the cutting member is rotatably disposed within the protective space, and the cutting member at least partially extends to the outside of the protective space, and the cutting member is used for cutting operations.

[0005] The cutting assembly provided in this application is connected to the lawnmower body via a blade disc. The cutting assembly can cut lawns in different areas as the lawnmower body moves. When the protective component and the blade disc are engaged, a protective space is formed between them. Since the cutting component extends at least partially outside the protective space (meaning the other part of the cutting component is located within the protective space), the portion of the cutting component extending outside the protective space is used to cut plants. The protective space protects the cutting component located within the protective space, preventing contact between soil and weeds. Because the cutting component is rotatably mounted within the protective space, it can rotate into the protective space when encountering hard objects, thereby reducing damage to the cutting component. Therefore, the cutting assembly provided in this application can reduce the phenomenon of mud or grass getting stuck, and reduce damage to the cutting component.

[0006] In one possible implementation of this application, there are multiple protective spaces, which are arranged circumferentially along the protective member.

[0007] In one possible implementation of this application, the cutting assembly further includes a blocking member disposed between the cutter head and the protective member. The blocking member includes a protrusion that protrudes toward the center of the cutter head. The protrusion, the protective member, and the cutter head together form a protective space, which is located on the side of the protrusion near the edge of the cutter head.

[0008] In one possible implementation of this application, the blocking member further includes a blocking portion, which is disposed along the outer peripheral edge of the protective member or the outer peripheral edge of the cutter head, and the end of the blocking portion is connected to the end of the protrusion.

[0009] In one possible implementation of this application, the cutting assembly further includes a fixing member that passes sequentially through the cutter head, the cutting member, and the protective member, thereby rotatably positioning the cutting member within the protective space.

[0010] In one possible implementation of this application, the cutting assembly further includes a fixing member that passes sequentially through the cutter head and the protective member and is close to the blocking part.

[0011] In one possible implementation of this application, the cutting member has a mounting through hole for rotating the cutting member within a protective space. The cutting member also includes a cutting end away from the mounting through hole. The distance from the bottom surface of the protrusion to the mounting through hole is greater than the distance from the cutting end to the mounting through hole. The bottom surface is a surface on the protrusion that is parallel to the axis of the cutter head.

[0012] In one possible implementation of this application, one of the cutter head and the protective member is provided with a first mounting part adapted to the fixing member; the fixing member is connected to the first mounting part, and the cutting member is sleeved on the fixing member through the mounting through hole.

[0013] In one possible implementation of this application, the cutter head and the protective member without the first mounting portion have a clearance recess, which is aligned with the first mounting portion. The first end of the fixing member is connected to the first mounting portion, and the second end of the fixing member is accommodated in the clearance recess.

[0014] In one possible implementation of this application, one of the cutter head and the protective member is provided with a first mounting part adapted to the fixing member, and the other has a disassembly through hole, which is aligned with the first mounting part, and the fixing member passes through the disassembly through hole and connects to the first mounting part.

[0015] In one possible implementation of this application, one of the cutter head and the protective member has a boss that extends from the cutter head or the protective member into the protective space along the axial extension direction, and the boss matches the mounting through hole; the cutting member is sleeved on the boss through the mounting through hole.

[0016] In one possible implementation of this application, the protective member includes an abutment portion in the axial region near the cutter head; the abutment portion has a through opening along the extension direction of the axial line, the through opening being coaxial with the axial line; the abutment portion abuts against an abutment area on the cutter head.

[0017] In one possible implementation of this application, the abutting portion is formed by extending from the axial region of the protective member near the cutter head to the side near the cutter head, and the shape of the abutting area is adapted to the shape of the abutting portion.

[0018] In one possible implementation of this application, the outer diameter of the protective member is less than or equal to the outer diameter of the cutter head.

[0019] In one possible implementation of this application, a reinforcing portion is provided on the cutter head, which extends radially along the cutter head and is distributed circumferentially along the cutter head.

[0020] On the other hand, this application provides a lawnmower. The lawnmower includes: a lawnmower body, a cutting drive, and a cutting assembly of any one of the above; the fixed end of the cutting drive is disposed on the lawnmower body; the blade disc connection structure is connected to the output end of the cutting drive, and the cutting drive can drive the cutting assembly to rotate.

[0021] In one possible implementation of this application, the tool turret also includes a positioning structure, and a positioning part adapted to the positioning structure is provided on the output end. The positioning structure and the positioning part are connected to limit the position of the tool turret relative to the output end.

[0022] The lawnmower provided in this application, because it includes any of the cutting components mentioned above, has the same technical effect, namely, it can reduce mud or grass entanglement and reduce blade damage. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the lawnmower provided in this application;

[0024] Figure 2 One of the main views of the cutting component provided in this application;

[0025] Figure 3 One of the structural schematic diagrams of the cutting assembly provided in this application;

[0026] Figure 4 This is one of the structural schematic diagrams of the cutter head in the cutting assembly provided in this application;

[0027] Figure 5 This is the second schematic diagram of the cutter head in the cutting assembly provided in this application;

[0028] Figure 6 This is one of the structural schematic diagrams of the protective component in the cutting assembly provided in this application;

[0029] Figure 7 The second schematic diagram of the protective component in the cutting assembly provided in this application;

[0030] Figure 8 This is the second schematic diagram of the cutting assembly provided in this application;

[0031] Figure 9One of the exploded views (front view) of the structure of the cutting component provided in this application;

[0032] Figure 10 One of the partial structural cross-sectional diagrams (front view) of the cutting component provided in this application;

[0033] Figure 11 Provided for this application Figure 10 Enlarged view of part of D;

[0034] Figure 12 Second partial structural cross-sectional view of the cutting component provided in this application (front view);

[0035] Figure 13 Provided for this application Figure 12 Enlarged view of part of E in the middle;

[0036] Figure 14 This is the third structural schematic diagram of the cutting assembly provided in this application;

[0037] Figure 15 This is a partial structural schematic diagram of the image cutting component provided in this application;

[0038] Figure 16 The second exploded view (front view) of the cut component structure provided in this application;

[0039] Figure 17 The third schematic diagram of the partial sectional view of the cutting component provided in this application (front view);

[0040] Figure 18 Provided for this application Figure 17 Enlarged schematic diagram of part of F;

[0041] Figure 19 The fourth schematic diagram of the cutting component provided in this application.

