Cutterhead cover and mower

Abstract

The utility model provides a kind of cutterhead cover and mower, belong to mower technical field, cutterhead cover includes: cutterhead cover body, set in the bottom of the body of the mower, the cutterhead cover body has relatively arranged front end opening and rear end opening in the advancing direction of the mower, and at least one side plate is arranged in the body width direction of the mower, the body width direction is perpendicular to the advancing direction;Protective structure is connected to the front end opening or / and the rear end opening, the protective structure and the at least one side plate form protective barrier.The cutterhead cover and mower provided by the utility model can improve the safety protection performance of cutterhead cover while ensuring the mowing effect.

Description

Technical Field

[0001] This utility model relates to the field of lawnmower technology, and in particular to a blade cover and a lawnmower. Background Technology

[0002] A lawnmower is a common gardening tool used for trimming lawns and lawns. During lawnmower use, the blade guard is a crucial safety component, typically located above or around the rotating blades, situated along with the blades at the bottom of the mower body. In existing technology, there is a certain distance between the blade guard and the edge of the machine body. This results in grass being cut and left behind at the edges, affecting mowing efficiency. If the blade guard is placed too close to the edge to improve cutting performance, it protrudes from the edge, posing a safety hazard as the user's hands or feet could easily enter through the opening and come into contact with the blades. Furthermore, during mowing, grass clippings and other debris can easily fly into the blade guard, causing impact damage to the blades and transmission components. Utility Model Content

[0003] The purpose of this utility model is to overcome at least one of the shortcomings of the prior art and to provide a blade cover and a lawnmower that can ensure the mowing effect while improving the safety protection performance of the blade cover.

[0004] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

[0005] According to a first aspect of the present invention, a blade cover is provided for a lawnmower, the blade cover comprising:

[0006] The blade cover body is disposed at the bottom of the lawnmower body. The blade cover body has a front opening and a rear opening that are disposed opposite to each other in the forward direction of the lawnmower, and at least one side plate disposed in the width direction of the lawnmower body, the width direction of the body being perpendicular to the forward direction.

[0007] A protective structure is connected to the front opening and / or the rear opening, and the protective structure and the at least one side plate form a protective barrier.

[0008] The blade cover provided by this utility model is located at the bottom of the machine body. It can not only directly cover the blade of the lawnmower, providing installation space and a protective shell for the blade, preventing damage to the blade from external debris during operation and ensuring normal operation of the blade; but also the stable blade cover body structure can provide a reliable mowing working environment for the lawnmower, reduce power loss caused by blade interference, and indirectly improve the fuel economy or battery life of the lawnmower.

[0009] The presence of the opening at the front end of the cutter head cover allows the grass to enter the cover in an orderly manner. After being cut by the cutter head, the grass is discharged from the rear opening. Thus, the combined effect of the front and rear openings creates a through-flow airflow channel, ensuring normal operation of the cutter head while reducing the rate of cutter head jamming and extending its service life.

[0010] The side panels are arranged along the width of the machine body, which not only limits the lateral movement of grass in the working area of ​​the cutter head, allowing the grass to enter the cutting area of ​​the cutter head more concentratedly and improving the cutting efficiency, but also limits the lateral scattering angle of the grass fragments, reducing the risk of damage to surrounding personnel / properties from lateral splashes.

[0011] The protective structure added near the edge of the front opening and / or rear opening serves two purposes. First, it forms a protective barrier with at least one side plate, preventing grass clippings, gravel, and other debris from accidentally entering the cutter head cover during lawnmower operation and causing blade jamming. This provides a stable protective space for the internal cutter head, preventing displacement or damage due to external impacts, reducing downtime, and extending the service life of the cutter head and cutter head cover. Second, the protective structure reduces the probability of debris generated during mowing being ejected from the front or rear opening of the cutter head cover, thus preventing injury to operators and surrounding personnel. The space between the protective structure and the side plate also allows grass stems to pass through flexibly, ensuring the continuity and smoothness of mowing operations. The protective structure can be configured as a block, grid, or extension plate, selectively connected to the front or rear opening, or simultaneously connected to both openings, to protect against potential risks in different operating directions.

[0012] In addition, the protective barrier blocks grass clippings, creating a relatively stable flow field within the blade cover and reducing the scattering of grass clippings. This allows the lawnmower blades to cut and shred grass clippings more efficiently, preventing them from tangling around the blades and affecting the cutting effect, thus ensuring the continuity and efficiency of the mowing operation.

[0013] The protective barrier is designed to prevent human limbs from accidentally entering the cutter head area through the opening, while simultaneously blocking external foreign objects from entering the cutter head cover. The side panels are positioned along the width of the machine body to ensure adequate coverage of the protective barrier in the lateral direction of the lawnmower. The optional connection design of the protective structure provides targeted protection against foreign object splash paths in different operating directions without affecting the normal cutting function of the cutter head.

[0014] According to a second aspect of the present invention, a blade cover is provided for a lawnmower, the blade cover comprising:

[0015] The blade cover body is disposed at the bottom of the lawnmower body. The blade cover body has a front opening and a rear opening that are disposed opposite to each other in the forward direction of the lawnmower, and at least one side plate disposed in the width direction of the lawnmower body, wherein the width direction of the body is perpendicular to the forward direction.

[0016] A protective structure is connected to the front opening and / or the rear opening, and the protective structure and the at least one side plate form a protective barrier.

[0017] Wherein, in the direction of fuselage width, the minimum distance between the protective structure and the at least one side plate is less than 5cm.

[0018] The blade cover provided by this utility model is located at the bottom of the machine body. It can not only directly cover the blade of the lawnmower, providing installation space and a protective shell for the blade, preventing damage to the blade from external debris during operation and ensuring normal operation of the blade; but also the stable blade cover body structure can provide a reliable mowing working environment for the lawnmower, reduce power loss caused by blade interference, and indirectly improve the fuel economy or battery life of the lawnmower.

[0019] The presence of the opening at the front end of the cutter head cover allows the grass to enter the cover in an orderly manner. After being cut by the cutter head, the grass is discharged from the rear opening. Thus, the combined effect of the front and rear openings creates a through-flow airflow channel, ensuring normal operation of the cutter head while reducing the rate of cutter head jamming and extending its service life.

[0020] The side panels are arranged along the width of the machine body, which not only limits the lateral movement of grass in the working area of ​​the cutter head, allowing the grass to enter the cutting area of ​​the cutter head more concentratedly and improving the cutting efficiency, but also limits the lateral scattering angle of the grass fragments, reducing the risk of damage to surrounding personnel / properties from lateral splashes.

[0021] The protective structure added near the edge of the front opening and / or rear opening serves two purposes. First, it forms a protective barrier with at least one side plate, preventing grass clippings, gravel, and other debris from accidentally entering the cutter head cover during lawnmower operation and causing blade jamming. This provides a stable protective space for the internal cutter head, preventing displacement or damage due to external impacts, reducing downtime, and extending the service life of the cutter head and cutter head cover. Second, the protective structure reduces the probability of debris generated during mowing being ejected from the front or rear opening of the cutter head cover, thus preventing injury to operators and surrounding personnel. The space between the protective structure and the side plate also allows grass stems to pass through flexibly, ensuring the continuity and smoothness of mowing operations. The protective structure can be configured as a block, grid, or extension plate, selectively connected to the front or rear opening, or simultaneously connected to both openings, to protect against potential risks in different operating directions.

