Cutting mechanism and grass cutting apparatus

Abstract

This application relates to the field of cutting equipment technology, specifically disclosing a cutting mechanism and a lawn mowing device. The cutting mechanism includes a mounting base, a rotating shaft, a spiral blade, and a cutting blade. The rotating shaft is rotatably mounted on the mounting base; the spiral blade is wound around the rotating shaft; the cutting blade is arranged opposite to the spiral blade and is configured to cooperate with the spiral blade to cut the material located between the spiral blade and the cutting blade. When cutting materials such as flowers and grass, the spiral blade rotates under the drive of the rotating shaft and squeezes the material between the cutting blade and the spiral blade. The cutting blade and the spiral blade work together to cut the material, thereby reducing the probability of the material detaching from the spiral blade and the cutting blade, and thus improving the cutting efficiency of the cutting mechanism. In addition, the cutting blade and the spiral blade cut the material by shearing; therefore, the cutting edges of the cutting blade and the spiral blade are not exposed and can be set to be relatively blunt, thereby reducing safety risks.

Description

Technical Field

[0001] This application relates to the field of cutting equipment technology, specifically to a cutting mechanism and a lawn mowing device. Background Technology

[0002] As people's demands for quality of life continue to rise, lawnmowers have become indispensable tools in home and garden maintenance. However, traditional lawnmowers typically use high-speed rotating blades to cut grass and flowers. Because grass and flowers easily wobble and detach from the blades upon contact, cutting efficiency is low. Furthermore, to ensure the blades can cut through the grass, traditional lawnmowers generally have exposed and sharp blades, posing significant safety hazards during use and potentially causing injury to users, children, and small animals. Utility Model Content

[0003] In view of the above, it is necessary to provide a cutting mechanism and mowing equipment to improve cutting efficiency and reduce safety hazards.

[0004] In a first aspect, embodiments of this application provide a cutting mechanism, including a mounting base, a rotating shaft, a spiral blade, and a cutting blade; the rotating shaft is rotatably disposed on the mounting base; the spiral blade is wound around the rotating shaft; the cutting blade is disposed opposite to the spiral blade, and the cutting blade is configured to cooperate with the spiral blade to cut the material located between the spiral blade and the cutting blade.

[0005] The cutting mechanism of this embodiment comprises a mounting base, a rotating shaft, a spiral blade, and a cutting blade. When the cutting mechanism cuts materials such as flowers and grass, the spiral blade rotates under the drive of the rotating shaft, squeezing the material between the cutting blade and the spiral blade. The cutting blade and the spiral blade work together to cut the material. Because the spiral blade squeezes the material during rotation, it reduces the probability of the material deflecting, thereby reducing the probability of the material detaching from the spiral blade and the cutting blade, and thus improving the cutting efficiency of the cutting mechanism. In addition, the cutting blade and the spiral blade cut the material by shearing. Therefore, the cutting edge of the cutting blade and the spiral blade are not exposed and can be made relatively blunt, thereby reducing the probability of injury to users, children, and small animals from contact with the spiral blade and the cutting blade, and thus reducing safety risks.

[0006] Based on the first aspect, in a possible implementation, the spiral blade includes a plurality of teeth connected end to end; the cutting blade is arc-shaped, and the inner side of the cutting blade has a cutting edge extending along the extension direction of the cutting blade; the axis of the rotation shaft passes through the arc center of the cutting blade; the cutting blade and a tooth are arranged opposite to each other along the axial direction of the rotation shaft; the tooth has a cutting edge on the side facing the corresponding cutting blade; the cutting edge extends along the spiral line of the tooth; and the cutting edge cooperates with the cutting edge to cut the material located between the spiral blade and the cutting blade.

[0007] In this implementation, by placing the cutting edge inside the cutting blade and the shaving edge on the side of the blade teeth facing the corresponding cutting blade, neither the cutting edge nor the shaving edge is exposed. This reduces the likelihood of injury to users, children, and small animals from contact with the spiral blade and the cutting blade, thereby reducing safety risks.

[0008] Based on the first aspect, in a possible implementation, the peripheral side of the cutting tooth has an anti-cutting surface that extends along the spiral line of the cutting tooth, and the portion of the anti-cutting surface that connects with the side of the cutting tooth facing the corresponding cutting blade forms the cutting edge.

