Protective assembly, cutting device and intelligent mower

Abstract

The utility model relates to the technical field of mowers, in particular to a protection assembly, a cutting device and an intelligent mower, and the protection assembly comprises a side protection part and a bottom protection part. The cutterhead is arranged in the containing space of the side protection piece, and the side portion of the cutterhead is protected. The first opening in the bottom end of the containing space can allow grass to pass through so as to be cut by the cutterhead, and at least part of the first opening is sealed through the bottom protection piece so as to protect the bottom of the cutterhead. And the bottom protection piece is provided with a second opening capable of exposing at least part of the outer edge of the cutter head, so that an operator can see the outer edge of the cutter head under the condition that the cutting area of the cutter head is as large as possible, the hands of the operator can extend into the cutter head from the second opening and avoid the outer edge of the cutter head during disassembly, and safety accidents such as cutting injury are further avoided. The upper portion of the bottom protection piece is not blocked by the cutter head, the hand of a user can move above at least part of the bottom protection piece more flexibly, and the operator has a more appropriate grabbing angle so as to flexibly disassemble the bottom protection piece.

Description

Technical Field

[0001] The present disclosure relates to the technical field of lawn mowers, and in particular to a protective component, a cutting device, and an intelligent lawn mower. Background Art

[0002] Smart lawn mowers are widely used for automated pruning and maintenance of urban lawns and home garden lawns. With the continued advancement of urbanization and the continuous improvement of residents' living standards, lawn maintenance and management, as a core component of urban ecological greening and home environmental beautification, are receiving increasing attention. In the modern lawn maintenance system, smart lawn mowers are key equipment, and their performance and operating efficiency are directly related to the lawn landscape effect and maintenance cost control. Current mainstream smart lawn mowers are usually equipped with single or multiple rotating cutter discs equipped with sharp blades, which achieve lawn cutting through high-speed rotation.

[0003] While the current cutting mechanism guard design of smart lawn mowers can isolate and protect the blade, it exposes two key pain points in actual use. First, the semi-open space enclosed by the bottom and side guards of the guard allows airflow to easily draw in debris such as mud, sand, and grass clippings during operation, creating blind spots. The long-term accumulation of such debris not only affects the stability of the machine but can also cause the blade to jam or drive system failure.

[0004] Taking the cutting device disclosed in Chinese patent CN113366964A as an example, the integrated protective structure it adopts has significant defects: when the user needs to clean the dirty space, he can only choose to disassemble it or reach in with his hands or cleaning tools to clean it. When cleaning directly, because the bottom of the protective structure overlaps with the blade disc in the vertical direction, the user reaches in with his hands through the narrow gap to wipe and clean it, which poses a great safety risk. The sharp grass clippings remaining in the protective space or the blade disc parts that have not completely stopped rotating can easily cause hand cuts. The disassembly of the protective structure not only requires the use of professional tools and involves the disassembly and assembly of multiple parts, the operation is highly complex and time-consuming and labor-intensive. When taking the protective structure, it is also easy to put your hand between the bottom of the protective structure and the blade disc, which also faces the risk of hand injury.

[0005] The problem with existing technologies is that while the protective structure provides effective protection, it fails to meet the requirements for quick cleaning and does not provide a safe, contactless cleaning path. This forces users to compromise between operational convenience and safety during equipment maintenance, hindering the user experience of smart lawn mowers.

[0006] In response to the above problems, there is an urgent need for an intelligent lawn mower that can not only realize the protective function of the protective structure and protect the cutter disc, but also take into account its cleaning convenience and improve the user experience of the intelligent lawn mower. Utility Model Content

[0007] The purpose of the present application is to provide a protective component, a cutting device and an intelligent lawn mower, which can safely disassemble the protective component and clean dirt while effectively protecting the cutting device.

[0008] According to one aspect of the present application, a guard assembly is provided for a cutting device of an intelligent lawn mower, the cutting device including a blade disc, the guard assembly including: side guards and a bottom guard, the side guards forming a accommodating space for the blade disc to rotate and a first opening connected to the accommodating space, the first opening being located at the bottom end of the side guard; the bottom guard is detachably arranged at the bottom end of the side guard, and at least part of the bottom guard at least partially covers the first opening, and is formed with a second opening capable of exposing at least part of the outer edge of the blade disc, the second opening being connected to the accommodating space; a clamping member, the clamping member including an abutting portion and a triggering portion; wherein the abutting portion is fixedly arranged on the side guard, the bottom guard is correspondingly provided with a through hole, the abutting portion abuts against the inner wall of the through hole to achieve clamping, and / or the abutting portion is fixedly arranged on the bottom guard, the side guard is correspondingly provided with a through hole, the abutting portion abuts against the inner wall of the through hole to achieve clamping.

[0009] In this embodiment, the detachable connection between the side guards and the bottom guard allows the bottom guard to be separated from the side guards when cleaning the cutting mechanism of the smart lawn mower, thoroughly removing any debris such as grass clippings and dirt trapped in the gap between the two. Compared to traditional integrated guard structures, which struggle to reach deep into the gap, this design improves cleaning efficiency, effectively avoids mechanical failures caused by incomplete cleaning, and extends the life of the cutting mechanism.

[0010] The cutter disc is positioned within the accommodation space of the side guards to protect the sides of the cutter disc. Furthermore, a first opening at the bottom of the accommodation space allows grass to pass through for cutting by the cutter disc, and the bottom guard covers at least a portion of the first opening to protect the bottom of the cutter disc. Furthermore, a second opening is provided in the bottom guard to expose at least a portion of the outer edge of the cutter disc, allowing the operator to see the outer edge of the cutter disc while maximizing the cutting area. During removal, the operator's hand can reach through the second opening and avoid the outer edge of the cutter disc, thereby preventing safety accidents such as cuts. Furthermore, since there is no cutter disc blocking at least a portion of the bottom guard, the operator's hand can more flexibly move above at least a portion of the bottom guard, allowing the operator to obtain a more suitable gripping angle for flexible removal of the bottom guard. This design fully considers the safety and convenience of user operation, making the lawn mower safer and more reliable to use.

[0011] The three-dimensional side and bottom protection system effectively blocks grass clippings and foreign matter flying during mowing, protecting the surrounding environment and personnel. The bottom guard not only protects the underside of the cutterhead, but also ensures safe removal and easy cleaning. It provides a protective structure and a safe, non-contact cleaning path for cleaning blind spots, effectively improving the user experience.

[0012] In some exemplary embodiments of the present application, the entire outer edge of the impeller disc is exposed through the second opening.

[0013] In this embodiment, the entire outer edge of the cutterhead is exposed, maximizing the cutting area without being obstructed by the bottom guard, thereby improving cutting efficiency. Furthermore, when removing the bottom guard, the operator can see the entire outer edge of the cutterhead, further preventing injuries and other safety hazards, thereby increasing safety. Furthermore, without the cutterhead obstructing the top of the bottom guard, the operator can more flexibly maneuver above it, allowing the operator to obtain a more suitable grip angle and flexibly remove the bottom guard.

[0014] In addition, the entire outer edge of the blade disc is separated from the bottom guard. When the user removes the bottom guard, his hand can be inserted into the second opening from any position. With this arrangement, the user's grasping angle is not restricted, disassembly is more convenient, and the safety factor is high.

[0015] In some exemplary embodiments of the present application, the side guard is constructed with a first plate-shaped guarding portion, and the bottom guard is constructed with a first connecting portion and a second guarding portion, both of which are plate-shaped. The first guarding portion and the first connecting portion are detachably connected, the second guarding portion is arranged at an angle to the first guarding portion, and the second guarding portion is parallel to the horizontal plane.

