Grass collection device and movement apparatus

Abstract

Provided in the present application are a grass collection device (100) and a movement apparatus. The grass collection device comprises a main body (10), a collection component (20) and a support component (30), wherein the collection component is rotatably connected to the main body by means of a first pivot (51); the support component is rotatably connected to the collection component by means of a second pivot (52); when the grass collection device moves in a first direction (X1), the collection component and the support component can rotate synchronously about the first pivot within a preset angle range; and when the grass collection device moves in a second direction (X2), the support component can rotate about the second pivot, the first direction being opposite to the second direction. Using the grass collection device of the present application can prevent a situation in which, when the support component gets stuck in the grass during backward or forward movement of the grass collection device, the resistance to the backward or forward movement of the grass collection device is likely to increase and a lawn is damaged.

Description

Grass collection device and walking equipment

[0001] This application claims priority to Chinese Patent Application No. 202411998988.5, filed with the Chinese Patent Office on December 31, 2024, entitled "Grass Gathering Device and Walking Equipment", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of lawn mowing machinery technology, and in particular to a grass collection device and a walking device. Background Technology

[0003] Grass collection devices are used to collect leaves, grass clippings, and other debris from lawnmowers. A grass collection device consists of a main body, a collection component, and a support component. However, existing grass collection devices, when moving backward or forward, are prone to increased resistance and damage to the lawn when the support component gets stuck in the grass. Summary of the Invention

[0004] This application provides a grass-collecting device and a walking device to solve the technical problem that when the supporting components of the existing grass-collecting device are stuck in the grass during the backward or forward movement, the resistance of the grass-collecting device increases and damages the lawn.

[0005] In a first aspect, this application provides a grass-collecting device, including a main body, a collecting component, and a supporting component. The collecting component is rotatably connected to the main body via a first pivot; the supporting component is rotatably connected to the collecting component via a second pivot; when the grass-collecting device moves along a first direction, the collecting component and the supporting component can rotate synchronously around the first pivot within a preset angle orientation, and the supporting component does not rotate around the second pivot; when the grass-collecting device moves along a second direction, the supporting component can rotate around the second pivot, and the first direction is opposite to the second direction.

[0006] In conjunction with the first aspect, in some implementations of the first aspect, the collecting component includes a support and a roller brush, one end of the support being rotatably connected to the main body via a first pivot, and the other end of the support being rotatably connected to the roller brush via a third pivot; the supporting component includes a swing arm and a roller, one end of the swing arm being rotatably connected to the support via a second pivot, and the other end of the swing arm being rotatably connected to the roller via a fourth pivot.

[0007] In conjunction with the first aspect, in some implementations of the first aspect, the swing arm is located on the side of the bracket facing away from the roller brush.

[0008] In conjunction with the first aspect, in some implementations of the first aspect, along the first direction, the rotation axis of the fourth pivot is located between the rotation axis of the first pivot and the rotation axis of the third pivot.

[0009] In conjunction with the first aspect, in some implementations of the first aspect, in a cross section parallel to the first direction, the line connecting the axis of the first pivot and the axis of the third pivot is a first connecting line, and the line connecting the axis of the second pivot and the axis of the fourth pivot is a second connecting line, wherein the length of the first connecting line is greater than the length of the second connecting line.

[0010] In conjunction with the first aspect, in some implementations of the first aspect, the support includes a main body and an extension, the extension being bent and connected to one end of the main body, the end of the extension facing away from the main body being rotatably connected to the main body, the roller brush being rotatably connected to the end of the main body facing away from the extension, and one end of the swing arm being rotatably connected to the main body and located on the same side of the main body as the extension.

[0011] In conjunction with the first aspect, in some implementations of the first aspect, the grass collecting device further includes a driving member, which is connected to the roller brush and is used to drive the roller brush to rotate relative to the main body. The driving member is mounted on the inner sidewall of the end of the main body near the extension. A mounting protrusion is provided in the middle of the main body, and the swing arm is rotatably connected to the mounting protrusion.

[0012] In conjunction with the first aspect, in some implementations of the first aspect, when the grass collecting device is in a stationary state, the swing arm abuts against the support.

[0013] In conjunction with the first aspect, in some implementations of the first aspect, the grass collecting device further includes an elastic element, one end of which is connected to the bracket, and the other end of which is connected to the swing arm.