[0009] In this implementation, by setting an anti-cutting surface, the likelihood of the spiral blade cutting users, children, and small animals is reduced, thereby lowering safety risks. By setting the anti-cutting surface to connect with the side of the cutting blade facing the corresponding cutting edge to form the cutting edge, the thickness of the cutting edge is increased, further reducing the likelihood of cutting edge damage and thus improving the lifespan of the spiral blade.

[0010] Based on the first aspect, the cutting mechanism further includes a protective cover, which is disposed on the mounting base and covers the outside of the spiral blade. The protective cover has an inlet, and the cutting blade is disposed inside the inlet.

[0011] In this implementation, by setting up a protective cover and placing the cutting blade inside the inlet, the likelihood of injury to users, children, and small animals from contact with the spiral blade and cutting blade is reduced, thereby lowering the safety risk.

[0012] Based on the first aspect, in possible implementations, there are multiple inlets and multiple cutting blades, each corresponding to the other. The multiple inlets are spaced apart along the axial direction of the rotation axis. The multiple inlets have the same size, and the distance between any two adjacent inlets is the same. Each cutting blade is located in the corresponding inlet.

[0013] In this implementation, by setting multiple inlets and multiple cutting blades, when the cutting mechanism cuts materials such as flowers and grass, the material enters the protective cover through multiple inlets and comes into contact with the spiral blades. The spiral blades and multiple cutting blades work together to cut the material, thus the cutting mechanism can cut more material in the same amount of time, thereby improving the cutting efficiency. By setting multiple inlets of the same size and the same spacing between every two adjacent inlets, the resistance from the material encountered by the spiral blades and each cutting blade is more evenly distributed, reducing the probability that the spiral blades will fail to effectively cut the material due to excessive resistance encountered when interacting with some cutting blades, thereby improving the cutting effect of the cutting mechanism.

[0014] Based on the first aspect, in a possible implementation, the cutting blade is disposed on the inner wall of one side of the inlet; the cutting mechanism further includes a guide member disposed in the inlet and located on one side of the cutting blade, the guide member having a guiding slope, one end of the guiding slope being connected to the cutting blade, and the other end of the guiding slope being connected to the inner wall of the inlet away from the cutting blade.

[0015] In this implementation, by setting a guide and a guide slope on the guide, when the cutting mechanism cuts the material, the material entering the inlet will be gradually guided by the guide slope to move between the spiral blade and the cutting blade, so that more material is cut, thereby improving the cutting efficiency and cutting effect of the cutting mechanism.

[0016] Based on the first aspect, in a possible implementation, the cutting mechanism further includes a combing member disposed on the protective cover and located on one side of the inlet, the combing member extending in a direction perpendicular to the axial direction of the rotation axis, and the cross-sectional dimension of the combing member gradually decreasing in the direction away from the protective cover.

[0017] In this implementation, by incorporating a combing component, when the cutting mechanism moves and cuts the material, the combing component inserts between the materials and lifts up any fallen material, thereby enabling the spiral blade to cooperate with the cutting blade to cut the fallen material and improving the cutting effect of the cutting mechanism. Furthermore, by setting the cross-sectional dimension of the combing component to gradually decrease along the direction away from the protective cover, it facilitates the rapid insertion of the combing component between the materials.

[0018] Based on the first aspect, in a possible implementation, the combing member has an upper side and a lower side that are arranged opposite to each other, the upper side is a concave arc surface, the lower side is a plane, and the distance between the lower side and the axis of the rotating shaft is greater than or equal to the maximum distance between the side wall of the protective cover near the combing member and the axis of the rotating shaft.

[0019] In this implementation, by setting the lower side of the combing component to a flat plane, and ensuring that the distance between the lower side and the axis of rotation is greater than or equal to the maximum distance between the side wall of the protective cover near the combing component and the axis of rotation, the insertion height of the combing component into the material is reduced, thus facilitating the combing component to lift up the fallen material. By setting the upper side to a concave arc surface, the upper side can gradually guide and support the fallen material, thereby quickly lifting the fallen material and improving the combing effect of the combing component.