[0016] In this type of embodiment, the first protective portion of the side guard and the first connecting portion of the bottom guard both adopt a plate-shaped design and are detachably connected. The plate-shaped structure increases the contact area between the two, making the connection more stable and ensuring the protective effect.

[0017] The second guard is angled relative to the first and parallel to the horizontal plane, creating an inclined chip removal space. Grass clippings, dirt, and other debris generated during mowing quickly slide down the slope under the combined force of gravity and the inclined surface, preventing them from accumulating inside the guard assembly. This ensures efficient chip removal while maintaining the guard assembly's all-around protection of the cutterhead, preventing debris accumulation from affecting performance or causing mechanical failure.

[0018] In some exemplary embodiments of the present application, the clamping member is fixed to the first connecting portion, the through hole is provided on the first protective portion, and the abutting portion abuts against the inner wall of the through hole to achieve clamping.

[0019] In this embodiment, the guard assembly incorporates a snap-fit ​​structure that connects the clips to the through-holes. Users can quickly remove and assemble the bottom and side guards with a simple press or snap action, without the need for additional tools. Compared to traditional connection methods, this shortens assembly and removal time, improves maintenance efficiency, and facilitates cleaning, increasing the frequency of cleaning and extending the lifespan of the smart lawn mower.

[0020] The quick-install and dismantle features of the snap-on connector simplify maintenance of the protective assembly, reducing the risk of component damage caused by complex disassembly and assembly procedures. The snap-on operation is simple and intuitive, making it easy for even first-time users or those without specialized knowledge to master the disassembly and assembly process. Furthermore, this tool-free design ensures convenient and reliable disassembly and assembly, further enhancing product safety and user experience.

[0021] In some exemplary embodiments of the present application, the clamping member includes an abutting portion and a triggering portion, the through hole is a through hole, and the abutting portion abuts against the inner wall of the through hole to achieve clamping.

[0022] In this embodiment, the engaging member securely engages the inner wall of the through-hole through the abutment portion. For disassembly, simply operating the trigger portion instantly releases the abutment, enabling rapid separation of the bottom guard. The tight contact between the abutment portion and the inner wall of the through-hole ensures precise positioning and reliable fixation of the bottom guard. This precise positioning design also avoids blind spots caused by installation deviations, ensuring comprehensive safety during mowing operations. This structural arrangement reduces the use of complex components, reduces the risk of failure due to excessive parts, and facilitates cost control.

[0023] In some exemplary embodiments of the present application, the clamping member is an elastic clamping member, the abutting portion extends into the through hole and abuts against the inner wall thereof, and the triggering portion is located at an end of the through hole away from the cutter disc.

[0024] In this embodiment, the trigger is located at the end of the through-hole away from the blade disc. During disassembly, the user's hand remains outside the engaging portion, completely out of the danger zone of the blade disc. Compared to designs where the trigger is closer to the blade disc, this structure completely eliminates the safety hazard of accidentally touching the blade disc during disassembly, providing a more reliable safety guarantee for the user.

[0025] The elastic clip's properties allow the abutment portion to adaptively deform according to the shape and size of the inner wall once inserted into the through-hole, tightly fitting the inner wall and forming a secure engagement. Even after extended use or minor wear, the elastic clip maintains its secure engagement, ensuring the bottom guard remains secure and reliable throughout the mower's operation, effectively preventing guard failure due to loosening.

[0026] During installation, the automatic reset setting of the elastic clip allows the trigger part and the abutment part to produce elastic deformation, which is convenient for passing through the through hole to achieve installation. After passing through the through hole, the elastic deformation is restored to achieve snap connection. The whole process is smooth and easy, which improves the installation and disassembly experience of the protective component, reduces the difficulty of operation, and makes maintenance work more efficient and easier.

[0027] In some exemplary embodiments of the present application, the first connecting portion is in the form of an elongated plate, and along the length direction of the first connecting portion, there are at least two groups of clips and through holes.

[0028] In this embodiment, the provision of multiple sets of snap-fit ​​structures increases the number of connection points between the bottom guard and the side guard. These multiple snap-fit ​​points cooperate and constrain each other, effectively dissipating vibrations and external forces generated during operation, enhancing overall connection strength. This ensures the guard assembly remains secure and prevents detachment, even during prolonged, high-frequency use or complex operating environments, significantly extending its service life.

[0029] The even distribution of multiple sets of clips ensures more balanced force when connecting the bottom guard to the side guards. This prevents deformation or even damage to the guard structure or connection points caused by excessive force at a single point. Whether facing the impact of grass clippings during mowing or the bumps and vibrations during movement, the guard components can maintain their shape and continuously and stably provide protection, ensuring the normal operation of the cutting device.

[0030] Multiple snap-in locations provide multiple safeguards for the guard assembly's connection. Even if one set of snap-in connections wears out or malfunctions, the remaining snap-in locations will maintain effective connection between the bottom guard and the side guards, preventing accidental detachment. This minimizes safety risks, ensures safe and reliable mowing operations, and provides users with a more secure experience.

[0031] In some exemplary embodiments of the present application, the clip is integrally formed on the first connecting portion.

[0032] In this type of embodiment, the clip is integrally formed with the first connecting portion, eliminating the need for a separate assembly process between the clip and the first connecting portion, effectively reducing the number of parts and assembly steps. This makes the production and assembly process of the protective component more streamlined and efficient, significantly shortening the production cycle, reducing manual assembly costs and the probability of error, facilitating large-scale standardized production, and improving enterprise production efficiency.

[0033] The one-piece structure eliminates the inherent strength issues inherent in traditional assembly methods, such as gaps in joints and welds. The entire structure forms a cohesive, integrated structure that more evenly distributes stress when subjected to external forces such as vibration and impact during operation. This significantly improves structural strength and fatigue resistance, reduces the need for replacement of protective components due to structural damage, and further extends the product's lifespan.

[0034] The integrated structure also reduces the number of connection points between components, lowering the risk of failure due to loose or falling components or worn connections. During use, users no longer need to frequently check and maintain the connection between the clip and the first connection, reducing maintenance workload and costs.

[0035] In some exemplary embodiments of the present application, the clip is fixed to the first protective part, the through hole is provided on the first connecting part, the clip is clipped to the through hole, the clip is an elastic clip, the abutting part extends into the through hole and abuts against its inner wall, and the trigger part is located at the end of the through hole away from the blade disc, the first connecting part is a long strip plate, and along the length direction of the first connecting part, there are at least two groups of clips and through holes, and the clip is integrally formed on the first protective part.

[0036] In this embodiment, the guard assembly incorporates a snap-fit ​​mechanism that connects the clips to the through-holes. This allows the user to quickly remove and assemble the bottom and side guards with a simple press or snap action, without the need for additional tools. The clips are secured to the first guard portion and engage with the through-holes in the first connecting portion, positioning the first connecting portion on the side of the first guard portion away from the cutterhead. When removing and assembling the bottom guard, the user always removes the guard away from the cutterhead, completely avoiding the danger zone where the cutterhead is located.

[0037] The quick-install and dismantle feature of the clip-on connector simplifies maintenance of the guard assembly and reduces the risk of component damage caused by complex disassembly and assembly procedures. The simple and intuitive clip-on operation makes it easy for even first-time users or those without specialized knowledge to master the disassembly and assembly method. Furthermore, this tool-free design provides convenient and reliable disassembly and assembly, further enhancing product safety and user experience. This clip-on connection also maximizes user contact with the cutterhead when the bottom guard is installed.