[0042] Explanation of reference numerals in the attached figures:

[0043] 1-Cutter disc; 11-First mounting part; 12-Abutting area; 13-Connecting hole; 14-Reinforcing part; 15-Boss; 16-Connecting structure; 17-Positioning structure; 2-Protective part; 21-Avoiding recess; 22-Disassembly through hole; 23-Abutting part; 24-Through opening; 25-Connecting part; 3-Blocking part; 31-Protrusion; 311-Bottom surface; 32-Blocking part; 4-Protective space; 5-Cutting part; 51-Mounting through hole; 52-Cutting end; 6-Fixing part; 61-First end; 62-Second end; 7-Connecting part; 8-Lawn mower body; A-Radial; B-Axial direction; C-Circumferential; G-Axis. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the specific technical solutions of this application will be further described in detail below with reference to the accompanying drawings of the embodiments of this application. The following embodiments are used to illustrate this application, but are not intended to limit the scope of this application.

[0045] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more.

[0046] Furthermore, in the embodiments of this application, directional terms such as "upper," "lower," "left," and "right" are defined relative to the positions in which the components are schematically placed in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the position of the components in the accompanying drawings.

[0047] In the embodiments of this application, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium.

[0048] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0049] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0050] Lawn mowers have a wide range of applications, such as home gardens, parks, golf courses, and various lawn maintenance sites. When lawns grow too lush and affect aesthetics and daily activities, lawn mowers can trim them using their sharp cutting blades.

[0051] A lawnmower typically consists of a blade disc, a mowing motor, a drive motor, a control system, and casters. Generally, the blade disc is mounted on the main body of the lawnmower, and the cutting blades are mounted on the blade disc. The cutting blades use the rotation of the mowing motor to cut the grass. The high-speed rotation of the mowing motor greatly increases the mowing speed, saving workers' time and significantly reducing manpower.

[0052] Reference Figure 1 This application provides a lawnmower, which includes: a lawnmower body 8, a cutting drive and a cutting assembly; the fixed end of the cutting drive is disposed on the lawnmower body 8; the connecting structure 16 of the blade disc 1 is connected to the output end of the cutting drive, and the cutting drive can drive the cutting assembly to rotate.

[0053] In this embodiment, the cutting drive is used to connect the lawnmower body 8 and the cutting assembly, and drives the cutting assembly to rotate relative to the lawnmower body 8. The cutting drive can be a motor, electric motor, or engine, etc. For example, when the cutting drive is an electric motor, the fixed end of the electric motor (usually the motor housing or a specific mounting part) is mounted on the lawnmower body 8 by bolts, nuts, or other fastening devices, and the output end of the electric motor (usually the rotor shaft or a specific drive shaft) is connected to the cutting assembly through the connecting structure 16. The electric motor converts electrical energy into mechanical energy through the power system (such as a battery pack, power cord, etc.) on the lawnmower body 8 to drive the cutting assembly to rotate, so that the cutting assembly performs cutting operations.

[0054] In this embodiment, the connection between the cutter head 1 and the output end of the cutting drive can be a direct connection or an indirect connection, and the connection structure 16 can be adjusted according to the structure of the output end of the cutting drive. For example, when the cutting drive is an electric motor, the connection structure 16 can be a transmission component disposed on the cutter head 1, such as a drive shaft, gear, etc., connecting the output shaft of the electric motor to the transmission component on the cutter head 1, so that the mechanical energy of the motor drives the cutting assembly to rotate.

[0055] The lawnmower provided in this application embodiment achieves stable installation of the cutting assembly by setting the fixed end of the cutting drive component on the lawnmower body 8 and ensuring that the output end is tightly fitted with the connecting structure 16 on the cutter disc 1. Since the connecting structure 16 of the cutter disc 1 is connected to the output end of the cutting drive component, the cutting assembly can rotate at high speed under the drive of the cutting drive component, thus cutting weeds more effectively.

[0056] Reference Figure 2 and Figure 3In some embodiments of this application, the cutter head 1 further includes a positioning structure 17, and a positioning part adapted to the positioning structure 17 is provided on the output end. The positioning structure 17 and the positioning part are connected to limit the position of the cutter head 1 relative to the output end.

[0057] In this embodiment, the structure between the positioning structure 17 and the positioning part can be pin hole positioning, threaded positioning, magnetic positioning, slot positioning, etc. For example, see... Figure 2 and Figure 3 The positioning structure 17 can be a positioning protrusion set on the cutter head 1 in the area near the axis G. The positioning protrusion extends from the side of the cutter head 1 near the fixed end of the cutting drive member along the axis G direction B towards the fixed end of the cutting drive member. The positioning part on the fixed end of the cutting drive member can be set as a positioning recess that matches the positioning protrusion. When the cutter head 1 is connected to the output end of the cutting drive member, the positioning protrusion on the cutter head 1 and the positioning recess on the fixed end of the cutting drive member cooperate with each other to limit the movement between the cutter head 1 and the fixed end of the cutting drive member.

[0058] The lawnmower provided in this application embodiment has a positioning structure 17 and a positioning part that can limit the position of the blade disc 1 relative to the fixed end of the cutting drive component, improve the coaxiality and alignment of the connection between the blade disc 1 and the fixed end of the cutting drive component, reduce the positional offset of the blade disc 1 and the cutting drive component caused by installation errors or vibration, thereby improving the stability between the blade disc 1 and the fixed end of the cutting drive component, and also improving the stability of the cutting assembly when it rotates.

