Cutting assembly and robot
By designing protective components and a rotating shaft structure in the lawnmower, the problem of safety hazards in lawnmowers is prevented from coming into contact with external objects, thus achieving safe and efficient lawnmowing operations.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN MAMMOTION INNOVATION CO LTD
- Filing Date
- 2025-06-20
- Publication Date
- 2026-06-16
AI Technical Summary
The cutting parts of existing lawnmowers are prone to contact with hard rocks or external objects such as workers during mowing operations, posing a safety hazard.
Design a cutting assembly including a mounting base, a protective element, and a rotating shaft. The cutting element is located inside the cavity of the protective element. The protective element prevents the cutting element from contacting external objects, and multiple inlet and outlet holes enable efficient entry and exit of grass.
It improves the safety of lawnmowers during cutting operations, avoids contact between the cutting parts and external objects, enhances safety, and improves the efficiency of grass entry and exit and cutting efficiency.
Smart Images
Figure CN224356696U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of lawn mowing equipment technology, specifically to a cutting assembly and a robot. Background Technology
[0002] Lawn mowers are widely used for trimming lawns and vegetation. The cutting component of a lawn mower contains a rotating cutting element to perform the mowing operation. However, most cutting elements are currently in an open position. When the lawn mower is in operation, the cutting element inevitably comes into contact with hard rocks, workers, etc., resulting in safety hazards during lawn mowing. Utility Model Content
[0003] In view of the above, it is necessary to provide a cutting component and robot to improve the safety of cutting.
[0004] This application provides a cutting assembly, including:
[0005] Mounting base for mounting on a robot that moves on a working surface;
[0006] The protective component is connected to the mounting base and has a cavity and an inlet hole. The inlet hole connects the inside and outside of the cavity to allow the grass to enter the cavity.
[0007] A rotating shaft is rotatably connected to the mounting base, and the axis of the rotating shaft is parallel to the working surface; and
[0008] A cutting element, connected to the rotating shaft and located within the cavity, is used to rotate around the axis of the rotating shaft under its drive to cut the grass located in the cavity.
[0009] When cutting grass, the grass enters the cavity through the inlet hole. The cutting element rotates around the axis of the rotating shaft, driven by the shaft, to cut the grass within the cavity. The protective component in this cutting assembly prevents the cutting element from contacting external objects, thus improving safety during cutting operations.
[0010] In some embodiments, there are multiple inlet holes, and the protective member also has multiple outlet holes. The multiple outlet holes are respectively connected to the inside and outside of the cavity, and the multiple outlet holes are used to allow the cut grass to flow out of the cavity.
[0011] In some embodiments, the cutting element includes:
[0012] Two first cutting blades are offset along the axial direction of the rotating shaft. Each first cutting blade has a first cutting edge at both ends along the radial direction of the rotating shaft. Each first cutting edge extends along the axial direction of the rotating shaft and has a serrated structure.
[0013] Two second cutting blades are offset along the axial direction of the rotating shaft. One of the second cutting blades is arranged in a radial direction corresponding to one of the first cutting blades on the rotating shaft, and the other second cutting blade is arranged in a radial direction corresponding to the other first cutting blade on the rotating shaft. Each second cutting blade has a second cutting edge at both ends along the radial direction of the rotating shaft. Each second cutting edge extends along the axial direction of the rotating shaft and has a serrated structure.
[0014] In some embodiments, the protective element includes:
[0015] A protective cover is connected to the mounting base, and both the cavity and the inlet hole are formed in the protective cover;
[0016] Multiple combing sections are connected to the protective cover and are spaced apart along the axial direction of the rotating shaft.
[0017] In some embodiments, the cutting element includes:
[0018] Connector, attached to the rotating shaft;
[0019] Multiple cutting blades are rotatably connected to the connector and spaced apart circumferentially along the connector. The rotation axis of each cutting blade is parallel to the rotation axis, and each cutting blade has a rotating blade at its opposite ends.
[0020] In some embodiments, the protective element includes:
[0021] The main body is connected to the mounting base, and both the cavity and the inlet hole are formed in the main body;
[0022] The protective cover is connected to the main body and has a fixed blade and multiple guide holes. The fixed blade and multiple rotating blades cooperate to cut the grass entering the cavity. The multiple guide holes are spaced apart along the axial direction of the rotating shaft and are respectively connected to the inlet hole to guide the grass into the inlet hole.
