Blade dismounting structure and intelligent mower

Abstract

The present disclosure provides a blade dismounting structure and an intelligent mower, and belongs to the technical field of mowers, which comprises a base, an installation hole is arranged inside the base; a locking assembly, comprising a rotating locking piece, a head and a rod part connected with each other, the rod part is arranged in the installation hole, and the head and the periphery of the base jointly define a clamping space; wherein the locking assembly has a locking state and an unlocking state; when the locking assembly is in the locking state, the locking assembly is clamped with the base, and the blade is limited in the clamping space; when the locking assembly is in the unlocking state, the locking assembly has a first working condition and a second working condition; in the first working condition, the clamping state of the locking assembly with the base is released; in the second working condition, the locking assembly is entirely taken out of the installation hole, so that the blade can be separated from the clamping space. The blade dismounting structure provided by the present disclosure can quickly and easily complete the replacement of the blade.

Description

Technical Field

[0001] This disclosure relates to the field of lawnmower technology, and more particularly to a blade disassembly and assembly structure and an intelligent lawnmower. Background Technology

[0002] Traditional lawnmower blades are typically secured using a combination of nuts and bolts. While this method ensures blade stability during operation, it presents several inconveniences. In practice, users need to use tools (such as wrenches) to tighten the nuts to ensure the blade is securely attached to the lawnmower's blade head. However, this installation method is cumbersome, especially when frequent blade changes are required. It is not only time-consuming and labor-intensive but also prone to safety hazards due to improper operation, such as cuts caused by improper tool use during disassembly and installation.

[0003] Some related technologies include blade assembly / disassembly structures designed to enable quick installation and removal of blades via quick-release components. However, these quick-release components involve multiple parts, requiring each part to be installed or removed individually, making the process cumbersome. Utility Model Content

[0004] To overcome the problems existing in related technologies, this manual provides a blade disassembly and assembly structure and an intelligent lawnmower, which allows users to quickly and accurately replace the blades.

[0005] According to a first aspect of this disclosure, a blade detachment structure is provided for connecting a blade to the blade disc of a smart lawnmower, the smart lawnmower being capable of traveling on a surface, comprising:

[0006] The base has a through mounting hole that extends along a first direction;

[0007] A locking assembly is detachably inserted into the mounting hole. The locking assembly includes a rotating locking member, which has a head and a rod connected to each other. The head is located on one side of the rod in the first direction. The outer perimeter of the head is larger than the outer perimeter of the rod. The rod passes through the mounting hole, and the head protrudes from the mounting hole and, together with the perimeter of the base, defines a clamping space.

[0008] The locking component has a locked state and an unlocked state;

[0009] When the locking component is in the locked state, the locking component engages with the base, and the blade is confined within the clamping space;

[0010] When the locking component is in the unlocked state, the locking component has a first working condition and a second working condition. In the first working condition, the locking component is released from the engagement with the base, the rotating locking member can rotate within the mounting hole, and the locking component can move relative to the base in the first direction within the mounting hole. In the second working condition, the locking component is completely disengaged from the mounting hole, allowing the blade to separate from the clamping space.

[0011] The blade assembly / disassembly structure disclosed herein, through the snap-fit ​​design between the locking component and the base, forms a stable physical limit in the locked state, firmly confining the blade within the clamping space. Specifically, the second working condition of switching the locking component from the locked state to the unlocked state requires two processes: rotation and movement along the first direction. The rotation path and the movement path along the first direction are separated. This separated path design limits the axial movement of the rotating locking component in the locked state to within ±0.2mm, which is significantly reduced compared to the movement of traditional single-path quick-release structures, and significantly improves the positioning accuracy and stability of the blade under high-speed rotation conditions.

[0012] Secondly, when the locking component switches to the second working state of unlocking, it can be completely disengaged from the mounting hole, realizing the rapid separation of the blade from the base. This design allows users to apply force with only one hand during the disengagement process, and the entire separation action takes less than 3 seconds, which greatly simplifies the blade disassembly process, allowing users to quickly and easily replace the blade without the aid of any tools.

[0013] In addition, since the mounting hole is a through hole, the mounting hole of the base is fully open when the locking component is completely removed, which makes it easy for users to rinse the residual dirt in the hole. This allows the quick-release function of the entire structure to maintain more than 95% of its initial effectiveness after being repeatedly disassembled and reassembled more than 500 times.

[0014] In some exemplary embodiments of this disclosure, the ratio of the size of the head in the first direction to the size of the base in the first direction is greater than 0 and less than or equal to 1:6;

[0015] When the locking assembly is in the locked state, the distance between the head end face and the travel surface is less than the distance between the rod end face and the travel surface;

[0016] In the second operating condition, the locking assembly as a whole disengages from the mounting hole on the side of the base near the head, allowing the blade to separate from the clamping space.

[0017] In this type of embodiment, the operating space layout of the quick-release structure is reconstructed by limiting the release direction of the locking component to the side of the base closer to the head (i.e., below the blade disc). Traditional quick-release components need to be removed from above the blade disc, but the distance between the blade disc and the chassis of a smart lawnmower is usually small, resulting in limited operating space above the blade disc and significant interference with the machine body during disassembly. This solution, however, uses a path design that allows the rotating locking component to move vertically (perpendicular to the travel plane) away from the machine body during disassembly. This utilizes the naturally large maintenance gap below the machine chassis to separate the locking component from the base, reducing the probability of blade interference with the machine body during disassembly.

[0018] Furthermore, by restricting the locking assembly from disengaging from below the cutter head, space above the cutter head is freed up to some extent, allowing most of that space to be used for integrating the blade assembly / removal structure. This places most of the blade assembly / removal structure above the cutter head, reducing its size below the cutter head. This design, combined with restrictions on the dimensions of the head and base in the first direction, effectively prevents the blade assembly / removal structure from colliding with obstacles on the travel surface, protecting it from damage and ensuring smooth mowing operations.

[0019] In some exemplary embodiments of this disclosure, one of the outer wall of the rod and the wall of the mounting hole is provided with a locking protrusion that is fixedly connected to the rotary locking member or the base, and the other is provided with a slot for the locking protrusion to be inserted.

[0020] The slot includes a locking slot and an unlocking slot, and the locking slot and the unlocking slot are connected.

[0021] When the rotating locking member rotates within the mounting hole, it enables the locking protrusion to switch between the locking groove and the unlocking groove;

[0022] When the locking assembly is in the locked state, the locking protrusion is located in the locking groove;

[0023] In the first operating condition, the locking protrusion switches from the locking groove to the unlocking groove and can move along the first direction within the unlocking groove; in the second operating condition, the locking protrusion slides out of the unlocking groove so that the locking assembly is completely disengaged from the mounting hole.