[0059] In related technologies, after a lawnmower has been working for a period of time, the cutting part 5 of the lawnmower is very prone to getting grass or mud stuck in it, especially the screws used to lock the cutting part 5, which directly leads to a decrease in the working efficiency of the lawnmower. If too much grass or mud is stuck, the cutting part 5 may also get stuck, preventing it from being thrown out or becoming stuck and unable to be thrown out, causing damage when the cutting part 5 hits a hard object. At the same time, cleaning the stuck grass or mud is also a very troublesome task.

[0060] Reference Figure 2 and Figure 3This application provides a cutting assembly including a blade disc 1, a protective member 2, and a cutting member 5. The blade disc 1 is connected to the lawnmower body 8; the protective member 2 is fastened to the blade disc 1, forming a protective space 4 between the protective member 2 and the blade disc 1; the cutting member 5 is rotatably disposed within the protective space 4, and at least partially extends to the outside of the protective space 4, and is used for cutting operations. In this embodiment, the blade disc 1 is connected to the output shaft of a cutting drive, and the blade disc 1 provides support for the protective member 2 and the cutting member 5, and transmits power from the output end of the cutting drive. The blade disc 1 can be configured in any shape, typically designed as a circle or a similar circle. There may be no relative rotation between the protective member 2 and the blade disc 1; the blade disc 1 drives the protective member 2 to rotate together under the drive of the output shaft of the drive.

[0061] Reference Figure 6 and Figure 7 In this embodiment, the protective element 2 can be ring-shaped, cover-shaped, or other shapes, depending on the overall design of the cutting assembly and protection requirements. The protective element 2 can be made of wear-resistant and corrosion-resistant materials, such as metal, plastic, or composite materials. For example, the protective element 2 can be a thin metal or plastic part that is not easily deformed. When the protective element 2 is a metal part, its thickness can be 0.5 mm to 1.5 mm; when the protective element 2 is a plastic part, its thickness can be 2 mm to -5.5 mm.

[0062] Reference Figure 8 In this embodiment, the protective component 2 is connected to the cutter head 1 by fixing the protective component 2 to the cutter head 1 with bolts. This method facilitates the disassembly and replacement of both the protective component 2 and the cutter head 1, and the stability of the protective component 2 can be controlled by adjusting the tightness of the bolts. Alternatively, the protective component 2 can be welded to the cutter head 1 to form an integral structure, which can improve the strength and stability of both the protective component 2 and the cutter head 1. Other connection methods are also possible for the protective component 2 and the cutter head 1.

[0063] In this embodiment, the protective space 4 is a semi-enclosed space. When the cutting assembly performs cutting operations, it rotates at high speed under the drive of the cutting drive. Due to centrifugal force, impurities such as dirt and weeds are thrown away from the cutter head 1 and the cutting component 5. Since the opening direction of the protective space 4 is far from the axis G of the cutter head 1, these impurities are less likely to directly enter the interior of the protective space 4. At the same time, the high-speed rotation of the cutting assembly under the drive of the cutting drive results in a higher air pressure inside the protective space 4 than outside, reducing the likelihood of dirt and weeds entering the protective space 4.

[0064] In this embodiment, the cutting element 5 is disposed within the protective space 4. A portion of the cutting element 5 is located inside the protective space 4, supported by the side walls and bottom of the protective space 4, while the remaining portion extends beyond the opening of the protective space 4 to contact and cut weeds and other vegetation. At least a portion of the cutting element 5 is located outside the protective space 4. This portion of the cutting element 5 not only directly participates in cutting during operation but also serves to shield against external impurities. When the cutting element 5 rotates, its outer rotation trajectory forms a relatively closed area, further reducing the chance of impurities entering the protective space 4.

[0065] In this embodiment, the cutting element 5 is rotatably disposed within the protective space 4. As the cutting assembly rotates at high speed, the cutting element 5 is thrown out into the working area due to centrifugal force. In the working area, the cutting element 5 contacts the plant to be cut, thus cutting the plant. When the cutting element 5 encounters a hard object during the cutting process, the impact force generated by the collision will temporarily change the trajectory of the cutting element 5. The cutting part of the cutting element 5 can rotate back into the protective space 4 to protect the cutting element 5. When the lawnmower passes through the area where the hard object is located, the cutting element 5 is thrown out into the working area again due to centrifugal force under the high-speed rotation of the cutting assembly.

[0066] In this embodiment, when the cutting element 5 is rotated within the protective space 4, it can be connected by elastic elements such as springs and rubber pads to provide buffering and rotation functions for the cutting element 5 when it encounters a hard object.

[0067] In this embodiment, when the cutting element 5 is rotatably disposed within the protective space 4, the cutting element 5 may include one or more bearing seats for mounting bearings. The bearing seats are fixed to the fixed structure within the protective space 4 by bolts or other fastening methods. The bearings are installed inside the bearing seats, with the inner ring of the bearing connected to the cutting element 5 and the outer ring fixed to the bearing seat. The cutting element 5 may also include a rotating shaft, with one end connected to the cutting element 5 and the other end mounted to the fixed structure within the protective space 4 via a bushing. The cutting element 5 may also have other structures to allow it to be rotatably disposed within the protective space 4.

[0068] In this embodiment, the protective member 2 is fastened to the cutter head 1, forming a protective space 4 between the protective member 2 and the cutter head 1. The structure forming the protective space 4 can be a recessed portion on the cutter head 1, directed away from the protective member 2. When the cutter head 1 and the protective member 2 are fastened, a space is formed between the cutter head 1 and the protective member 2 in the area of ​​the recessed portion on the cutter head 1. The recessed portion can also be provided on the protective member 2. Alternatively, other structures can be present between the protective member 2 and the cutter head 1, forming the protective space 4 when the protective member 2 and the cutter head 1 are fastened together, with the protective member 2, the cutter head 1, and other structures all surrounding each other.