[0038] In some exemplary embodiments of the present application, the clamping member is an elastic clamping member, including an abutting portion and a triggering portion, the through hole is a through hole, the abutting portion extends into the through hole and abuts against the inner wall thereof, and the triggering portion is located at the end of the through hole away from the blade disc, the first connecting portion is a long strip-shaped plate, and along the length direction of the first connecting portion, there are at least two groups of clamping members and through holes, and the clamping member is integrally formed in the first protective portion.

[0039] In this embodiment, the elastic clip's characteristics enable the abutment portion to adaptively deform according to the shape and size of the through-hole's inner wall after entering the through-hole, closely adhering to the inner wall and forming a secure engagement. Even after prolonged use or minor wear, the elastic clip maintains a secure engagement, ensuring the bottom guard remains secure and reliable during operation, effectively preventing guard failure due to loosening.

[0040] During installation, the automatic reset setting of the elastic clip allows the trigger part and the abutment part to produce elastic deformation, which is convenient for passing through the through hole to achieve installation. After passing through the through hole, the elastic deformation is restored to achieve snap connection. The whole process is smooth and easy, which improves the installation and disassembly experience of the protective component, reduces the difficulty of operation, and makes maintenance work more efficient and easier.

[0041] Multiple snap-fit ​​structures increase the number of connection points between the bottom and side guards. These multiple points work together to effectively disperse vibration and external forces generated during operation, enhancing overall connection strength. This ensures the guard assembly remains secure and prevents detachment, even during extended, high-frequency use or complex operating environments, significantly extending its lifespan.

[0042] The even distribution of multiple sets of clips ensures more balanced force when connecting the bottom guard to the side guards. This prevents deformation or even damage to the guard structure or connection points caused by excessive force at a single point. Whether facing the impact of grass clippings during mowing or the bumps and vibrations during movement, the guard components can maintain their shape and continuously and stably provide protection, ensuring the normal operation of the cutting device.

[0043] Multiple snap-in locations provide multiple safeguards for the guard assembly's connection. Even if one set of snap-in connections wears out or malfunctions, the remaining snap-in locations will maintain effective connection between the bottom guard and the side guards, preventing accidental detachment. This minimizes safety risks, ensures safe and reliable mowing operations, and provides users with a more secure experience.

[0044] The clip is integrally formed with the first connecting portion, eliminating the need for a separate assembly process between the clip and the first connecting portion, effectively reducing the number of parts and assembly steps. This makes the production and assembly of the protective component more streamlined and efficient, significantly shortening the production cycle, reducing manual assembly costs and the probability of error, facilitating large-scale standardized production, and improving enterprise production efficiency.

[0045] The one-piece structure eliminates the inherent strength issues inherent in traditional assembly methods, such as gaps in joints and welds. The entire structure forms a cohesive, integrated structure that more evenly distributes stress when subjected to external forces such as vibration and impact during operation. This significantly improves structural strength and fatigue resistance, reduces the need for replacement of protective components due to structural damage, and further extends the product's lifespan.

[0046] The integrated structure also reduces the number of connection points between components, lowering the risk of failure due to loose or falling components or worn connections. During use, users no longer need to frequently check and maintain the connection between the clip and the first connection, reducing maintenance workload and costs.

[0047] In some exemplary embodiments of the present application, on a horizontal projection plane, a minimum distance between the second protective portion and the cutter disc is L1, where L1≥0.

[0048] In this type of embodiment, the minimum horizontal distance between the second guard and the cutter disc ensures effective protection beneath the cutter disc, preventing the risk of splashing foreign objects or accidental contact, while eliminating the need for a complex grass inlet structure. This design allows grass clippings to flow naturally and smoothly into the cutting area while the mower is operating, ensuring cutting efficiency while simplifying the overall structure of the guard assembly, achieving a high degree of integration between safety protection and mowing functionality.

[0049] The horizontal width of the second guard limits its contact area with dirt, such as grass clippings and mud, significantly reducing dirt accumulation. This design, combined with the quick-release mechanism, makes cleaning much easier and faster. Users no longer need to spend extensive time and effort cleaning dirt deep within the slot; a simple wipe is all that's needed, significantly improving the user experience and reducing both maintenance costs and time.

[0050] In some exemplary embodiments of the present application, on the vertical projection plane, the minimum distance between the side of the second protective portion away from the ground and the cutter disc in the vertical direction is L2, 5cm≤L2≤20cm.

[0051] In this embodiment, by limiting the minimum vertical distance L2 between the ground-removing side of the second guard and the cutter disc, the risk of accidental contact between the user's hands or feet and the bottom of the cutter disc during operation and maintenance is effectively avoided. Whether for daily mowing operations or inspection and commissioning of the mower, this distance setting provides reliable safety protection, preventing injuries caused by accidental contact with the cutter disc and comprehensively ensuring the user's personal safety. If L2 is less than 5cm, impurities such as mud and sand can easily accumulate on the second guard, causing the blade to be obstructed and worn during rotation, resulting in unstable cutting, which can affect cutting quality and blade life.

[0052] Limiting L2 to no more than 20cm takes full account of the mower's maneuverability in complex terrain. If L2 is too large, the bottom guard can easily collide with raised obstacles on the ground, such as rocks and step edges, while the mower is moving. This not only affects the mower's normal movement but may also damage the guard components. This distance setting ensures the mower can traverse various terrains flexibly and smoothly, effectively improving the equipment's suitability and work efficiency.

[0053] The above-mentioned setting avoids the problem of restricted equipment use due to excessive pursuit of safety, or lowering safety standards to ensure passability. It enables the protective components to fully utilize the performance advantages of the lawn mower while ensuring safety, bringing users a better and more efficient use experience.

[0054] In some exemplary embodiments of the present application, the first connecting portion and the first protecting portion are arranged in parallel, and the angle between each and the horizontal plane is α, and 45°≤α≤90°.

[0055] In this embodiment, the vertical distance between the connection point of the first connecting portion and the first protective portion and the cutter disc is significantly increased horizontally near the bottom end. This design effectively widens the safety protection area around the cutter disc. Whether it is flying foreign objects or people accidentally approaching, the larger distance acts as a buffer, significantly reducing the risk of collision, establishing a more reliable safety line for lawn mower operation, and comprehensively ensuring the safety of personnel and equipment.

[0056] The angle range of 45° to 90° strikes a balance between safety and operational efficiency. An angle too small makes it difficult to maintain a safe distance, while a larger angle can affect the mower's maneuverability and cutting range. Within this range, the guard assembly effectively protects the cutterhead without hindering the mower's normal operation, ensuring stable operation in all terrain conditions, achieving both safety and efficiency improvements.

[0057] In some exemplary embodiments of the present application, the minimum horizontal distance between the side of the second protective portion close to the cutter disc and the first connecting portion is L3, 2cm≤L3≤7.5cm.

[0058] In this type of embodiment, the range of L3 is associated with the actual width of the second guard portion. Within this range, the bottom guard is ensured to have reasonable dimensions while still meeting its protective function. This width ensures that the bottom guard is moderately heavy and compact, allowing users to easily grasp and hold it during removal without exerting excessive force. This significantly improves the convenience of assembly and disassembly, significantly shortens maintenance time, and improves daily use efficiency.

[0059] This distance ensures the second guard effectively protects the bottom and sides of the cutter disc, blocking flying debris, stones, and other foreign objects during mowing, preventing them from causing damage to the surrounding environment and personnel. Furthermore, the appropriate width design ensures that the guard maintains an appropriate distance from the cutter disc, preventing normal operation from being affected by being too close, while also ensuring that the protective effect is not compromised due to being too far away, thus achieving precise control of protective performance.