[0014] In conjunction with the first aspect, in some implementations of the first aspect, the bracket is provided with a first mounting structure, the swing arm is provided with a second mounting structure, and the two ends of the elastic member are respectively connected to the first mounting structure and the second mounting structure; in a cross section parallel to the first direction, the line connecting the center of the first mounting structure and the center of the second mounting structure is a third line, the line connecting the axis of the second pivot and the axis of the fourth pivot is a second line, and the inclination direction of the third line is opposite to the inclination direction of the second line.

[0015] In conjunction with the first aspect, in some implementations of the first aspect, the elastic element is configured as a tension spring, compression spring, torsion spring, coil spring, or gas spring.

[0016] In conjunction with the first aspect, in some implementations of the first aspect, the swing arm includes two swing rods rotatably connected to the bracket, and the roller is rotatably connected between the two swing rods.

[0017] In conjunction with the first aspect, in some implementations of the first aspect, the swing arm further includes a connecting rod that is bent and connected between the two swing arms, the connecting rod being rotatably connected to the bracket, and the end of each swing arm facing away from the connecting rod being rotatably connected to the roller.

[0018] In conjunction with the first aspect, in some implementations of the first aspect, the connecting rod has a first protrusion on the side near the roller brush, and the swing rod has a second protrusion on the side away from the roller brush. The first protrusion is rotatably connected to the bracket via the second pivot, and the second protrusion is rotatably connected to the roller via the fourth pivot.

[0019] In conjunction with the first aspect, in some implementations of the first aspect, the swing arm further includes a reinforcing rib connecting the side wall of the first protrusion facing the connecting rod and the side wall of the swing arm facing away from the bracket.

[0020] In conjunction with the first aspect, in some implementations of the first aspect, the collecting component includes a support and a roller brush, one end of the support being rotatably connected to the main body via a first pivot, and the other end of the support being rotatably connected to the roller brush via a third pivot; the supporting component is configured as a roller, the roller being rotatably connected to the support via a second pivot, and configured as a D-shaped structure.

[0021] In conjunction with the first aspect, in some implementations of the first aspect, the roller includes a first surface and a second surface connected to both ends of the first surface, the second surface being disposed protruding outward relative to the first surface; when the grass collecting device moves along the first direction, the first surface may be located on the side of the second surface closer to the roller brush in the first direction; when the grass collecting device moves along the second direction, the first surface may be located on the side of the second surface closer to the grass in the height direction of the grass collecting device.

[0022] In conjunction with the first aspect, in some implementations of the first aspect, the roller is rotatably connected to the support via the second pivot near the center of the first surface.

[0023] In conjunction with the first aspect, in some implementations of the first aspect, the roller is configured as one, and the two ends of the roller are respectively rotatably connected to the two side walls of the support in the width direction of the grass collecting device; or, the roller is configured as two, the two rollers are independently arranged, and are respectively rotatably connected to the two side walls of the support in the width direction of the grass collecting device; or, the roller is configured as two, the supporting component further includes a supporting connecting rod, the supporting connecting rod is disposed between the two rollers and fixedly connected to the two rollers, and the distance between the supporting connecting rod and the grass is greater than the distance between the roller and the grass.

[0024] In conjunction with the first aspect, in some implementations of the first aspect, the second pivot is fixedly disposed relative to the support, one of the roller and the second pivot is provided with a limiting groove, and the other of the roller and the second pivot is provided with a limiting protrusion, the limiting protrusion being rotatably confined within the limiting groove to limit the rotation angle of the roller relative to the support.

[0025] In conjunction with the first aspect, in some implementations of the first aspect, the limiting groove includes a first groove sidewall and a second groove sidewall disposed opposite to each other; when the grass collecting device moves along the first direction, the limiting protrusion can stop against the first groove sidewall; when the grass collecting device moves along the second direction, the limiting protrusion can stop against the second groove sidewall.

[0026] Secondly, this application provides a walking device, including a body and a grass-collecting device as described above, wherein the grass-collecting device is connected to the tail of the body.