[0069] In another embodiment, the cutting assembly includes a base and a cutting element 5. The base has a connecting structure 16 and is connected to the lawnmower body 8 through the connecting structure 16. A groove is provided on the base, forming a protective space 4. In the radial direction A of the base, the opening direction of the protective space 4 is away from the axis G of the base and is located on the circumferential side C of the base. The cutting element 5 is disposed in the protective space 4, and at least part of the cutting element 5 is located outside the protective space 4. The part of the cutting element 5 located outside the protective space 4 is used for cutting operations.

[0070] In this embodiment, the protective space 4 formed by the groove has an opening in the radial direction A of the base away from the base axis G. That is, the opening of the groove on the base is located on the circumferential side C of the base. The groove on the base has a certain depth in the radial direction A of the base, and the interior of the groove forms a protective space 4. The size of the protective space 4 depends on the depth of the groove in the radial direction A of the base and the height of the groove in the axial direction of the base. A groove of appropriate shape and size can be machined on the base according to the size, shape and required protection range of the cutting piece 5. The groove can accommodate most of the structure of the cutting piece 5 and ensure that the cutting piece 5 has sufficient room to move during operation.

[0071] In this embodiment, the shape, size, and depth of the groove can be determined based on the size and shape of the cut piece 5 and the required level of protection. The groove can be created by milling, drilling, or casting to ensure its precision and durability.

[0072] The cutting assembly provided in this application is connected to the lawnmower body 8 via a blade disc 1. The cutting assembly can cut lawns in different areas as the lawnmower body 8 moves. When the protective member 2 and the blade disc 1 are engaged, a protective space 4 is formed between them. Since the cutting member 5 extends at least partially to the outside of the protective space 4 (i.e., the other part of the cutting member 5 is located within the protective space 4), the cutting member 5 extending outside the protective space 4 is used to cut plants. The protective space 4 protects the cutting member 5 located within the protective space 4, preventing contact between soil and weeds. Because the cutting member 5 is rotatably mounted within the protective space 4, it can rotate into the protective space 4 when it encounters a hard object, thereby reducing damage to the cutting member 5. Therefore, the cutting assembly provided in this application can reduce the phenomenon of mud or grass getting stuck, and reduce damage to the cutting member 5.

[0073] Reference Figure 3 , Figure 4 and Figure 5 In some embodiments of this application, there are multiple protective spaces 4, and the multiple protective spaces 4 are arranged along the circumferential direction C of the protective member.

[0074] In this embodiment, there are multiple protective spaces 4. For example, there can be at least two, but also three, four, five, six, etc., and this application does not limit this. The multiple protective spaces 4 are arranged along the circumferential direction C of the protective member 2. For example, when the number of protective spaces 4 is an even number such as two or four, the protective spaces 4 can be evenly arranged around the circumferential direction C of the protective member 2; the protective spaces 4 can also be symmetrically distributed along the diameter of the protective member 2 around the circumferential direction C of the protective member 2. When the number of protective members 2 is an odd number such as three or six, the protective spaces 4 can be evenly arranged around the circumferential direction C of the protective member 2.

[0075] Since multiple protective spaces 4 are arranged along the circumferential direction C of the protective component 2, the dynamic balance of the cutting component can be improved when the cutting component rotates at high speed, and the noise generated by the collision caused by instability when the cutting component rotates at high speed can be reduced.

[0076] Reference Figure 3 , Figure 6 and Figure 9 In some embodiments of this application, the cutting assembly further includes a blocking member 3, which is disposed between the cutter head 1 and the protective member 2. The blocking member 3 includes a protrusion 31 that protrudes toward the center of the cutter head 1. The protrusion 31, the protective member 2, and the cutter head 1 together form a protective space 4, which is located on the side of the protrusion 31 near the edge of the cutter head 1.

[0077] Reference Figure 3 In this embodiment, the blocking member 3 is disposed between the cutter head 1 and the protective member 2. That is, when the protective member 2 and the cutter head 1 are fastened together, the blocking member 3 is disposed between the opposite sides of the protective member 2 and the cutter head 1. After the protective member 2 and the cutter head 1 are connected, there is a gap between the protective member 2 and the cutter head 1. Within this gap, the blocking member 3 extends from the side surface of the protective member 2 near the cutter head 1 toward the cutter head 1, or the blocking member 3 extends from the side surface of the cutter head 1 near the protective member 2 toward the cutter head 1. In this way, the blocking member 3 can form a blocking barrier in the axial direction of the cutter head 1 within the gap between the protective member 2 and the cutter head 1.

[0078] In this embodiment, when the protective member 2 and the cutter head 1 are engaged, the blocking member 3 can abut against the protective member 2 and the cutter head 1. In this way, the blocking member 3 effectively prevents external soil, water, weeds, etc. from entering the interior of the protective space 4, and also reduces the relative movement between the protective member 2 and the cutter head 1 caused by vibration or impact, thereby improving the stability of the overall structure.

[0079] In this embodiment, there can be multiple blocking components 3, which can be either an integrated design or a separate design. Multiple blocking components 3 can be integrated using processes such as injection molding, die casting, or forging. An integrated design results in a compact structure, strong overall integrity, and reduced assembly errors. Multiple blocking components 3 can be connected using screws, clips, or magnetic attachment, and then fixed to the protective component 2 or the cutter head 1. This separate connection facilitates individual replacement of damaged parts, reducing maintenance costs.

[0080] In this embodiment, to improve the strength and durability of the blocking member 3, the blocking member 3 can be made of the same material as the protective member 2 or a material with higher wear resistance and corrosion resistance. The shape of the blocking member 3 can be adjusted according to the specific shape and size of the cutter head 1 so that the blocking member 3 can fit tightly with the cutter head 1. For example, when the surface of the cutter head 1 has an uneven structure, the blocking member 3 can be a shape that matches the cutter head 1 to improve the sealing effect. In addition, anti-slip or shock-absorbing structures can be added to the blocking member 3 to further improve the stability and safety of the overall structure.