[0024] In this type of embodiment, the locking and unlocking slots further optimize the function of the locking assembly. The locking slot secures the locking protrusion in the locked state, ensuring the blade is firmly contained within the clamping space and preventing it from loosening or falling off during operation. The unlocking slot provides a path for the locking protrusion to switch from the locked to the unlocked state, allowing it to move along the unlocking slot in the unlocked state, thereby enabling the entire locking assembly to disengage. This design not only improves the reliability of the locking assembly but also ensures smooth blade installation and removal.

[0025] The locking lug is fixedly connected to the rotating locking component or base. This fixed connection ensures the relative positional stability and structural rigidity between the locking lug and the rotating locking component or base. During blade installation and use, the locking lug will not shift or loosen due to external forces, thus guaranteeing the reliability of the locked state. In the unlocked state, the fixedly connected locking lug provides stable motion guidance for the rotating locking component. When the rotating locking component rotates within the mounting hole, the locking lug slides smoothly along the connecting path between the locking and unlocking slots, allowing the rotating locking component to smoothly switch from the locked to the unlocked state, or vice versa. This stable motion guidance reduces jamming and resistance during operation, lowers the risk of jamming due to improper component fit, and improves the efficiency and reliability of blade installation and removal.

[0026] In some exemplary embodiments of this disclosure, the locking protrusion is fixedly connected to the outer wall of the rod, and the slot is formed in the wall of the mounting hole;

[0027] The unlocking groove is open on the side facing the head, so that in the second working condition, the locking protrusion slides out from the unlocking groove;

[0028] The locking groove is closed on the side facing the head, so that when the locking component is in the locked state, the locking component engages with the base and is confined within the mounting hole.

[0029] In this type of embodiment, the locking protrusion is designed as a locking protrusion fixedly connected to the outer wall of the rotating locking member, while the slot is formed in the wall of the mounting hole. This design makes the structure of the locking assembly simpler and easier to manufacture, while also optimizing the switching process of the locking assembly in the locked and unlocked states.

[0030] Specifically, in the locked state, the locking protrusion is located within the locking groove, forming a stable engagement with the base. This ensures the blade is securely restrained within the clamping space, preventing it from loosening or falling off even during high-speed rotation, thus guaranteeing the safe operation of the lawnmower. When blade removal is required, rotating the locking mechanism allows the locking protrusion to move along the connecting path between the locking and unlocking grooves, switching from the locking groove to the unlocking groove. It then moves within the unlocking groove in the first direction and finally slides out, achieving complete disengagement of the locking assembly. This allows the blade to be quickly and smoothly separated from the clamping space.

[0031] Furthermore, the unlocking slot has an open opening on the side facing the head, a design that facilitates the smooth disengagement of the locking protrusion in the unlocked state, further improving the convenience and reliability of blade assembly and disassembly. Conversely, the locking slot has a closed opening on the side facing the head, a design that ensures a secure engagement between the locking component and the base in the locked state, effectively preventing accidental loosening due to external forces and enhancing the stability and safety of the entire blade assembly and disassembly structure.

[0032] In some exemplary embodiments of this disclosure, the locking protrusion is fixedly connected to the wall of the mounting hole, and the slot is formed on the outer wall of the rod.

[0033] The unlocking groove is open on the side away from the head, so that the locking protrusion slides out of the unlocking groove in the second working condition;

[0034] The locking groove is closed on the side away from the head, so that when the locking component is in the locked state, the locking component engages with the base and is confined within the mounting hole.

[0035] In this type of embodiment, the locking protrusion is fixedly connected to the wall of the mounting hole, while the slot is formed on the outer wall of the rotating locking member. This design also makes the structure of the locking assembly simpler and easier to manufacture, while also optimizing the switching process between the locked and unlocked states of the locking assembly.

[0036] Specifically, in the locked state, the locking protrusion is located within the locking groove, forming a stable engagement with the rotating locking component, thereby firmly confining the blade within the clamping space and ensuring the blade's stability during lawnmower operation. When blade removal is required, by rotating the rotating locking component, the locking protrusion can switch from the locking groove to the unlocking groove along the connecting path between the locking and unlocking grooves, and move within the unlocking groove in the first direction, ultimately sliding out of the unlocking groove to achieve complete disengagement of the locking assembly and complete the rapid removal of the blade.

[0037] Furthermore, the unlocking slot has an open opening on the side furthest from the head, a design that facilitates the smooth disengagement of the locking protrusion in the unlocked state, improving the ease of blade assembly and disassembly. Conversely, the locking slot has a closed opening on the side furthest from the head, a design that ensures a secure engagement between the locking component and the base in the locked state, effectively preventing accidental loosening due to external forces and enhancing the stability and safety of the entire blade assembly and disassembly structure.

[0038] In some exemplary embodiments of this disclosure, the locking groove and the unlocking groove are connected by a sliding groove;

[0039] When the rotary locking member rotates within the mounting hole, the locking protrusion can slide along the sliding groove to switch between the locking groove and the unlocking groove.

[0040] In this type of embodiment, by setting a sliding groove to connect the locking groove and the unlocking groove, the locking protrusion can smoothly and easily switch between the locking groove and the unlocking groove along the sliding groove when the rotating locking member rotates, which further optimizes the switching process of the locking component and reduces the friction and wear between the locking protrusion and the slot.

[0041] In some exemplary embodiments of this disclosure, the locking assembly further includes an unlocking pin abutting between the rotary locking member and the base, one end of the unlocking pin elastically abutting against the rotary locking member, and the other end exposed at the opening of the mounting hole away from the head;

[0042] Pressing one end of the unlocking pin exposed at the mounting hole opening switches the locking assembly from the locked state to the unlocked state.

[0043] In the first operating condition, the locking assembly is released from the engagement with the base, the rotating locking member can drive the unlocking pin to rotate in the mounting hole, and the locking assembly can move relative to the base in the first direction within the mounting hole; in the second operating condition, the locking assembly is completely disengaged from the mounting hole, allowing the blade to separate from the clamping space.

[0044] In this type of embodiment, the design of the unlocking pin plays a crucial role. The unlocking pin abuts against the rotating locking element and the base, with one end elastically abutting against the rotating locking element and the other end exposed in the mounting hole away from the head. This design allows the user to easily switch the state of the locking assembly by pressing the unlocking pin.