[0027] The grass-collecting device and walking equipment provided in this application are based on the following configuration: when the grass-collecting device moves along a first direction, the collecting component and the supporting component can rotate synchronously around a first pivot within a preset angular orientation, while the supporting component does not rotate around a second pivot; when the grass-collecting device moves along a second direction, the supporting component can rotate around the second pivot. The first direction is opposite to the second direction. On the one hand, the arrangement of the first and second pivots can reduce the resistance of the walking equipment moving forward or backward on the grass, prevent the collecting component from getting stuck in the grass roots, reduce the resistance of the collecting component, and improve the grass-collecting effect. It also enables the supporting component and the collecting component to pass smoothly over obstacles on the grass, improving the obstacle-crossing performance of the grass-collecting device and reducing damage to the turf. On the other hand, during the movement of the grass-collecting device along the second direction, the supporting component can rotate around the second pivot, so that the center of gravity of the grass-collecting device is lowered relative to the contact surface with the supporting component, thereby improving the grip of the grass-collecting device, avoiding the problem of tipping over, and thus improving the stability and safety of the grass-collecting device. Furthermore, the grass-collecting device can control the working height of the roller brush through the supporting component to improve the grass-collecting effect of the grass-collecting device under different grass conditions. Attached Figure Description

[0028] Figure 1 is a schematic diagram of a partial structure of the grass collection device provided in the first embodiment of this application on a grassland.

[0029] Figure 2 is a side view of a portion of the grass collection device in Figure 1.

[0030] Figure 3 is a schematic diagram of the grass collection device in Figure 1 with the main body omitted.

[0031] Figure 4 is an exploded view of the grass collection device in Figure 3 with the main body omitted.

[0032] Figure 5 is a cross-sectional view of the grass collection device in Figure 2.

[0033] Figure 6 is a schematic diagram of the grass collection device provided in the second embodiment of this application.

[0034] Figure 7 is a schematic diagram of the partial structure of the grass collection device in Figure 6 on the grassland.

[0035] Figure 8 is an exploded view of a partial structure of the grass collection device in Figure 6.

[0036] Figure 9 is a cross-sectional view of the grass collection device in Figure 6.

[0037] Figure 10 is an enlarged view of part I of the grass collection device in Figure 9.

[0038] Key component symbols: Grassland - 1a; Grass stalks - 2a; Grass collection device - 100; Main body - 10; Collection component - 20; Bracket - 21; Support arm - 210; Main body - 211; Extension - 212; Mounting protrusion - 213; First mounting structure - 215; Bearing part - 216; Guide plate - 220; Rib - 221; Roller brush - 23; Roller - 231; Brush bristles - 232; Drive component - 24; Support component - 30; Swing arm - 31; Swing rod - 311; First protrusion - 3111; First positioning groove - 3112; Second mounting structure - 315; Connecting rod - 312; Second protrusion - 3121; Second positioning groove - 3122; Outer convex surface - 3123; Reinforcing rib - 313; Arc-shaped surface - 3131; Roller - 32; First surface - 3201; Second surface - 3202 Third surface - 3203; Support protrusion - 321; Mounting groove - 3210; Limiting protrusion - 322; First positioning seat - 331; First locking element - 332; Second positioning seat - 351; Second locking element - 352; Supporting link - 36; First outer wall - 361; Second outer wall - 362; First pivot - 51; Second pivot - 52; Limiting groove - 521; First groove side wall - 5211; Second groove side wall - 5212; Third pivot - 53; Fourth pivot - 54; Elastic element - 60; Elastic body - 61; Hook and ring - 62; Fixing element - 63; Fixing part - 631; Limiting part - 632; Grass collection box - 70; Flipping mechanism - 90; First connecting line - L1; Second connecting line - L2; Third connecting line - L3; First direction - X1; Second direction - X2; Width direction - Y; Height direction - Z. Detailed Implementation

[0039] The following embodiments of this application will be described in conjunction with the accompanying drawings.

[0040] In the description of the embodiments of this application, 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 application, 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 application, 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 application.

[0041] Please refer to Figures 1 and 2 together. Figure 1 is a schematic diagram of a partial structure of the grass-collecting device 100 provided in the first embodiment of this application on a grassy area 1a; Figure 2 is a side view of a partial structure of the grass-collecting device 100 in Figure 1. The grass-collecting device 100 includes a main body 10, a collecting component 20, and a supporting component 30. The collecting component 20 is rotatably connected to the main body 10 via a first pivot 51. The supporting component 30 is rotatably connected to the collecting component 20 via a second pivot 52. When the grass-collecting device 100 moves along a first direction X1, the collecting component 20 and the supporting component 30 can rotate synchronously around the first pivot 51. When the grass-collecting device 100 moves along a second direction X2, the supporting component 30 can rotate around the second pivot 52, so that the distance between the second pivot 52 and the first pivot 51 decreases, and the distance between the second pivot 52 and the ground contact area of ​​the supporting component 30 decreases. The first direction X1 and the second direction X2 are opposite.