[0081] In this embodiment, the blocking member 3 includes a protrusion 31 that protrudes toward the center of the cutter head 1, as shown in the reference. Figure 6 The protrusion 31 is formed in the radial direction of the cutter head 1, protruding towards the center of the cutter head 1, and the center of the cutter head 1 is on the axis of the cutter head 1. When the protective member 2 and the cutter head 1 are fastened together, the blocking member 3 abuts against the protective member 2 and the cutter head 1. At this time, the side of the protrusion 31 away from the axis of the cutter head 1 and the opposite side of the protective member 2 and the cutter head 1 can be enclosed to form a protective space 4. The protective space 4 has an opening, and the opening direction of the protective space 4 is away from the axis of the cutter head 1 and is located on the circumferential side of the cutter head 1.

[0082] Reference Figure 3 , Figure 6 and Figure 8 In some embodiments of this application, the blocking member 3 further includes a blocking portion 32, which is disposed along the outer peripheral edge of the protective member 2 or the outer peripheral edge of the cutter head 1, and the end of the blocking portion 32 is connected to the end of the protrusion 31.

[0083] In this embodiment, the end of the blocking part 32 is connected to the end of the protrusion 31. Since the blocking part 32 is provided along the outer peripheral edge of the protective member 2 or the outer peripheral edge of the cutter head 1, the blocking part 32 is closer to the outer peripheral edge of the protective member 2 or the cutter head 1 than the protrusion 31. Since the protrusion 31 is formed by the blocking member 3 protruding towards the center of the cutter head 1, the end of the protrusion 31 will face away from the center of the cutter head 1, that is, the end of the protrusion 31 faces the side described by the blocking part 32. At this time, the end of the blocking part 32 is connected to the end of the protrusion 31, so that the blocking part 32 and the protrusion 31 can form a whole. When the cutter head 1 and the protective member 2 are fastened, the blocking part 32 and the protrusion 31 are located in the gap between the cutter head 1 and the protective member 2.

[0084] In this embodiment, the lengths of the blocking part 32 and the protrusion 31 extending between the cutter head 1 and the protective member 2 can be the same, and the ends of the blocking part 32 and the protrusion 31 can be an integral structure, which can be connected by welding or other means.

[0085] The cutting assembly provided in this application embodiment has the blocking part 32 connected to the end of the protrusion 31. The blocking part 32 is provided along the outer peripheral edge of the protective member 2 or the outer peripheral edge of the cutter disc 1. Thus, when the cutter disc 1 and the protective member 2 are fastened together, the blocking part 32 and the protrusion 31 can abut against the opposite sides of the cutter disc 1 and the protective member 2, thereby forming a space between the cutter disc 1, the protective member 2, the blocking part 32 and the protrusion 31, thereby preventing external dust and other debris from entering between the cutter disc 1 and the protective member 2.

[0086] In some embodiments of this application, the cutting assembly further includes a fixing member 6, which passes sequentially through the cutter head 1, the cutting member 5, and the protective member 2, and rotatably positions the cutting member 5 within the protective space 4.

[0087] In this embodiment, the fixing member 6 can be a pin, a buckle, a screw, a rivet, etc. For example, the fixing member 6 is a screw, which passes sequentially through the cutter head 1, the cutting member 5, and the protective member 2. There is a rotational gap between the cutting member 5 and the screw, allowing the cutting member 5 to rotate relative to the screw, thereby rotatably positioning the cutting member 5 within the protective space 4.

[0088] In some embodiments of this application, the cutting assembly further includes a fixing member 6, which passes sequentially through the cutter head 1 and the protective member 2, and is close to the blocking part 32.

[0089] In this embodiment, the fixing member 6 can be a pin, buckle, screw, rivet, etc. The fixing member 6 is close to the blocking part 32, which can fix the cutting member 5 in a fixed position within the protective space 4 close to the blocking part 32. Since the blocking part 32 is set along the outer peripheral edge of the protective member 2 or the outer peripheral edge of the cutter head 1, the cutting member 5 is close to the outer peripheral edge of the protective member 2 or the cutter head 1, which makes it easier for part of the cutting member 5 to extend out of the protective space 4 to cut the plant.

[0090] Reference Figure 3 and Figure 8 In some embodiments of this application, the cutting member 5 has a mounting through hole 51 for rotating the cutting member 5 within the protective space 4. The cutting member 5 also includes a cutting end 52 away from the mounting through hole 51. The distance from the bottom surface 311 of the protrusion 31 to the mounting through hole 51 is greater than the distance from the cutting end 52 to the mounting through hole 51. The bottom surface 311 is a surface on the protrusion 31 that is parallel to the axis of the cutter head 1.

[0091] In this embodiment, the mounting through hole 51 can be circular, square, polygonal, etc., and the diameter of the mounting through hole 51 can be adjusted according to the diameter of the fixing member 6. The diameter of the mounting through hole 51 can be equal to or greater than the diameter of the fixing member 6. For example, when the diameter of the mounting through hole 51 is greater than the diameter of the fixing member 6, it facilitates the rotation of the cutting member 5 around the fixing member 6.

[0092] In this embodiment of the application, the cutting element 5 can be a blade with an integral structure, or it can be a segmented structure. For example, the area where the cutting element 5 is connected to the protective space 4 may not be provided with a cutting blade for cutting, while the cutting end 52 away from the mounting through hole 51, which is the area where the actual cutting operation is performed, may be provided with a cutting blade, saw blade, or other components.

[0093] In this embodiment, the bottom surface 311 is the surface on the protrusion 31 that is parallel to the axis of the cutter head 1. The distance from the bottom surface 311 of the protrusion 31 to the mounting through hole 51 is greater than the distance from the cutting end 52 to the mounting through hole 51, so that the cutting part 5 can rotate around the mounting through hole 51 once in the protective space 4, that is, the cutting part of the cutting part 5 can be completely accommodated in the protective space 4.

[0094] The cutting component 5 is rotatably mounted within the protective space 4 through the mounting through hole 51. When the cutting component 5 encounters a hard object during cutting, it rotates back into the protective space 4 under the impact force, thereby reducing the possibility of the cutting component 5 being damaged or flying out due to direct collision. This enhances the safety of the cutting assembly and reduces wear and damage to the cutting component 5.