[0020] Based on the first aspect, in possible implementations, the protective cover also has an outlet, which is located on the side of the protective cover opposite to the inlet and communicates with the inlet; and / or, the protective cover is cylindrical; and / or, the cutting mechanism further includes a rotary drive member connected to the rotary shaft.

[0021] In this implementation, by setting a discharge port, when the spiral blade and the cutting blade work together to cut the material, the cut portion of the material is discharged outside the protective cover through the discharge port, thereby reducing the chance of blockage inside the protective cover and improving the cutting efficiency of the cutting mechanism. By setting the protective cover to a cylindrical shape, on the one hand, the inner wall of the protective cover is closer to the movement trajectory of the spiral blade, facilitating stable rotation of the spiral blade and reducing the size of the cutting mechanism; on the other hand, the cylindrical shape has no sharp edges, effectively reducing the risk of injury to users, children, and small animals if the protective cover comes into contact with them, thus lowering safety risks. By setting a rotary drive component to provide power to drive the rotating shaft and spiral blade to rotate, the cutting efficiency of the cutting mechanism is further improved.

[0022] Secondly, embodiments of this application provide a lawn mowing device, including the cutting mechanism described above.

[0023] The lawn mowing device of this application improves the cutting efficiency of cutting flowers and grass and reduces safety hazards by setting the above-mentioned cutting mechanism. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the cutting mechanism provided in the embodiments of this application.

[0025] Figure 2 yes Figure 1 A three-dimensional structural diagram of the cutting mechanism from another angle.

[0026] Figure 3 yes Figure 1 The cutting mechanism shown is a cross-sectional schematic diagram along the III-III direction.

[0027] Figure 4 yes Figure 1The diagram shows the three-dimensional structure of the cutting mechanism after removing the protective cover, cutting blade, guide, combing component, and connecting part.

[0028] Figure 5 This is a structural block diagram of the lawn mowing equipment provided in the embodiments of this application.

[0029] Explanation of main component symbols: lawn mowing equipment 1000, cutting mechanism 100, mounting base 10, rotating shaft 20, spiral blade 30, cutting edge 311, anti-cutting surface 312, protective cover 40, inlet 41, outlet 42, cutting blade 51, cutting edge 511, guide 52, guide slope 521, rotating drive 60, combing component 71, upper side 711, lower side 712, left side 713, right side 714, connecting part 72, first bearing 81, second bearing 82, coupling 90, machine body 200, shaft L. Detailed Implementation

[0030] The embodiments of this application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0031] In the description of this application, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, 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. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, it should be noted that "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that allows communication between the two components; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0033] The following will describe some embodiments of this application in detail with reference to the accompanying drawings.

[0034] Please see Figure 1 and Figure 5 This application provides a cutting mechanism 100. The cutting mechanism 100 can be applied to a lawn mowing device 1000, a harvester (not shown), etc. For ease of understanding, this application uses the application of the cutting mechanism 100 to a lawn mowing device 1000 as an example for illustration. Obviously, this is not a limitation of the embodiments of this application.

[0035] Please see Figure 1 , Figure 2 and Figure 3 In this embodiment, the cutting mechanism 100 includes a mounting base 10, a rotating shaft 20, a spiral blade 30, and a cutting blade 51.

[0036] Mounting base 10 is used to connect with the body 200 of lawn mowing equipment 1000 (e.g., ...). Figure 5 (As shown) Connection. The rotating shaft 20 is rotatably mounted on the mounting base 10. The spiral blade 30 is wound around the rotating shaft 20 along its axial direction. The cutting blade 51 is disposed opposite to the spiral blade 30 and is configured to cooperate with the spiral blade 30 to cut the material located between the spiral blade 30 and the cutting blade 51 (not shown).

[0037] Specifically, the material is flowers and plants. When the cutting mechanism 100 cuts the flowers and plants, the spiral blade 30 rotates under the drive of the rotating shaft 20, squeezing the flowers and plants between the cutting blade 51 and the spiral blade 30. The cutting blade 51 and the spiral blade 30 work together to cut the flowers and plants. Because the spiral blade 30 squeezes the flowers and plants when rotating, it reduces the probability of the flowers and plants swaying, thereby reducing the probability of the flowers and plants separating from the spiral blade 30 and the cutting blade 51, and thus improving the cutting efficiency of the cutting mechanism 100. In addition, the cutting blade 51 and the spiral blade 30 cut the flowers and plants by shearing. Therefore, the cutting edges of the cutting blade 51 and the spiral blade 30 are not exposed and can be set to be relatively blunt, thereby reducing the probability of injury to users, children and small animals from contact with the spiral blade 30 and the cutting blade 51, and thus reducing safety risks.