[0042] The grass-collecting device 100 provided in this application embodiment is based on the following configuration: when the grass-collecting device 100 moves along the first direction X1, the collecting component 20 and the supporting component 30 can rotate synchronously around the first pivot 51 within a preset angular orientation, and the supporting component does not rotate around the second pivot; when the grass-collecting device 100 moves along the second direction X2, the supporting component 30 can rotate around the second pivot 52. The first direction X1 is opposite to the second direction X2. On the one hand, the arrangement of the first pivot 51 and the second pivot 52 can reduce the resistance of the walking device moving forward or backward on the grass 1a, and enable the supporting component 30 and the collecting component 20 to smoothly pass through obstacles on the grass 1a. This improves the obstacle-crossing performance of the grass-collecting device 100 and reduces damage to the turf. On the other hand, during the movement of the grass-collecting device 100 along the second direction X2, the support member 30 can rotate around the second pivot 52, so that the center of gravity of the grass-collecting device 100 is lowered relative to the contact surface with the support member 30, thereby improving the grip of the grass-collecting device 100 and avoiding the problem of overturning, thus improving the stability and safety of the grass-collecting device 100. Furthermore, the grass-collecting device 100 can control the working height of the roller brush 23 through the support member 30 to improve the grass-collecting effect of the grass-collecting device 100 under different grass conditions 1a.

[0043] It should be noted that Figure 1 is only intended to schematically illustrate the arrangement of the grass collection devices 100, and is not intended to specifically limit the connection positions, connection relationships, or specific structures of the various components. Figure 1 is merely a schematic diagram of the structure of the grass collection device 100 according to an embodiment of this application, and does not constitute a specific limitation on the grass collection device 100. In other embodiments of this application, the grass collection device 100 may include more or fewer components than shown in Figure 1, or combine certain components, or different components. For example, the grass collection device 100 may also include, but is not limited to, a detection mechanism. The detection mechanism is used to detect the grass collection status parameters of the grass collection device. Please refer to Figures 2, 3, and 4 together. Figure 3 is a structural schematic diagram of the grass collection device 100 in Figure 1 omitting the main body 10; Figure 4 is an exploded schematic diagram of the grass collection device 100 in Figure 3 omitting the main body 10. In this embodiment, the collecting component 20 includes a support 21 and a roller brush 23. One end of the support 21 is rotatably connected to the main body 10 via a first pivot 51, and the other end of the support 21 is rotatably connected to the roller brush 23 via a third pivot 53. The support component 30 includes a swing arm 31 and a roller 32. One end of the swing arm 31 is rotatably connected to the bracket 21 via a second pivot 52, and the other end of the swing arm 31 is rotatably connected to the roller 32 via a fourth pivot 54. Understandably, when the grass-collecting device 100 moves along the first direction X1, the bracket 21 and the swing arm 31 can only rotate synchronously around the first pivot 51. When the grass-collecting device 100 moves along the second direction X2, the bracket 21, together with the roller brush 23, can rotate around the first pivot 51, and the swing arm 31, together with the roller 32, can rotate around the second pivot 52. Furthermore, the rotation direction of the bracket 21 is opposite to that of the swing arm 31. This avoids the problem of the roller brush 23 getting stuck in the grass roots during the grass-collecting device 100's backward or forward movement, reduces the resistance of the roller brush 23, improves the grass-collecting effect, and allows the roller 32 and the roller brush 23 mounted on the bracket 21 to smoothly pass through obstacles, improving the obstacle-crossing performance of the grass-collecting device 100 and reducing damage to the turf.

[0044] For accuracy, all references to directions in this document should be made to Figures 1, 2, and 3. The term "length direction" refers to the length direction of the mowing device, i.e., the front-back direction in Figure 1. The length direction of the grass collecting device 100 includes both forward and backward directions. The term "width direction Y" refers to the direction parallel to the rotation axis of the roller 32 or the rotation axis of the brush 23, i.e., the left-right direction in Figure 3 (where the positive Y-axis is to the right). The term "height direction Z" refers to the direction from the supporting plane of the grass collecting device 100 to its highest protruding part, i.e., the up-down direction in Figure 1 (where the positive Z-axis is up). The length direction, width direction Y, and height direction Z together constitute the three orthogonal directions of the grass collecting device 100. For ease of description, the up-down, left-right, and front-back orientations in this application are relative positions and do not constitute a limitation. The length direction, width direction Y, and height direction Z of the grass collecting device 100 can be customized according to the specific structure of the product and the perspective presented in the accompanying drawings; this application does not impose specific limitations. The tail section refers to the rear end portion of the grass collecting device 100 along its length. The contact surface of the support member 30 refers to the contact surface between the bottom end surface of the support member 30 and the grass stalks 2a on the grassland 1a.