[0022] In addition, the protective barrier blocks grass clippings, creating a relatively stable flow field within the blade cover and reducing the scattering of grass clippings. This allows the lawnmower blades to cut and shred grass clippings more efficiently, preventing them from tangling around the blades and affecting the cutting effect, thus ensuring the continuity and efficiency of the mowing operation.

[0023] The extension length of the side panel in the width direction of the machine body complements the coverage area of ​​the protective structure, with the gap between them controlled within 5cm. This gap not only prevents flying gravel or grass clippings larger than 5cm in diameter from entering the cutter head cover due to size limitations, but also effectively prevents small animals, user fingers, or tools from accidentally entering the cutter head working area, avoiding unnecessary accidents; thus making the protective barrier more compact and further enhancing the protective effect. The spacing between the protective structure and the side panel is set based on the size of foreign objects and ergonomic data. For example, gravel smaller than 5cm in diameter has less impact on the blades and a lower probability of damaging them, and the width of an adult's palm or foot is generally greater than 5cm. By limiting the gap to within 5cm, both foreign object intrusion and accidental entry of limbs are prevented.

[0024] By reducing debris splashing, wear and tear on the blades and other components during lawnmower operation is reduced, extending the lifespan of all parts and thus lowering maintenance costs. At the same time, reducing debris splashing also helps keep the area around the lawnmower clean, improving the quality of the mowing operation.

[0025] According to a third aspect of the present invention, a blade cover is provided for a lawnmower, the blade cover comprising:

[0026] The blade cover body is disposed at the bottom of the lawnmower body. The blade cover body has a front opening and a rear opening that are disposed opposite to each other in the forward direction of the lawnmower, and at least one side plate disposed in the width direction of the lawnmower body, wherein the width direction of the body is perpendicular to the forward direction.

[0027] A protective structure is connected to the front opening and / or the rear opening, and the protective structure and the at least one side plate form a protective barrier.

[0028] The protective structure is adjustable relative to the cutter head cover body in the width direction of the machine body to change the distance between the protective structure and the at least one side plate.

[0029] The blade cover provided by this utility model is located at the bottom of the machine body. It can not only directly cover the blade of the lawnmower, providing installation space and a protective shell for the blade, preventing damage to the blade from external debris during operation and ensuring normal operation of the blade; but also the stable blade cover body structure can provide a reliable mowing working environment for the lawnmower, reduce power loss caused by blade interference, and indirectly improve the fuel economy or battery life of the lawnmower.

[0030] The presence of the opening at the front end of the cutter head cover allows the grass to enter the cover in an orderly manner. After being cut by the cutter head, the grass is discharged from the rear opening. Thus, the combined effect of the front and rear openings creates a through-flow airflow channel, ensuring normal operation of the cutter head while reducing the rate of cutter head jamming and extending its service life.

[0031] The side panels are arranged along the width of the machine body, which not only limits the lateral movement of grass in the working area of ​​the cutter head, allowing the grass to enter the cutting area of ​​the cutter head more concentratedly and improving the cutting efficiency, but also limits the lateral scattering angle of the grass fragments, reducing the risk of damage to surrounding personnel / properties from lateral splashes.

[0032] The protective structure added near the edge of the front opening and / or rear opening serves two purposes. First, it forms a protective barrier with at least one side plate, preventing grass clippings, gravel, and other debris from accidentally entering the cutter head cover during lawnmower operation and causing blade jamming. This provides a stable protective space for the internal cutter head, preventing displacement or damage due to external impacts, reducing downtime, and extending the service life of the cutter head and cutter head cover. Second, the protective structure reduces the probability of debris generated during mowing being ejected from the front or rear opening of the cutter head cover, thus preventing injury to operators and surrounding personnel. The space between the protective structure and the side plate also allows grass stems to pass through flexibly, ensuring the continuity and smoothness of mowing operations. The protective structure can be configured as a block, grid, or extension plate, selectively connected to the front or rear opening, or simultaneously connected to both openings, to protect against potential risks in different operating directions.

[0033] In addition, the protective barrier blocks grass clippings, creating a relatively stable flow field within the blade cover and reducing the scattering of grass clippings. This allows the lawnmower blades to cut and shred grass clippings more efficiently, preventing them from tangling around the blades and affecting the cutting effect, thus ensuring the continuity and efficiency of the mowing operation.

[0034] The adjustable protective structure gives the cutter head cover greater functional adaptability. In different mowing scenarios, operators can flexibly adjust the distance between the protective structure and the side panels according to actual needs. For example, in areas with sparse grass and less debris, appropriately increasing the distance allows grass to enter the cutter head's working area more smoothly, ensuring mowing efficiency; while in areas with dense grass and more debris, decreasing the distance enhances the protective barrier's ability to block debris, preventing excessive debris from entering the cutter head and affecting work. This adjustment function also facilitates adjusting the position of the protective structure during cutter head maintenance or replacement, leaving sufficient space for easy operation.

[0035] By flexibly adjusting the spacing, the lawnmower can maintain optimal working condition under various circumstances. This avoids problems such as grass clogging and blade jamming caused by improper spacing of the protective structure, reducing downtime and thus improving the lawnmower's efficiency and lifespan. Furthermore, adjusting the spacing according to different operational needs optimizes the lawnmower's power distribution, reducing energy consumption and improving fuel economy or battery range while ensuring mowing effectiveness.

[0036] Furthermore, the adjustable protective structure better adapts to the safety needs of various complex working environments. When working near obstacles or in areas with high personnel activity, reducing the distance can effectively prevent flying debris from injuring others; while in open areas with few safety hazards, the distance can be appropriately increased to improve mowing efficiency while ensuring a certain level of protection.

[0037] In some exemplary embodiments of this utility model, the side plate includes a first side plate and a second side plate disposed opposite to each other in the width direction of the lawnmower.

[0038] Specifically, the first and second side plates are positioned opposite each other, forming a complete boundary constraint along the width of the lawnmower body. Together with the protective structures at the front and rear openings, they create a more enclosed working space for the cutter head. This not only effectively limits the lateral movement of the grass, guiding it precisely into the cutting area of ​​the cutter head and preventing it from scattering and affecting the cutting effect, but also blocks grass clippings, pebbles, and other debris that fly to both sides during the cutting process, preventing them from spreading outside the lawnmower and maintaining a relatively clean working environment. At the same time, the side plates provide some support and protection for the cutter head, enhancing the structural stability of the cutter head cover body, reducing wobbling during operation, and ensuring cutting accuracy.

[0039] Secondly, the presence of side plates helps optimize the mower's cutting performance. Because the grass is guided more concentratedly to the blades, the blades can complete the cutting work more efficiently, reducing ineffective and repeated cuts, and improving mowing efficiency. Furthermore, a stable working environment for the blades reduces wear and tear caused by collisions and friction between the blades and the blade cover body, extending the service life of the blades and related components, and reducing equipment maintenance costs and downtime.

[0040] Furthermore, the protective boundary formed by the first and second side plates significantly enhances the safety performance of the lawnmower. The first and second side plates effectively prevent the operator's limbs from accidentally coming into contact with the high-speed rotating blades during operation, reducing the risk of cuts. Simultaneously, the first and second side plates prevent debris from spreading to both sides, avoiding injury to surrounding personnel and objects. This two-way protection provides a more reliable safety guarantee for the surrounding environment, especially when operating in areas with high pedestrian traffic. During the transport or storage of the lawnmower, the side plates also serve to fix and protect the blades, preventing damage from shaking or collisions and ensuring the safety and integrity of the equipment.

