Turnover mechanism, grass collecting device and mowing equipment

Abstract

The utility model provides a turnover mechanism, a grass collecting device and mowing equipment. The overturning mechanism is used for overturning the grass collecting box of the grass collecting device. The turnover mechanism comprises a shell, a driving piece, a transmission mechanism and a push rod. The driving piece is arranged on the shell. The transmission mechanism comprises a worm and a worm gear meshed with the worm. The worm is in transmission connection with the driving piece and the worm gear. One end of the push rod is fixed to the worm wheel, the other end of the push rod makes contact with the grass collecting box, and the push rod is used for driving the grass collecting box to turn over; on the other hand, the worm is in transmission connection with the worm gear, so that the occupied space of the turning mechanism on the mowing equipment is reduced, a small force is applied to the worm, large torque can be formed on the worm gear, the transmission efficiency of the push rod is improved, and the supporting stability of the push rod on the grass collecting box is improved; and on the other hand, the reverse self-locking performance of the transmission mechanism can play a role in protecting the driving piece, the service life of the driving piece is prolonged, and the supporting and stabilizing performance is improved.

Description

Technical Field

[0001] This utility model relates to the field of grass-cutting machinery technology, and in particular to a flipping mechanism, a grass-collecting device, and a grass-cutting equipment. Background Technology

[0002] The grass collection box of a lawnmower is used to temporarily store the grass clippings cut by the mowing mechanism. Current technology generally involves manually disassembling the grass collection box to empty the clippings, or using a linkage structure to flip the grass collection box, which is relatively cumbersome and not automated enough.

[0003] Existing automatic tilting mechanisms achieve the tilting of the hay collection box through gear transmission. However, gear transmission mechanisms occupy a large volume, have low load-bearing capacity, poor transmission stability, and lack self-locking properties, making them prone to damaging the drive components. Utility Model Content

[0004] In view of this, the present invention provides a flipping mechanism, a grass collecting device, and a grass cutting device to solve the technical problems of the gear transmission mechanism in the prior art, which has a large volume, low load-bearing capacity, poor transmission stability, and lack of self-locking, making it easy to damage the drive components.

[0005] In a first aspect, this utility model provides a flipping mechanism. The flipping mechanism is used to flip the grass collection box of a grass collection device. The flipping mechanism includes a housing, a driving component, a transmission mechanism, and a push rod. The driving component is disposed on the housing. The transmission mechanism includes a worm and a worm wheel meshing with the worm. The worm is drively connected to the driving component and the worm wheel. One end of the push rod is fixed to the worm wheel, and the other end of the push rod contacts the grass collection box. The push rod is used to drive the grass collection box to flip.

[0006] In conjunction with the first aspect, in some implementations of the first aspect, the driving member is disposed at the bottom of the worm, and the worm wheel is disposed on the side of the worm near the grass collection box.

[0007] In conjunction with the first aspect, in some implementations of the first aspect, the housing is provided with a mounting cavity, the drive member and the transmission mechanism are mounted on the inner wall of the mounting cavity, and the push rod is rotatably mounted on the outer wall of the mounting cavity.

[0008] In conjunction with the first aspect, in some implementations of the first aspect, the worm gear includes a tooth body and a shaft protruding from the tooth body, the shaft being rotatably inserted through the housing and fixedly connected to the push rod, the tooth body being configured as a toothed gear, and the central angle corresponding to the tooth portion of the tooth body being adapted to the flip angle of the grass collection box.

[0009] In conjunction with the first aspect, in some implementations of the first aspect, the end of the push rod facing away from the worm gear is provided with a guide slide, the guide slide being configured as an arc-shaped structure and used to contact the edge of the grass collection box.

[0010] Secondly, this utility model provides a grass-collecting device applied to lawn mowing equipment. The grass-collecting device includes a main body, a grass-collecting box, a grass-collecting mechanism, and the aforementioned flipping mechanism. The main body is connected to the lawn mowing equipment. The main body is provided with a receiving cavity. The grass-collecting mechanism is disposed within the receiving cavity. The grass-collecting box is rotatably connected to the side of the main body opposite to the lawn mowing equipment. The flipping mechanism is disposed on the side wall of the main body.

[0011] In conjunction with the second aspect, in some implementations of the second aspect, the grass collection box is provided with a first adsorption element at its edge facing the main body, and the main body and / or the push rod is provided with a second adsorption element that is magnetically adsorbed to the first adsorption element.

[0012] In conjunction with the second aspect, in some implementations of the second aspect, the push rod is rotatably disposed on the inner sidewall of the accommodating cavity. When the first adsorption member and the second adsorption member are adsorbed and connected, the push rod is accommodated in the accommodating cavity, and the grass collection box covers the push rod.

[0013] In conjunction with the second aspect, in some implementations of the second aspect, the top of the main body is provided with a mounting base and a hanging rod connected to the mounting base, the grass collection box is provided with a hook, the hook is rotatably connected to the hanging rod, and is detachably connected to the hanging rod.

[0014] Thirdly, this utility model provides a lawn mowing device. The lawn mowing device includes a body and a flipping mechanism or a grass collecting device as described above, wherein the flipping mechanism or the grass collecting device is disposed at the rear of the body.

[0015] The present invention provides a flipping mechanism, a grass collecting device, and a mowing device based on a worm gear and a worm wheel meshing with the worm. The worm gear is connected to the drive component and the worm wheel via a transmission. One end of the push rod is fixed to the worm wheel, and the other end of the push rod contacts the grass collecting box. The push rod is used to drive the grass collecting box to flip. On the one hand, the flipping mechanism can realize the automatic flipping of the grass collecting box, improving the grass unloading efficiency. On the other hand, the worm gear and worm wheel transmission connection has the characteristics of compact structure, large speed ratio, large load-bearing capacity, and smooth transmission, thereby reducing the space occupied by the flipping mechanism on the mowing device. Moreover, applying a small force to the worm gear can generate a large torque on the worm wheel, improving the transmission efficiency of the push rod and the support stability of the push rod for the grass collecting box. Furthermore, the self-locking performance of the worm gear and worm wheel prevents the worm wheel from driving the worm gear to rotate, thus keeping the drive component and the grass collecting box in a certain position. Therefore, the reverse self-locking property of the transmission mechanism can protect the drive component, extend its service life, and improve the support stability of the push rod for the grass collecting box. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of a lawn mowing device provided by this utility model.

[0017] Figure 2 yes Figure 1 A schematic diagram of the grass collection device of the mowing equipment in the unloading state.

[0018] Figure 3 yes Figure 1 A schematic diagram of the grass collection device of the mowing equipment in the grass collection state.

[0019] Figure 4 yes Figure 1 A schematic diagram of the first embodiment of the flipping mechanism of the lawn mowing equipment.