[0045] In some exemplary embodiments of this disclosure, the unlocking pin is circumferentially limited to the rotary locking member to restrict the rotation of the unlocking pin relative to the rotary locking member;

[0046] When the locking component is in the locked state, the unlocking pin engages with the base in a circumferential limiting manner to restrict the unlocking pin from rotating relative to the base;

[0047] Pressing one end of the unlocking pin exposed at the mounting hole releases the circumferential limiting engagement between the unlocking pin and the base, and the locking assembly switches from the locked state to the unlocked state.

[0048] In this type of embodiment, the stability and reliability of the locking assembly in the locked state are further improved by setting a circumferential limiting fit between the unlocking pin and the rotating locking component and the base. In the locked state, the circumferential limiting fit between the unlocking pin and the base can effectively prevent the locking assembly from rotating or loosening due to external forces, ensuring the stability of the blade during operation. Pressing the end of the unlocking pin exposed at the mounting hole can release the circumferential limiting fit between the unlocking pin and the base, allowing the locking assembly to smoothly switch to the unlocked state. This design makes the unlocking operation more reliable and accurate, avoiding accidental loosening or detachment of the blade due to misoperation or external interference, and improving the safety and stability of the blade assembly and disassembly structure.

[0049] In some exemplary embodiments of this disclosure, the wall of the mounting hole is provided with an abutment block, and the unlocking pin is provided with an abutment platform;

[0050] When the locking component is in the locked state, the unlocking pin abuts against the abutting platform through the abutting block, and the contact surface between the abutting block and the abutting platform forms a first locking surface to restrict the unlocking pin from rotating relative to the base;

[0051] Pressing one end of the unlocking pin exposed at the opening of the mounting hole causes the abutment block to disengage from the abutment platform. The rotating locking member drives the unlocking pin to rotate within the mounting hole, and the locking assembly switches from the locked state to the unlocked state.

[0052] In this type of embodiment, the mounting hole wall is provided with an abutment block, and the unlocking pin is provided with an abutment platform. When the locking assembly is in the locked state, the unlocking pin abuts against the abutment platform through the abutment block, and the contact surfaces of the abutment block and the abutment platform form a first locking surface, thereby restricting the rotation of the unlocking pin relative to the base. This design is simple in structure, requires no additional components, and only the contact surfaces of the abutment block and the abutment platform are needed to restrict the relative movement of the locking assembly with respect to the base in the locked state, preventing accidental loosening due to external forces and enhancing the stability and reliability of the entire structure.

[0053] When unlocking is required, pressing the end of the unlocking pin exposed at the mounting hole opening disengages the abutment block from the abutment platform. Rotating the locking component causes the unlocking pin to rotate within the mounting hole, thus enabling a quick switch between the locked and unlocked states of the locking assembly. This design not only improves operational convenience but also reduces friction and wear during the unlocking process, extending the service life of the components.

[0054] In some exemplary embodiments of this disclosure, the rotary locking member is provided with an installation channel, the installation channel is provided with a limiting block, and the unlocking pin is provided with a limiting groove adapted to the limiting block;

[0055] The unlocking pin is installed and limited within the installation channel by the limiting block and the limiting groove, so that when the locking assembly is in the unlocked state, the rotating locking member and the unlocking pin can be separated from the base together.

[0056] The contact surface between the limiting block and the limiting groove forms a second engaging surface to restrict the unlocking pin from rotating relative to the rotating locking member.

[0057] In this type of embodiment, the internal structure of the locking assembly is optimized by providing an installation channel within the rotary locking member and a limiting block within the installation channel. The unlocking pin has a limiting groove that matches the limiting block. The unlocking pin is mounted and limited within the installation channel by the limiting block and the limiting groove. This design ensures a secure connection between the unlocking pin and the rotary locking member, allowing the locking assembly to be completely disengaged from the mounting hole in the unlocked state, achieving rapid separation of the blade from the base.

[0058] The contact surface between the limiting block and the limiting groove forms a second locking surface, further restricting the rotation of the unlocking pin relative to the rotating locking component. This optimizes the movement state and positional relationship of the unlocking pin, making the unlocking operation more accurate and reliable. Furthermore, this design reduces the number and complexity of parts, lowers manufacturing costs and assembly difficulty, and improves production efficiency.

[0059] In some exemplary embodiments of this disclosure, when the locking component is in a locked state, the first latching surface and the second latching surface are coplanar.

[0060] In this type of embodiment, when the locking assembly is in the locked state, the first and second engaging surfaces are coplanar. This design makes the force distribution among the components of the locking assembly more uniform and reasonable in the locked state, reducing the risk of component damage or deformation due to excessive local stress, and further improving the stability and reliability of the locking assembly. Specifically, in the locked state, the locking assembly needs to withstand certain external forces (such as the rotational force of the blade, vibration, etc.). If the two engaging surfaces are not coplanar, it may lead to excessive local stress, thereby affecting the service life of the components.

[0061] In some exemplary embodiments of this disclosure, the unlocking pin is further provided with a first boss, and the mounting hole is provided with a second boss. The unlocking pin completes the contact with the base through the stepped engagement of the first boss and the second boss.

[0062] In this type of embodiment, the unlocking pin abuts against the base through a stepped engagement of the first and second bosses. This design not only enhances the connection stability between the unlocking pin and the base but also provides clear assembly positioning through the stepped engagement, ensuring the positional accuracy of the unlocking pin during installation and use. Furthermore, the stepped engagement design optimizes the connection between the unlocking pin and the base, making the locking and unlocking process more compact and reducing structural complexity.

[0063] In some exemplary embodiments of this disclosure, the locking component further includes:

[0064] An elastic element is elastically engaged between the unlocking pin and the rotary locking element;

[0065] When the locking component is in the locked state, the elastic element is in the compressed state.

[0066] In this type of embodiment, an elastic element is further introduced into the locking assembly, which elastically abuts against the unlocking pin and the rotating locking member. In the locked state, the compressed elastic element provides continuous elastic support to the unlocking pin. This design not only enhances the stability of the locking assembly in the locked state but also assists the unlocking pin's movement during the unlocking process through the elastic restoring force of the elastic element. This provides the user with a noticeable springy feel when pressing the unlocking pin, enhancing the user's sense of control over the operation and reducing the risk of component damage or functional failure due to improper operation.

[0067] In some exemplary embodiments of this disclosure, the elastic member passes through the mounting channel, and the unlocking pin passes at least partially through the elastic member.