[0041] In some exemplary embodiments of this utility model, the blade cover body further has a top surface that is disposed opposite to the body height of the lawnmower, the top surface is connected to the first side plate and the second side plate, and a receiving space for accommodating the blade is formed between the top surface, the first side plate and the second side plate;

[0042] The protective structure includes at least one block, one end of which is connected to the top surface and the other end extends toward the accommodating space.

[0043] In this embodiment, the top surface is connected to the first side plate and the second side plate, so that when the cutter head cover is installed and used, the top surface is set facing the ground, forming an inverted receiving space with the first side plate and the second side plate. This not only prevents obstacles such as gravel and dust on the ground from impacting the cutter head and avoiding damage to the cutter head, but also helps to stabilize the position of the cutter head during operation, reducing the wobble of the cutter head caused by uneven ground, thereby improving the cutting accuracy.

[0044] The stop block connects to the top surface and extends into the receiving space, forming a protective barrier beneath the cutter head. It effectively prevents larger stones, branches, and other debris from entering the cutter head's working area, preventing collisions and damage to the cutter head and cutter head cover. Simultaneously, when positioned at the front opening, the stop block also provides initial obstruction and sorting for grass and other debris that haven't yet entered the receiving space, resulting in smoother cutting and reduced ineffective and repeated cuts caused by debris interference, further improving the lawnmower's efficiency. Moreover, because the stop block prevents debris from impacting the top surface, it extends the top surface's lifespan, indirectly reducing the overall maintenance cost of the cutter head cover.

[0045] Furthermore, in the event of a blade malfunction (such as a broken blade), the stop block can intercept flying debris, confining the area of ​​injury within the blade cover and preventing injury to the operator and surrounding personnel. The stop block also prevents operators from accidentally putting their feet into the blade's working area during mowing, providing more comprehensive safety protection.

[0046] In some exemplary embodiments of this utility model, there are multiple blocks, and the multiple blocks are arranged at intervals along the width direction of the machine body, with the gap between two adjacent blocks forming a combing channel.

[0047] In this embodiment, multiple baffles are spaced apart, forming a staggered protective array within the cutter head cover. On one hand, each baffle independently blocks debris, enhancing the interception of large foreign objects such as stones and branches. On the other hand, the combing channels between adjacent baffles can orderly comb the grass. When the baffles are positioned at the front opening, the grass is initially combed by the combing channels before entering the cutter head's cutting area, straightening its growth direction and preventing it from becoming tangled in the cutter head, ensuring a smooth cutting path and allowing the grass to enter the cutting range more efficiently. When the baffles are positioned at the rear opening, the combing channels also provide a directional discharge path for the grass clippings, preventing disorderly accumulation of grass clippings within the cutter head cover.

[0048] Secondly, an orderly flow of grass reduces the operating resistance of the cutter head, optimizes the motor load, thereby reducing energy consumption and extending the lawnmower's battery life or reducing fuel consumption. Furthermore, by reducing grass clippings and debris impact on the cutter head, wear on the cutter head, stops, and cutter head cover is reduced, extending equipment maintenance cycles and lowering maintenance costs.

[0049] Furthermore, the protective system composed of multiple blocks enhances the safety protection capability of the cutter head cover. The densely arranged blocks further reduce the possibility of foreign objects entering the working area of ​​the cutter head, and even if one block is damaged, the other blocks can still maintain the protective effect.

[0050] In some exemplary embodiments of this utility model, the distance between two adjacent blocks is greater than or equal to 1 cm and less than or equal to 3 cm.

[0051] In this embodiment, a spacing of 1-3cm can effectively block large debris such as stones and clods of soil with a diameter of more than 3cm from entering the blade area and prevent them from damaging the blade; it can also prevent the ideal grass combing effect from being not achieved due to excessive spacing; and it can also avoid grass blocking the channel due to excessive spacing, ensuring that grass stems can pass through the grass combing channel smoothly in a natural state.

[0052] In some exemplary embodiments of this utility model, the lengths of the first side plate and the second side plate in the height direction of the fuselage are both greater than the length of the stop block in the height direction of the fuselage.

[0053] In this embodiment, the longer side plate provides more comprehensive protection for the sides of the cutter head cover compared to the stop block. At the same time, the height difference formed by the side plate not only prevents the stop block from interfering with the lawnmower body, but also forms a structure similar to a guide channel on both sides of the cutter head cover. Together with the stop block and the combing channel, it guides grass and grass clippings to flow towards the opening of the cutter head cover, preventing grass clippings from accumulating on the sides of the cutter head cover and ensuring unobstructed flow in the working area of ​​the cutter head.

[0054] In some exemplary embodiments of this utility model, the stop block is detachably connected to the top surface.

[0055] In this embodiment, the detachable connection makes the baffles independent functional modules. Different baffles (such as those with different spacing, height, or material) can be quickly replaced to handle different weed conditions. For example, when dealing with high-fiber weeds, smaller-spaced baffles enhance the weeding effect; when dealing with wet weeds, smooth-surfaced stainless steel baffles reduce adhesion. This design also allows for adjusting the number of baffles according to operational needs—reducing the number of baffles when improved weed removal efficiency is required, and increasing the number of baffles when enhanced protection is needed. Furthermore, the detachable structure facilitates cleaning of accumulated weeds between the baffles, preventing channel blockage caused by weed accumulation.

[0056] In some exemplary embodiments of this utility model, the top surface is provided with multiple installation positions, and the stop block can be detachably connected to any of the installation positions.

[0057] In this embodiment, the multi-position installation design greatly enhances the functional flexibility of the cutter head cover. Operators can install the blocks in different positions to change the layout and size of the combing channels according to different mowing needs. For example, when mowing large, flat lawns, the blocks can be installed near the center of the cutter head to create wider combing channels and improve grass passage efficiency; while when mowing complex terrain or dense grass, the blocks can be installed at the edges to reduce the spacing between combing channels and enhance the ability to comb and block weeds. Furthermore, this design allows the blocks to be moved to other positions for continued use if some installation positions are damaged, ensuring that the basic functions of the cutter head cover are not affected.

[0058] Secondly, the combination of multiple installation positions and detachable connections provides dual protection for the safe operation of the lawnmower. On the one hand, the position of the stop can be flexibly adjusted to enhance protection based on the safety risks of the working environment. For example, when operating near areas with high foot traffic, the stop can be installed closer to the edge of the blade disc to better block flying debris. On the other hand, it facilitates regular disassembly and inspection, allowing for timely detection of wear and damage to the top surface and the stop, eliminating potential safety hazards. Furthermore, in case of emergencies (such as the stop being jammed by a foreign object), it can be quickly disassembled and reinstalled in another position, preventing accidents caused by malfunctions.

[0059] In some exemplary embodiments of this utility model, the stop block is provided with a threaded hole, and the mounting position is provided with a mounting hole that matches the threaded hole;

[0060] The cutter head cover also includes fasteners that can pass through the mounting hole and at least be screwed into the threaded hole.