[0060] In addition, the second protective part within this range can play a certain role in hooking and guiding the grass, directing the long grass path relatively on the periphery to the cutter disc, thereby increasing the cutting range of the cutter disc and facilitating lawn trimming.

[0061] In some exemplary embodiments of the present application, the forward direction of the intelligent lawn mower is the first direction, and the left and right lateral movement direction is the second direction. In the first direction, the ratio of the length of the first connecting part to the length of the second protective part is i, 0.5≤i≤0.75, and in the projection along the second direction, the center point of the first protective part, the center point of the second protective part and the axis of the cutting device coincide.

[0062] In this type of embodiment, the length of the first connecting portion is coordinated with the length of the second guard portion to ensure that the second guard portion provides adequate protection for the bottom of the cutterhead. By controlling the length of the first connecting portion, the overall mass of the guard assembly can be prevented from being excessively large or structurally complex. When the bottom guard needs to be removed, the optimal length ratio places the grip closer to the center of gravity, reducing the torque burden, significantly simplifying removal, and improving maintenance efficiency.

[0063] The design ensures that the center points of the first and second guard sections coincide with the cutting mechanism axis when projected along the second direction. This ensures precise alignment between the guard assembly and the cutterhead. This symmetrical layout ensures high balance in the first direction, preventing vibration or misalignment caused by eccentricity of the guard structure. This symmetrical structure ensures stable operation of the cutting mechanism, whether the mower is moving forward or in reverse.

[0064] A uniform and symmetrical chip removal channel is formed between the first and second guard sections. When the mower is operating, grass clippings and dirt are smoothly discharged along this symmetrical channel, eliminating the problems of chip collection and accumulation caused by narrow or asymmetrical channels. Furthermore, because the path of grass clippings from entering the chip removal space to exiting is uniform in length, chip removal efficiency is consistent across all sections, enhancing the self-cleaning capabilities of the guard assembly and reducing the need for manual cleaning.

[0065] In some exemplary embodiments of the present application, the bottom guard and the side guard are detachably connected by fasteners; and / or detachably connected by protrusions and recesses; and / or detachably connected by latches or keys; and / or detachably connected by a magnetic structure.

[0066] In the fastener-based embodiment, the bottom guard and side guards are connected using fasteners (such as screws and nuts), providing a strong and stable connection. The tightness of the fasteners can also be adjusted to control the tightness of the connection, ensuring that the guard assembly remains secure even under prolonged vibrations of the mower. Furthermore, the fasteners are highly versatile, making replacement and maintenance easy. When the guard assembly needs to be disassembled for cleaning or repair, conventional tools are required, reducing maintenance requirements and improving product durability and practicality.

[0067] In the embodiment of the protrusion-and-recess connection method, the connection is simple to operate and quick to assemble and disassemble. During installation, simply align the protrusion with the recess and push it in for automatic engagement. During disassembly, a simple press or flick releases the protrusion from the recess, without the need for any tools. This connection method shortens the assembly and disassembly time of the protective component and is suitable for frequent cleaning or inspection. Furthermore, the protrusion-and-recess structural design effectively prevents accidental detachment of the protective component, ensuring connection reliability while providing a more convenient user experience.

[0068] In embodiments involving latch or key connections, the use of latches or keys offers the advantages of precise positioning and quick installation. These latches or keys accurately define the relative position of the bottom guard and side guard, ensuring the precise positioning of the guard assembly after installation and preventing installation deviations from affecting the protective effect. During assembly and disassembly, simply inserting or removing the latch, or inserting or removing the key, completes the connection and disconnection process, resulting in a simple and efficient process. This connection method also offers high structural strength, capable of withstanding the impact and vibration generated during mower operation, ensuring stable operation of the guard assembly under complex operating conditions.

[0069] In the magnetic structure embodiment, the magnetic structure connection uses magnetic force to achieve rapid adsorption and separation of the bottom guard and the side guard. The operation process is extremely convenient and does not require complicated installation steps. It can be automatically connected by gently approaching. To separate, it only requires applying a certain external force to overcome the magnetic force. This connection method has no mechanical wear, a long service life, and will not cause the connection performance to deteriorate due to long-term use. In addition, the application of the magnetic structure makes the disassembly and assembly of the protective component more flexible, which is suitable for users with high requirements for operational convenience. At the same time, it also reduces the maintenance costs caused by damage to mechanical connection parts, and improves the intelligence and humanization level of the product.

[0070] According to a second aspect of the present application, a cutting device is provided, which is applied to an intelligent lawn mower, wherein the cutting device includes the protective component in the above embodiment.

[0071] In this embodiment, the side guards and bottom guard of the protective assembly are designed to be detachably connected. This allows the bottom guard to be quickly separated from the side guards when cleaning the cutting mechanism of the smart lawn mower, completely removing any grass clippings, dirt, and other debris remaining in the gap between the two. The side guards and bottom guards work together to form a three-dimensional protective system. The side guards are spaced from the blade disc to block grass clippings and foreign matter that fly during mowing. The bottom guard protects the underside of the blade disc without affecting the normal operation of the cutting mechanism. When removing the bottom guard, the user can insert their hand into the second opening between the blade disc and the bottom guard. This provides a more suitable gripping angle, reduces the risk of accidental contact with the blade disc during removal, improves the safety and convenience of the user's operation, and makes the lawn mower safer and more reliable to use. This arrangement ensures that the cutting mechanism both protects the blade disc and facilitates cleaning.

[0072] According to a third aspect of the present application, there is provided an intelligent lawn mower, which includes: a protective assembly as in the above embodiment, or includes a cutting device as in the above embodiment.

[0073] In this embodiment, the side guards and bottom guard of the protective assembly are designed to be detachably connected. This allows the bottom guard to be quickly separated from the side guards when cleaning the cutting mechanism of the smart lawn mower, completely removing any grass clippings, dirt, and other debris trapped between them. The side guards and bottom guard work together to form a three-dimensional protective system. The side guards are spaced from the blade disc to block grass clippings and foreign matter that fly during mowing. The bottom guard protects the underside of the blade disc without affecting the normal operation of the cutting mechanism. When removing the bottom guard, the user can insert their hand into the second opening between the blade disc and the bottom guard. This provides a more suitable gripping angle, reduces the risk of accidental contact with the blade disc during removal, improves the safety and convenience of the user's operation, and makes the lawn mower safer and more reliable. This arrangement ensures that the cutting mechanism both protects the blade disc and facilitates cleaning.

[0074] According to a fourth aspect of the present application, an intelligent lawn mower is provided, which includes a body, a cutting device and a protective assembly, wherein the cutting device is connected to the body, and the cutting device includes a blade disc; the protective assembly includes a side guard and a bottom guard, the side guard is formed with a accommodating space for rotating the blade disc and a first opening connected to the accommodating space, and the first opening is located at the bottom end of the side guard; the bottom guard is detachably arranged at the bottom end of the side guard, and at least part of the bottom guard covers at least part of the first opening; the bottom guard is formed with a second opening capable of exposing at least part of the outer edge of the blade disc, and the second opening is connected to the accommodating space.