[0068] In this type of embodiment, the installation method of the elastic element is refined, allowing it to pass through the installation channel of the rotary locking element, with the unlocking pin at least partially passing through the elastic element. This design not only optimizes the installation position of the elastic element, ensuring its stable function during operation, but also reduces mutual interference between components through a reasonable structural layout. This compact installation method improves the integration of the entire locking assembly, making the blade disassembly and assembly structure more compact, especially suitable for intelligent lawnmower robots with limited bottom space.

[0069] In some exemplary embodiments of this disclosure, the mounting channel extends through the rod and the head, and the locking assembly further includes:

[0070] A limiting component is detachably connected to the opening of the mounting channel away from the rod and closes the opening.

[0071] In this type of embodiment, the structure of the locking assembly is further optimized by providing a limiting member at the opening of the mounting channel away from the first end. The limiting member is detachably connected to and closes the mounting channel opening. This design not only prevents accidental detachment of the elastic element and other internal components during use but also provides additional structural stability. The detachable design of the limiting member makes the replacement and maintenance of internal components more convenient, further improving the reliability and maintainability of the entire blade assembly and disassembly structure.

[0072] Furthermore, the detachable design of the limiting component offers another significant advantage: ease of cleaning the installation channel. In practical use, the blade disassembly structure may accumulate dust, dirt, or other debris over time. This buildup can affect the normal operation of the locking assembly, reducing its performance and reliability. By disassembling the limiting component, users can easily clean the installation channel, removing accumulated debris and ensuring the cleanliness and smooth operation of the locking assembly's internal components.

[0073] In some exemplary embodiments of this disclosure, the maximum distance between the head end face and the blade in the first direction is less than 1 / 4 of the maximum distance between the exposed end face of the unlocking pin and the blade in the first direction.

[0074] In this type of embodiment, this design effectively prevents the blade assembly / disassembly structure from colliding with obstacles on the travel surface during movement. By properly controlling the size and positional relationship between the rotating locking element and the unlocking pin, it can be ensured that the blade assembly / disassembly structure has sufficient space to avoid obstacles during movement, thereby reducing the risk of damage due to collisions. Moreover, with this layout, most of the structure in the locking assembly can be located between the blade and the end face of the unlocking pin, which greatly reduces the risk of damage to the locking assembly even if the blade assembly / disassembly structure collides with obstacles on the travel surface during the lawnmower's movement.

[0075] In some exemplary embodiments of this disclosure, the outer diameter of the head near the mounting hole is larger than the diameter of the mounting hole near the opening of the head.

[0076] In this type of embodiment, by limiting the outer diameter of the head near the mounting hole to be larger than the diameter of the mounting hole near the head opening, the head can cover the mounting hole in the locked state. This design effectively prevents grass clippings, dust, and other debris from entering the mounting hole, avoiding jamming or damage to the locking assembly and affecting the normal disassembly and use of the blade.

[0077] In some exemplary embodiments of this disclosure, the rotation axis of the rotary locking member within the mounting hole is coaxially arranged with the center line of the mounting hole.

[0078] In this type of embodiment, by defining the rotation axis of the rotary locking member within the mounting hole as coaxial with the center line of the mounting hole, the motion accuracy of the rotary locking member is further optimized. This design ensures the smoothness and accuracy of the rotary locking member during rotation, reducing the risk of component wear and functional failure caused by eccentric rotation.

[0079] According to a second aspect of this disclosure, a smart lawnmower is provided, capable of traveling on a surface, comprising:

[0080] Cutter head;

[0081] The drive component drives the cutter head to rotate;

[0082] The blade assembly / disassembly structure as described in the first aspect is connected to the cutter head and is used to fix the blade to the cutter head.

[0083] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this specification. Attached Figure Description

[0084] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this specification and, together with the description, serve to explain the principles of this specification.

[0085] Figure 1 This is a schematic diagram of the structure of an intelligent lawnmower in an exemplary embodiment of this disclosure.

[0086] Figure 2 This is a schematic cross-sectional view of the blade assembly / disassembly structure in an exemplary embodiment of this disclosure.

[0087] Figure 3 This is an exploded view of the blade assembly / disassembly structure in an exemplary embodiment of this disclosure.

[0088] Figure 4 This is an exploded structural diagram showing a partial cross-section of the blade assembly / disassembly structure in an exemplary embodiment of this disclosure.

[0089] Figure 5 This is a schematic diagram of the rotating locking component structure in an exemplary embodiment of this disclosure.

[0090] Figure 6 This is a schematic diagram of the base structure in an exemplary embodiment of this disclosure.

[0091] Figure 7 This is a schematic diagram of the unlocking pin structure in an exemplary embodiment of this disclosure.

[0092] Figure 8 This is another cross-sectional schematic diagram of the blade assembly / disassembly structure in an exemplary embodiment of this disclosure.

[0093] Figure 9 This is a schematic diagram of the blade assembly / disassembly structure connected to the cutter head in an exemplary embodiment of this disclosure.

[0094] Explanation of reference numerals in the attached figures

[0095] 10-Blade quick-release assembly; 20-Blade; 30-Blade disc; 100-Base; 110-Slot; 111-Locking groove; 112-Unlocking groove; 113-Sliding groove; 120-Mounting hole; 121-Abutting block; 122-Second boss; 200-Locking assembly; 210-Rotating locking element; 211-Locking protrusion; 212-Mounting channel; 2121-Limiting block; 213-Head; 214-Ring; 220-Unlocking pin; 221-Abutting platform; 222-Limiting groove; 223-First boss; 230-Elastic element; 240-Limiting element; Y-First direction. Detailed Implementation

[0096] 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, they are provided so that this disclosure 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 detailed descriptions of them will be omitted. Furthermore, the drawings are merely illustrative of this disclosure and are not necessarily drawn to scale.

[0097] Although relative terms such as "up" and "down" are used in this specification 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 device of the icon is flipped upside down, the component described as "up" will become the component described as "down." 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.

[0098] The terms “a,” “one,” “the,” “the,” and “at least one” are used to indicate the presence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended inclusion and to mean that there may be other elements / components / etc. in addition to the listed elements / components / etc.; the terms “first,” “second,” and “third,” etc., are used only as markers and are not a limitation on the number of objects.

[0099] In this disclosure, terms such as "perpendicular" and "equal" refer to perpendicularity and equality within the range of process error, not absolute perpendicularity and equality. Process error can be within ±10% or ±5%. For example, if two directions are perpendicular, it can be understood that the angle between the two directions can be 90° ± 5°.