[0061] In this embodiment, the threaded connection provides a high-strength mechanical connection, thus able to withstand the vibration and impact loads generated by the high-speed rotation of the cutter head. This ensures the stop is securely and reliably installed, preventing it from loosening or falling off due to vibration or other factors during lawnmower operation, thereby guaranteeing the stability and safety of the protective structure. Furthermore, the threaded connection allows for quick disassembly and installation without the need for specialized tools; operators can replace a single stop quickly using a standard wrench, significantly reducing equipment maintenance time.

[0062] In some exemplary embodiments of this utility model, there are multiple mounting holes, and the multiple mounting holes are arranged at intervals along the width direction of the body.

[0063] In this embodiment, the mounting holes spaced apart along the width of the machine body provide more options and adjustment space for the installation of the stops, optimizing the protective barrier. This allows users to precisely adjust the installation position of the stops according to actual needs, optimizing the layout of the protective structure to meet different mowing operation requirements and further improving the adaptability and adjustability of the cutter head cover.

[0064] Secondly, the spaced mounting holes allow the force on the stops to be distributed more evenly. When the cutter head is subjected to impact or vibration, multiple stops are connected to the top surface through the mounting holes to share the external force, avoiding local stress concentration that could lead to component damage and improving the overall safety and reliability of the cutter head cover.

[0065] In some exemplary embodiments of this utility model, the plurality of mounting holes include at least a first mounting hole and a second mounting hole, wherein the second mounting hole is located on the side of the first mounting hole away from the first side plate;

[0066] The distance between the first mounting hole and the first side plate is less than 2cm;

[0067] The distance between the second mounting hole and the first side plate is less than 4 cm.

[0068] In this embodiment, the distance between the first mounting hole and the first side plate is less than 2 cm, allowing the stop block to be installed close to the edge of the cutter head cover. This effectively intercepts debris flying in from the side edge of the fuselage, such as low shrub branches and gravel kicked up from the ground, preventing them from impacting the cutter head. The distance between the second mounting hole and the first side plate is less than 4 cm, providing a second protective barrier on top of the first mounting hole, forming a stepped protective structure. When one stop block is damaged, the other stop block can still maintain basic protective function, ensuring the continuity of protection for the edge of the cutter head cover.

[0069] In other words, the distance between the first and second mounting holes and the first side plate is limited, so that the effective distance between the protective structure and the side plate can be guaranteed when the block is installed in different positions, ensuring the protective effect. At the same time, it is also convenient to flexibly select the appropriate mounting hole for the block installation according to the width and shape of the mowing area, improving the flexibility of the cutter head cover.

[0070] In some exemplary embodiments of this utility model, the stop block has an inclined avoidance surface on the side facing the center of the cutter head cover body. The avoidance surface forms an avoidance angle with the forward direction. The avoidance angle is used to guide grass clippings and avoid interference with the cutter head when the cutter head is working.

[0071] In this embodiment, when the cutter head is working, on the one hand, the inclined angle of the avoidance surface forms a smooth transition channel, which can guide the grass clippings to pass smoothly and avoid grass clippings accumulating between the stop block and the cutter head; on the other hand, the design of the avoidance surface and the avoidance angle creates a safe gap between the stop block and the cutter head, which can effectively prevent the cutter head from interfering with the stop block when it is slightly displaced due to vibration or uneven ground, ensuring the normal rotation of the cutter head and the smooth operation of grass cutting, improving the coordination and working stability of the cutter head cover and the cutter head, thereby reducing the wear and impact load on the edge of the cutter head and extending its service life.

[0072] In some exemplary embodiments of this utility model, the avoidance angle is greater than 90 degrees and less than 180 degrees.

[0073] In this embodiment, the avoidance angle is limited to between 90 and 180 degrees. This ensures that the avoidance surface effectively guides the grass clippings, while avoiding the risk of grass clippings rebounding and accumulating on the surface of the stop block and increasing the risk of interference between the stop block and the cutter head due to an excessively small angle, or the impact of the stop block's protective effect due to an excessively large angle. This balances the protective effect and working performance of the cutter head cover.

[0074] In some exemplary embodiments of this utility model, the blade cover body further has a top surface disposed opposite to the lawnmower body in the height direction, the top surface connecting the first side plate and the second side plate, and a receiving space for accommodating the blade is formed between the top surface, the first side plate, and the second side plate; and

[0075] A maintenance window is provided on the top surface so that the blades in the cutter head are at least partially exposed to the maintenance window.

[0076] In this embodiment, the maintenance window allows operators to directly access the blades without disassembling the entire blade cover, improving maintenance efficiency, reducing maintenance difficulty, and thus minimizing lawnmower downtime, enhancing ease of use and work efficiency. Furthermore, the maintenance method that eliminates the need to disassemble the blade cover reduces the risk of component damage and improper installation caused by frequent disassembly, avoiding safety hazards arising from an insecurely installed blade cover. Simultaneously, during maintenance, other parts of the blade cover remain protected, reducing the possibility of operators accidentally touching the operating blades.

[0077] In some exemplary embodiments of this utility model, the width of the maintenance window is greater than the width of the blade.

[0078] In this embodiment, the width of the maintenance window is designed to be greater than the width of the blade to ensure that the blade can pass smoothly through the maintenance window for installation, removal, and maintenance operations, providing ample space for blade maintenance. When replacing the blade, there is no need to laboriously remove or insert the blade from the narrow gap; the blade can be directly and completely passed through the window for replacement, making the operation smoother.

[0079] In some exemplary embodiments of this utility model, one of the maintenance window and the protective structure is located at the front opening and the other is located at the rear opening.

[0080] In this embodiment, the maintenance window and protective structure are respectively located at the front and rear openings, ensuring that the maintenance and protective functions of the cutter head cover do not interfere with each other. On one hand, this layout avoids the spatial conflicts that might arise from simultaneously placing the maintenance window and protective structure at the same opening, making full use of the space resources at the front and rear of the cutter head cover. Within the limited structure of the cutter head cover, it ensures both the integrity and effectiveness of the protective structure while providing sufficient size and operating space for the maintenance window, achieving a balance between function and space. On the other hand, the clear functional zoning at the front and rear allows maintenance personnel to quickly locate the maintenance window for operation, eliminating the need to search for entry points within a complex structure. Furthermore, since the protective structure and maintenance window are independent, accidental contact with the protective structure during maintenance will not cause damage or malfunction, reducing additional maintenance costs and risks.

[0081] In some exemplary embodiments of this utility model, the maintenance window is disposed at the rear opening, the protective structure is disposed at the front opening, and the opening width of the front opening is greater than the opening width of the rear opening.

[0082] In this embodiment, when the protective structure is located at the front opening, it can block weeds, stones and other debris in front of the lawnmower as it moves forward, ensuring the safety of the blade. The maintenance window located at the rear opening allows the operator to easily inspect and maintain the blade from the rear after the lawnmower has finished its work, making the operation path clearer and the user experience smoother.

[0083] The front opening is wider than the rear opening, allowing the larger front opening to capture a larger area of ​​grass within the cutting space of the blade during mowing. The grass is then gathered and discharged by the gradually narrowing rear opening. This process greatly improves mowing efficiency and makes subsequent cleanup work more convenient and efficient.

[0084] In some exemplary embodiments of this utility model, the maintenance window is constructed as a U-shaped structure, and the opening of the U-shaped structure is located away from the center of the cutter head cover body.