[0020] Figure 5 yes Figure 1 The diagram shows the structure of the flipping mechanism of the lawnmower, omitting the cover and protective shield.

[0021] Figure 6 yes Figure 2 An exploded view of the flipping mechanism of the lawnmower.

[0022] Figure 7 yes Figure 1 A schematic diagram of the second embodiment of the flipping mechanism of the lawnmower.

[0023] Key component symbols: Lawn mower - 100; Body - 110; Grass collection device - 200; Main body - 10; Receptacle - 101; Second suction element - 12; Mounting base - 13; Groove - 131; Lug - 132; Hanging rod - 14; Grass collection box - 20; First suction element - 21; Hook - 23; Connecting part - 231; Hook part - 232; Grass collection mechanism - 30; Bracket - 31; Grass collection component - 32; Tilting mechanism - 40; Outer shell - 41; Mounting cavity - 401; Sealing cavity - 402; Positioning groove - 403; Wiring groove - 404; Annular groove - 405; Base - 411; Cover - 412; Protective cover - 413; Boss - 414; Angle marking structure - 415; Drive component - 42; Transmission mechanism - 43; Worm gear - 431; Worm wheel - 432; Tooth body - 4321; Tooth section - 4322; Missing tooth section - 4323; Shaft body - 4325; Limiting groove - 4326; Bearing - 433; Push rod - 44; Irregular hole - 4401; Mounting groove - 4402; Rod body - 441; Reinforcing rib - 442; Guide slide - 45; Limiting component - 46; Pointer - 47; Needle head - 471; Needle bar - 472; Needle tail - 473; Slot - 4731; Sensing component - 48; First sensing component - 481; Second sensing component - 482; Processor - 49; Circuit board - 50; Buffer component - 60.

[0024] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0025] The following description of various embodiments of the present invention is based on the accompanying drawings.

[0026] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. "Fixed connection" means that the components are connected to each other and their relative positional relationship remains unchanged after connection. "Rotary connection" means that the components are connected to each other and can rotate relative to each other after connection. The term "integral molding" means that during the formation of one of a plurality of components, that component is connected to the other components without requiring further processing (such as bonding, welding, snap-fit ​​connection, screw connection) to connect the two components together. The directional terms mentioned in the embodiments of this utility model, such as "top," "bottom," "inner," "outer," and "side," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this utility model, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0027] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of a lawn mowing device 100 provided in an embodiment of this utility model. The lawn mowing device 100 may include, but is not limited to, hand-held, riding, and fully automatic intelligent lawn mowing devices 100, etc., and this utility model does not limit this to any particular type. The lawn mowing device 100 can move on the ground. For example, the lawn mowing device 100 can move on the ground by being pushed by a user. Alternatively, the lawn mowing device 100 itself has mobility and can move automatically on the ground via a drive mechanism. The lawn mowing device 100 includes a body 110 and a grass collecting device 200, the grass collecting device 200 being disposed at the rear of the body 110. The lawn mowing device 100 includes, but is not limited to, the body 110, a cutting mechanism, and a lifting mechanism. The cutting mechanism and the lifting mechanism are disposed on the body 110. The lifting mechanism is used to drive the cutting mechanism to move along the height direction of the lawn mowing device 100. The cutting mechanism is used to cut the grass.

[0028] For the sake of accuracy, all references to direction in this article should be expressed in terms of direction. Figure 1 For reference, the term "length direction X" refers to the direction of travel of the lawnmower 100, and is parallel to the length direction of the lawnmower 100, i.e., the front-to-back direction (where the positive X-axis is front). The term "width direction Y" refers to the direction from the left wheel to the right wheel of the lawnmower 100, and is parallel to the width direction of the lawnmower 100, i.e., the left-to-right direction (where the positive Y-axis is right). The term "height direction Z" refers to the direction from the supporting plane of the lawnmower 100 to the highest protruding part of the lawnmower 100, and is parallel to the height direction of the lawnmower 100, i.e., the up-down direction (where the positive Z-axis is up). The length direction X, width direction Y, and height direction Z together constitute the three orthogonal directions of the lawnmower 100. For ease of description, the up-down, left-to-right, and front-to-back orientations in this utility model are relative positions and do not constitute a limitation. The length direction X, width direction Y, and height direction Z of the lawnmower 100 can be customized according to the specific structure of the product and the perspective presented in the accompanying drawings; this utility model does not impose specific limitations. The tail section refers to the rear part of the lawn mowing equipment 100 along the forward direction.

[0029] Please refer to the following: Figures 1 to 3 , Figure 2 yes Figure 1 A schematic diagram of the grass collection device 200 of the mowing equipment 100 in the unloading state; Figure 3 yes Figure 1This is a schematic diagram of the grass collection device 200 of the mowing equipment 100 in the grass collection state. The grass collection device 200 includes a main body 10, a grass collection box 20, a grass collection mechanism 30, and a flipping mechanism 40. The main body 10 is connected to the body 110 of the mowing equipment 100. The main body 10 is provided with a receiving cavity 101. The grass collection box 20 is rotatably connected to the rear of the main body 10. The grass collection mechanism 30 is disposed in the receiving cavity 101 and is used to collect the grass clippings cut by the mowing mechanism into the grass collection box 20. The grass collection mechanism 30 is, for example, but not limited to, a roller brush. The grass collection device 200 has a grass collection state and a grass unloading state. In the grass collection state, the grass collection box 20 is closed to the main body 10, and the grass collection box 20 can be used to temporarily store the grass clippings cut by the mowing equipment 100; in the grass unloading state, the grass collection box 20 is flipped relative to the main body 10 to dump the grass clippings collected in the grass collection box 20. The flipping mechanism 40 is disposed on the side wall of the main body 10 and is used to flip the grass collection box 20 to dump the grass clippings collected in the grass collection box 20, thereby realizing the automatic grass unloading function of the grass collection device 200 and improving the grass unloading efficiency. In this embodiment, the flipping mechanism 40 is disposed at the rear of the main body 10, which facilitates the alignment and assembly of the flipping mechanism 40 and the grass collection box 20, and better realizes the flipping performance of the flipping mechanism 40.

[0030] The main body 10 is detachably mounted on the body 110 of the mowing equipment 100, thereby allowing the grass collection device 200 to be removed from the body 110 of the mowing equipment 100 for convenient maintenance and replacement, and to enrich the different application scenarios of the mowing equipment 100, such as mowing scenarios, grass collection scenarios, or mowing and grass collection scenarios. In some embodiments, the main body 10 may also be non-detachably mounted on the body 110 of the mowing equipment 100; this utility model does not impose specific limitations. The grass collection mechanism 30 may include a bracket 31 connected to the main body 10 and a grass collection component 32 mounted on the bracket 31. The bracket 31 is rotatably connected to the main body 10, thereby allowing the grass collection mechanism 30 to adapt to different terrains. The grass collection component 32 is, for example, but not limited to, a roller brush, used to collect grass cut by the cutting mechanism. The flipping mechanism 40 is rotatably connected to the top of the main body 10, thereby increasing the flipping angle of the grass collection box 20 and improving the grass unloading effect.