[0100] like Figures 1 to 4 As shown, this disclosure provides a blade removal and mounting structure 10 for connecting a blade 20 to a blade disc 30. The blade disc 30 can be used in a smart lawnmower, which can travel on a surface, which can be the ground, but is not limited to this. The blade removal and mounting structure 10 includes a base 100 and a locking assembly 200. The base 100 can be connected to the blade disc 30, and the locking assembly 200 can connect the blade 20 to the blade disc 30 or remove the blade 20 from the blade disc 30 through cooperation with the base 100.

[0101] The blade assembly / disassembly structure 10 provided in this embodiment will now be described in detail with reference to the accompanying drawings:

[0102] like Figures 1 to 4 As shown, the blade assembly / disassembly structure 10 provided in this disclosure includes a base 100 and a locking assembly 200. A mounting hole 120 is provided through the interior of the base 100, extending along a first direction Y. The mounting hole 120 is a through hole. Specifically, the base 100 may include a top surface and a bottom surface opposite to each other in the first direction Y, and the mounting hole 120 penetrates both the top and bottom surfaces of the base 100. The mounting hole 120 may be approximately cylindrical. The base 100 may also be approximately cylindrical, and the base 100 can be connected to the blade disc 30.

[0103] The locking assembly 200 is detachably inserted into the mounting hole 120. The locking assembly 200 includes a rotary locking member 210, which has a head 213 and a rod 214 connected to each other. The head 213 is located on one side of the rod 214 in a first direction Y. The outer periphery of the head 213 is larger than that of the rod 214. The rod 214 passes through the mounting hole 120, and the head 213 protrudes from the mounting hole 120, defining a clamping space together with the periphery of the base 100. The locking assembly 200 can be used to mount the blade 20 onto or remove it from the cutter head 30 through its engagement with the base 100.

[0104] Optionally, the locking assembly 200 has a locked state and an unlocked state. When the locking assembly 200 is in the locked state, it engages with the base 100, and the blade 20 is confined within the clamping space. When the locking assembly 200 is in the unlocked state, it has a first working condition and a second working condition.

[0105] In the first operating condition, the locking assembly 200 is released from the engagement with the base 100, allowing the rotary locking member 210 to rotate within the mounting hole 120, and the locking assembly 200 to move relative to the base 100 in the first direction Y within the mounting hole 120. The rotation axis of the rotary locking member 210 within the mounting hole 120 can be coaxially arranged with the center line of the mounting hole 120.

[0106] In the second operating condition, the locking assembly 200 is completely disengaged from the mounting hole 120, and the blade 20 can be separated from the clamping space. It should be noted that the locking assembly 200 may include multiple components. Except for the rotary locking member 210, the other components of the locking assembly 200 can be disengaged from the mounting hole 120 together with the rotary locking member 210.

[0107] In some embodiments of this disclosure, such as Figure 2 As shown, the ratio of the dimension H1 of the head 213 in the first direction Y to the dimension H2 of the base 100 in the first direction Y is greater than 0 and less than or equal to 1:6. Specifically, the ratio of H1 to H2 can be 1:6, 1:6.1, 1:6.2, 1:6.3, 1:6.4, 1:6.5, 1:6.6, or 1:7, but is not limited to these. Optionally, the rotating locking member 210 can be generally T-shaped.

[0108] When the locking assembly 200 is in the locked state, the blade 20 is confined within the clamping space, and the distance between the end face of the head 213 and the traveling surface is less than the distance between the end face of the rod 214 and the traveling surface. In the second operating condition, the locking assembly 200 as a whole disengages from the mounting hole 120 on the side of the base 100 near the head 213, allowing the blade 20 to separate from the clamping space. A through hole may be provided on the blade 20, through which the blade 20 can be fitted onto the base 100 or the rotating locking member 210.

[0109] In this disclosure, the mating relationship between the rotary locking member 210 and the base 100 can be varied. For example... Figures 3 to 6 As shown, the outer wall of the rod portion 214 and the wall of the mounting hole 120 each have a locking protrusion 211 fixedly connected to the rotary locking member 210 or the base 100, and a slot 110 for the locking protrusion 211 to be inserted into. It should be noted that the locking protrusion 211 is fixedly connected to the corresponding base 100 or rotary locking member 210, and this fixed connection can be achieved by welding, riveting, or an integrated design. Preferably, the locking protrusion 211 and the corresponding base 100 or rotary locking member 210 can be an integrated design.

[0110] like Figure 5 and Figure 6As shown, slot 110 includes a locking slot 111 and an unlocking slot 112, which are connected. When the rotating locking member 210 rotates within the mounting hole 120, the locking protrusion 211 can switch between the locking slot 111 and the unlocking slot 112. When the locking assembly 200 is in the locked state, the locking protrusion 211 is located within and confined to the locking slot 111, thereby confining the blade 20 within the clamping space.

[0111] Rotating the rotating locking member 210 switches the locking assembly 200 from the locked state to the unlocked state. In the unlocked state, the locking assembly 200 has two operating conditions. In the first operating condition, the locking protrusion 211 switches from the locking groove 111 to the unlocking groove 112 and can move along the first direction Y within the unlocking groove 112; in the second operating condition, the locking protrusion 211 slides out from the unlocking groove 112, so that the entire locking assembly 200 is disengaged from the mounting hole 120.

[0112] The locking protrusion 211 may be provided on the rotary locking member 210 or the base 100, and this disclosure does not limit this. For example, in one embodiment, such as Figure 2 and Figure 5 As shown, the locking protrusion 211 is fixedly connected to the outer wall of the rod portion 214, and the slot 110 is formed in the wall of the mounting hole 120. The unlocking groove 112 is open on the side facing the head 213 so that, in the second working condition, the locking protrusion slides out of the unlocking groove 112. The locking groove 111 is closed on the side facing the head 213 so that when the locking assembly 200 is in the locked state, the locking protrusion 211 is limited in the locking groove 111, the locking assembly 200 is engaged with the base 100, and the locking assembly 200 is confined within the mounting hole 120.

[0113] Optionally, there can be multiple locking protrusions 211, and correspondingly, there can also be multiple slots 110. For example, there are two locking protrusions 211, symmetrically distributed on the outer wall of the rod portion 214, and two slots 110, corresponding one-to-one with the locking protrusions 211. The shape of the locking protrusions 211 can be various, such as a block structure or a hook-shaped structure; this disclosure does not limit this. The depth and width of the slots 110 can be designed according to the dimensions of the locking protrusions 211.