[0095] The cutting assembly provided in this application embodiment has a mounting through hole 51 that provides stable rotational support for the cutting component 5. Since the distance from the bottom surface 311 of the protrusion 31 to the mounting through hole 51 is greater than the distance from the cutting end 52 to the mounting through hole 51, the blade will not hit the bottom surface 311 of the groove when rotating within the protective space 4, thus ensuring smooth blade rotation and improving the protective effect of the protective space 4 on the cutting component 5.

[0096] Reference Figure 8 , Figure 9 ,and Figure 10 In some embodiments of this application, one of the cutter head 1 and the protective member 2 is provided with a first mounting part 11 adapted to the fixing member 6; the fixing member 6 is connected to the first mounting part 11, and the cutting member 5 is sleeved on the fixing member 6 through the mounting through hole 51.

[0097] In this embodiment, the fixing member 6 is used to connect the cutting member 5 to the cutter head 1 or the protective member 2. The fixing member 6 can be a pin, and the first mounting part 11 can be a hole or groove adapted to the pin. The pin passes through the mounting through hole 51 and the first mounting part 11 to connect the cutting member 5 to the cutter head 1 or the protective member 2. The fixing member 6 can also be a buckle, and the first mounting part 11 can be a slot or latch adapted to the buckle. One end of the buckle passes through the mounting through hole 51 and engages with the slot or latch on the first mounting part 11, while the other end of the buckle abuts against the cutting member 5 to fix the cutting member 5. The fixing member 6 can also be a screw, rivet, etc. In the cutting assembly provided in this embodiment, the connection between the fixing member 6 and the first mounting part 11 provides stable support for the cutting member 5. By fitting the cutting member 5 onto the fixing member 6 through the mounting through hole 51, the cutting member 5 can be firmly fixed in the required position, and the cutting member 5 can also rotate around the fixing member 6 within the protective space 4. At the same time, it can reduce the contact between the fixing part 6 of the fixing part 5 and other objects on the ground grass, reduce the risk of the fixing part 6 loosening, and reduce the problem of the cutting part 5 flying out after the fixing part 6 loosens.

[0098] Reference Figure 3 , Figure 6 , Figure 10 and Figure 11 In some embodiments of this application, the cutter head 1 and the protective member 2 without the first mounting part 11 have a relief recess 21, the relief recess 21 is aligned with the first mounting part 11, the first end 61 of the fixing member 6 is connected to the first mounting part 11, and the second end 62 of the fixing member 6 is accommodated in the relief recess 21.

[0099] In this embodiment of the application, at least one of the cutter head 1 and the protective member 2 is provided with a first mounting part 11 adapted to the fixing member 6. When the cutter head 1 is provided with the first mounting part 11, the protective member 2 has a relief recess 21 that is aligned with the first mounting part 11. When the protective member 2 is provided with the first mounting part 11, the cutter head 1 has a relief recess 21 that is aligned with the first mounting part 11.

[0100] In this embodiment, the size of the clearance recess 21 can be adjusted according to the size of the second end 62 of the fastener 6. For example, when the fastener 6 is a screw, the first end 61 of the screw (such as the tip or end of the screw) passes through the mounting through hole 51, and the second end 62 of the screw (such as the head of the screw) abuts against the cutting member 5. At this time, the second end 62 of the screw can be accommodated in the clearance recess to reduce the space occupied by the screw head between the protective member 2 and the cutter head 1.

[0101] The cutting assembly provided in this application embodiment has a first end 61 of the fixing member 6 connected to the first mounting part 11, and a second end 62 of the fixing member 6 accommodated in the relief recess 21. This can shorten the distance between the protective member 2 and the cutting disc 1 in the axial direction, thereby making the structure between the cutting disc 1 and the protective member 2 more compact. It can also make the protective member 2 farther away from the ground when the cutting assembly is working, reducing the wear of the protective member 2 and improving the grass cutting effect.

[0102] Reference Figure 12 , Figure 13 , Figure 14 and Figure 15 In some embodiments of this application, one of the cutter head 1 and the protective member 2 is provided with a first mounting part 11 adapted to the fixing member 6, and the other has a disassembly through hole 22. The disassembly through hole 22 is aligned with the first mounting part 11, and the fixing member 6 passes through the disassembly through hole 22 and is connected to the first mounting part 11.

[0103] In this embodiment, since the disassembly through hole 22 is aligned with the first mounting part 11 and the fixing member 6 passes through the disassembly through hole 22 and is connected to the first mounting part 11 to connect the cutting member 5 in the protective space 4, one of the cutter head 1 and the protective member 2 is provided with the first mounting part 11, and the other is provided with the disassembly through hole 22 that is adapted to the first mounting part 11.

[0104] In this embodiment, the type of fastener 6 can be selected according to actual needs, such as bolts, screws, pins, or clips. The specifications of the fastener 6 are adapted to the disassembly through hole 22 and the first mounting part 11 to improve the tightness and reliability of the connection.

[0105] In the embodiments of this application, by way of example, refer to Figure 12 , Figure 13 and Figure 14The fixing component 6 is a screw. The protective component 2 is provided with a disassembly through hole 22 that matches the screw specification. The cutting component 5 is provided with a mounting through hole 51 that matches the screw specification. The cutter head 1 is provided with a first mounting part 11, which is a threaded hole that matches the screw specification. The screw passes through the disassembly through hole 22 on the protective component 2, passes through the mounting through hole 51 on the cutting component 5, and connects with the threaded hole on the cutter head 1, thereby connecting the cutting component 5 in the protective space 4.

[0106] The cutting assembly provided in this application embodiment, through the alignment design of the disassembly through hole 22 and the first mounting part 11, allows the fixing member 6 to directly pass through the disassembly through hole 22 and be firmly connected to the first mounting part 11, thereby simplifying the installation process and improving assembly efficiency. When it is necessary to replace or maintain the cutter head 1 or the protective member 2, the cutter head 1 or the protective member 2 can be separated from the first mounting part 11 by loosening the fixing member 6, saving time and labor costs.