[0023] In some embodiments, the cutting element is spirally arranged along the axial direction of the rotating shaft, and a spiral blade is provided at the end of the cutting element away from the rotating shaft.
[0024] In some embodiments, the protective element includes:
[0025] A protective cover is connected to the mounting base, and both the cavity and the inlet hole are formed in the protective cover;
[0026] Multiple combing parts are connected to the protective cover and spaced apart along the axial direction of the rotating shaft. The portion of the protective cover that forms the inlet hole is provided with a fixed blade. The spiral blade and the fixed blade cooperate to cut the grass located in the cavity.
[0027] In some embodiments, the protective element further includes:
[0028] Multiple guide bodies are connected to the protective cover. Each guide body is provided with a guide slope, which is inclined from one adjacent fixed blade to another adjacent fixed blade.
[0029] In some embodiments, the protective cover has a cylindrical structure.
[0030] In some embodiments, the mounting base is provided with an air duct, the two ends of which are an air inlet and an air outlet, respectively, and the cutting assembly further includes:
[0031] A venting component, connected to the mounting base and located between the air outlet and the protective component, is used to ventilate the cavity.
[0032] This application also provides a robot, including: the cutting component described in any of the above embodiments.
[0033] When the above-mentioned lawnmower is mowing, the cutting component set in the cavity can avoid contact with external objects, thereby improving the safety of the lawnmower during the cutting operation. Attached Figure Description
[0034] Figure 1 This is a schematic diagram of the cutting assembly provided in an embodiment of this application.
[0035] Figure 2 for Figure 1 The diagram shows the structure of the cutting component from another angle.
[0036] Figure 3 for Figure 1 The diagram shows a partial structural schematic of the cutting component.
[0037] Figure 4 for Figure 2 The diagram shows a cross-sectional view of the cutting assembly along the IV-IV direction.
[0038] Figure 5 This is a schematic diagram of the structure of a cutting assembly provided in another embodiment of this application.
[0039] Figure 6 for Figure 5 The diagram shows a partial structural schematic of the cutting component.
[0040] Figure 7This is a schematic diagram of the structure of a cutting component provided in another embodiment of this application.
[0041] Figure 8 for Figure 7 The diagram shows a partial structural schematic of the cutting component.
[0042] Figure 9 for Figure 7 The diagram shows the structure of the cutting component from another angle.
[0043] Key component symbols: Cutting assembly 100, mounting base 110, air duct 110a, air inlet 110b, air outlet 110c, protective component 120, cavity 120a, inlet hole 120b, outlet hole 120c, protective cover 121, fixed blade 121a, guide hole 121b, comb body 122, fixed blade 122a, main body 123, guide body 124, guide slope 124a, rotating shaft 130, cutting component 140, spiral blade 140a, first cutting blade 141, first cutting edge 1411, second cutting blade 142, second cutting edge 1421, connecting component 143, cutting blade 144, rotating blade 144a, driving component 150, ventilation component 160. Detailed Implementation
[0044] The embodiments of this application are described in detail below. Examples of these embodiments 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.
[0045] 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; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two elements or the interaction between two elements. In the description of this application, it should be noted that "multiple" means two or more, unless otherwise expressly and specifically limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0046] The embodiments of this application will be described in detail below with reference to the accompanying drawings.
[0047] Please see Figure 1 This application provides a cutting component 100 for cutting grass, wherein grass is a general concept and can refer to grass on a lawn or other vegetation to be cut.
[0048] Please see also Figure 2 and Figure 3 In some embodiments, the cutting assembly 100 includes a mounting base 110, a protective member 120, a rotating shaft 130, and a cutting member 140. The mounting base 110 is used to mount a robot, which moves on a working surface to cut grass. Specifically, the protective member 120 is connected to the mounting base 110 and has a cavity 120a and an inlet hole 120b. The inlet hole 120b connects the inside and outside of the cavity 120a to allow grass to enter the cavity 120a. The rotating shaft 130 is rotatably connected to the mounting base 110, and the axis of the rotating shaft 130 is parallel to the working surface. The cutting member 140 is connected to the rotating shaft 130 and located inside the cavity 120a. The cutting member 140 is used to rotate around the axis of the rotating shaft 130 under the drive of the rotating shaft 130 to cut the grass located in the cavity 120a.