[0114] In another embodiment, the locking protrusion 211 is fixedly connected to the wall of the mounting hole 120 (not shown), and the slot 110 is formed on the outer wall of the rod portion 214. The unlocking groove 112 is open on the side away from the head 213 so that, in the second working condition, the locking protrusion 211 slides out of the unlocking groove 112. The locking groove 111 is closed on the side away from the head 213 so that when the locking assembly 200 is in the locked state, the locking assembly 200 engages with the base 100, and the locking assembly 200 is confined within the mounting hole 120.

[0115] Similarly, in this embodiment, the number of locking protrusions 211 can also be multiple, and correspondingly, the number of slots 110 can also be multiple. For example, there are two locking protrusions 211, symmetrically distributed on the wall of the mounting hole 120, and two slots 110, corresponding one-to-one with the locking protrusions 211. The shape of the locking protrusions 211 can be various, such as a block structure or a hook-shaped structure; this disclosure does not limit this. The depth and width of the slots 110 can be designed according to the dimensions of the locking protrusions 211.

[0116] Furthermore, such as Figure 6 As shown, the locking groove 111 and the unlocking groove 112 are connected by a sliding groove 113. When the rotating locking member 210 rotates within the mounting hole 120, the locking protrusion 211 can slide along the sliding groove 113 to switch between the locking groove 111 and the unlocking groove 112, thus completing the switching of the locking assembly 200 between the locked and unlocked states. The sliding groove 113 can be a horizontal groove or an irregularly shaped groove; this disclosure does not limit its application.

[0117] In some embodiments of this disclosure, such as Figures 2 to 4 , Figure 7 As shown, the locking assembly 200 also includes an unlocking pin 220, which abuts against the rotary locking member 210 and the base 100. One end of the unlocking pin 220 elastically abuts against the rotary locking member 210, and the other end is exposed at the opening of the mounting hole 120 away from the head 213. Pressing the end of the unlocking pin 220 exposed at the opening of the mounting hole 120 switches the locking assembly 200 from the locked state to the unlocked state.

[0118] Furthermore, when the locking assembly 200 switches from the locked state to the unlocked state, in the first working condition, the locking assembly 200 is released from the engagement with the base 100, and the rotating locking member 210 can drive the unlocking pin 220 to rotate within the mounting hole 120, and the locking assembly 200 can move relative to the base 100 in the first direction Y within the mounting hole 120. Specifically, when the rotating locking member 210 rotates, it drives the unlocking pin 220 to rotate together, and when the rotating locking member 210 rotates, it can switch the locking protrusion 211 from the locking groove 111 to the unlocking groove 112. Then, the rotating locking member 210 drives the unlocking pin 220 to move along the extension direction of the unlocking groove 112, that is, the first direction Y. After moving a certain distance, the second working condition is reached. In the second working condition, the locking assembly 200 is completely disengaged from the mounting hole 120, so that the blade 20 can be separated from the clamping space.

[0119] In some embodiments of this disclosure, such as Figure 5 and Figure 7As shown, the unlocking pin 220 is circumferentially limited to the rotary locking member 210 to restrict the rotation of the unlocking pin 220 relative to the rotary locking member 210. Thus, when the rotary locking member 210 rotates, it will cause the unlocking pin 220 to rotate, and when the unlocking pin 220 is restricted from rotating, the rotary locking member 210 is also restricted from rotating.

[0120] Specifically, such as Figure 6 and Figure 7 As shown, when the locking assembly 200 is in the locked state, the unlocking pin 220 engages with the base 100 in a circumferential limiting manner to restrict the rotation of the unlocking pin 220 relative to the base 100. In this state, the rotation of the rotating locking member 210 is also restricted. Thus, by restricting the unlocking pin 220 in the locked state, the rotation of the rotating locking member 210 is further restricted, thereby enhancing the stability in the locked state.

[0121] Pressing the end of the unlocking pin 220 exposed at the opening of the mounting hole 120 releases the circumferential limiting engagement between the unlocking pin 220 and the base 100, switching the locking assembly 200 from the locked state to the unlocked state. Specifically, when the circumferential limiting engagement between the unlocking pin 220 and the base 100 is released, the restriction on the unlocking pin 220 is also released, allowing the unlocking pin 220 to rotate relative to the base 100. Since the rotating locking member 210 is circumferentially limiting the unlocking pin 220, when the circumferential limitation of the unlocking pin 220 relative to the base 100 is released, the rotation of the rotating locking member 210 can drive the unlocking pin 220 to rotate as well, thereby switching the locking assembly 200 from the locked state to the unlocked state.

[0122] In this disclosure, the circumferential limiting engagement between the unlocking pin 220 and the base 100 can be achieved through a form fit or by adding a new locking component. Optionally, such as Figure 6 and Figure 7 As shown, the mounting hole 120 has an abutment block 121 on its wall, and the unlocking pin 220 has an abutment platform 221. When the locking assembly 200 is in the locked state, the unlocking pin 220 abuts against the abutment platform 221 via the abutment block 121. The contact surfaces of the abutment block 121 and the abutment platform 221 form a first engaging surface to restrict the unlocking pin 220 from rotating relative to the base 100. The first engaging surface can be a plane. In this design, by designing the shapes of the base 100 and the unlocking pin 220, no additional components are needed. The relative movement of the locking assembly 200 with the base 100 in the locked state can be restricted solely by the contact surfaces of the abutment block 121 and the abutment platform 221. The structure is simple and effectively prevents accidental loosening caused by external forces, enhancing the stability and reliability of the entire structure.

[0123] Pressing the end of the unlocking pin 220 exposed at the opening of the mounting hole 120 causes the abutment block 121 to disengage from the abutment platform 221. Rotating the locking member 210 causes the unlocking pin 220 to rotate within the mounting hole 120, and the locking component 200 switches from the locked state to the unlocked state.

[0124] In this disclosure, the circumferential limiting engagement between the unlocking pin 220 and the rotary locking member 210 can be achieved through a form fit or by adding a new locking component. Optionally, such as Figure 5 and Figure 7 As shown, the rotary locking member 210 has an installation channel 212, and a limiting block 2121 is provided within the installation channel 212. The unlocking pin 220 has a limiting groove 222 that matches the limiting block 2121. The contact surface between the limiting block 2121 and the limiting groove 222 forms a second engaging surface to restrict the rotation of the unlocking pin 220 relative to the rotary locking member 210. The second engaging surface can be a plane. In this solution, by designing the shapes of the rotary locking member 210 and the unlocking pin 220, no additional components are needed. The relative rotation of the rotary locking member 210 and the unlocking pin 220 can be restricted solely by the contact surface between the limiting block 2121 and the limiting groove 222. The structure is simple and can effectively prevent accidental loosening caused by external forces, enhancing the stability and reliability of the entire structure.