[0038] In this embodiment, the cutting mechanism 100 also includes a protective cover 40, which is disposed on the mounting base 10 and covers the outside of the spiral blade 30. The protective cover 40 has an inlet 41, and the cutting blade 51 is disposed inside the inlet 41.

[0039] By providing a protective cover 40 and placing the cutting blade 51 inside the inlet 41, the likelihood of injury to users, children, and small animals from contact with the spiral blade 30 and the cutting blade 51 is reduced, thereby lowering safety risks.

[0040] In this embodiment, the cutting mechanism 100 further includes a rotary drive 60, which can be a drive motor. The rotary drive 60 is mounted on the mounting base 10 and connected to the rotating shaft 20. By providing power to drive the rotating shaft 20 and the helical blade 30 to rotate using the rotary drive 60, the cutting efficiency of the cutting mechanism 100 is improved.

[0041] In some other embodiments, the rotating shaft 20 may also be driven to rotate by the power unit (not shown) or rotating elements such as wheels (not shown) of the mower 1000 through a transmission mechanism (not shown) such as a belt or drive wheel when the mower 1000 moves. This application does not specifically limit this.

[0042] In this embodiment, the spiral blade 30 includes a plurality of teeth 31 connected end to end. The cutting blade 50 is arc-shaped, and the inner side of the cutting blade 50 has a cutting edge 51 extending along the extension direction of the cutting blade 50. The axis L of the rotating shaft 20 passes through the arc center of the cutting blade 50. The cutting blade 50 and one of the teeth 31 are arranged opposite each other along the axial direction of the rotating shaft 20. The side of the tooth 31 facing the corresponding cutting blade 50 has a cutting edge 311. The cutting edge 311 extends along the spiral line of the tooth 31. The cutting edge 311 cooperates with the cutting edge 51 to cut the material located between the spiral blade 30 and the cutting blade 50.

[0043] By placing the cutting edge 51 inside the cutting blade 50 and the cutting edge 311 on the side of the cutting tooth 31 facing the corresponding cutting blade 50, neither the cutting edge 51 nor the cutting edge 311 is exposed, thereby reducing the probability of injury to users, children and small animals from contact with the spiral blade 30 and the cutting blade 51, and thus reducing safety risks.

[0044] In this embodiment, the periphery of the cutting tooth 31 has an anti-cutting surface 312, which extends along the spiral line of the cutting tooth 31. The portion of the anti-cutting surface 312 that connects with the side of the cutting tooth 31 facing the corresponding cutting blade 50 forms a cutting edge 311.

[0045] By incorporating the anti-cutting surface 312, the likelihood of the spiral blade 30 cutting users, children, and small animals is reduced, thereby lowering safety risks. Furthermore, by creating a cutting edge 311 formed by the connection between the anti-cutting surface 312 and the side of the cutting tooth 31 facing the corresponding cutting blade 50, the thickness of the cutting edge 311 is increased, further reducing the likelihood of damage to the cutting edge 311 and thus improving the service life of the spiral blade 30.

[0046] In this embodiment, there are multiple inlets 41 and multiple cutting blades 51, each corresponding to the other. The multiple inlets 41 are spaced apart along the axial direction of the rotation axis 20, and each cutting blade 51 is located in the corresponding inlet 41.

[0047] By setting multiple inlets 41 and multiple cutting blades 51, when the cutting mechanism 100 cuts flowers and plants, the flowers and plants enter the protective cover 40 through the multiple inlets 41 and come into contact with the spiral blades 30. The spiral blades 30 and the multiple cutting blades 51 work together to cut the flowers and plants, so the cutting mechanism 100 can cut more flowers and plants in the same amount of time, thereby improving the cutting efficiency of the cutting mechanism 100.