[0107] Reference Figure 16 , Figure 17 and Figure 18 In some embodiments of this application, one of the cutter head 1 and the protective member 2 has a boss 15. The boss 15 extends from the cutter head 1 or the protective member 2 into the protective space 4 along the axial extension direction, and the boss 15 matches the mounting through hole 51. The cutting member 5 is sleeved on the boss 15 through the mounting through hole 51.

[0108] In this embodiment, one of the cutter head 1 and the protective member 2 has a boss 15. The cutting member 5 is sleeved on the boss 15 through the mounting through hole 51. The cutting member 5 can rotate around the boss 15. The mounting through hole 51 on the cutting member 5 can be adjusted according to the size of the boss 15.

[0109] In this embodiment, the boss 15 can be disposed on either the cutter head 1 or the protective member 2. For example, see... Figure 17 and Figure 18 The cutter head 1 is provided with a boss 15, which has a threaded hole inside. The boss 15 extends from the cutter head 1 into the protective space 4 along the extension direction of the axis G. The cutting part 5 is sleeved on the boss 15 through the mounting through hole 51. The protective part 2 has a disassembly through hole 22 that is aligned with the boss 15. The fixing part 6 is connected to the threaded hole in the boss 15 through the disassembly through hole 22 to fix the cutting part 5 on the boss 15.

[0110] In another embodiment, a boss 15 is provided on the cutter head 1. The boss 15 extends from the cutter head 1 into the protective space 4 along the extension direction of the axis G. The cutting element 5 is sleeved on the boss 15 through the mounting through hole 51. When the protective element 2 is installed on the cutter head 1, the boss 15 abuts against the protective element 2 to place the cutting element 5 in the protective space 4.

[0111] The cutting assembly provided in this application embodiment has a cutting component 5 fitted onto the boss 15 through a mounting through hole 51, which forms a stable mechanical connection between the cutting component 5 and the boss 15. This not only improves the firmness of the two sections, but also prevents the cutting component 5 from loosening and falling off during operation, thereby enhancing the overall stability and safety of the cutting assembly.

[0112] Reference Figure 4 , Figure 7 and Figure 8 In some embodiments of this application, the protective member 2 near the axial region of the cutter head 1 includes an abutment portion 23; the abutment portion 23 has a through opening 24 along the extension direction of the axial line, the through opening 24 being coaxial with the axial line; the abutment portion 23 abuts against the abutment region 12 on the cutter head 1.

[0113] In this embodiment, the abutment portion 23 has a through opening 24 extending along the axial direction. Since the abutment portion 23 is located near the axial region of the cutter head 1, meaning the abutment portion 23 and the cutter head 1 are coaxial, this improves the stability of the protective component 2. The through opening 24 reduces the weight of the protective component 2, reduces energy consumption, and improves the cutting efficiency of the cutting assembly. The shape of the through opening 24 can be circular, square, or other shapes.

[0114] Reference Figure 4 , Figure 7 and Figure 8 In some embodiments of this application, the abutment portion 23 is formed by extending from the axial region of the protective member 2 near the cutter head 1 to the side near the cutter head 1, and the abutment region 12 is adapted to the shape of the abutment portion 23.

[0115] In this embodiment, the protective member 2 includes an abutment portion 23 near the axis G. The main function of the abutment portion 23 is to abut against the abutment area 12 on the cutter head 1 to stabilize the relative position between the protective member 2 and the cutter head 1. Simultaneously, it seals the gap between the protective member 2 and the cutter head 1 through the abutment portion 23 and the abutment area 12, reducing the entry of dirt and other debris between them. The shape of the abutment portion 23 matches the shape of the abutment area 12 to improve contact and positioning between the protective member 2 and the cutter head 1. The shapes of the abutment portion 23 and the abutment area 12 can include planar surfaces, curved surfaces, or complex shapes with specific contours, which can be determined according to the requirements of the cutting assembly.

[0116] The cutting assembly provided in this application embodiment has a through opening 24 on the abutment portion 23 near the axis G region of the protective member 2, which makes the protective member 2 form a ring shape. This reduces the contact area between the cutter head 1 guard plate and the grass, thereby reducing power consumption and weight. Since the abutment portion 23 extends from the protective member 2 towards the side near the cutter head 1 and abuts against the abutment area 12 on the cutter head 1, after the abutment portion 23 and the abutment area 12 abut against each other, the edge of the through opening 24 on the protective member 2 and the cutter head 1 can abut against each other, reducing the amount of dirt and debris entering between the protective member 2 and the cutter head 1 through the through opening 24.

[0117] In some embodiments of this application, the outer diameter of the protective member 2 is less than or equal to the outer diameter of the cutter head 1.

[0118] In this embodiment, the material of the protective component 2 can possess good wear resistance, corrosion resistance, impact resistance, and appropriate elasticity. Furthermore, by optimizing the thickness, hardness, and surface treatment parameters of the protective component 2 material, the durability and safety of the protective component 2 can be further improved.

[0119] The cutting assembly provided in this application embodiment has a smaller contact area between the protective member 2 and the surrounding environment when the cutting assembly is working, because the outer diameter of the protective member 2 is smaller than or equal to the outer diameter of the cutter head 1. This reduces the heat and wear generated by friction on the protective member 2. This helps to extend the service life of the protective member 2 and the cutter head 1, and reduces noise and vibration caused by friction.

[0120] In this embodiment, the cutter head 1 and the protective member 2 are detachably connected. The connection structure 16 between the cutter head 1 and the protective member 2 can be a bolt connection, a snap-fit ​​connection, or a magnetic connection, etc. For example, see... Figure 8 , Figure 14 and Figure 15 The cutter head 1 is provided with a connecting hole 13, and the protective member 2 is provided with a connecting part 25. The connecting hole 13 and the connecting part 25 are aligned and arranged. The connecting member 7 detachably connects the cutter head 1 and the protective member 2 through the connecting hole 13 and the connecting part 25. The number of connecting holes 13 and connecting parts 25 can be arbitrary, and the connecting member 7 can be a screw, rivet, etc. This application does not limit the number of these components.