[0085] In this embodiment, the U-shaped maintenance window significantly expands the operator's working space. Compared to a traditional rectangular window, the U-shaped recessed design allows tools and hands to be inserted from multiple angles, facilitating the operation of blades, screws, and other components at different locations on the cutter head. When tightening blade screws, the U-shaped opening allows the screwdriver to apply force at a more comfortable angle, effectively reducing the difficulty of operation. Furthermore, the U-shaped maintenance window also facilitates the removal of weeds that accumulate around it.

[0086] The opening is positioned away from the center, allowing the maintenance window to provide a more convenient operating space for blade maintenance without affecting the normal operation of the cutter head, thus further improving the convenience and efficiency of blade maintenance.

[0087] According to a fourth aspect of the present invention, a lawnmower is provided, including a blade cover according to any of the above embodiments.

[0088] The lawnmower provided in this embodiment of the present invention has the same beneficial effects as the blade cover provided in the above embodiment, and will not be described again here.

[0089] In some exemplary embodiments of this utility model, the blade cover is movable relative to the lawnmower body in the width direction of the body.

[0090] In this embodiment, the lateral movement of the cutter head cover can cause the cutter head to shift synchronously, thus allowing the lawnmower to flexibly switch between left and right side priority operation modes. For example, when operating on the right side of the road, the cutter head cover can be moved to the right to extend the mowing range on the right side beyond the machine body, preventing the machine body from running over the already mowed lawn; the same applies when operating on the left side, improving the operating efficiency of complex layout sites.

[0091] In addition, the lateral movement of the cutter head cover can serve as a passive collision avoidance measure. When the cutter head accidentally collides with an obstacle, the movement of the cutter head cover can absorb some of the impact energy, reducing rigid damage to the cutter head and the machine body.

[0092] According to a fifth aspect of the present invention, a lawnmower is provided, including a blade cover according to any of the above embodiments, wherein in a first working state, the orthographic projection of at least one side plate on the travel surface is located outside the orthographic projection of the body on the travel surface, so as to cut the grass on the side.

[0093] In this embodiment, at least one side plate may include a first side plate and a second side plate. In this case, the orthographic projection of the first side plate or the second side plate on the traveling surface is outside the orthographic projection of the machine body on the traveling surface. This means that the protection range of the cutter head cover in this working state is greater than the outer contour of the machine body. Therefore, the protection range of the cutter head cover can be expanded, thereby better blocking debris that splashes to the side during the mowing process, further improving the safety of the lawnmower operation, and protecting the operator and the surrounding environment from debris.

[0094] In addition to the technical problems solved by the embodiments of the present invention, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions as described above, other technical problems that can be solved by the blade cover and lawnmower provided by the embodiments of the present invention, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further explained in detail in the specific embodiments. Attached Figure Description

[0095] The above and other features and advantages of this invention will become more apparent from a detailed description of exemplary embodiments with reference to the accompanying drawings.

[0096] Figure 1 This is a schematic diagram of one embodiment of the cutter head cover provided by this utility model;

[0097] Figure 2 This is a schematic diagram of another embodiment of the cutter head cover provided by this utility model;

[0098] Figure 3 This is a structural schematic diagram of another embodiment of the cutter head cover provided by this utility model;

[0099] Figure 4 This is a structural schematic diagram of another embodiment of the cutter head cover provided by this utility model;

[0100] Figure 5 This is a schematic diagram of an embodiment of the tool disc cover and tool disc assembly provided by this utility model;

[0101] Figure 6This is a side view of one embodiment of the cutter head cover provided by this utility model;

[0102] Figure 7 This is a schematic diagram of one embodiment of the lawnmower provided by this utility model assembled with the blade cover in the first working state;

[0103] Figure 8 This is a schematic diagram of one embodiment of the lawnmower provided by this utility model, which is assembled with the blade cover in the second working state.

[0104] Explanation of reference numerals in the attached figures

[0105] 100. Cutter head cover; 110. Cutter head cover body; 111. Front opening; 112. Rear opening; 113. Side plate; 1131. First side plate; 1132. Second side plate; 114. Top surface; 1141. Mounting position; 1142. Mounting hole; 115. Accommodation space; 116. Maintenance window; 120. Protective structure; 121. Stop block; 1211. Threaded hole; 1212. Clearance surface; 130. Fastener; 140. Cutter head cover mounting hole; 150. Cutter head mounting hole; X. Forward direction; Y. Width direction of the machine body; Z. Height direction of the machine body; α. Clearance angle; 200. Cutter head; 210. Blade; 300. Lawn mower. Detailed Implementation

[0106] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary 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 the present invention will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0107] The features, structures, or characteristics described above can be combined in any suitable manner in one or more embodiments, and the features discussed in the various embodiments are interchangeable where possible. In the above description, numerous specific details are provided to give a full understanding of embodiments of the present invention. However, those skilled in the art will recognize that the technical solutions of the present invention can be practiced without one or more of the specific details described, or other methods, components, materials, etc., can be employed. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring various aspects of the present invention.

[0108] Although relative terms such as "up" and "down" are used in this invention to describe the relative relationship of one component of an icon to another, these terms are used only for convenience, such as according to the orientation of the examples shown in the accompanying drawings. It is understood that if the icon's arrangement is flipped so that it is upside down, the component described as "up" will become the component described as "down". Other relative terms such as "high", "low", "top", "bottom", "front", "back", "left", and "right" also have similar meanings. When a structure is "up" of another structure, it may mean that the structure is integrally formed on the other structure, or that the structure is "directly" mounted on the other structure, or that the structure is "indirectly" mounted on the other structure through another structure.

[0109] In this utility model, the terms "a", "an", "the", "the", and "at least one" are used to indicate the existence of one or more elements / components / etc.; the terms "comprising", "including", and "having" are used to indicate an open-ended meaning of inclusion and to mean that there may be other elements / components / etc. in addition to the listed elements / components / etc.

[0110] The various parts of the cutter head cover 100 provided in the embodiment of this utility model will now be described in detail with reference to the accompanying drawings:

[0111] refer to Figure 1 , Figure 2 and Figure 3 As shown, this utility model provides a blade cover 100 for a lawnmower 300, which can be a push lawnmower, an electric lawnmower, a fuel-powered lawnmower, an automatic lawnmower, etc.

[0112] In some implementations, reference Figures 1 to 5 As shown, the cutter head 200 can be positioned at the geometric center of the cutter head cover body 110. For example, a cutter head mounting hole 150 can be provided at the geometric center of the cutter head cover body 110. The cutter head mounting hole 150 is used for the output shaft of the cutter head 200 to pass through, that is, the shape of the cutter head mounting hole 150 is adapted to the shape of the output shaft of the cutter head 200. This utility model does not impose specific limitations. In addition, multiple cutter head cover mounting holes 140 can be provided near the geometric center of the cutter head cover body 110. They can be fixedly connected to the mounting positions reserved at the bottom of the lawnmower 300 body by bolts and nuts to realize the connection between the cutter head cover 100 and the lawnmower 300. This utility model does not impose specific limitations on the specific number and arrangement of the cutter head cover mounting holes 140. For example, four cutter head cover mounting holes 140 can be set, and the four cutter head cover mounting holes 140 are arranged in an array around the geometric center of the cutter head cover body 110. Of course, the number of mounting holes 140 on the cutter head cover can also be 6 or 8, and those skilled in the art can set it according to the actual situation.