[0045] Exemplarily, in this embodiment, the swing arm 31 is located on the side of the support 21 facing away from the roller brush 23. Specifically, along the first direction X1, the swing arm 31 is located on the front side of the support 21. The first direction X1 is the forward direction of the grass collecting device 100, and the second direction X2 is the backward direction of the grass collecting device 100. It can be understood that with the swing arm 31 located on the front side of the support 21, if the roller 32 and the roller brush 23 are directly rotatably connected to the same support 21, and the roller 32 is configured as a cylindrical roller, then during the backward movement of the grass collecting device 100, the roller 32 is easily stuck by the grass 1a, for example, the roller 32 is stuck by the roots of the grass plants 2a on the grass 1a; or, the roller 32 is stuck by stones or other obstacles on the grass 1a, thereby increasing the resistance of the backward movement of the walking device, and the roller brush 23 will pierce the grass roots and damage the grass plants 2a (i.e., lawn) on the grass 1a. In this embodiment, the roller 32 is oscillatingly connected to the front of the bracket 21 via the swing arm 31. On the one hand, this avoids the problem that the swing arm 31, located behind the roller brush 23, might affect the grass collection function on the grass collection path of the roller brush 23. On the other hand, during the retraction of the grass collection device 100, the roller 32 will experience resistance in the forward direction (i.e., along the forward direction), driving the swing arm 31 to swing forward and upward around the rotation axis of the swing arm 31 under the action of the resistance component. The force transmitted from the swing arm 31 to the bracket 21 drives the bracket 21 to swing backward and upward relative to the main body 10. This avoids the problem that when the roller 32 is stuck in the grass 1a during the retraction of the grass collection device 100, the resistance of the walking device increases, and the roller brush 23 may get stuck in the grass roots and damage the lawn. This allows the roller 32 and the roller brush 23 mounted on the bracket 21 to pass through obstacles smoothly, improving the obstacle-crossing performance of the grass collection device 100, and reducing the resistance of the roller brush 23 and the damage to the turf caused by the roller brush 23. During the forward movement of the grass collecting device 100, the roller 32 will be subjected to resistance in the backward direction (i.e., the reversing direction), which will drive the swing arm 31 and the bracket 21 that abuts against the swing arm 31 to swing backward and upward around the rotation axis of the swing arm 31 under the action of the resistance component force, thereby realizing the lifting of the roller 32 and the roller brush 23, avoiding the problem of the roller brush 23 contacting the grass too deeply and scraping the turf, so as to reduce the damage of the roller brush 23 to the turf, and reduce the resistance of the roller brush 23, so as to reduce the probability of overload and stall of the drive component 24.

[0046] Understandably, when the swing arm 31 is located at the rear of the bracket 21, if the roller 32 and the brush 23 are directly rotatably connected to the same bracket 21, and the roller 32 is configured as a cylindrical roller, the roller 32 is easily stuck in the grass 1a during the forward movement of the grass collecting device 100, thereby increasing the resistance to the forward movement of the walking device, and the brush 23 may get stuck in the grass roots and damage the lawn. In some embodiments, along the first direction X1, the swing arm 31 is located at the rear of the bracket 21. Therefore, by positioning the swing arm 31 at the rear of the support 21, the roller 32 experiences rearward resistance during the forward movement of the grass-collecting device 100. This resistance drives the swing arm 31 to swing backward and upward around its rotation axis. The force transmitted from the swing arm 31 to the support 21 drives the support 21 to swing forward and upward relative to the main body 10. This avoids the problem of increased resistance to the forward movement of the walking device when the roller 32 gets stuck in the grass 1a, and the roller brush 23 damaging the lawn by getting stuck in the grass roots. This allows the roller 32 and the roller brush 23 mounted on the support 21 to pass smoothly over obstacles, improving the obstacle-crossing performance of the grass-collecting device 100 and reducing the resistance and damage to the turf caused by the roller brush 23. In this embodiment, the swing arm 31 is positioned below the grass-collecting path of the roller brush 23, thus avoiding the problem of the swing arm 31 affecting the grass-collecting function on the grass-collecting path of the roller brush 23. During the retraction of the grass collection device 100, the roller 32 will be subjected to resistance in the forward direction, which will drive the swing arm 31 and the bracket 21 that abuts against the swing arm 31 to swing forward and upward around the rotation axis of the swing arm 31 under the action of the resistance component force, thereby realizing the lifting of the roller 32 and the roller brush 23. This avoids the problem of the roller brush 23 contacting the grass too deeply and scraping the turf, thereby reducing the damage of the roller brush 23 to the turf and reducing the resistance of the roller brush 23, so as to reduce the probability of overload and stall of the drive component 24.