[0049] It should be noted that the grass entering the cavity 120a through the inlet hole 120b is the grass to be cut.
[0050] When the cutting assembly 100 cuts grass, the grass enters the cavity 120a through the inlet 120b. The cutting element 140 rotates around the axis of the rotating shaft 130 under the drive of the rotating shaft 130 to cut the grass located in the cavity 120a. In the cutting assembly 100, the protective element 120 prevents the cutting element 140 from contacting external objects, thereby improving the safety of the cutting assembly 100 during cutting operations.
[0051] Please see Figure 1 and Figure 2 In some embodiments, there are multiple inlet holes 120b, and the protective member 120 is also provided with multiple outlet holes 120c. The multiple inlet holes 120b are spaced apart along the axis of the rotating shaft 130, and the multiple outlet holes 120c are spaced apart along the axis of the rotating shaft 130. The multiple outlet holes 120c are respectively connected to the inside and outside of the cavity 120a so that the cut grass can flow out of the cavity 120a.
[0052] Therefore, multiple inlet holes 120b can disperse and guide grass into the protective cavity 120a, and multiple outlet holes 120c can disperse the cut grass, thereby improving the efficiency of grass entering and exiting the cavity 120a.
[0053] Furthermore, the multiple inlet holes 120b are equally spaced along the axis of the rotating shaft 130, which allows the grass entering the protective cavity 120a through the multiple inlet holes 120b to be uniformly cut by the cutting member 140. The multiple outlet holes 120c are equally spaced along the axis of the rotating shaft 130, which allows the cut grass to flow out of the cavity 120a uniformly.
[0054] Please see Figure 3 and Figure 4In some embodiments, the mounting base 110 is provided with an air duct 110a, with an air inlet 110b and an air outlet 110c at its two ends. One end of the rotating component 130 passes through the air outlet 110c and extends into the air duct 110a. The cutting assembly 100 also includes a drive component 150 and a venting component 160. The drive component 150 is connected to the rotating shaft 130 and located within the air duct 110a. The drive component 150 drives the rotating shaft 130 to rotate the cutting component 140. The venting component 160 is connected to the mounting base 110 and located between the air outlet 110c and the protective component 120. The venting component 160 vents air into the cavity 120a so that the cut grass inside the cavity 120a flows out from the outlet 120c. Exemplarily, the drive component 150 can be a rotary motor embedded in the mounting base 110, and the venting component 160 can be a fan.
[0055] Please see Figure 3 and Figure 4 In some embodiments, the cutting element 140 includes two first cutting blades 141 and two second cutting blades 142. The two first cutting blades 141 are offset along the axial direction of the rotating shaft 130. Each first cutting blade 141 has a first cutting edge 1411 at both ends radially along the rotating shaft 130. Each first cutting edge 1411 extends axially along the rotating shaft 130 and has a serrated structure. The two second cutting blades 142 are offset along the axial direction of the rotating shaft 130. One second cutting blade 142 corresponds to one of the first cutting blades 141 radially along the rotating shaft 130, and the other second cutting blade 142 corresponds to the other first cutting blade 141 radially along the rotating shaft 130. Each second cutting blade 142 has a second cutting edge 1421 at both ends radially along the rotating shaft 130. Each second cutting edge 1421 extends axially along the rotating shaft 130 and has a serrated structure.
[0056] Please see Figure 1 and Figure 2 In some embodiments, the protective member 120 includes a protective cover 121 and a plurality of combing parts 122. The protective cover 121 is connected to the mounting base 110. A cavity 120a, an inlet hole 120b, and an outlet hole 120c are all formed in the protective cover 121. The plurality of combing parts 122 are all connected to the protective cover 121 and are spaced apart along the axial direction of the rotating shaft 130. Each inlet hole 120b has an extension body 122 on both sides along the axial direction of the rotating shaft 130. Exemplarily, each combing part 122 is generally conical.