[0113] refer to Figure 1 , Figure 2 and Figure 3 As shown, the cutter head cover 100 includes a cutter head cover body 110 and a protective structure 120. The cutter head cover body 110 is located at the bottom of the lawnmower 300. Here, the bottom of the lawnmower 300 is the side facing the travel surface when the lawnmower 300 is in use (i.e., in its normal operating position).

[0114] The shape and size of the blade cover body 110 can be customized according to the shape and size of the blade of the lawnmower 300. In some embodiments, refer to Figures 1 to 4 As shown, the blade cover body 110 has a front opening 111 and a rear opening 112 that are arranged opposite to each other in the forward direction X of the lawnmower 300. The front opening 111 can be the grass inlet end of the lawnmower 300 in the forward direction X, and the rear opening 112 can be the grass outlet end of the lawnmower 300 in the forward direction X.

[0115] refer to Figure 1 , Figure 2 and Figure 3 As shown, the width direction Y of the machine body is perpendicular to the forward direction X. At least one side plate 113 is also provided on the width direction Y of the lawnmower 300. The at least one side plate 113 can be one, provided on one side of the width direction Y of the machine body to form protection on one side of the lawnmower 300 body; or the at least one side plate 113 can be two, respectively provided on both sides of the width direction Y of the machine body to form protection on both sides of the lawnmower 300 body.

[0116] The protective structure 120 may be connected only to the front opening 111, or only to the rear opening 112, or both the front opening 111 and the rear opening 112. The protective structure 120 and at least one side plate 113 form a protective barrier.

[0117] In the width direction Y of the fuselage, the minimum distance between the protective structure 120 and at least one side plate 113 is less than 5cm. That is to say, when there is only one side plate 113, the minimum distance between the protective structure 120 and the side plate 113 is less than 5cm, and can be 4.5cm, 4cm, 3.5cm, 3cm, 2.5cm, 2cm, 1.5cm, or 1cm. This utility model does not make a specific limitation.

[0118] In some implementations, reference Figure 1 , Figure 2 and Figure 3As shown, the side plate 113 includes a first side plate 1131 and a second side plate 1132, respectively disposed on both sides of the machine body in the width direction Y. Further, the first side plate 1131 and the second side plate 1132 can be configured to form a symmetrical distribution in the width direction Y, and their relative positional relationship is achieved through a fixed connection or integral molding. In the width direction Y, the distance between the first side plate 1131 and the second side plate 1132 can cover the outer edge of the blade rotation area, and the distance range is set to 1.1 to 1.3 times the diameter of the blade 200. For example, in a lawnmower 300 with a body width of 50cm, the distance between the first side plate 1131 and the second side plate 1132 is set to 55cm. By adjusting the distance between the protective structure 120 and the side plate 113, the minimum gap of the protective barrier is controlled within 5cm, thereby limiting the entry path of foreign objects.

[0119] Specifically, the first side plate 1131 and the second side plate 1132 form rigid support structures on both sides of the machine body in the width direction Y. When the cutter head 200 rotates, grass clippings or foreign objects move outward under centrifugal force. The vertical walls of the first side plate 1131 and the second side plate 1132 directly block the splashing material, while the lateral shield formed by the protective structure 120 at the front or rear end further closes the opening area. The protective structure 120 can be selectively set at a minimum distance of less than 5cm from the first side plate 1131, or selectively set at a minimum distance of less than 5cm from the second side plate 1132.

[0120] In addition, refer to Figure 2 As shown, the protective structure 120 can also be designed to be adjustable in position relative to the cutter head cover body 110 in the width direction Y of the machine body, so as to change the distance between the protective structure 120 and at least one side plate 113. In some embodiments, the protective structure 120 can be designed to be connected to the cutter head cover body 110 via a slide rail assembly, the slide rail assembly including a guide groove extending in the width direction and a sliding block, the sliding block being movable along the guide groove and locked in different positions. As another embodiment, the protective structure 120 is connected to the cutter head cover body 110 by bolts, the cutter head cover body 110 having a plurality of mounting holes 1142 arranged in the width direction, the bolts being able to pass through different mounting holes 1142 to fix the protective structure 120. When the protective structure 120 moves, it causes the distance between its edge and the edge of the side plate 113 to change, the distance adjustment range being set to 3-8 cm. When the protective structure 120 moves toward the side plate 113, the distance between them decreases to 1-3 cm, at which point the cutter head 200 can cut close to the edge of the lawnmower 300. When the protective structure 120 moves in the opposite direction, the distance increases to 5-10 cm, forming a wider protective area to block flying debris.

[0121] In addition, refer to Figure 6As shown, the blade cover body 110 can also be designed to have a top surface 114 that is disposed opposite to the body height direction Z of the lawnmower 300. The top surface 114 is connected to the first side plate 1131 and the second side plate 1132. A receiving space 115 for accommodating the blade is formed between the top surface 114, the first side plate 1131, and the second side plate 1132. Here, in actual use, the top surface 114 is actually the side facing the ground.

[0122] In other words, the top surface 114 is configured to cover the area below the cutter head 200 in the height direction Z of the machine body, and is fixedly connected to the first side plate 1131 and the second side plate 1132 by welding or integral molding to form a three-sided enclosed receiving space 115, so as to restrict the path of foreign objects from the bottom and vertical direction into the receiving space 115.

[0123] The protective structure 120 includes at least one stop 121, one end of which is connected to the top surface 114 and the other end extends toward the receiving space 115.

[0124] The stop 121 can be configured as a plate or strip structure, with its length extending along the width direction Y of the fuselage. The connection position between the stop 121 and the top surface 114 can be located in the edge region of the top surface 114 near the side plate 113, for example, 1-3 cm away from the edge of the side plate 113, to cover the gap between the side plate 113 and the top surface 114.

[0125] In some implementations, reference Figure 4 As shown, multiple baffles 121 can be designed, with multiple baffles 121 arranged at intervals along the width direction Y of the machine body, and the gap between two adjacent baffles 121 forming a combing channel.

[0126] The number of baffles 121 can be 2, 3, 4, 5, etc., and this utility model does not impose a specific limitation. During the rotation of the cutter head 200, the grass clippings are thrown towards the side plate 113 of the cutter head cover 100 under the action of centrifugal force. At this time, the grass combing channel formed by the spaced baffles 121 allows the grass clippings to be discharged outward through the gaps. The gap width between adjacent baffles 121 can be set to 1cm to 3cm, for example, 1.1cm, 1.2cm, 1.3cm, 1.4cm, 1.5cm, 1.6cm, 1.7cm, 1.8cm, 2cm, 2.1cm, 2.2cm, 2.3cm, 2.4cm, 2.5cm, 2.6cm, 2.7cm, 2.8cm, 2.9cm, etc., which can not only prevent grass clippings from getting stuck in the channel, but also prevent foreign objects from entering the interior of the cutter head cover 100. When grass clippings enter the area between the side plate 113 and the stop block 121, the height advantage of the side plate 113 can prevent the grass clippings from splashing upwards. The combing channel can not only prevent the grass clippings from splashing, but also guide the grass clippings to the outside of the blade cover 100 (at this time, the combing channel is set at the rear opening 112), or comb the grass before it enters the blade cover 100 to prevent obstacles from entering the blade cover 100 (at this time, the combing channel is set at the front opening 111).