[0047] For example, in this embodiment, along the first direction X1, the rotation axis of the fourth pivot 54 is located between the rotation axis of the first pivot 51 and the rotation axis of the third pivot 53. Therefore, because the rotation axis of the fourth pivot 54 is located between the rotation axes of the first pivot 51 and the third pivot 53, the force transmitted from the swing arm 31 to the support 21 can be used more to drive the support 21 to swing backward and upward relative to the main body 10, allowing the roller 32 and the roller brush 23 mounted on the support 21 to smoothly pass over obstacles, improving the obstacle-crossing performance of the grass-collecting device 100 and reducing damage to the turf. Of course, in some embodiments, the rotation axis of the roller 32 and the rotation axis of the support 21 are aligned in the height direction Z of the grass-collecting device 100; or, the rotation axis of the fourth pivot 54 is located in front of the rotation axis of the first pivot 51 in the forward direction of the grass-collecting device 100 and close to the rotation axis of the fourth pivot 54. This embodiment does not specifically limit the specific configuration.

[0048] For example, in this embodiment, within a cross section parallel to the first direction X1, the line connecting the axis of the first pivot 51 and the axis of the third pivot 53 is the first connecting line L1, and the line connecting the axis of the second pivot 52 and the axis of the fourth pivot 54 is the second connecting line L2. The length of the first connecting line L1 is greater than the length of the second connecting line L2. Therefore, based on the relatively long lever arm connecting the support 21 to the main body 10 and the roller brush 23, and the relatively short lever arm connecting the two connection points of the swing arm 31 to the support 21 and the roller 32, the support 21 can smoothly pass through obstacles with only a small rotation angle relative to the main body 10. This saves the space required for the support 21 to swing relative to the main body 10, improves the overall compactness of the grass collecting device 100, and avoids the problem of excessive opening angle between the swing arm 31 and the support 21 causing a large collision force when the swing arm 31 and the support 21 reset under gravity.

[0049] Referring to Figure 4, it should be noted that the term "axis center" refers to the center point of rotation of a rotating element, which is located on the rotation axis of the rotating element. For example, in the embodiments of this application, the axis center of the first pivot 51 can be a point located within a cross section perpendicular to the central axis of the first pivot 51; the axis center of the second pivot 52 can be a point located within a cross section perpendicular to the central axis of the second pivot 52; the axis center of the third pivot 53 can be a point located within a cross section perpendicular to the central axis of the third pivot 53; and the fourth pivot 54 is a point located within a cross section perpendicular to the central axis of the fourth pivot 54.

[0050] The support 21 includes a main body 211 and an extension 212. The extension 212 is bent and connected to one end of the main body 211. The end of the extension 212 facing away from the main body 211 is rotatably connected to the main body 10. The roller brush 23 is rotatably connected to the end of the main body 211 facing away from the extension 212. One end of the swing arm 31 is rotatably connected to the main body 211 and is located on the same side of the main body 211 as the extension 212. Therefore, on the one hand, by setting the extension 212 to be bent and connected to one end of the main body 211 so that the support 21 is roughly L-shaped, the main body 211 and the extension 212 can disperse stress when the support 21 is subjected to external force, thereby improving the stability and support of the support 21, and allowing the support 21 to have a larger swing range, thus improving the grass collection effect of the roller brush 23; on the other hand, by placing the swing arm 31 and the extension 212 on the same side of the main body 211, the swing arm 31 can make more efficient use of space, reduce the occupied area, and avoid the problem of motion interference between the rotatable part of the swing arm 31 and the rotatable support 21, thereby improving the stability of the grass collection device 100 and improving the overall compactness of the grass collection device 100. Therefore, on the one hand, the installation of the protrusion 213 can avoid the problem of motion interference between the rotatable part of the swing arm 31 and the rotatable roller 32 and the rotatable brush 23, thereby improving the stability of the grass collection device 100 and the compactness of the overall structure of the grass collection device 100; on the other hand, the drive member 24 can limit the maximum swing angle of the swing arm 31 relative to the bracket 21, and ensure that the roller 32 installed on the swing arm 31 can still contact the ground under the action of gravity, and that the brush 23 will not be too high off the ground to affect the grass collection effect, nor too low off the ground to sink into the grass roots, thus preventing the brush 23 from scraping the turf.