[0031] Please refer to the following: Figure 4 and Figure 5 , Figure 4 yes Figure 1 A schematic diagram of the structure of the first embodiment of the flipping mechanism 40 of the lawn mowing device 100; Figure 5 yes Figure 1The schematic diagram of the flipping mechanism 40 of the mowing device 100, omitting the cover 412 and protective cover 413, is shown below. This utility model provides a flipping mechanism 40. The flipping mechanism 40 is used to flip the grass collection box 20 of the grass collection device 200. The flipping mechanism 40 includes a housing 41, a driving member 42, a transmission mechanism 43, and a push rod 44. The driving member 42 is mounted on the housing 41. The transmission mechanism 43 includes a worm gear 431 and a worm wheel 432 meshing with the worm gear 431. The worm gear 431 is connected to the driving member 42 and the worm wheel 432. One end of the push rod 44 is fixed to the worm wheel 432, and the other end of the push rod 44 contacts the grass collection box 20. The push rod 44 is used to drive the grass collection box 20 to flip.

[0032] The flipping mechanism 40 provided in this embodiment of the utility model is based on a worm gear 431 and a worm wheel 432 meshing with the worm gear 431. The worm gear 431 is connected to the driving member 42 and the worm wheel 432 in a transmission connection. One end of the push rod 44 is fixed to the worm wheel 432, and the other end of the push rod 44 contacts the grass collection box 20. The push rod 44 is used to drive the grass collection box 20 to flip. On the one hand, the flipping mechanism 40 can realize the automatic flipping of the grass collection box 20, improving the grass unloading efficiency; on the other hand, the transmission connection between the worm gear 431 and the worm wheel 432 has the characteristics of compact structure, large load-bearing capacity, and smooth transmission, thereby reducing the space occupied by the flipping mechanism 40 on the mowing equipment 100. Moreover, a small force applied to the worm gear 431 can drive the worm wheel 432 to flip. The transmission mechanism 43 generates a large torque, which improves the transmission efficiency of the push rod 44 and the support stability of the push rod 44 for the grass collection box 20. On the other hand, the self-locking performance of the worm gear 431 and the worm wheel 432 prevents the worm wheel 432 from driving the worm gear 431 to rotate, thus keeping the drive component 42 and the grass collection box 20 in a certain position. Therefore, the reverse self-locking property of the transmission mechanism 43 can protect the drive component 42, extend the service life of the drive component 42, and improve the support stability of the push rod 44 for the grass collection box 20.

[0033] In some embodiments, the grass collection box 20 is provided with a first suction member 21 at its edge facing the main body 10, and the main body 10 and / or the push rod 44 are provided with a second suction member 12 that magnetically attracts the first suction member 21. This prevents the grass collection box 20 from shaking and leaking grass when the mowing equipment 100 is operating, improving grass collection efficiency and reducing noise.

[0034] The first adsorption element 21 is a magnetizable metal element, and the second adsorption element 12 is a magnetic element, thereby magnetizing the first adsorption element 21 with the second adsorption element 12; or, the first adsorption element 21 is a magnetic element, and the second adsorption element 12 is a magnetizable metal element, thereby magnetizing the second adsorption element 12 with the first adsorption element 21. The magnetizable metal element is made of a magnetizable metal material, such as iron, cobalt, nickel, cast steel, silicon steel, etc. The magnetic element is made of a magnetic material. Thus, when the grass collection box 20 is closed on the main body 10, causing the first adsorption element 21 to approach the second adsorption element 12, the first adsorption element 21 and the second adsorption element 12 are fixedly connected by magnetic adsorption. When the grass collection box 20 is flipped relative to the main body 10, causing the first adsorption element 21 to move away from the second adsorption element 12, the adsorption connection between the first adsorption element 21 and the second adsorption element 12 is released.

[0035] For example, in this embodiment, the first adsorption member 21 is disposed on the edges of the two side walls of the grass collection box 20, and the second adsorption member 12 is disposed on the end of the push rod 44, thereby preventing the push rod 44 from detaching from the contact with the grass collection box 20 and improving the support reliability of the push rod 44. In some embodiments, the second adsorption member 12 may also be disposed on the edge of the main body 10 near the grass collection box 20. The placement position of the second adsorption member 12 can be adjusted according to the actual situation, and this utility model does not impose a specific limitation. In other embodiments, the grass collection box 20 and the main body 10 may also be fixedly connected together by other detachable structures, such as, but not limited to, snap-fit ​​structures or elastic structures. The first adsorption member 21 may be disposed on the entire edge of the two side walls of the grass collection box 20; or, it may be disposed on a portion of the edge of the two side walls of the grass collection box 20.

[0036] The push rod 44 is rotatably mounted on the side wall of the receiving cavity 101. When the first adsorption member 21 and the second adsorption member 12 are adsorbed together, the push rod 44 is housed within the receiving cavity 101, and the grass collection box 20 blocks the push rod 44. When the first adsorption member 21 and the second adsorption member 12 are disengaged, the push rod 44 extends out of the receiving cavity 101 and pushes against and supports the grass collection box 20, causing the grass collection box 20 to flip relative to the main body 10. Thus, on the one hand, when the first adsorption element 21 and the second adsorption element 12 are adsorbed and connected, the grass collection device 200 is in the grass collection state, and the push rod 44 is housed in the receiving cavity 101, which improves the aesthetics of the grass collection device 200 and avoids interference between the push rod 44 and external components or obstacles, protecting the push rod 44 from damage; when the first adsorption element 21 and the second adsorption element 12 are disengaged, the grass collection device 200 is in the grass unloading state, and the push rod 44 extends out of the receiving cavity 101 and supports the grass collection box 20, so as to realize the grass unloading function of the grass collection box 20.

[0037] For example, in this embodiment, the grass collection box 20 is detachably connected to the main body 10, thereby facilitating the cleaning and maintenance of the grass collection box 20 and improving the assembly efficiency of the main body 10 with the mounting flipping mechanism 40 and the grass collection mechanism 30. In some embodiments, the grass collection box 20 is not detachably connected to the main body 10.