[0127] The connection between the stop block 121 and the top surface 114 can be detachable or non-detachable. In this embodiment of the invention, the connection between the stop block 121 and the top surface 114 is detachable, specifically it can be a magnetic connection, a snap-fit ​​connection, or a wedge-shaped locking connection.

[0128] refer to Figure 2 As shown, in order to make the position of the protective structure 120 relative to the cutter head cover body 110 adjustable in the width direction Y of the machine body, multiple mounting positions 1141 can be provided on the top surface 114, and the stop block 121 can be detachably connected to any mounting position 1141. This utility model does not specifically limit the detachable connection method between the mounting position 1141 and the stop block 121. For example, in some embodiments, the detachable connection between the stop block 121 and the mounting position 1141 can be a magnetic connection, a snap-fit ​​connection, or a wedge-shaped locking connection.

[0129] In this embodiment of the utility model, the detachable method of the stop 121 and the mounting position 1141 includes a threaded hole (not shown in the figure) provided on the stop 121, and a mounting hole 1142 adapted to the threaded hole provided on the mounting position 1141; the cutter head cover 100 also includes a fastener 130, which can pass through the mounting hole 1142 and can at least be screwed to the threaded hole.

[0130] Each mounting position 1141 is provided with at least one mounting hole 1142, and the stop block 121 is provided with a threaded hole. When the stop block 121 needs to be installed at the target mounting position 1141, it is only necessary to pass the fastener 130 through the mounting hole 1142 of the target position and at least be able to screw it into the threaded hole on the stop block 121.

[0131] When there are multiple mounting holes 1142, the multiple mounting holes 1142 correspond one-to-one with the multiple mounting positions 1141, and the multiple mounting holes 1142 are arranged at intervals along the width direction Y of the machine body so as to correspond with the scheme of multiple stops 121. At this time, each mounting hole 1142 is connected to a stop 121 so that the multiple stops 121 can be arranged at intervals along the width direction Y of the machine body.

[0132] The plurality of mounting holes 1142 include at least a first mounting hole 1142 and a second mounting hole 1142. The second mounting hole 1142 is located on the side of the first mounting hole 1142 away from the first side plate 1131. The distance between the first mounting hole 1142 and the first side plate 1131 is less than 2 cm, and the distance between the second mounting hole 1142 and the first side plate 1131 is less than 4 cm.

[0133] In other words, the distance between the first mounting hole 1142 and the first side plate 1131 can be 1cm, 1.1cm, 1.2cm, 1.3cm, 1.4cm, 1.5cm, 1.6cm, 1.7cm, 1.8cm, 1.9cm, etc. Since the second mounting hole 1142 and the first mounting hole 1142 are arranged at intervals along the width Y direction of the fuselage, and the distance between the second mounting hole 1142 and the first side plate 1131 is less than 4cm, it can be determined that the distance between the second mounting hole 1142 and the first side plate 1131 is also greater than 2cm. That is, the distance between the second mounting hole 1142 and the first side plate 1131 can be 2.5cm, 2.6cm, 2.7cm, 2.8cm, 2.9cm, 3cm, 3.1cm, 3.2cm, 3.3cm, 3.4cm, 3.5cm, 3.6cm, 3.7cm, 3.8cm, 3.9cm, etc.

[0134] In some implementations, reference Figure 6 As shown, the lengths of the first side plate 1131 and the second side plate 1132 in the height direction Z of the fuselage can also be designed to be greater than the length of the stop block 121 in the height direction Z of the fuselage.

[0135] Specifically, the extended portion of the side plate 113 can be designed to abut against the bottom of the lawnmower 300 body, covering the gap between the side of the blade disc 200 and the bottom of the lawnmower 300 body. This not only prevents side-splashed debris such as gravel from entering the receiving space 115, but also effectively prevents grass clippings from splashing out of the receiving space 115. Furthermore, the length of the stop 121, which is shorter than that of the first side plate 1131 and the second side plate 1132, ensures that it does not interfere with the lawnmower 300 body. The side plate 113 can be a straight plate or a C-shaped plate.

[0136] refer to Figure 4 and Figure 5 As shown, the stop 121 has an inclined clearance surface 1212 on the side facing the center of the cutter head cover body 110. The clearance surface 1212 forms a clearance angle α with the forward direction X of the lawnmower. The clearance angle α is used to guide grass clippings and avoid interference with the cutter head when it is working. Here, the center of the cutter head cover body 110 is the geometric center of the cutter head cover body 110. Generally, the cutter head 200 is located at the center of the cutter head cover body 110. The clearance angle α can be designed to be greater than 90 degrees and less than 180 degrees, for example, it can be 100 degrees, 110 degrees, 120 degrees, 130 degrees, 140 degrees, 150 degrees, 160 degrees, 170 degrees, etc. In order to achieve clearance and realize the protective function of the stop 121, preferably, the clearance angle can be between 120 and 150 degrees, for example, 120 degrees, 130 degrees, 140 degrees, 150 degrees, etc.

[0137] In addition, refer to Figures 1 to 5 As shown, the cutter head cover 100 also includes a maintenance window 116, which is opened on the top surface 114 so that the blades 210 in the cutter head can be at least partially exposed through the maintenance window 116. This invention does not specifically limit the exact location and size of the maintenance window 116. In some embodiments, to facilitate the inspection and maintenance of the blades 210 in the cutter head 200, the width of the maintenance window 116 can be designed to be greater than the width of the blades 210.

[0138] Considering that the maintenance window 116 and the protective structure 120 may interfere if they are set together, in order to prevent this phenomenon, one of the maintenance window 116 and the protective structure 120 can be set at the front opening 111 and the other at the rear opening 112.

[0139] For example, the protective structure 120 is disposed at the rear opening 112, and the maintenance window 116 is disposed at the front opening 111. However, considering that disposing of the protective structure 120 at the rear opening 112 would weaken its grass-gathering ability, in this embodiment of the invention, the maintenance window 116 is disposed at the rear opening 112, and the protective structure 120 is disposed at the front opening 111. The opening width of the front opening 111 is greater than the opening width of the rear opening 112, so that grass can enter the receiving space 115 from the front opening 111 over a large area and be gathered and discharged from the receiving space 115.

[0140] The maintenance window 116 can be constructed as a V-shape or a rectangle, preferably a U-shape, with the opening of the U-shape located away from the center of the cutter head cover body 110.

[0141] This utility model also provides a lawnmower 300, which can cut grass in areas such as family yards, park lawns, sports field lawns, farmland grasslands, and highway and railway slopes. Those skilled in the art can select the appropriate type of lawnmower 300 (such as push type, electric type, ride-on type, hay harvester, etc.) according to the specific scenario. This utility model does not impose any specific limitations.

[0142] Regardless of the type of lawnmower 300, the lawnmower 300 includes the aforementioned blade cover 100, the structure of which has been described in the above embodiments and will not be repeated here. Based on this, the blade cover 100 is movable relative to the lawnmower 300 body in the width direction Y.