[0051] The grass collection device 100 also includes a drive member 24. The drive member 24 is connected to the roller brush 23 and is used to drive the roller brush 23 to rotate relative to the main body 211. The drive member 24 is installed on the inner wall of the end of the main body 211 near the extension 212, and a mounting protrusion 213 is provided in the middle of the main body 211. The swing arm 31 is rotatably connected to the mounting protrusion 213. Thus, on the one hand, the mounting protrusion 213 can avoid the problem of motion interference between the rotatable part of the swing arm 31 and the rotatable roller brush 23, thereby improving the stability of the grass collection device 100 and improving the compactness of the overall structure of the grass collection device 100; on the other hand, the drive member 24 can limit the maximum swing angle of the swing arm 31 relative to the bracket 21, and ensure that the roller 32 installed on the swing arm 31 can still contact the ground under the action of gravity, and that the roller brush 23 is not too high off the ground to affect the grass collection effect, nor too low off the ground to sink into the grass roots, preventing the roller brush 23 from scraping the turf. In other words, the support component 30 can only rotate a preset angle around the second pivot 52.

[0052] Please refer to Figure 2 again. When the grass collecting device 100 is stationary, the swing arm 31 rests against the support 21. Therefore, when the grass collecting device 100 is stationary, the swing arm 31 can rest against the support 21 under the action of gravity, thereby avoiding the problem of collision caused by the gap between the swing arm 31 and the support 21 during the forward or backward movement of the grass collecting device 100, thus improving the stability and safety of the grass collecting device 100.

[0053] In some embodiments, the grass collecting device 100 further includes an elastic element 60. One end of the elastic element 60 is connected to the support 21, and the other end is connected to the swing arm 31. Thus, by providing the elastic element 60, which connects the support 21 and the swing arm 31, the elastic element 60 can clamp the swing arm 31 against the support 21 through its elastic force, reducing the rigid impact on the grass collecting device 100 and thereby improving its stability and safety. Of course, in some other embodiments, the grass collecting device 100 may not include the elastic element 60. Specifically, when the grass collecting device 100 is stationary, the elastic element 60 is in a compressed or uncompressed state, causing the swing arm 31 to abut against the support 21. Therefore, during forward or backward movement, the swing arm 31 is clamped against the support 21 under the elastic force of the elastic element 60, thereby reducing the rigid impact on the grass collecting device 100 and further improving its stability and safety. When the grass collecting device 100 is moving forward or backward, if the roller 32 is stuck by the grass 1a, the swing arm 31 and the support 21 move towards each other, and the elastic element 60 is in a stretched state. After the grass collecting device 100 passes the obstacle, the elastic element 60 returns to its original shape, and the swing arm 31 is clamped to the support 21 under the action of the elastic force generated by the elastic element 60.

[0054] In some embodiments, the bracket 21 is provided with a first mounting structure 215, the swing arm 31 is provided with a second mounting structure 315, and the two ends of the elastic member 60 are respectively connected to the first mounting structure 215 and the second mounting structure 315. In a cross section parallel to the first direction X1, the line connecting the center of the first mounting structure 215 and the center of the second mounting structure 315 is the third connecting line L3, the line connecting the axis of the second pivot 52 and the axis of the fourth pivot 54 is the second connecting line L2, and the inclination direction of the third connecting line L3 is opposite to the inclination direction of the second connecting line L2. Thus, on the one hand, the elastic element 60 can realize the reset movement of the swing arm 31 and the support 21. For example, during the retraction of the grass collection device 100, the roller 32 will apply a forward and upward swinging force to the swing arm 31. The elastic element 60 can provide a rightward and downward clamping force to the swing arm 31 and the support 21. The clamping force makes the swing arm 31 and the support 21 reset to the clamped state during the forward movement of the grass collection device 100. Thus, the grass collection device 100 can adapt to different grass 1a to achieve a good grass collection effect, and it is also convenient for the swing arm 31 and the roller 32 to adapt to the scenario where the roller 32 is stuck by the grass 1a again when the grass collection device 100 retracts. On the other hand, based on the fact that the tilt direction of the third connecting line L3 is opposite to the tilt direction of the second connecting line L2, the elastic reset force of the elastic element 60 and the torque force of the swing arm 31 are approximately collinear, which improves the stability of the reset of the swing arm 31.