[0048] In this embodiment, the multiple inlets 41 are of the same size, and the spacing between any two adjacent inlets 41 is the same. This makes the resistance from the flowers and plants more even when the spiral blade 30 engages with each cutting blade 51, reducing the likelihood that the spiral blade 30 will fail to effectively cut the flowers and plants due to excessive resistance from some cutting blades 51, thereby improving the cutting effect of the cutting mechanism 100.

[0049] In this embodiment, multiple cutting blades 51 correspond one-to-one with multiple cutting teeth 31. Each cutting tooth 31 has a cutting edge 311 and an anti-cutting surface 312, thereby improving cutting efficiency and reducing safety risks.

[0050] In this embodiment, the protective cover 40 is cylindrical. By making the protective cover 40 cylindrical, on the one hand, the inner wall of the protective cover 40 is closer to the movement trajectory of the spiral blade 30, which facilitates the stable rotation of the spiral blade 30 and helps to reduce the size of the cutting mechanism 100. On the other hand, the cylindrical shape has no sharp edges, which can effectively reduce the harm to users, children and small animals when the protective cover 40 comes into contact with them, thereby reducing safety risks.

[0051] In this embodiment, the protective cover 40 is also provided with an outlet 42, which is located on the side of the protective cover 40 opposite to the inlet 41 and communicates with the inlet 41. By providing the outlet 42, when the spiral blade 30 cooperates with the cutting blade 51 to cut the flowers and plants, the cut part of the flowers and plants is discharged outside the protective cover 40 through the outlet 42, thereby reducing the probability of blockage inside the protective cover 40 and improving the cutting efficiency of the cutting mechanism 100.

[0052] In this embodiment, there are multiple outlets 42, each corresponding to one of the multiple inlets 41. Each outlet 42 is located on the side of the protective cover 40 away from the corresponding inlet 41 and is connected to the corresponding inlet 41. This further reduces the probability of blockage inside the protective cover 40.

[0053] Please refer to it again. Figure 1 , Figure 2 and Figure 3In this embodiment, the cutting blade 51 is disposed on the inner wall of the inlet 41 on one side of the rotating shaft 20. The cutting mechanism 100 also includes a guide 52, which is disposed in the inlet 41 and located on one side of the cutting blade 51. The guide 52 has a guide slope 521, one end of which is connected to the cutting blade 51, and the other end of which is connected to the inner wall of the inlet 41 away from the cutting blade 51.

[0054] By setting a guide 52 and a guide slope 521 on the guide 52, when the cutting mechanism 100 cuts flowers and plants, the flowers and plants entering the inlet 41 will be gradually guided by the guide slope 521 to move between the spiral blade 30 and the cutting blade 51, so that more flowers and plants are cut, thereby improving the cutting efficiency and cutting effect of the cutting mechanism 100.

[0055] In this embodiment, there are multiple guide members 52, each guide member 52 is disposed in the corresponding inlet 41 and located on one side of the corresponding cutting blade 51.

[0056] In this embodiment, multiple guides 52 and multiple cutting blades 51 are integrated into a single structure and mounted on the protective cover 40, thereby improving the ease of installing the guides 52 and cutting blades 51 and facilitating accurate correspondence between each guide 52 and its corresponding cutting blade 51.

[0057] In some other embodiments, the guide 52 and the cutter 51 may also be separate structures, with the guide 52 and the cutter 51 respectively mounted on the protective cover 40. This application embodiment does not specifically limit this.

[0058] Please refer to it again. Figure 1 , Figure 2 and Figure 3 In this embodiment, the cutting mechanism 100 further includes a combing member 71, which is disposed on the protective cover 40 and located on one side of the inlet 41. The extending direction of the combing member 71 is perpendicular to the axial direction of the rotating shaft 20. The cross-sectional dimension of the combing member 71 gradually decreases along the direction away from the protective cover 40.

[0059] By incorporating the combing component 71, when the cutting mechanism 100 moves and cuts the flowers and plants, the combing component 71 inserts between the flowers and plants and lifts up any fallen flowers and plants, thereby enabling the spiral blade 30 and the cutting blade 51 to work together to cut the fallen flowers and plants, thus improving the cutting effect of the cutting mechanism 100. Furthermore, by setting the cross-sectional dimension of the combing component 71 to gradually decrease along the direction away from the protective cover 40, it is easier for the combing component 71 to quickly insert between the flowers and plants.