[0057] Therefore, the two adjacent extensions 122 can guide the grass into the inlet hole 120b, which helps to improve the efficiency of cutting grass.
[0058] Furthermore, to improve the stability of the protective cover 121, the protective cover 121 is rotatably connected to the rotating shaft 130.
[0059] Please see Figure 5 and Figure 6 In some embodiments of this invention, the cutting member 140 includes a connector 143 and a plurality of cutting blades 144. The connector 143 is connected to the rotating shaft 130. The plurality of cutting blades 144 are rotatably connected to the connector 143 and are spaced apart along the circumference of the connector 143. The rotation axis of each cutting blade 144 is parallel to the rotating shaft 130, and each cutting blade 144 has a rotating blade 144a at its opposite ends.
[0060] Furthermore, the protective component 120 includes a main body 123 and a protective cover 121. The main body 123 is connected to the mounting base 110. The cavity 120a, the inlet hole 120b, and the outlet hole 120c are all opened in the main body 123. The protective cover 121 is connected to the main body 123 and has a fixed blade 121a and multiple guide holes 121b. The fixed blade 121a and multiple rotating blades 144a are in shearing cooperation to cut the grass entering the cavity 120a. The multiple guide holes 121b are spaced apart along the axial direction of the rotating shaft 130 and are respectively connected to the inlet hole 120b to guide the grass into the inlet hole 120b.
[0061] Therefore, the shearing cooperation between the rotating blade 144a and the fixed blade 121a can reduce the power required for the rotating shaft 130, thereby reducing the power cost of the cutting part 140.
[0062] For example, multiple cutting blades 144 are rotatably connected to the connector 143 and are spaced apart circumferentially along the connector 143. When the rotating shaft 130 rotates, the multiple cutting blades 144 are moved away from the rotating shaft 130 by the centrifugal force generated by the rotation of the rotating shaft 130. Thus, the blades can cut grass as the rotating shaft 130 rotates. When the cutting blades 144 touch non-grass objects with high hardness, the cutting blades 144 will be moved closer to the rotating shaft 130 by the force of the non-grass objects, thereby reducing the collision damage to the non-grass objects.
[0063] Please see Figure 7 , Figure 8 and Figure 9 In some embodiments, the cutting element 140 is spirally arranged along the axial direction of the rotating shaft 130, and a spiral blade 140a is provided at the end of the cutting element 140 away from the rotating shaft 130.
[0064] Furthermore, the protective component 120 includes a protective cover 121 and a plurality of combing parts 122. The protective cover 121 is connected to the mounting base 120. The cavity 120a and the inlet hole 120b are both formed in the protective cover 121. The plurality of combing parts 122 are connected to the protective cover 121 and are spaced apart along the axial direction of the rotating shaft 130. Each inlet hole 120b has an extension body 122 on both sides along the axial direction of the rotating shaft 130. The portion of the protective cover 121 forming the inlet hole 120b is provided with a fixed blade 122a. The spiral blade 140a and the fixed blade 122a are sheared together to cut the grass located in the cavity 120a.
[0065] Therefore, the spiral blade 140a and the extended blade 122a work together to cut grass, and the shaft 130 requires less power, which can reduce the energy consumption cost of the cutting component 140.
[0066] Further, please see Figure 9 In some embodiments, the protective element 120 further includes a plurality of guides 124, each of which is connected to the protective cover 121. Each guide 124 is provided with a guide slope 124a, which is inclined from one adjacent fixed blade 122a to another adjacent fixed blade 122a.
[0067] Therefore, by guiding the inclined plane 124a, the grass can be guided into the space between the spiral blade 140a and the fixed blade 122a, which helps to improve the efficiency of cutting grass.
[0068] Please see Figure 1 and Figure 4 In some embodiments, the protective cover 121 has a cylindrical structure.
[0069] Therefore, the shape of the cavity 120a of the protective cover 120 is adapted to the trajectory formed by the rotation of the cutting component 140, which can reduce the space occupied by the protective cover 121 and facilitate the miniaturization of the cutting assembly 100. In addition, the cylindrical structure of the protective cover can reduce the sharp edges of the outer side of the protective cover 121, thereby reducing collision damage to external objects.