[0143] In other words, the lawnmower 300 can have a first working state and a second working state, and the blade cover 100 can move relative to the lawnmower 300 body in the width direction Y. Here, the movement can be unidirectional or bidirectional. For example, when there is at least one side plate, the movement can be unidirectional. When at least one side plate includes a first side plate 1131 and a second side plate 1132, the movement can be unidirectional or bidirectional. Bidirectional movement means that the blade cover can move back and forth between the middle position and the left side position (one side of the width direction Y) of the body, or between the middle position and the right side position (the other side of the width direction Y). Unidirectional movement means that the blade cover can only move back and forth between the middle position and the left side position of the body, or only between the middle position and the right side position of the body. When the movement is unidirectional, refer to... Figure 7As shown, in the first working state, the cutter head cover 100 can be located on one side of the lawnmower 300 in the width direction Y. At this time, the orthographic projection of the first side plate 1131 or the second side plate 1132 on the traveling surface can be outside the orthographic projection of the body on the traveling surface, so as to achieve cutting of grass on one side. When the movement is bidirectional, the cutter head cover 100 can move simultaneously on one side and the other side of the lawnmower 300 in the width direction Y. The orthographic projections of the first side plate 1131 and the second side plate 1132 on the traveling surface can both be outside the orthographic projection of the body on the traveling surface, so as to achieve selective cutting of grass on both sides.

[0144] The second working state is the normal working state, see reference. Figure 8 As shown, at this time, the orthographic projections of the first side plate 1131 and the second side plate 1132 on the traveling surface are both located within the orthographic projection of the fuselage on the traveling surface.

[0145] Here, the traveling surface can be the ground, but is not limited to it. It should be noted that when the traveling surface is used as a reference surface for position definition in this utility model, the traveling surface is assumed to be a plane.

[0146] It should be understood that this invention is not limited to the detailed structure and arrangement of the components proposed in this invention. This invention can have other embodiments and can be implemented and performed in various ways. The foregoing variations and modifications fall within the scope of this invention. It should be understood that the invention disclosed and defined herein extends to all alternative combinations of two or more individual features mentioned or apparent in the text and / or drawings. All these different combinations constitute multiple alternative aspects of this invention. The embodiments described herein illustrate the best known mode for implementing this invention and will enable those skilled in the art to utilize this invention.

Claims

1. A blade cover for a lawnmower, characterized in that, The cutter head cover includes: The blade cover body is disposed at the bottom of the lawnmower body. The blade cover body has a front opening and a rear opening that are disposed opposite to each other in the forward direction of the lawnmower, and at least one side plate disposed in the width direction of the lawnmower body, the width direction of the body being perpendicular to the forward direction. A protective structure is connected to the front opening and / or the rear opening, and the protective structure and the at least one side plate form a protective barrier.

2. A blade cover for a lawnmower, characterized in that, The cutter head cover includes: The blade cover body is disposed at the bottom of the lawnmower body. The blade cover body has a front opening and a rear opening that are disposed opposite to each other in the forward direction of the lawnmower, and at least one side plate disposed in the width direction of the lawnmower body, wherein the width direction of the body is perpendicular to the forward direction. A protective structure is connected to the front opening and / or the rear opening, and the protective structure and the at least one side plate form a protective barrier. Wherein, in the direction of fuselage width, the minimum distance between the protective structure and the at least one side plate is less than 5cm.

3. A blade cover for a lawnmower, characterized in that, The cutter head cover includes: The blade cover body is disposed at the bottom of the lawnmower body. The blade cover body has a front opening and a rear opening that are disposed opposite to each other in the forward direction of the lawnmower, and at least one side plate disposed in the width direction of the lawnmower body, wherein the width direction of the body is perpendicular to the forward direction. A protective structure is connected to the front opening and / or the rear opening, and the protective structure and the at least one side plate form a protective barrier. The protective structure is adjustable relative to the cutter head cover body in the width direction of the machine body to change the distance between the protective structure and the at least one side plate.

4. The cutter head cover according to any one of claims 1 to 3, characterized in that, The side panels include a first side panel and a second side panel disposed opposite each other in the width direction of the lawnmower.

5. The cutter head cover according to claim 4, characterized in that, The blade cover body also has a top surface that is disposed opposite to the body height of the lawnmower. The top surface connects the first side plate and the second side plate, and a receiving space for accommodating the blade is formed between the top surface, the first side plate, and the second side plate. The protective structure includes at least one block, one end of which is connected to the top surface and the other end extends toward the accommodating space.

6. The cutter head cover according to claim 5, characterized in that, The number of the blocks is multiple, and the multiple blocks are arranged at intervals along the width direction of the machine body, with the gap between two adjacent blocks forming a combing channel.

7. The cutter head cover according to claim 6, characterized in that, The distance between two adjacent blocks is greater than or equal to 1 cm and less than or equal to 3 cm.

8. The cutter head cover according to claim 5, characterized in that, The lengths of the first side plate and the second side plate in the direction of fuselage height are both greater than the length of the stop block in the direction of fuselage height.

9. The cutter head cover according to claim 5, characterized in that, The stop block is detachably connected to the top surface.

10. The cutter head cover according to claim 5, characterized in that, The top surface is provided with multiple installation positions, and the stop block can be detachably connected to any of the installation positions.

11. The cutter head cover according to claim 10, characterized in that, The stop block is provided with a threaded hole, and the installation position is provided with an installation hole that matches the threaded hole; The cutter head cover also includes fasteners that can pass through the mounting hole and at least be screwed into the threaded hole.

12. The cutter head cover according to claim 11, characterized in that, There are multiple mounting holes, which are arranged at intervals along the width direction of the body.

13. The cutter head cover according to claim 12, characterized in that, The plurality of mounting holes include at least a first mounting hole and a second mounting hole, wherein the second mounting hole is located on the side of the first mounting hole away from the first side plate; The distance between the first mounting hole and the first side plate is less than 2cm; The distance between the second mounting hole and the first side plate is less than 4 cm.

14. The cutter head cover according to claim 5, characterized in that, The stop block has an inclined clearance surface on the side facing the center of the cutter head cover body. The clearance surface forms a clearance angle with the forward direction. The clearance angle is used to guide the grass clippings and avoid interference with the cutter head when it is working.

15. The cutter head cover according to claim 14, characterized in that, The avoidance angle is greater than 90 degrees and less than 180 degrees.

16. The cutter head cover according to claim 4, characterized in that, The blade cover body also has a top surface that is disposed opposite to the lawnmower body in the height direction. The top surface connects the first side plate and the second side plate, and a receiving space for accommodating the blade is formed between the top surface, the first side plate, and the second side plate. as well as A maintenance window is provided on the top surface so that the blades in the cutter head are at least partially exposed to the maintenance window.

17. The cutter head cover according to claim 16, characterized in that, The width of the maintenance window is greater than the width of the blade.

18. The cutter head cover according to claim 16, characterized in that, The maintenance window and the protective structure are respectively located at the front opening and the rear opening.

19. The cutter head cover according to claim 16, characterized in that, The maintenance window is located at the rear opening, and the protective structure is located at the front opening. The width of the front opening is greater than the width of the rear opening.

20. The cutter head cover according to claim 16, characterized in that, The maintenance window is constructed in a U-shape, with the opening of the U-shape located away from the center of the cutter head cover body.

21. A lawnmower, characterized in that, Includes the cutter head cover according to any one of claims 1 to 20.

22. The lawnmower according to claim 21, characterized in that, The blade cover is movable relative to the lawnmower body in the width direction of the body.

23. A lawnmower, characterized in that, Including the blade cover according to any one of claims 1-20, in the first working state of the lawnmower, the orthographic projection of the at least one side plate on the travel surface is located outside the orthographic projection of the body on the travel surface, so as to cut the grass on the side.

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