[0060] In this embodiment, the combing member 71 has an upper side surface 711 and a lower side surface 712 that are arranged opposite to each other. The upper side surface 711 is a concave arc surface, and the lower side surface 712 is a plane. The distance between the lower side surface 712 and the axis L of the rotating shaft 20 is greater than or equal to the maximum distance between the side wall of the protective cover 40 near the combing member 71 and the axis L of the rotating shaft 20.

[0061] By setting the lower side 712 of the combing component 71 to be a plane, and ensuring that the distance between the lower side 712 and the axis L of the rotating shaft 20 is greater than or equal to the maximum distance between the side wall of the protective cover 40 near the combing component 71 and the axis L of the rotating shaft 20, the insertion height of the combing component 71 between the flowers and plants is reduced, thus facilitating the combing component 71 to upright the fallen flowers and plants. Furthermore, this design reduces the likelihood of the protective cover 40 being deformed or damaged due to collision with hard objects such as stones on the ground. By setting the upper side 711 to be a concave arc surface, the upper side 711 can gradually guide and support the fallen flowers and plants, thereby quickly uprighting them and improving the combing effect of the combing component 71.

[0062] In this embodiment, the combing member 71 also has a left side 713 and a right side 714 that are arranged opposite to each other, both of which are concave arc shapes. This facilitates the combing member 71 in quickly guiding the flowers and plants into the inlet 41.

[0063] In this embodiment, multiple combing elements 71 are arranged at intervals along the axial direction of the rotation axis 20, and each inlet 41 is located between two adjacent combing elements 71. This further improves the cutting efficiency and cutting effect of the cutting mechanism 100.

[0064] In this embodiment, the cutting mechanism 100 further includes a connecting portion 72. Multiple combing components 71 are connected through the connecting portion 72 and are integrated with the connecting portion 72. The multiple combing components 71 and the connecting portion 72 are combined and installed on the protective cover 40. This improves the convenience and accuracy of installing multiple combing components 71.

[0065] In some other embodiments, multiple combing components 71 may also be mounted on the protective cover 40, and this application embodiment does not specifically limit this.

[0066] Please see Figure 3 and Figure 4In this embodiment, the cutting mechanism 100 further includes a first bearing 81 and a second bearing 82. The first bearing 81 and the second bearing 82 are respectively sleeved on both ends of the rotating shaft 20. The first bearing 81 is connected to the mounting base 10, and the end of the rotating shaft 20 near the mounting base 10 is rotatably connected to the mounting base 10 via the first bearing 81. The second bearing 82 is connected to the end of the protective cover 40 away from the mounting base 10, and the end of the rotating shaft 20 away from the mounting base 10 is rotatably connected to the protective cover 40 via the second bearing 82. By setting the first bearing 81 and the second bearing 82, the stability and accuracy of the rotating shaft 20 driving the spiral blade 30 to rotate are improved.

[0067] Please refer to it again. Figure 3 and Figure 4 In this embodiment, the cutting mechanism 100 also includes a coupling 90, and the rotary drive 60 is connected to the rotary shaft 20 through the coupling 90, thereby improving the convenience of connecting the rotary drive 60 and the rotary shaft 20.

[0068] In summary, the cutting mechanism 100 of this application embodiment, by providing a mounting base 10, a rotating shaft 20, a spiral blade 30, and a cutting blade 51, allows the spiral blade 30 to rotate under the drive of the rotating shaft 20 when cutting materials such as flowers and grass. This rotation compresses the material between the cutting blade 51 and the spiral blade 30, and the cutting blade 51 and the spiral blade 30 work together to cut the material. Because the spiral blade 30 compresses the material during rotation, it reduces the probability of material swaying, thereby reducing the probability of the material detaching from the spiral blade 30 and the cutting blade 51, thus improving the cutting efficiency of the cutting mechanism 100. Furthermore, since the cutting blade 51 and the spiral blade 30 cut the flowers and grass by shearing, the cutting edges of the cutting blade 51 and the spiral blade 30 are not exposed and can be made relatively blunt, thereby reducing the probability of injury to users, children, and small animals from contact with the spiral blade 30 and the cutting blade 51, and thus reducing safety risks. Furthermore, by providing a protective cover 40, the likelihood of injury to users, children, and small animals from contact with the spiral blade 30 and the cutting blade 51 is reduced, thereby lowering safety risks; by providing a guide 52 and a comb 71, the cutting efficiency and cutting effect of the cutting mechanism 100 are improved.