[0075] In this embodiment, the side guards and bottom guard of the protective assembly are designed to be detachably connected. This allows the bottom guard to be quickly separated from the side guards when cleaning the cutting mechanism of the smart lawn mower, completely removing any grass clippings, dirt, and other debris remaining in the gap between the two. The side guards and bottom guards work together to form a three-dimensional protective system. The side guards are spaced from the blade disc to block grass clippings and foreign matter that fly during mowing. The bottom guard protects the underside of the blade disc without affecting the normal operation of the cutting mechanism. When removing the bottom guard, the user can insert their hand into the second opening between the blade disc and the bottom guard. This provides a more suitable gripping angle, reduces the risk of accidental contact with the blade disc during removal, improves the safety and convenience of the user's operation, and makes the lawn mower safer and more reliable to use. This arrangement ensures that the cutting mechanism both protects the blade disc and facilitates cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0076] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0077] Figure 1 A schematic front view of the assembled protective assembly and cutting device provided in one embodiment of the present application is shown.

[0078] Figure 2 A side view schematic diagram of the assembled protection assembly and cutting device provided by one embodiment of the present application is shown.

[0079] Figure 3 A bottom view schematically shows the assembled protective assembly and cutting device provided by one embodiment of the present application.

[0080] Figure 4 Shown Figure 1 An enlarged schematic diagram of the protective component and cutting device at point A after assembly.

[0081] Figure 5 Shown Figure 4 Schematic diagram of the matching parameters between the various components.

[0082] Figure 6 A cross-sectional schematic diagram of a protective assembly provided in one embodiment of the present application is shown.

[0083] Figure 7 A partially enlarged schematic diagram of the assembled protection component and cutting device provided in one embodiment of the present application is shown.

[0084] The above drawings include the following reference numerals:

[0085] 10. Side guard; 11. First guard portion; 111. Through hole; 20. Bottom guard; 21. First connecting portion; 22. Second guard portion; 30. Connecting member; 31. Abutting portion; 32. Trigger portion; 50. Smart lawn mower; 51. Cutting device; 511. Blade disc; 512. Drive structure; 513. Position adjustment structure; 100. First opening; 200. Second opening; X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0086] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent like or similar structures, and thus their detailed description will be omitted.

[0087] The features, structures or characteristics described above can be combined in one or more embodiments in any suitable manner, and if possible, the features discussed in each embodiment are interchangeable. In the above description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, materials, etc. can be adopted. In other cases, known structures, materials or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0088] Although relative terms such as "upper" and "lower" are used in this application to describe the relationship of one component of the illustrations to another component, these terms are used in this application for convenience only, such as based on the orientation of the examples depicted in the drawings. It is understood that if the illustrated device is flipped so that it is upside down, the component described as "upper" will become the component "lower". Other relative terms such as "high", "lower", "top", "bottom", "front", "back", "left", and "right" have similar meanings. When a structure is "on" another structure, it may mean that the structure is integrally formed on the other structure, that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure through the other structure.

[0089] In this application, the terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "comprising", "including" and "having" are used to express open-ended inclusion and mean that additional elements / components / etc. may be present in addition to the listed elements / components / etc.

[0090] In order to solve the problem that the protective structure of the intelligent lawn mower in the prior art cannot take into account both effective protection and rapid cleaning requirements.

[0091] See also Figures 1 to 3In some exemplary embodiments of the present application, a protective assembly is provided for a cutting device 51 of a smart lawn mower 50, the cutting device 51 including a blade disc 511, and the protective assembly including: a side guard 10 and a bottom guard 20, the side guard 10 forming an accommodation space for the blade disc 511 to rotate and a first opening 100 communicating with the accommodation space, the first opening 100 being located at the bottom end of the side guard 10; the bottom guard 20 being detachably disposed at the bottom end of the side guard 10, and at least a portion of the bottom guard 20 covering at least a portion of the first opening 100; the bottom guard 20 forming a second opening 200 capable of exposing at least a portion of the outer edge of the blade disc 511, the second opening 200 being communicated with the accommodation space.

[0092] The blade disc 511 is positioned within the storage space of the side guard 10 to protect the sides of the blade disc 511. Furthermore, a first opening 100 at the bottom of the storage space allows grass to pass through for cutting by the blade disc 511. The bottom guard 20 covers at least a portion of the first opening 100, protecting the bottom of the blade disc 511. Furthermore, a second opening 200 is provided in the bottom guard 20, exposing at least a portion of the outer edge of the blade disc 511. While maximizing the cutting area of ​​the blade disc 511, the operator can also see the outer edge of the blade disc 511. During removal, a user's hand can reach through the second opening 200 and avoid the outer edge of the blade disc 511, thereby preventing injuries and other safety hazards. Furthermore, since at least a portion of the bottom guard 20 is not obstructed by the blade disc 511, the operator's hand can more flexibly move above at least a portion of the bottom guard 20, allowing the operator to obtain a more suitable grip angle for flexible removal of the bottom guard 20.

[0093] When cleaning, the user can directly disassemble the bottom guard 20 and effectively clean the area between the bottom guard 20 and the side guard 10. During the disassembly process, the user's hand can be inserted into the second opening 200, located between the blade disc 511 and the bottom guard 20, so that there is a more suitable gripping angle and the hand is not likely to touch the blade disc 511, so the safety of cleaning can be taken into account.

[0094] See also Figure 1 In some exemplary embodiments of the present application, the entire outer edge of the blade disc 511 is exposed through the second opening 200. The entire outer edge of the blade disc 511 is separated from the bottom guard 20. When the user removes the bottom guard 20, the user can insert the hand into the second opening 200 from any position. With this arrangement, the user's grip angle is not restricted, making removal more convenient and safer.

[0095] Specifically, in a perspective along the third direction Z, the cutter disc 511 is completely exposed in the area surrounded by the first opening 100 , and at least a portion of the outer edge of the cutter disc 511 is exposed in the area surrounded by the second opening 200 .

[0096] In this embodiment, the entire outer edge of the blade disc 511 is exposed, maximizing the cutting area of ​​the blade disc 511 and preventing it from being obstructed by the bottom guard 20, thereby improving cutting efficiency. Furthermore, when removing the bottom guard 20, the operator can see the entire outer edge of the blade disc, further preventing injuries and other safety hazards, thereby increasing safety. Furthermore, without the blade disc 511 obstructing the top of the bottom guard 20, the operator can more flexibly maneuver above the bottom guard 20, allowing the operator to obtain a more suitable grip angle and flexibly remove the bottom guard 20.

[0097] In some embodiments, the impeller 511 is completely exposed within the area enclosed by the first opening 100 , and the entire outer edge of the impeller 511 is exposed within the area enclosed by the second opening 200 .

[0098] In some embodiments, the specific shape of the bottom guard 20 can be a circular arc or an arc shape surrounding the cutter disc 511, as long as the minimum straight-line distance between the bottom guard 20 and the cutter disc 511 is less than the minimum straight-line distance between the side guard 10 and the cutter disc 511, and the bottom guard 20 and the cutter disc 511 do not overlap.

[0099] In some embodiments, one side of the side guard 10 is fixedly connected to the cutting device 51, and the side guard 10 is spaced apart from the cutter disc 511; the bottom guard 20 is detachably connected to the side guard 10; wherein, in the projection on the horizontal plane, the minimum straight-line distance between the bottom guard 20 and the cutter disc 511 is smaller than the minimum straight-line distance between the side guard 10 and the cutter disc 511, and the bottom guard 20 and the cutter disc 511 do not overlap.

[0100] In some embodiments, the side guard 10 can be an integrated guard structure forming both sides of the entire blade disc 511 in the second direction Y, or it can be a separate side structure that is detachably connected to the component above the blade disc 511.