[0038] The top of the main body 10 is provided with a mounting base 13 and a hanging rod 14 connected to the mounting base 13. The grass collection box 20 is provided with a hook 23. The hook 23 is rotatably connected to the hanging rod 14 and is detachably connected to the hanging rod 14, thereby realizing the removal of the grass collection box 20. The hook 23 includes a connecting part 231 and a hook part 232. The connecting part 231 is connected to the grass collection box 20, and the hook part 232 is rotatably connected to the hanging rod 14. The hook part 232 is bent relative to the connecting part 231, thereby avoiding the problem of disengagement from the hanging rod 14 during the rotation of the grass collection box 20 by the hook part 232. The hook part 232 is configured with an arc-shaped structure, thereby better engaging with the hanging rod 14 and realizing the swing function of the grass collection box 20. The mounting base 13 has a recessed groove 131 and two opposing lugs 132. The hanging rod 14 is connected between the two lugs 132 and spaced apart from the bottom of the groove 131 to allow the hook 23 to rotate. The hook 23 is positioned between the two lugs 132 to prevent the hook 23 from deviating from the mounting base 13 when the grass collection device 200 is unloading grass, thus preventing the grass collection box 20 from shaking and affecting the contact between the push rod 44 and the grass collection box 20. This ensures the reliability and stability of the grass collection box 20's flipping.

[0039] In this embodiment, the number of mounting bases 13 corresponds one-to-one with the number of hooks 23, and both can be two. The two mounting bases 13 can be located on opposite sides of the main body 10. The two hooks 23 are rotatably connected to the hanging rods 14 on the mounting bases 13, facilitating the flipping of the grass collection box 20. Furthermore, the grass collection box 20 exhibits good stability during flipping and is not easily detached from the main body 10. It should be noted that the number of hooks 23 and mounting bases 13 is merely for illustrative purposes. The number of hooks 23 and mounting bases 13 can also be one, three, four, or more than four, etc. Those skilled in the art can design according to factors such as the grass collection capacity of the grass collection box 20, and this utility model does not impose specific limitations.

[0040] The housing 41 is used to mount the drive component 42, the transmission mechanism 43, and the push rod 44. It is understood that the drive component 42, the transmission mechanism 43, and the push rod 44 can be first mounted on the housing 41, and then the housing 41 can be mounted on the main body 10 of the grass collecting device 200. This makes the installation between the flipping mechanism 40 and the main body 10 of the grass collecting device 200 more convenient.

[0041] In some embodiments, the drive member 42 is disposed at the bottom of the worm 431, and the worm wheel 432 is disposed on the side of the worm 431 near the grass collection box 20. Thus, on the one hand, by placing the worm 431 at the top of the drive member 42, the flipping mechanism 40 can accommodate a longer push rod 44, resulting in a longer lever arm for the push rod 44, which generates a larger torque. Therefore, the drive member 42 applies a smaller force to the worm 431 to drive the worm wheel 432 to rotate the push rod 44, resulting in stable and reliable operation, convenient operation, and a better user experience. On the other hand, the worm wheel 432 is closer to the grass collection box 20 than the worm 431, shortening the distance between the push rod 44 and the grass collection box 20, improving the reliability and stability of the contact fit. Furthermore, the overall layout of the various components of the flipping mechanism 40 is optimized, improving space utilization, resulting in a simple structure and smaller size.

[0042] Please refer to the following: Figures 4 to 6 , Figure 6 yes Figure 2 An exploded view of the tilting mechanism 40 of the lawn mowing equipment 100. The outer casing 41 has a mounting cavity 401. The drive unit 42 and transmission mechanism 43 are installed within the mounting cavity 401. A push rod 44 is rotatably mounted on the outer wall of the mounting cavity 401. By housing the drive unit 42 and transmission mechanism 43 within the outer casing 41, the push rod 44 can swing to rotate the grass collection box 20 for unloading. Furthermore, the mounting cavity 401 is separated from the external space, preventing grass clippings from splashing into the mounting cavity 401, reducing cleaning difficulty, and ensuring the normal operation of the drive unit 42 and transmission mechanism 43.

[0043] The outer casing 41 is fixed to the side wall of the main body 10. The outer casing 41 includes a base 411 and a cover 412 that is fixedly fitted to the cover 412. The base 411 and the cover 412 enclose a mounting cavity 401. The cover 412 can be snapped onto the base 411, so that the mounting cavity 401 is formed inside the outer casing 41. Exemplarily, the cover 412 can be fixed to the base 411 by, but not limited to, fasteners (e.g., screws, bolts, or rivets). In some embodiments, the cover 412 and the outer casing 41 can also be fixedly connected together by a snap-fit ​​structure, a threaded structure, or the like.

[0044] In one embodiment, the drive member 42 can be, but is not limited to, a motor. After the drive member 42 is activated, its drive shaft drives the worm gear 431 to rotate. The rotation of the worm gear 431 drives the worm wheel 432, which in turn drives the push rod 44 to rotate. The push rod 44 pushes against the grass collection box 20, allowing the grass collection box 20 to rotate relative to the main body 10, thereby realizing the grass unloading operation of the grass collection device 200. The drive member 42 is fixedly installed inside the housing 41. The drive member 42 does not increase the size of the flipping mechanism 40 in the thickness direction of the housing 41. When the flipping mechanism 40 is disposed on the main body 10 of the grass collection device 200, the flipping mechanism 40 occupies less space on the grass collection device 200. Exemplarily, the drive member 42 is sandwiched between the base 411 and the cover 412. In some embodiments, the drive member 42 can also be, but is not limited to, fixed to the housing 41 by fasteners (e.g., screws, bolts, or rivets).

[0045] One end of the worm gear 431 is rotatably connected to the drive member 42, and the other end of the worm gear 431 is rotatably connected to the housing 41. Exemplarily, in this embodiment, the worm gear 431 is rotatably connected to the housing 41 via a bearing 433, thereby reducing the friction between the worm gear 431 and the housing 41, making the rotation of the worm gear 431 smoother, and reducing energy consumption.

[0046] The worm gear 432 includes a toothed body 4321 and a shaft 4325 protruding from the toothed body 4321. The shaft 4325 rotatably passes through the housing 41 and is fixedly connected to the push rod 44. The toothed body 4321 is configured as a toothed gear, and the central angle corresponding to the tooth portion 4322 of the toothed body 4321 is adapted to the flipping angle of the grass collection box 20. It can be understood that, compared with a circular gear, on the one hand, the toothed gear can limit the rotation angle of the worm gear 432 relative to the worm 431, avoiding damage to the grass collection box 20 due to an excessive flipping angle; on the other hand, the size of the toothed gear is reduced, occupying less internal space in the housing 41, thereby reducing the size of the housing 41 and facilitating the miniaturization of the flipping mechanism 40. Exemplarily, the toothed body 4321 includes a toothed portion 4322 and toothed portions 4323 located at both ends of the toothed portion 4322. The toothed portion 4322 meshes with the worm 431. The central angle corresponding to the tooth 4322 can be less than 200°; or less than 180°; or less than 90°. The shaft 4325 of the worm gear 432 can also be fixed to the housing 41 by the bearing 433, thereby reducing the friction between the worm gear 432 and the housing 41, making the rotation of the worm gear 432 smoother and reducing energy consumption.