[0121] The cutting assembly provided in this application embodiment facilitates the maintenance and replacement of the cutter head 1, the protective component 2, or the cutting component 5 because the cutter head 1 and the protective component 2 are detachably connected, and the installation is simple.

[0122] Reference Figure 3 and Figure 5 In some embodiments of this application, a reinforcing portion 14 is provided on the cutter head 1. The reinforcing portion 14 extends radially A on the cutter head 1 and is distributed circumferentially C on the cutter head 1.

[0123] In this embodiment, the reinforcing part 14 can be of various shapes, such as ribs, stiffeners, corrugated structures, or mesh structures. These shapes can effectively increase the strength of the cutter head 1, thereby improving its bending and torsional resistance. The dimensions (such as height, width, and thickness) of the reinforcing part 14 should be determined according to the specific dimensions of the cutter head 1, the required load, and the material properties. Generally speaking, the larger the reinforcing part 14, the more obvious the reinforcing effect.

[0124] In another embodiment, the reinforcement 14 can also be non-uniformly distributed. For example, the density and size of the reinforcement 14 can be increased in areas where the cutter head 1 is subjected to greater force, while it can be reduced accordingly in areas where the force is less.

[0125] The cutting assembly provided in this application embodiment has a reinforcing part 14 that extends along the axial direction B and is distributed along the circumferential direction C of the cutter head 1, which can enhance the strength of the cutter head 1 and improve the stability of the cutter head 1 when rotating at high speed.

[0126] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A cutting assembly for connection to a lawnmower body, characterized in that, include: A blade disc, which is connected to the lawnmower body; A protective component is fastened to the cutter head, forming a protective space between the protective component and the cutter head; A cutting element, rotatably disposed within the protective space, and extending at least partially to the outside of the protective space, the cutting element being used for cutting operations.

2. The cutting assembly according to claim 1, characterized in that, The protective space is multiple, and the multiple protective spaces are arranged circumferentially along the protective component.

3. The cutting assembly according to claim 1, characterized in that, It also includes a blocking member disposed between the cutter head and the protective member, and the blocking member includes a protrusion that protrudes toward the center of the cutter head. The protrusion, the protective member and the cutter head together form the protective space, and the protective space is located on the side of the protrusion near the edge of the cutter head.

4. The cutting assembly according to claim 3, characterized in that, The blocking member further includes a blocking portion, which is disposed along the outer peripheral edge of the protective member or the outer peripheral edge of the cutter head, and the end of the blocking portion is connected to the end of the protrusion.

5. The cutting assembly according to claim 4, characterized in that, The cutting assembly also includes a fixing member that passes sequentially through the cutter head, the cutting member, and the protective member, thereby rotatably positioning the cutting member within the protective space.

6. The cutting assembly according to claim 4, characterized in that, The cutting assembly also includes a fixing member that passes sequentially through the cutter head and the protective member, and is close to the blocking part.

7. The cutting assembly according to claim 5 or 6, characterized in that, The cutting member has a mounting through hole for rotating the cutting member within the protective space. The cutting member also includes a cutting end away from the mounting through hole. The distance from the bottom surface of the protrusion to the mounting through hole is greater than the distance from the cutting end to the mounting through hole. The bottom surface is a surface on the protrusion that is parallel to the axis of the cutter head.

8. The cutting assembly according to claim 7, characterized in that, One of the cutter head and the protective component is provided with a first mounting part adapted to the fixing component; the fixing component is connected to the first mounting part, and the cutting component is sleeved on the fixing component through the mounting through hole.

9. The cutting assembly according to claim 8, characterized in that, The cutter head and the protective component that do not have the first mounting portion have a clearance recess, the clearance recess being aligned with the first mounting portion, the first end of the fixing component being connected to the first mounting portion, and the second end of the fixing component being accommodated in the clearance recess.

10. The cutting assembly according to claim 7, characterized in that, One of the cutter head and the protective component is provided with a first mounting part adapted to the fixing component, and the other has a disassembly through hole. The disassembly through hole is aligned with the first mounting part, and the fixing component passes through the disassembly through hole and connects to the first mounting part.

11. The cutting assembly according to claim 7, characterized in that, One of the cutter head and the protective member has a boss, which extends from the cutter head or the protective member into the protective space along the extension direction of the axis, and the boss matches the mounting through hole; the cutting member is sleeved on the boss through the mounting through hole.

12. The cutting assembly according to any one of claims 1 to 6, characterized in that, The protective member includes an abutting portion in the region near the axial direction of the cutter head; the abutting portion has a through opening along the extension direction of the axial direction, and the through opening is coaxial with the axial direction; the abutting portion abuts against the abutting area on the cutter head.

13. The cutting assembly according to claim 12, characterized in that, The abutting portion is formed by extending from the axial region of the protective member near the cutter head to the side near the cutter head, and the abutting area is adapted to the shape of the abutting portion.

14. The cutting assembly according to any one of claims 1 to 6, characterized in that, The outer diameter of the protective component is less than or equal to the outer diameter of the cutter head.

15. The cutting assembly according to any one of claims 1 to 6, characterized in that, The cutter head is provided with a reinforcing portion, which extends radially along the cutter head and is distributed circumferentially along the cutter head.

16. A lawnmower, characterized in that, include: Lawn mower body; A cutting drive component, wherein the fixed end of the cutting drive component is disposed on the lawnmower body; According to any one of claims 1 to 15, the connecting structure of the cutter head is connected to the output end of the cutting drive, and the cutting drive is capable of driving the cutting assembly to rotate.

17. The lawnmower according to claim 16, characterized in that, The cutter head also includes a positioning structure, and the output end is provided with a positioning part adapted to the positioning structure. The positioning structure and the positioning part are connected to limit the position of the cutter head relative to the output end.

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