[0101] See also Figures 1 to 5 In some exemplary embodiments of the present application, the side guard 10 is constructed with a first guard portion 11 in the shape of a plate, and the bottom guard 20 is constructed with a first connecting portion 21 and a second guard portion 22 both in the shape of a plate, the first guard portion 11 and the first connecting portion 21 are detachably connected, the second guard portion 22 is arranged at an angle to the first guard portion 11, and the second guard portion 22 is parallel to the horizontal plane.

[0102] The first protection portion 11 of the side guard 10 and the first connection portion 21 of the bottom guard 20 are both plate-shaped and detachably connected. The plate-shaped structure increases the contact area between the two, making the connection more stable and ensuring the protection effect.

[0103] The second guard portion 22 is angled relative to the first guard portion 11 and parallel to the horizontal plane, creating an inclined debris removal space. Grass clippings, dirt, and other debris generated during mowing can quickly slide down the inclined surface and be discharged, preventing them from accumulating inside the guard assembly.

[0104] In some embodiments, the bottom protective member 20 may be an integrally formed structure, wherein the first connecting portion 21 and the second protective portion 22 are formed by bending parts. Such a processing technology is mature and has reliable precision.

[0105] See also Figures 1 to 5 In some exemplary embodiments of the present application, the protective assembly further includes a clamping member 30 , which is fixed to the first connecting portion 21 . The first protective portion 11 is provided with a through hole 111 , and the clamping member 30 is clamped with the through hole 111 .

[0106] The protective assembly features a snap-fit ​​structure between the snap-fitting member 30 and the through-hole 111. Users can quickly assemble and disassemble the bottom protective member 20 and the side protective member 10 with a simple press or snap action, without the need for additional tools. The quick assembly and disassembly feature of the snap-fitting member 30 makes maintenance of the protective assembly even easier.

[0107] See also Figures 1 to 5 In some exemplary embodiments of the present application, the clamping member 30 includes an abutting portion 31 and a triggering portion 32 , the through hole 111 is a through hole, and the abutting portion 31 abuts against the inner wall of the through hole 111 to achieve clamping.

[0108] The engaging member 30 securely engages the inner wall of the through-hole 111 via its abutting portion 31. For removal, simply operating the trigger portion 32 instantly releases the abutment, allowing for rapid separation of the bottom guard 20. The tight contact of the abutting portion 31 against the inner wall of the through-hole ensures precise positioning and reliable fixation of the bottom guard 20, avoiding blind spots caused by installation deviations and ensuring comprehensive safety during mowing operations.

[0109] In some embodiments, the abutment portion 31 and the trigger portion 32 are an integral structure, and are roughly strip-shaped, wherein the trigger portion 32 is roughly U-shaped, with its two ends roughly parallel or set at an obtuse angle, and the abutment portion 31 is plate-shaped, connected to the trigger portion 32, and the connection is set at an obtuse angle. An elastic force is formed at the U-turn of the trigger portion 32 through hard material, and elastic potential energy can be stored by pressing, so that the abutment portions 31 are close to each other. At this time, the circumferential size of the abutment portion 31 is slightly smaller than the inner diameter of the through hole, so that the relative displacement of the two can be achieved, thereby removing the bottom guard 20.

[0110] See also Figures 1 to 5 In some exemplary embodiments of the present application, the clamping member 30 is an elastic clamping member. The abutting portion 31 extends into the through hole 111 and abuts against its inner wall. The triggering portion 32 is located at the end of the through hole 111 away from the blade disc 511. The provision of the elastic clamping member has a high deformation recovery capability, which can ensure a stable connection. Even if the through hole deforms, it can be quickly overcome, avoiding protection failure.

[0111] The trigger portion 32 is located at the end of the through-hole 111 away from the blade disc 511. During disassembly, the user's hand is always outside the engaging portion, completely avoiding the danger zone of the blade disc 511. During installation, the automatic reset feature of the elastic engaging member allows the trigger portion 32 and the engaging portion 31 to elastically deform, facilitating their passage through the through-hole for installation. After passing through the through-hole, the elastic deformation is restored, achieving engagement, making assembly quick and easy.

[0112] See also Figures 1 to 5 In some exemplary embodiments of the present application, the first connecting portion 21 is a long strip-shaped plate, and along the length direction of the first connecting portion 21, there are at least two groups of clips 30 and through holes 111.

[0113] The multiple sets of snap-fit ​​structures increase the number of connection points between the bottom guard 20 and the side guards 10. These multiple snap-fit ​​points cooperate and constrain each other, effectively dissipating vibrations and external forces generated during operation, enhancing overall connection strength and ensuring more balanced force distribution. Even if one set of snap-fit ​​components 30 wears or malfunctions, the remaining snap-fit ​​components 30 will maintain effective connection between the bottom guard 20 and the side guards 10, preventing accidental detachment and minimizing safety risks.

[0114] In some embodiments, the clamping member 30 and the through hole 111 are two groups. When disassembling, the bottom guard 20 can be disassembled by pressing the two trigger parts 32 and pushing the bottom guard 20 toward the blade 511, which is very convenient.

[0115] In some embodiments, the clips 30 and the through holes 111 are in three groups. When disassembling, you can first press the trigger parts 32 on both sides to release the locks at both ends. By holding the bottom guard 20 with one hand and pressing the trigger part 32 in the middle with the other hand, the entire bottom guard 20 can be disassembled, while taking into account safety and convenience.

[0116] See also Figures 1 to 5 In some exemplary embodiments of the present application, the clamping member 30 is integrally formed with the first connecting portion 21. This eliminates the need for an additional assembly process between the clamping member 30 and the first connecting portion 21, effectively reducing the number of parts and assembly steps.

[0117] In some embodiments, the clamping member 30 is integrally formed on the first connecting portion 21 by welding and fixing, and has reliable connection strength.

[0118] In some embodiments, the clip 30 is connected to the first connecting portion 21 by direct machining.

[0119] like Figure 7 As shown, in some exemplary embodiments of the present application, the protective assembly further includes a clamping member 30 , which is fixed to the first protective portion 11 , and the first connecting portion 21 is provided with a through hole, and the clamping member 30 is clamped to the through hole.

[0120] The protective assembly features a snap-on connection between the clip 30 and the through-hole. Users can quickly remove and assemble the bottom guard 20 and side guard 10 with a simple press or snap action, without the need for additional tools. The quick assembly and removal of the clip 30 makes maintenance of the protective assembly even easier.

[0121] like Figure 7 As shown, in some exemplary embodiments of the present application, the clamping member 30 is an elastic clamping member, including an abutting portion 31 and a triggering portion 32, the through hole is a through hole, the abutting portion 31 extends into the through hole and abuts against the inner wall thereof, and the triggering portion 32 is located at the end of the through hole away from the blade disc 511, the first connecting portion 21 is a long strip-shaped plate, and along the length direction of the first connecting portion 21, the clamping member 30 and the through hole are at least two groups, and the clamping member 30 is integrally formed in the first protective portion 11.

[0122] In some embodiments, the abutment portion 31 and the trigger portion 32 are an integral structure, and are roughly strip-shaped, wherein the trigger portion 32 is roughly U-shaped, with its two ends roughly parallel or set at obtuse angles, and the abutment portion 31 is plate-shaped and connected to the trigger portion 32, and the connection is set at an obtuse angle. An elastic force is formed at the U-turn of the trigger portion 32 through hard material, and elastic potential energy can be stored by pressing, so that the abutment portions 31 are close to each other. At this time, the circumferential size of the abutment portion 31 is slightly smaller than the inner diameter of the through hole, so that the relative displacement of the two can be achieved, thereby removing the bottom guard 20.