[0047] The push rod 44 is mounted on the housing 41 and is rotatable relative to the housing 41. The push rod 44 has a shaped hole 4401. The shaft 4325 of the worm gear 431 passes through the housing 41 and engages with the shaped hole 4401 of the push rod 44, thereby achieving synchronous rotation of the push rod 44 and the worm gear 432. The flipping device also includes a limiting member 46, which is sleeved on the shaft 4325 of the worm gear 432 and located on the side of the push rod 44 away from the tooth body 4321. The push rod 44 is clamped between the limiting member 46 and the housing 41. The limiting member 46 restricts the push rod 44 from moving in the direction away from the tooth body 4321, preventing the push rod 44 from rotating on the housing 41. The portion of the shaft 4325 away from the tooth body 4321 has a limiting groove 4326 for accommodating the limiting member 46. The limiting member 46 can be an elastic retaining ring. For example, the limiting member 46 is configured as an open-loop structure to facilitate assembly.

[0048] In some embodiments, the push rod 44 includes a rod body 441 and a plurality of reinforcing ribs 442 disposed on the rod body 441. The plurality of reinforcing ribs 442 are staggered and connected to enhance the overall structural strength of the push rod 44, so as to better push open and support the grass collection box 20.

[0049] In some embodiments, the end of the push rod 44 facing away from the worm gear 432 is provided with a guide slide portion 45. The guide slide portion 45 is configured with an arc-shaped structure and is used to contact the edge of the grass collection box 20. Exemplarily, the guide slide portion 45 is movably connected to the push rod 44. For example, the guide slide portion 45 is configured as a roller and is used to make rolling contact with the edge of the grass collection box 20. Thus, the guide slide portion 45 is rollable relative to the push rod 44, making it easier for the guide slide portion 45 to slide relative to the grass collection box 20, thereby making it easier for the grass collection box 20 to tip over. The end of the push rod 44 facing away from the worm gear 432 is provided with a mounting groove 4402. The guide slide portion 45 can be disposed within the mounting groove 4402 of the push rod 44 and partially protrude from the push rod 44. When the drive member 42 drives the transmission mechanism 43 to rotate the push rod 44, the guide slide 45 can face the grass collection box 20 and abut against it. Since the guide slide 45 is configured with an arc-shaped structure, the friction between the guide slide 45 and the grass collection box 20 is reduced, preventing scratching of the grass collection box 20, reducing noise, and making it easier for the grass collection box 20 to flip over. In some embodiments, the guide slide 45 can also be fixedly connected to the push rod 44, which is not specifically limited in this invention.

[0050] Please refer to the following: Figure 1 and Figure 7 , Figure 7 yes Figure 1 A schematic diagram of the second embodiment of the flipping mechanism 40 of the lawnmower 100. It is understood that in some embodiments, the push rod 44 may not have a guide slide 45. The end face of the push rod 44 facing away from the worm gear 432 is configured as a plane.

[0051] Please refer to it again. Figures 2 to 6 The width of the end of the push rod 44 near the worm gear 432 is greater than the width of the end of the push rod 44 away from the worm gear 432. On the one hand, this ensures that the guide slide 45 can protrude from the push rod 44 to avoid interference between the guide slide 45 and the grass collection box 20, and at the same time ensures that the push rod 44 can be accommodated in the receiving cavity 101 when collecting grass. On the other hand, this saves materials and reduces review costs.

[0052] In some embodiments, the push rod 44 is provided with a first guide rail, and the grass collection box 20 is provided with a second guide rail that cooperates with the first guide rail, thereby preventing the grass collection box 20 from disengaging from the push rod 44 when it is flipped, and ensuring the reliability and stability of the flipping of the grass collection box 20. For example, one of the first guide rail and the second guide rail can be configured as a groove 131, and the other can be configured as a protrusion.

[0053] When the drive unit 42 operates, its drive shaft drives the worm gear 431 to rotate. The rotation of the worm gear 431 causes the worm wheel 432, along with the push rod 44, to rotate. Specifically, the worm gear 431 and worm wheel 432 mesh and transmit power. The rotation of the worm gear 431 drives the worm wheel 432 to rotate, and the push rod 44 is fixedly connected to the worm wheel 432, so the rotation of the worm wheel 432 drives the push rod 44 to rotate. The push rod 44 can move between a first extreme position and a second extreme position. When the push rod 44 is in the first extreme position, the grass collection box 20 is in the grass clipping collection position, where it can collect and store grass clippings. When the push rod 44 is in the second extreme position, the grass collection box 20 is in the grass clipping dumping position, where it can dump the collected grass clippings.

[0054] It should be noted that, in the utility model embodiment, the first extreme position refers to the position of the push rod 44 when the grass collecting device 200 is in the grass collecting state and the grass collecting box 20 is not flipped relative to the main body 10, i.e., when the grass collecting box 20 is closed on the main body 10; the second extreme position refers to the position of the push rod 44 when the grass collecting device 200 is in the grass unloading state and the grass collecting box 20 is flipped to its maximum angle relative to the main body 10. It should be noted that the push rod 44 can also perform grass unloading operations at any position between the first and second extreme positions; that is, as long as the grass collecting box 20 is flipped relative to the main body 10, the grass collecting device 200 can perform grass unloading operations. Understandably, the larger the flip angle of the grass collecting box 20 relative to the main body 10, the higher the grass unloading efficiency of the grass collecting device 200, and the greater the thrust required by the drive component 42 to the push rod 44, thus requiring a higher load-bearing capacity from the push rod 44.

[0055] The flipping mechanism 40 of this invention can control the flipping of the push rod 44 through the transmission of the worm gear 431 and worm wheel 432, thereby controlling the flipping of the grass collection box 20. This allows the grass collection box 20 to flip to a designated position (i.e., the grass clipping dumping position) to dump the grass clippings collected inside. The grass collection box 20 can then flip again to return to its original position so that it can collect grass clippings. The flipping mechanism 40 enables the automated flipping of the grass collection box 20.