[0070] This application also provides a robot, including any one of the cutting components 100 described in the above embodiments.
[0071] When the lawnmower is cutting grass, the cutting component 140 located in the protective cavity 120a can avoid contact with external objects, thereby improving the safety of the lawnmower during the cutting operation.
[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 assembly, characterized in that, include: Mounting base for mounting on a robot that moves on a working surface; The protective component is connected to the mounting base and has a cavity and an inlet hole. The inlet hole connects the inside and outside of the cavity to allow the grass to enter the cavity. A rotating shaft is rotatably connected to the mounting base, and the axis of the rotating shaft is parallel to the working surface; and A cutting element, connected to the rotating shaft and located within the cavity, is used to rotate around the axis of the rotating shaft under its drive to cut the grass located in the cavity.
2. The cutting assembly as described in claim 1, characterized in that, The inlet hole is multiple, and the protective component also has multiple outlet holes. The multiple outlet holes are respectively connected to the inside and outside of the cavity, and the multiple outlet holes are used to allow the cut grass to flow out of the cavity.
3. The cutting assembly as described in claim 2, characterized in that, The cutting component includes: Two first cutting blades are offset along the axial direction of the rotating shaft. Each first cutting blade has a first cutting edge at both ends along the radial direction of the rotating shaft. Each first cutting edge extends along the axial direction of the rotating shaft and has a serrated structure. Two second cutting blades are offset along the axial direction of the rotating shaft. One of the second cutting blades is arranged in a radial direction corresponding to one of the first cutting blades on the rotating shaft, and the other second cutting blade is arranged in a radial direction corresponding to the other first cutting blade on the rotating shaft. Each second cutting blade has a second cutting edge at both ends along the radial direction of the rotating shaft. Each second cutting edge extends along the axial direction of the rotating shaft and has a serrated structure.
4. The cutting assembly as described in claim 1, characterized in that, The protective component includes: A protective cover is connected to the mounting base, and both the cavity and the inlet hole are formed in the protective cover; Multiple combing sections are connected to the protective cover and are spaced apart along the axial direction of the rotating shaft.
5. The cutting assembly as described in claim 1, characterized in that, The cutting component includes: Connector, attached to the rotating shaft; Multiple cutting blades are rotatably connected to the connector and spaced apart circumferentially along the connector. The rotation axis of each cutting blade is parallel to the rotation axis, and each cutting blade has a rotating blade at its opposite ends.
6. The cutting assembly as described in claim 5, characterized in that, The protective component includes: The main body is connected to the mounting base, and both the cavity and the inlet hole are formed in the main body; The protective cover is connected to the main body and has a fixed blade and multiple guide holes. The fixed blade and multiple rotating blades cooperate to cut the grass entering the cavity. The multiple guide holes are spaced apart along the axial direction of the rotating shaft and are respectively connected to the inlet hole to guide the grass into the inlet hole.
7. The cutting assembly as described in claim 1, characterized in that, The cutting element is spirally arranged along the axis of the rotating shaft, and a spiral blade is provided at the end of the cutting element away from the rotating shaft.
8. The cutting assembly as described in claim 7, characterized in that, The protective component includes: A protective cover is connected to the mounting base, and both the cavity and the inlet hole are formed in the protective cover; Multiple combing parts are connected to the protective cover and spaced apart along the axial direction of the rotating shaft. The portion of the protective cover that forms the inlet hole is provided with a fixed blade. The spiral blade and the fixed blade cooperate to cut the grass located in the cavity.
9. The cutting assembly as described in claim 8, characterized in that, The protective component also includes: Multiple guide bodies are connected to the protective cover. Each guide body is provided with a guide slope, which is inclined from one adjacent fixed blade to another adjacent fixed blade.
10. The cutting assembly as described in claim 4, 6, or 8, characterized in that, The protective cover has a cylindrical structure.
11. The cutting assembly as described in claim 2, characterized in that, The mounting base is provided with an air duct, with an air inlet and an air outlet at each end. The cutting assembly also includes: A venting component, connected to the mounting base and located between the air outlet and the protective component, is used to ventilate the cavity.
12. A robot, characterized in that, include: The cutting component as described in any one of claims 1 to 11.