[0123] In some embodiments, the clips 30 and the through holes are in two groups. When disassembling, the bottom guard 20 can be disassembled by pressing the two trigger parts 32 and pulling out the bottom guard 20 in a direction away from the blade disc 511, which is highly convenient.

[0124] In some embodiments, the clips 30 and the through holes are in three groups. When disassembling, you can first press the trigger parts 32 on both sides to release the locks on both ends. By holding the bottom guard 20 with one hand and pressing the trigger part 32 in the middle with the other hand, the entire bottom guard 20 can be disassembled, while taking into account safety and convenience.

[0125] See also Figure 4 In some exemplary embodiments of the present application, the minimum distance between the second guard portion 22 and the cutter disc 511 on a horizontal projection plane is L1, where L1 ≥ 0. Setting this minimum distance between the second guard portion 22 and the cutter disc 511 on a horizontal projection plane effectively protects the area below the cutter disc 511 from splashing foreign objects or accidental contact, while eliminating the need for a complex grass inlet structure.

[0126] In some embodiments, the minimum distance L1 between the second protective portion 22 and the blade disc 511 can be 0.1 cm, 0.15 cm, 0.2 cm, 0.25 cm, 0.3 cm, 0.35 cm, 0.4 cm, 0.45 cm, 0.5 cm, 0.55 cm, 0.6 cm, 0.65 cm, 0.7 cm, 0.75 cm, 0.8 cm, 0.85 cm, 0.9 cm, 0.95 cm, 1.0 cm, 1.05 cm, 1.1 cm, 1.15 cm, 1.2 cm, 1.25 cm, 1.3 cm, 1.35 cm, 1.4 cm, 1.45 cm or 1.5 cm, but is not limited to.

[0127] See also Figure 4In some exemplary embodiments of the present application, the minimum vertical distance between the side of the second protective portion 22 facing away from the ground and the cutterhead 511 is L2, where 5 cm ≤ L2 ≤ 20 cm. This configuration effectively reduces the risk of a user's hands or feet accidentally touching the bottom of the cutterhead 511 during operation or maintenance.

[0128] In some embodiments, the minimum distance L2 between the side of the second protective portion 22 away from the ground and the cutter disc 511 in the vertical direction can be 5 cm, 5.5 cm, 6 cm, 6.5 cm, 7 cm, 7.5 cm, 8 cm, 8.5 cm, 9 cm, 9.5 cm, 10 cm, 10.5 cm, 11 cm, 11.5 cm, 12 cm, 12.5 cm, 13 cm, 13.5 cm, 14 cm, 14.5 cm, 15 cm, 15.5 cm, 16 cm, 16.5 cm, 17 cm, 17.5 cm, 18 cm, 18.5 cm, 19 cm, 19.5 cm or 20 cm, but is not limited to,

[0129] The settings in the above embodiments avoid the problem of limited equipment use due to excessive pursuit of safety, or lowering safety standards to ensure passability. The protective components can fully utilize the performance advantages of the lawn mower while ensuring safety, bringing users a better and more efficient use experience.

[0130] See also Figure 4 In some exemplary embodiments of the present application, the first connecting portion 21 and the first protective portion 11 are arranged in parallel, and the angle between them and the horizontal plane is α, 45°≤α≤90°. This angle range is a balance between safety protection and equipment operation efficiency. If the angle is too small, it is difficult to ensure a sufficient safety distance; if the angle is too large, it may affect the passability and mowing range of the lawn mower. Within this angle range, the protective component can provide efficient protection for the cutter disc 511 without hindering the normal operation of the lawn mower, ensuring that the lawn mower can operate stably under various terrain conditions, achieving a dual improvement in safety and efficiency.

[0131] In some embodiments, the angle α between the first connecting portion 21 and the first protective portion 11 and the horizontal plane can be 45 degrees, 46 degrees, 47 degrees, 48 ​​degrees, 49 degrees, 50 degrees, 51 degrees, 52 degrees, 53 degrees, 54 degrees, 55 degrees, 56 degrees, 57 degrees, 58 degrees, 59 degrees, 60 degrees, 61 degrees, 62 degrees, 63 degrees, 64 degrees, 65 degrees, 66 degrees, 67 degrees, 68 degrees, 69 degrees, 70 degrees, 71 degrees, 72 degrees, 73 degrees, 74 degrees, 75 degrees, 76 degrees, 77 degrees, 78 degrees, 79 degrees, 80 degrees, 81 degrees, 82 degrees, 83 degrees, 84 degrees, 85 degrees, 86 degrees, 87 degrees, 88 degrees, 89 degrees or 90 degrees, but is not limited thereto.

[0132] See also Figure 4 In some exemplary embodiments of the present application, the minimum horizontal distance between the side of the second guard portion 22 closest to the blade disc 511 and the first connecting portion 21 is L3, with a range of 2cm≤L3≤7.5cm. The range of L3 is related to the actual width of the second guard portion 22. Within this range, the bottom guard 20 can be reasonably sized while still meeting its protective function. This width ensures that the bottom guard 20 is moderately heavy and compact, allowing users to easily grasp and hold it during removal without exerting excessive force. This significantly improves the convenience of assembly and disassembly, significantly shortens maintenance time, and improves daily use efficiency.

[0133] In addition, the second protective portion 22 within this range can play a certain role in hooking and guiding grass, guiding the long grass path relatively outside to the cutter disc 511, thereby increasing the cutting range of the cutter disc 511 and facilitating lawn trimming.

[0134] In some embodiments, the minimum horizontal distance L3 between the side of the second protective portion 22 close to the blade disc 511 and the first connecting portion 21 can be 2 cm, 2.5 cm, 3 cm, 3.5 cm, 4 cm, 4.5 cm, 5 cm, 5.5 cm, 6 cm, 6.5 cm, 7 cm or 7.5 cm, but is not limited thereto.

[0135] See also Figure 5 In some exemplary embodiments of the present application, the forward direction of the intelligent lawn mower 50 is defined as a first direction X, and the left-right lateral direction is defined as a second direction Y. In the first direction X, the ratio of the length of the first connecting portion 21 to the length of the second protective portion 22 is i, with 0.5≤i≤0.75. In the projection along the second direction Y, the center point of the first protective portion 11, the center point of the second protective portion 22, and the axis of the cutting device 51 coincide. The lengths of the first connecting portion 21 and the second protective portion 22 are coordinated to ensure that the second protective portion 22 provides sufficient protective coverage for the bottom of the cutter disc 511. By controlling the length of the first connecting portion 21, the overall mass of the protective assembly can be prevented from being excessively large or the structure being overly complex.

[0136] The design of coinciding the center points of the first and second guard portions 11, 22, and the axis of the cutting device 51 in the projection along the second direction Y ensures precise alignment of the guard assembly and the cutter head 511. This symmetrical layout ensures a high degree of balance for the cutting device 51 in the first direction X, preventing vibration or deviation of the device due to eccentricity of the guard structure.

[0137] It should be noted that the first direction X and the second direction Y are both horizontal directions and perpendicular to each other, and the third direction Z is a vertical direction and perpendicular to each other. The rotation axis of the cutting device and the rotation axis of the cutter disc are arranged parallel to the third direction Z.

[0138] like Figure 6 As shown, the length of the first connecting portion 21 is L4, the length of the first protecting portion 11 is L5, and i=L4 / L5.