[0056] In some embodiments, the flipping mechanism 40 further includes a pointer 47. The pointer 47 is fixedly connected to the transmission mechanism 43 and rotatably connected to the side of the housing 41 facing away from the push rod 44. Exemplarily, the pointer 47 is fixed to the shaft 4325 of the worm gear 432 facing away from the push rod 44 and located on the side of the cover 412 away from the base 411. An angle marking structure 415 is provided on the housing 41, which is adapted to the swing area of ​​the pointer 47. The angle marking structure 415 is used to characterize the flipping angle of the grass collection box 20. Thus, the flipping angle of the grass collection box 20 is displayed by the relative positional relationship between the pointer 47 and the angle marking structure 415, which makes it convenient for the operator to quickly understand the opening angle of the grass collection box 20 and improves the safety of using the grass collection device 200. In some embodiments, the angle marking structure 415 is provided on the side of the cover 412 of the housing 41 facing away from the base 411. The angle marking structure 415 includes at least one of angle scale lines and angle scale values. The angle marking structure 415 can also be a flipping angle marking, such as maximum flipping angle, moderate flipping angle, minimum flipping angle, etc. In some embodiments, the angle marking structure 415 can be adapted to the amount of grass collected in the grass collection box 20, for example, the amount of grass collected can be matched with the flipping angle, thereby improving the automatic grass unloading efficiency of the grass collection device 200. The angle marking structure 415 can be set according to the actual needs of the operator, and this utility model does not impose specific limitations.

[0057] Exemplarily, in this embodiment, the housing 41 further includes a protective cover 413. The protective cover covers at least a portion of the cover 412 and encloses the pointer. The protective cover 413 is located on the side of the cover 412 opposite to the base 411 and covers the pointer 47, thereby preventing external debris and water from entering the housing 41 and preventing operator misoperation, protecting the components inside the housing 41 from damage, improving safety performance, and enhancing the aesthetic appearance. The protective cover 413 is fixed to the cover 412. The protective cover 413 can be fixed to the cover 412 by, but is not limited to, fasteners (e.g., screws, bolts, or rivets). Exemplarily, in this embodiment, the protective cover 413 encloses both the cover 412 and the base 411. The protective cover 413 and the main body 10 enclose a sealed cavity 402. The cover 412 and the base 411 are disposed within the sealed cavity 402 to seal the components disposed on the cover 412 and the base 411, thereby preventing external debris and water from entering the housing 41 and preventing operator misoperation, protecting the components inside the housing 41 from damage, improving safety performance, and enhancing aesthetics. In some embodiments, the protective cover 413 is configured as a transparent structure for ease of processing and improved visual effect. In some embodiments, the portion of the protective cover 413 corresponding to the swing area of ​​the pointer 47 and the portion corresponding to the angle marking structure 415 are configured as transparent structures. The portion of the protective cover 413 corresponding to the swing area of ​​the pointer 47 and the portion of the protective cover 413 corresponding to the angle marking structure 415 can be spaced apart or at least partially overlapped.

[0058] For example, in this embodiment, the portion of the protective cover 413 corresponding to the swing area of ​​the pointer 47 completely overlaps with the portion of the protective cover 413 corresponding to the angle marking structure 415, thereby improving the overall structural compactness. A protrusion 414 is provided at the position of the protective cover 413 corresponding to the swing area of ​​the pointer 47. The protrusion 414 is configured as a transparent structure, allowing the user to observe the angle marking structure 415 corresponding to the pointer 47 through the protective cover 413 to understand the opening angle of the grass collection box 20. For example, in this embodiment, the protrusion 414 is provided with the angle marking structure 415, thereby preventing the pointer 47 from obscuring the angle marking structure 415 and facilitating a more intuitive understanding of the opening angle of the grass collection box 20 by the operator. In some embodiments, the angle marking structure 415 is provided on the side wall of the cover 412 away from the base 411, thereby preventing the angle marking structure 415 from being exposed outside the outer shell 41 and subject to wear. The angle marking structure 415 can be provided on the cover 412 or the protective cover 413 at the position corresponding to the swing area of ​​the pointer 47. Angle marking structure 415 can also be set in the area outside the swing area of ​​pointer 47 of cover 412 or protective cover 413.

[0059] The needle 471 is fixedly connected to the shaft 4325 of the worm gear 432. The pointer 47 includes a needle 471, a needle bar 472, and a needle tail 473 connected in sequence. The needle 471 is fixedly connected to the shaft 4325 of the worm gear 432. The needle 471 is detachably fixedly connected to the shaft 4325 of the worm gear 432. Exemplarily, the needle 471 has a shaped hole 4401 that mates with the shaft 4325 of the worm gear 432, which facilitates assembly and ensures that the needle 471 can rotate with the shaft 4325, improving the stability and reliability of rotation. The cover 412 has a shaft hole through which the shaft 4325 passes. The shaft 4325 extends out of the shaft hole of the cover 412 and is at least partially located in the shaped hole 4401 of the pointer 47, and is interference-fitted with the shaped hole 4401, so that the shaft 4325 of the worm gear 432 can drive the pointer 47 to rotate when it rotates. The irregular hole 4401 can be, but is not limited to, a waist-shaped hole or a semi-circular hole. Exemplarily, the shaft 4325 passes through the pointer 47 and extends beyond the pointer 47 away from the cover 412, and is also provided with a limiting groove 4326 that cooperates with the limiting member 46. The pointer 47 is limited between the limiting member 46 and the cover 412. The limiting member 46 is used to restrict the pointer 47 to be fixed to the shaft 4325, thereby preventing the pointer 47 from detaching from the shaft 4325 and failing to swing with the shaft 4325. This allows the operator to intuitively understand the opening angle of the grass collection box 20 based on the rotation angle of the pointer 47. In some embodiments, the pointer 47 can also be non-detachably fixedly connected to the shaft 4325 of the worm gear 432; this invention does not impose specific limitations.

[0060] The flipping mechanism 40 also includes a sensing component 48 and a processor 49. The sensing component 48 is used to sense the rotational position of the pointer 47 relative to the housing 41 and generate a sensing signal. The processor 49 is connected to the sensing component 48 and is used to receive and control the drive component 42 to stop working according to the sensing signal, thereby achieving precise control of the opening angle of the grass collection box 20, avoiding problems such as transmission failure or transmission gaps in the transmission mechanism 43 that reduce the user experience, and at the same time avoiding damage to the grass collection box 20 and the transmission mechanism 43, thus improving the reliability and safety of the automatic flipping of the grass collection box 20.

[0061] The sensing component 48 includes a first sensing element 481 and two second sensing elements 482. The first sensing element 481 is disposed on the pointer 47, and the two second sensing elements 482 are disposed on the housing 41, corresponding to opposite sides of the swing area of ​​the pointer 47. The pointer 47 can rotate relative to the housing 41 by a preset angle. It should be noted that the preset angle refers to the maximum swing angle of the pointer 47 relative to the housing 41, which is equal to the maximum tilt angle of the grass collection box 20 relative to the main body 10. When the pointer 47 rotates relative to the housing 41 by the preset angle, one of the first sensing element 481 and the second sensing element 482 senses the other and generates a sensing signal. The processor 49 receives the sensing signal and controls the drive unit 42 to stop working according to the sensing signal. One of the first sensing element 481 and the second sensing element 482 is configured as a sensor, and the other is configured as a sensor connected to the processor 49, which is used to sense the sensor. In this embodiment, for example, the first sensor 481 is configured as a sensor element, and the two second sensors 482 are configured as sensors. This allows the connecting cable connected to the second sensors 482 to be fixed relative to the housing 41, thereby shortening the connecting cable and preventing electrical connection abnormalities between the second sensors 482 and the connecting cable caused by movement of the second sensors 482 relative to the pointer 47. This improves the reliability and stability of the detection by the second sensors 482. In some embodiments, the first sensor 481 can be configured as a sensor, and the two second sensors 482 can be configured as sensors elements.