[0125] Furthermore, the unlocking pin 220 is installed and limited within the mounting channel 212 through the cooperation of the limiting block 2121 and the limiting groove 222, so that when the locking assembly 200 is in the unlocked state, the rotating locking member 210 and the unlocking pin 220 can be separated from the base 100 together. That is, the unlocking pin 220 is connected to the rotating locking member 210, and when the rotating locking member 210 moves relative to the base 100 in the first direction Y, it can drive the unlocking pin 220 to move together.

[0126] Optionally, when the locking assembly 200 is in the locked state, the first and second engaging surfaces are coplanar. This design makes the force distribution among the components of the locking assembly 200 more uniform and reasonable in the locked state, reducing the risk of component damage or deformation due to excessive local stress, and further improving the stability and reliability of the locking assembly 200. Specifically, in the locked state, the locking assembly 200 needs to withstand certain external forces (such as the rotational force of the blade 20, vibration, etc.). If the two engaging surfaces are not coplanar, it may lead to excessive local stress, thereby affecting the service life of the components.

[0127] like Figure 6 and Figure 7 As shown, the unlocking pin 220 is also provided with a first protrusion 223 and a second protrusion 122 in the mounting hole 120. The unlocking pin 220 completes the contact with the base 100 through the stepped engagement of the first protrusion 223 and the second protrusion 122.

[0128] In some embodiments of this disclosure, such as Figures 2 to 4 As shown, the locking assembly 200 also includes an elastic element 230, which elastically abuts against the unlocking pin 220 and the rotary locking element 210. When the locking assembly 200 is in the locked state, the elastic element 230 is in a compressed state. The elastic element 230 can be a spring or a structural component made of rubber, but is not limited to these. In the locked state, the compressed elastic element 230 provides continuous elastic support to the unlocking pin 220. This design not only enhances the stability of the locking assembly 200 in the locked state, but also assists the unlocking pin 220 in the unlocking process through the elastic restoring force of the elastic element 230, so that the user has a noticeable elastic force when pressing the unlocking pin 220. This feedback enhances the user's sense of control over the operation process and reduces the risk of component damage or functional failure due to improper operation.

[0129] Optionally, the elastic element 230 passes through the installation channel 212, and the unlocking pin 220 passes through at least partially within the elastic element 230.

[0130] In some embodiments of this disclosure, the mounting channel 212 extends through the rod portion 214 and the head 213. The locking assembly 200 further includes a limiting member 240, which is detachably connected to the opening of the mounting channel 212 away from the rod portion 214 and closes the opening. The limiting member 240 may be threadedly connected to the mounting through hole, such as a bolt, but is not limited thereto. Optionally, the end face of the limiting member 240 is flush with the end face of the head 213, which not only reduces surface dirt accumulation but also prevents collisions with obstacles such as stones.

[0131] In some exemplary embodiments of this disclosure, such as Figure 8 As shown, the maximum distance H3 between the end face of the head 213 and the blade 20 in the first direction Y is less than 1 / 4 of the maximum distance H4 between the exposed end face of the unlocking pin 220 and the blade 20 in the first direction Y. Thus, most of the structure in the locking assembly 200 can be located between the end faces of the blade 20 and the unlocking pin 220, greatly reducing the risk of damage to the locking assembly 200 even if the quick-release structure of the blade 20 collides with an obstacle on the travel surface during the movement of the smart lawnmower. Specifically, the ratio of H3 to H4 can be 1:5, 1:5.1, 1:5.2, 1:5.3, 1:5.4, 1:5.5, 1:5.6, 1:5.7, or 1:5.8, but is not limited to these ratios.

[0132] Optionally, the outer diameter of the head 213 near the mounting hole 120 is larger than the diameter of the mounting hole 120 near the opening of the head 213.

[0133] The blade assembly / disassembly structure 10 disclosed herein, with the blade 20 mounted on the cutter head 30, can be referred to in the following diagram. Figure 9 Part A of the diagram shows the state of the blade 20 being removed from the cutter head 30. Figure 9 Part B of the diagram. It should be noted that, for ease of illustrating the assembly relationships between components, Figure 9 State B shows the separated state of the rotary locking component 210, unlocking pin 220, elastic component 230, and limiting component 240. In actual disassembly and assembly, the rotary locking component 210, unlocking pin 220, elastic component 230, and limiting component 240 are separated from the base 100 as a whole.

[0134] exist Figure 9 In this process, to switch the locking assembly 200 from the locked state to the unlocked state (i.e., from state A to state B), the unlocking pin 220 can be pressed in the direction indicated by arrow e, and then the rotating locking member 210 can be rotated clockwise or counterclockwise by a certain angle. This will cause the locking protrusion 211 to switch from the locking groove 111 to the unlocking groove 112. Afterward, the user can pull the rotating locking member 210 away from the base 100 along the first direction Y. When the rotating locking member 210 is pulled out, it will also pull out the elastic member 230, the unlocking pin 220, and the limiting member 240 together, thus switching to state B. Similarly, to switch from the unlocked state to the locked state (i.e., from state B to state A), the rotating locking member 210 can be pressed towards the base 100 and then rotated by a certain angle, causing the locking protrusion 211 to switch from the unlocking groove 112 to the locking groove 111, thus switching to state A.

[0135] like Figure 1 As shown in the illustration, this application also discloses an intelligent lawnmower, including a blade disc 30, a drive assembly, and a blade mounting / removing structure 10 as described in any of the above embodiments. The drive assembly drives the blade disc 30 to rotate. The blade mounting / removing structure 10 is connected to the blade disc 30 and is used to fix the blade 20 to the blade disc 30.

[0136] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

Claims

1. A blade assembly / disassembly structure for connecting blades to the blade disc of a smart lawnmower, the smart lawnmower being capable of traveling on a surface, characterized in that, include: The base has a through mounting hole that extends along a first direction; A locking assembly is detachably inserted into the mounting hole. The locking assembly includes a rotating locking member, which has a head and a rod connected to each other. The head is located on one side of the rod in the first direction. The outer perimeter of the head is larger than the outer perimeter of the rod. The rod passes through the mounting hole, and the head protrudes from the mounting hole and, together with the perimeter of the base, defines a clamping space. The locking component has a locked state and an unlocked state; When the locking component is in the locked state, the locking component engages with the base, and the blade is confined within the clamping space; When the locking component is in the unlocked state, the locking component has a first working condition and a second working condition. In the first working condition, the locking component is released from the engagement with the base, the rotating locking member can rotate within the mounting hole, and the locking component can move relative to the base in the first direction within the mounting hole. In the second working condition, the locking component is completely disengaged from the mounting hole, allowing the blade to separate from the clamping space.