[0139] In some embodiments, the ratio i of the length of the first connecting part 21 to the length of the first protective part 11 may be i=0.5, i=0.51, i=0.52, i=0.52, i=0.53, i=0.54, i=0.55, i=0.56, i=0.57, i=0.58, i=0.59, i= 0.6, i=0.61, i=0.62, i=0.63, i=0.64, i=0.65, i=0.66, i=0.67, i=0.68, i=0.69, i=0.7, i=0.71, i=0.72, i=0.73, i=0.74 or i=0.75, but is not limited thereto.

[0140] In some exemplary embodiments of the present application, the bottom guard 20 and the side guard 10 are detachably connected by fasteners; and / or detachably connected by protrusions and recesses; and / or detachably connected by latches or keys; and / or detachably connected by a magnetic structure.

[0141] In some embodiments, the bottom guard 20 and the side guard 10 are detachably connected by fasteners;

[0142] The bottom guard 20 and the side guard 10 are connected by fasteners (such as screws and nuts), which can provide a high-strength and stable connection effect.

[0143] In some embodiments, the bottom guard 20 and the side guard 10 are detachably connected via a protrusion and a recess. This protrusion-recess connection is easy to operate and quick to assemble and disassemble. During installation, simply align the protrusion with the recess and push it in for automatic engagement. For removal, simply press or slide the protrusion out of the recess, without the need for tools.

[0144] In some embodiments, the bottom guard 20 and the side guard 10 are detachably connected via a latch or key. Using a latch or key provides the advantages of precise positioning and quick installation. The latch or key accurately defines the relative position of the bottom guard 20 and the side guard 10, ensuring the precise positioning of the guard assembly after installation and preventing installation deviations from affecting the protective effect.

[0145] In some embodiments, the bottom guard 20 and the side guard 10 are detachably connected via a magnetic structure. This magnetic connection utilizes magnetic force to rapidly attach and detach the bottom guard 20 and side guard 10. This makes the process extremely convenient, requiring no complex installation steps. Simply bringing them close together automatically connects, and detaching requires only applying a certain amount of force to overcome the magnetic force.

[0146] In some embodiments, the detachable connection between the bottom guard 20 and the side guard 10 can be a combination of the above-mentioned different embodiments, such as a combination of the bottom guard 20 and the side guard 10 through a combination of a protrusion and a recess and a snap-on member 30, a combination of a fastener and a snap-on member 30, a combination of a pin or a key connection and a snap-on member 30 between the bottom guard 20 and the side guard 10, or a combination of a magnetic structure and a snap-on member 30 between the bottom guard 20 and the side guard 10, but is not limited to this, and may also include three, four or five combinations.

[0147] On the second aspect, in some exemplary embodiments of the present application, a cutting device 51 is provided, which is applied to an intelligent lawn mower 50. The cutting device 51 includes a protective component as described in any of the above embodiments.

[0148] On the third aspect, in some exemplary embodiments of the present application, a smart lawn mower 50 is provided, which mainly includes the protection component as in any of the above embodiments, or includes the cutting device 51 as in the above embodiments.

[0149] On the fourth aspect, in some exemplary embodiments of the present application, an intelligent lawn mower 50 is provided, which mainly includes: a body, a cutting device 51 and a protective assembly, the cutting device 51 is connected to the body, and the cutting device 51 includes a blade disc 511; the protective assembly includes a side guard 10 and a bottom guard 20, the side guard 10 is formed with a accommodating space for the blade disc 511 to rotate and a first opening 100 connected to the accommodating space, and the first opening 100 is located at the bottom end of the side guard 10; the bottom guard 20 is detachably arranged at the bottom end of the side guard 10, and at least part of the bottom guard 20 covers at least part of the first opening 100; the bottom guard 20 is formed with a second opening 200 that can expose at least part of the outer edge of the blade disc 511, and the second opening 200 is connected to the accommodating space.

[0150] It should be understood that the present application is not limited to the detailed structure and arrangement of the components proposed in this application. The present application can have other embodiments and can be implemented and executed in a variety of ways. The aforementioned variations and modifications fall within the scope of this application. It should be understood that the present application disclosed and defined in this application extends to all alternative combinations of two or more individual features mentioned or apparent in the text and / or the drawings. All of these different combinations constitute multiple alternative aspects of the present application. The embodiments described in this application illustrate the best known methods for implementing the present application and will enable those skilled in the art to utilize the present application.

Claims

1. A protective assembly for a cutting device of an intelligent lawn mower, wherein the cutting device includes a cutter disc, characterized in that: The protection component includes: a side guard, formed with an accommodation space for the cutter disc to rotate and a first opening communicating with the accommodation space, wherein the first opening is located at a bottom end of the side guard; a bottom guard detachably disposed at the bottom end of the side guard, wherein at least a portion of the bottom guard at least partially covers the first opening and is formed with a second opening capable of exposing at least a portion of the outer edge of the cutter disc, the second opening being in communication with the accommodating space; A clamping member, the clamping member comprising an abutting portion and a triggering portion; In which, the abutment portion is fixedly arranged on the side guard, the bottom guard is correspondingly provided with a through hole, the abutment portion abuts against the inner wall of the through hole to achieve snap connection, and / or, the abutment portion is fixedly arranged on the bottom guard, the side guard is correspondingly provided with a through hole, the abutment portion abuts against the inner wall of the through hole to achieve snap connection.

2. The protective assembly according to claim 1, characterized in that: The entire outer edge of the cutter disc exposes the second opening.

3. The protection assembly according to claim 1, characterized in that The side guard is constructed with a first plate-shaped guard portion, and the bottom guard is constructed with a first connecting portion and a second guard portion, both of which are plate-shaped. The first guard portion and the first connecting portion are detachably connected, and the second guard portion is arranged at an angle to the first guard portion, and the second guard portion is parallel to the horizontal plane.

4. The protection assembly according to claim 3, characterized in that: The clamping member is fixed to the first connecting portion, the through hole is provided on the first protective portion, and the abutting portion abuts against the inner wall of the through hole to achieve clamping.

5. The protection assembly according to claim 4, characterized in that: The clamping member is an elastic clamping member, the abutting portion extends into the through hole and abuts against the inner wall thereof, and the triggering portion is located at an end of the through hole away from the cutter disc.

6. The protection assembly according to claim 4, characterized in that: The first connecting portion is in the form of an elongated plate. Along the length direction of the first connecting portion, there are at least two groups of the clamping members and the through holes. The clamping members are integrally formed on the first connecting portion.

7. The protection assembly according to claim 3, characterized in that: The clamping piece is fixed to the first protective part, the through hole is provided on the first connecting part, the clamping piece is clamped with the through hole, the clamping piece is an elastic clamping piece, the abutting part abuts against the inner wall of the through hole after extending into the through hole, and the triggering part is located at the end of the through hole away from the blade disc, the first connecting part is a long strip plate, along the length direction of the first connecting part, the clamping piece and the through hole are at least two groups, and the clamping piece is integrally formed with the first protective part.

8. The protection assembly according to claim 3, characterized in that: On the vertical projection plane, the minimum distance in the vertical direction between the side of the second protective part away from the ground and the cutter disc is L2, 5cm≤L2≤20cm, and the minimum horizontal distance between the side of the second protective part close to the cutter disc and the first connecting part is L3, 2cm≤L3≤7.5cm.

9. A cutting device, applied to an intelligent lawn mower, characterized in that: The cutting device comprises a guard assembly according to any one of claims 1 to 8.

10. An intelligent lawn mower, characterized in that: include: A guard assembly as claimed in any one of claims 1 to 8, or comprising a cutting device as claimed in claim 9.

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