[0062] The first sensor 481 is fixedly disposed relative to the pointer 47, so that the first sensor 481 can rotate synchronously with the pointer 47, improving the accuracy of the second sensor 482 in detecting the rotational position of the first sensor 481 relative to the housing 41. The first sensor 481 is embedded in the pointer 47 and located at the end of the pointer 47 away from the shaft 4325 of the worm gear 432. The tail of the pointer 47 is provided with a slot 4731, in which the first sensor 481 is disposed, simplifying the assembly of the first sensor 481, improving assembly efficiency, reducing the space occupied by the first sensor 481, and making the overall structure of the flipping mechanism 40 more compact. A through hole is provided at the bottom of the slot 4731, thereby facilitating the second sensor 482 to sense the first sensor 481. In some embodiments, the pointer 47 includes a first needle body and a second needle body that are fixed together, and the first sensor 481 is sandwiched between the first needle body and the second needle body, thereby improving the stability and reliability of the connection between the first sensor 481 and the pointer 47.

[0063] The second sensor 482 is disposed within the housing 41 to prevent damage from external moisture or debris, thereby improving the detection accuracy and precision of the second sensor 482 and extending its service life. Specifically, the second sensor 482 is disposed between the protective cover 413 and the cover 412, thus bringing the first sensor 481 closer to the first sensor 481 and improving detection sensitivity. In some embodiments, the second sensor 482 may also be disposed within the mounting cavity 401 formed between the cover 412 and the base 411; this invention does not impose specific limitations. In some embodiments, the housing 41 may not include the protective cover 413.

[0064] The second sensor 482 is used to sense the first sensor 481 to determine the active position of the first sensor 481, and thus determine the flip angle of the push rod 44 and the grass collection box 20. The two second sensors 482 are spaced apart along the rotation direction of the pointer 47 and are located on the side of the cover 412 opposite to the base 411. Specifically, the two second sensors 482 can be located on opposite sides of the swing area of ​​the pointer 47. The first sensor 481 on the pointer 47 can be moved away from one of the second sensors 482 and closer to the other under the drive of the shaft 4325 of the worm gear 432. When the first sensor 481 rotates to a position opposite to the second sensor 482, the second sensor 482 can generate a sensing signal. The processor 49 receives the sensing signal and controls the drive unit 42 to stop driving. Therefore, the drive unit 42 and the sensing unit 48 work together to achieve precise control of the opening angle of the grass collection box 20, avoiding the problem of transmission failure or transmission gap in the transmission mechanism 43, which would reduce the user experience. At the same time, it avoids damage to the grass collection box 20 and the transmission mechanism 43, and improves the reliability and safety of the automatic flipping mechanism 40.

[0065] A positioning groove 403 is provided on the side of the cover 412 away from the base 411. Two second sensors 482 are disposed in the positioning groove 403, so that the second sensors 482 do not increase the size of the flipping mechanism 40 in the thickness direction of the outer shell 41. When the flipping mechanism 40 is disposed on the main body 10 of the grass collecting device 200, the flipping mechanism 40 occupies less space on the grass collecting device 200.

[0066] Exemplarily, the flipping mechanism 40 also includes a circuit board 50. The circuit board 50 is positioned within a positioning groove 403. Both the positioning groove 403 and the circuit board 50 are configured with an arcuate structure. Two second sensors 482 are disposed on the same side of the circuit board 50 facing the pointer 47 and are electrically connected to the circuit board 50. In some embodiments, the processor 49 is disposed on the circuit board 50, thereby simplifying the wiring. In some embodiments, the circuit board 50 and the processor 49 are disposed independently of each other. The circuit board 50 and the processor 49 are connected via a connecting cable, thereby achieving electrical connection between the second sensors 482 and the processor 49. The second sensors 482 may also integrate a wireless communication unit, through which the sensing signal of the second sensors 482 is transmitted to the processor 49 to optimize the wiring and improve space utilization.

[0067] Two second sensors 482 are disposed at opposite ends of the circuit board 50. The central angle of the portion of the circuit board 50 located between the two second sensors 482 is adapted to the flipping angle of the grass collection box 20. The circuit board 50 is positioned within the positioning groove 403 and cooperates with the positioning groove 403. On the one hand, this simplifies the assembly of the circuit board 50 and the second sensors 482 and improves assembly efficiency; on the other hand, the circuit board 50 and the second sensors 482 do not increase the size of the flipping mechanism 40 in the thickness direction of the outer shell 41. When the flipping mechanism 40 is disposed on the main body 10 of the grass collection device 200, the flipping mechanism 40 occupies less space on the grass collection device 200. The bottom wall of the positioning groove 403 is provided with a positioning post, and the circuit board 50 is provided with a positioning hole that cooperates with the positioning post.

[0068] The second sensor 482 is spaced apart from the pointer 47. In other words, the end face of the second sensor 482 facing away from the circuit board 50 is lower than the end face of the end cover facing away from the base 411. The sum of the thickness of the circuit board 50 and the height of the second sensor 482 protruding from the circuit board 50 is less than or equal to the depth of the positioning groove 403, thereby preventing the second sensor 482 from interfering with the rotation of the pointer 47. In some embodiments, the second sensor 482 may slightly extend out of the positioning groove 403, and the cover 412 is provided with a flange corresponding to the position of the pointer 47, so that the pointer 47 and the second sensor 482 are spaced apart to avoid interference.

[0069] In some embodiments, the side of the cover 412 opposite to the base 411 is also provided with a wiring groove 404 that communicates with the positioning groove 403, thereby optimizing the connection line, so that the wiring can be effectively protected, and can be standardized and neat, and improving the stability and reliability of the second sensing element 482.

[0070] The pointer 47 can cooperate with the sensing element 48 to control the rotation of the push rod 44. It is understood that the pointer 47 can cooperate with the sensing element 48 to change the rotation direction of the push rod 44. For example, when the push rod 44 is at a first or second extreme position, the second sensing element 482 can sense the first sensing element 481 and generate a sensing signal. When the second sensing element 482 senses the first sensing element 481, the processor 49 can control the drive element 42 to stop driving, and upon restarting, control the drive element 42 to drive in reverse. It is understood that reversing the drive element 42 can cause the rotation direction of the drive shaft to be opposite to the rotation direction before it stopped, thereby changing the rotation direction of the push rod 44.