[0069] Please refer to the following: Figure 5 This application also provides a lawn mowing device 1000, which includes the cutting mechanism 100 as described above.

[0070] The lawn mowing device 1000 of this application improves the cutting efficiency of cutting flowers and grass and reduces safety hazards by setting the above-mentioned cutting mechanism 100.

[0071] In this embodiment, the lawn mowing device 1000 also includes a body 200, which can be a wheeled robot. The cutting mechanism 100 is mounted on the body 200 and moves under the drive of the body 200. In this way, the lawn mowing device 1000 can automatically perform garden maintenance according to operating instructions, thereby improving the convenience of garden maintenance.

[0072] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be embraced within this application.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. A cutting mechanism, characterized in that, include: Mounting base; A rotating shaft is rotatably mounted on the mounting base; A spiral blade is wound around the rotating axis; and A cutting blade is disposed opposite to the helical blade, the cutting blade being configured to cooperate with the helical blade to cut the material located between the helical blade and the cutting blade.

2. The cutting mechanism of claim 1, wherein, The spiral blade includes a plurality of teeth connected end to end; the cutting blade is arc-shaped, and the inner side of the cutting blade has a cutting edge extending along the extension direction of the cutting blade. The axis of the rotation shaft passes through the center of the arc of the cutting blade. The cutting blade and a tooth are arranged opposite each other along the axial direction of the rotation shaft. The tooth has a cutting edge on the side facing the corresponding cutting blade. The cutting edge extends along the spiral line of the tooth. The cutting edge cooperates with the cutting edge to cut the material located between the spiral blade and the cutting blade.

3. The cutting mechanism of claim 2, wherein, The circumference of the cutting tooth has an anti-cutting surface, which extends along the spiral line of the cutting tooth. The portion of the anti-cutting surface that connects with the side of the cutting tooth facing the corresponding cutting blade forms the cutting edge.

4. The cutting mechanism of claim 1, wherein, The cutting mechanism also includes a protective cover, which is located on the mounting base and covers the outside of the spiral blade. The protective cover has an inlet, and the cutting blade is located inside the inlet.

5. The cutting mechanism of claim 4, wherein, There are multiple inlets and multiple cutting blades, each corresponding to one another. The multiple inlets are spaced apart along the axial direction of the rotation axis. The multiple inlets are the same size, and the distance between any two adjacent inlets is the same. Each cutting blade is located in the corresponding inlet.

6. The cutting mechanism of claim 4, wherein, The cutting blade is disposed on the inner wall of one side of the inlet; the cutting mechanism further includes a guide member disposed in the inlet and located on one side of the cutting blade, the guide member having a guiding slope, one end of the guiding slope being connected to the cutting blade, and the other end of the guiding slope being connected to the inner wall of the inlet away from the cutting blade.

7. The cutting mechanism of claim 4, wherein, The cutting mechanism further includes a combing element disposed on the protective cover and located on one side of the inlet. The combing element extends perpendicular to the axial direction of the rotating shaft, and the cross-sectional dimension of the combing element gradually decreases along the direction away from the protective cover.

8. The cutting mechanism of claim 7, wherein, The combing component has an upper side and a lower side that are arranged opposite to each other. The upper side is a concave arc surface, and the lower side is a plane. The distance between the lower side and the axis of the rotating shaft is greater than or equal to the maximum distance between the side wall of the protective cover near the combing component and the axis of the rotating shaft.

9. The cutting mechanism of claim 4, wherein, The protective cover also has a drain outlet, which is located on the side of the protective cover opposite to the inlet and communicates with the inlet; and / or, The protective cover is cylindrical; and / or, The cutting mechanism further includes a rotary drive component, which is connected to the rotary shaft.

10. A grass cutting apparatus characterised in that, Includes the cutting mechanism as described in any one of claims 1 to 9.

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