2. The blade assembly / disassembly structure according to claim 1, characterized in that, The ratio of the size of the head in the first direction to the size of the base in the first direction is greater than 0 and less than or equal to 1:6; When the locking assembly is in the locked state, the distance between the head end face and the travel surface is less than the distance between the rod end face and the travel surface; In the second operating condition, the locking assembly as a whole disengages from the mounting hole on the side of the base near the head, allowing the blade to separate from the clamping space.

3. The blade assembly / disassembly structure according to claim 1, characterized in that, The outer wall of the rod and the wall of the mounting hole are provided with a locking protrusion that is fixedly connected to the rotating locking member or the base, and the other is provided with a slot for the locking protrusion to be inserted. The slot includes a locking slot and an unlocking slot, and the locking slot and the unlocking slot are connected. When the rotating locking member rotates within the mounting hole, it enables the locking protrusion to switch between the locking groove and the unlocking groove; When the locking assembly is in the locked state, the locking protrusion is located in the locking groove; In the first working condition, the locking protrusion switches from the locking groove to the unlocking groove, and can move along the first direction within the unlocking groove; In the second operating condition, the locking protrusion slides out of the unlocking groove, so that the locking assembly is completely disengaged from the mounting hole.

4. The blade assembly / disassembly structure according to claim 3, characterized in that, The locking protrusion is fixedly connected to the outer wall of the rod, and the slot is formed in the wall of the mounting hole; The unlocking groove is open on the side facing the head, so that in the second working condition, the locking protrusion slides out from the unlocking groove; The locking groove is closed on the side facing the head, so that when the locking component is in the locked state, the locking component engages with the base and is confined within the mounting hole.

5. The blade assembly / disassembly structure according to claim 3, characterized in that, The locking protrusion is fixedly connected to the wall of the mounting hole, and the slot is formed on the outer wall of the rod. The unlocking groove is open on the side away from the head, so that the locking protrusion slides out of the unlocking groove in the second working condition; The locking groove is closed on the side away from the head, so that when the locking component is in the locked state, the locking component engages with the base and is confined within the mounting hole.

6. The blade assembly / disassembly structure according to claim 3, characterized in that, The locking slot and the unlocking slot are connected by a sliding slot; When the rotary locking member rotates within the mounting hole, the locking protrusion can slide along the sliding groove to switch between the locking groove and the unlocking groove.

7. The blade assembly / disassembly structure according to claim 2, characterized in that, The locking assembly further includes an unlocking pin, which abuts against the rotary locking member and the base. One end of the unlocking pin elastically abuts against the rotary locking member, and the other end is exposed at the opening of the mounting hole away from the head. Pressing one end of the unlocking pin exposed at the mounting hole opening switches the locking assembly from the locked state to the unlocked state. In the first operating condition, the locking assembly is released from the engagement with the base, the rotating locking member can drive the unlocking pin to rotate in the mounting hole, and the locking assembly can move relative to the base in the first direction within the mounting hole; in the second operating condition, the locking assembly is completely disengaged from the mounting hole, allowing the blade to separate from the clamping space.

8. The blade assembly / disassembly structure according to claim 7, characterized in that, The unlocking pin engages with the rotary locking member in a circumferential limiting manner to restrict the unlocking pin from rotating relative to the rotary locking member; When the locking component is in the locked state, the unlocking pin engages with the base in a circumferential limiting manner to restrict the unlocking pin from rotating relative to the base; Pressing one end of the unlocking pin exposed at the mounting hole releases the circumferential limiting engagement between the unlocking pin and the base, and the locking assembly switches from the locked state to the unlocked state.

9. The blade assembly / disassembly structure according to claim 7, characterized in that, The mounting hole wall is provided with an abutment block, and the unlocking pin is provided with an abutment platform; When the locking component is in the locked state, the unlocking pin abuts against the abutting platform through the abutting block, and the contact surface between the abutting block and the abutting platform forms a first locking surface to restrict the unlocking pin from rotating relative to the base; Pressing one end of the unlocking pin exposed at the opening of the mounting hole causes the abutment block to disengage from the abutment platform. The rotating locking member drives the unlocking pin to rotate within the mounting hole, and the locking assembly switches from the locked state to the unlocked state.

10. The blade assembly / disassembly structure according to claim 9, characterized in that, The rotating locking component has an installation channel, the installation channel has a limiting block, and the unlocking pin has a limiting groove that matches the limiting block. The unlocking pin is installed and limited within the installation channel by the limiting block and the limiting groove, so that when the locking assembly is in the unlocked state, the rotating locking member and the unlocking pin can be separated from the base together. The contact surface between the limiting block and the limiting groove forms a second engaging surface to restrict the unlocking pin from rotating relative to the rotating locking member.

11. The blade assembly / disassembly structure according to claim 10, characterized in that, When the locking component is in the locked state, the first latching surface and the second latching surface are coplanar.

12. The blade assembly / disassembly structure according to claim 9, characterized in that, The unlocking pin is also provided with a first protrusion, and a second protrusion is provided in the mounting hole. The unlocking pin completes the contact with the base through the stepped engagement of the first protrusion and the second protrusion.

13. The blade assembly / disassembly structure according to claim 10, characterized in that, The locking component further includes: An elastic element is elastically engaged between the unlocking pin and the rotary locking element; When the locking component is in the locked state, the elastic element is in the compressed state.

14. The blade assembly / disassembly structure according to claim 13, characterized in that, The elastic element is inserted into the installation channel, and the unlocking pin is at least partially inserted into the elastic element.

15. The blade assembly / disassembly structure according to claim 10, characterized in that, The mounting channel extends through the rod and the head, and the locking assembly further includes: A limiting component is detachably connected to the opening of the mounting channel away from the end face of the rod and closes the opening.

16. The blade assembly / disassembly structure according to claim 7, characterized in that, The maximum distance between the head end face and the blade in the first direction is less than 1 / 4 of the maximum distance between the exposed end face of the unlocking pin and the blade in the first direction.

17. The blade assembly / disassembly structure according to claim 1, characterized in that, The rotating locking member has its rotating shaft within the mounting hole coaxial with the center line of the mounting hole.

18. A smart lawnmower capable of traveling on a surface, characterized in that, include: Cutter head; The drive component drives the cutter head to rotate; The blade assembly / disassembly structure as described in any one of claims 1 to 17 is connected to the cutter head and is used to fix the blade to the cutter head.

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