[0071] For example, in this embodiment, the first sensing element 481 is a magnetic element, and the second sensing element 482 is a Hall sensor. When the Hall sensor can sense the magnetic induction intensity information of the magnetic element, it generates a corresponding sensing signal. At this time, the Hall sensor can send the generated sensing signal to the processor 49, and the processor 49 can control the drive element 42 to stop driving based on the received sensing signal. In some embodiments, the second sensing element 482 may also include, but is not limited to, a distance sensor, an optical coupler sensor, a pressure sensor, etc. The distance sensor includes, but is not limited to, a displacement sensor, a proximity sensor, and an ultrasonic sensor, etc. In some embodiments, the sensing component 48 may not include the first sensing element 481. For example, when the second sensing element 482 is configured as an optical coupler sensor, the tail 473 of the pointer 47 can act as the first sensing element 481. When the tail 473 of the pointer 47 blocks the optical coupler sensor, the optical coupler sensor generates a sensing signal; when the tail 473 of the pointer 47 exposes the optical coupler sensor, the optical coupler sensor cannot generate a sensing signal.

[0072] When the grass collecting device 200 is in the grass collecting state, the push rod 44 is at the first extreme position and the pointer 47 is at the initial position. When the grass collecting device 200 enters the grass unloading state from the grass collecting state, the push rod 44 swings from the first extreme position to the second extreme position. The magnetic component on the pointer 47 is positioned opposite one of the Hall sensors. After the pointer 47 swings, it drives the magnetic component to rotate to the position opposite the other Hall sensor. The controller controls the drive component 42 to stop working. At this time, the push rod 44 rotates towards the grass collecting box 20 and pushes against the grass collecting box 20, causing the grass collecting box 20 to flip outward relative to the main body 10, so that the grass collecting device 200 is in the grass unloading state, thereby realizing the flipping of the grass collecting box 20 and dumping of grass clippings. When the grass collection device 200 enters the grass collection state from the grass unloading state, when the drive component 42 is restarted, the controller can control the drive component 42 to drive in the reverse direction. At this time, the push rod 44 can rotate in the reverse direction, driving the push rod 44 to move from the second limit position to the first limit position. At this time, the push rod 44 rotates in the direction away from the grass collection box 20 so that the grass collection box 20 flips inward relative to the main body 10, so that the grass collection box 20 returns to the initial position, that is, in the grass collection state.

[0073] The flipping mechanism 40 also includes a buffer 60, which is sandwiched between the pointer 47 and the housing 41. The buffer 60 can buffer the frictional force generated by the rotation of the pointer 47 relative to the cover 412, reducing noise and wear. Exemplarily, in this embodiment, the buffer 60 can be configured as a plastic ring. In some embodiments, the buffer 60 can be configured as an elastic fiber material or sponge material. Exemplarily, in this embodiment, an annular groove 405 is provided on the side of the cover 412 facing away from the base 411. The buffer 60 is disposed in the annular groove 405 and extends out of the annular groove 405 to abut against the pointer 47, so as to better achieve the buffering effect of the buffer 60.

[0074] The sensing component 48 of this utility model includes a first sensing element 481 and a plurality of second sensing elements 482. The first sensing element 481 is disposed on the pointer 47. The worm gear 432 drives the pointer 47 and the first sensing element 481 to rotate. When the first sensing element 481 rotates to a position directly opposite any of the second sensing elements 482, the second sensing element 482 disposed opposite to the first sensing element 481 can sense the first sensing element 481 and generate a sensing signal. The processor 49 receives the sensing signal generated by the second sensing element 482 and controls the drive element 42 to stop driving. The processor 49 is also used to control the drive element 42 to drive in reverse when the drive element 42 is restarted, thereby achieving precise control of the opening angle of the grass collection box 20, avoiding the problem of transmission failure or transmission gap in the transmission mechanism 43, which reduces the user experience, and at the same time avoiding damage to the grass collection box 20 and the transmission mechanism 43, improving the reliability and safety of the automatic flipping of the grass collection box 20.

[0075] The above description is merely a specific implementation of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A roll-over mechanism for rolling over a pickup box of a pickup device, characterized in that include: shell; A driving component, the driving component being disposed on the housing; A transmission mechanism, comprising a worm and a worm wheel meshing with the worm, wherein the worm is connected to the driving member and the worm wheel in a transmission manner; A push rod, one end of which is fixed to the worm gear, and the other end of which is in contact with the grass collection box, is used to drive the grass collection box to rotate.

2. The turnover mechanism according to claim 1, characterized in that The driving component is located at the bottom of the worm, and the worm wheel is located on the side of the worm near the grass collection box.

3. The turnover mechanism according to claim 1, wherein The housing is provided with a mounting cavity, the driving component and the transmission mechanism are mounted on the inner wall of the mounting cavity, and the push rod is rotatably mounted on the outer wall of the mounting cavity.

4. The turnover mechanism according to claim 3, wherein The worm gear includes a tooth body and a shaft protruding from the tooth body. The shaft is rotatably inserted through the outer casing and fixedly connected to the push rod. The tooth body is configured as a toothed gear, and the central angle corresponding to the tooth portion of the tooth body is adapted to the flip angle of the grass collection box.

5. The turnover mechanism of claim 1, wherein The end of the push rod facing away from the worm gear is provided with a guide slide, which is configured as an arc-shaped structure and is used to contact the edge of the grass collection box.

6. A grass collecting device for use with a grass cutting apparatus, the grass collecting device comprising: include: The main body is connected to the body of the mowing equipment, and the main body is provided with a receiving cavity; A grass collection box, which is rotatably connected to the rear of the main body; A grass-collecting mechanism is disposed within the accommodating cavity; The flipping mechanism as described in any one of claims 1 to 5, wherein the flipping mechanism is disposed on the side wall of the main body.

7. The device of claim 6, wherein, The grass collection box is provided with a first adsorption element at the edge facing the main body, and the main body and / or the push rod is provided with a second adsorption element that is magnetically adsorbed to the first adsorption element.

8. The device of claim 7, wherein, The push rod is rotatably disposed on the inner side wall of the accommodating cavity. When the first adsorption element and the second adsorption element are adsorbed and connected, the push rod is housed in the accommodating cavity, and the grass collection box covers the push rod.

9. The device of claim 6, wherein, The top of the main body is provided with a mounting base and a hanging rod connected to the mounting base. The grass collection box is provided with a hook, which is rotatably connected to the hanging rod and detachably connected to the hanging rod.

10. A grass cutting apparatus characterised in that, It includes a body and a flipping mechanism as described in any one of claims 1 to 6 or a grass-collecting device as described in any one of claims 7 to 9, wherein the flipping mechanism or the grass-collecting device is disposed at the tail of the body.

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