[0055] Exemplarily, in this embodiment, both ends of the elastic member 60 are detachably fixed to the first mounting structure 215 and the second mounting structure 315 by means of fixing members 63, thereby facilitating the assembly, disassembly, and maintenance of the elastic member 60 with the bracket 21 and the swing arm 31, and providing flexibility in use. Specifically, the elastic member 60 includes an elastic body 61 and two hooks 62. The two hooks 62 are respectively disposed at both ends of the elastic body 61. The fixing member 63 includes a fixing part 631 and a limiting part 632 connected to one end of the fixing part 631. The fixing part 631 passes through the hooks 62 and locks to the first mounting structure 215 or the second mounting structure 315, and the limiting part 632 is used to press the hooks 62 onto the bracket 21 or the swing arm 31. Of course, in some embodiments, the elastic member 60 can also be installed on the bracket 21 and the swing arm 31 by other fixing structures, and this application embodiment does not specifically limit this. Of course, in some embodiments, one end of the elastic member 60 can also be integrally formed with the bracket 21 or the swing arm 31.

[0056] For example, in this embodiment, the elastic element 60 is configured as a tension spring. Of course, in some embodiments, the elastic element 60 may also be configured as, but is not limited to, a compression spring, torsion spring, coil spring, or gas spring; other elastic structures for providing elastic restoring force are also applicable to this application. Thus, the elastic element 60 can provide torque for clamping between the swing arm 31 and the bracket 21, preventing the swing arm 31 from colliding with the bracket 21, reducing the rigid impact on the grass collecting device 100, and extending the service life of the grass collecting device 100.

[0057] Please refer again to Figures 3 and 4. The swing arm 31 includes two swing rods 311. The two swing rods 311 are rotatably connected to the bracket 21, and the roller 32 is rotatably connected between the two swing rods 311. Thus, the roller 32 is connected to the bracket 21 via the two swing rods 311, thereby improving the reliability and stability of the connection between the roller 32 and the swing arm 31, and ensuring that the swing arm 31 experiences uniform force during swinging, making it less prone to deformation. Specifically, one end of the swing rod 311 is rotatably connected to the mounting protrusion 213 of the bracket 21, and the other end of the swing rod 311 is rotatably connected to the roller 32. Of course, in some embodiments, the swing arm 31 may include only one swing rod 311; this application does not impose specific limitations on this embodiment.

[0058] In some embodiments, the swing arm 31 further includes a connecting rod 312. The connecting rod 312 is bent and connected between the two swing arms 311. The connecting rod 312 is rotatably connected to the bracket 21, and the end of each swing arm 311 facing away from the connecting rod 312 is rotatably connected to the roller 32. Thus, the two swing arms 311 are connected together by the connecting rod 312, thereby improving the overall structural strength of the swing arm 31, increasing the integration of the swing arm 31, and facilitating the assembly of the swing arm 31 with the bracket 21 and the roller 32.

[0059] The connecting rod 312 is fixedly connected to the two swing arms 311. In this embodiment, the connecting rod 312 and the two swing arms 311 are integrally formed, thereby improving the overall structural strength of the swing arm 31, improving the stability of the swing arm 31 driving the roller 32 to swing relative to the support 21, improving assembly efficiency, improving the integration of the swing arm 31, and resulting in a simple and compact structure. The two swing arms 311 are respectively bent and connected to the two ends of the connecting rod 312. Specifically, each swing arm 311 is connected to the end of the connecting rod 312 and bent toward one side of the roller 32. Of course, in some embodiments, the connecting rod 312 and the two swing arms 311 can also be detachably fixedly connected; this application embodiment does not specifically limit this.

[0060] In some embodiments, the connecting rod 312 has a first protrusion 3111 on the side near the roller brush 23, and the swing arm 311 has a second protrusion 3121 on the side away from the roller brush 23. The first protrusion 3111 is rotatably connected to the bracket 21 via a second pivot 52. The second protrusion 3121 is rotatably connected to the roller 32 via a fourth pivot 54. Thus, by having the first protrusion 3111 and the second protrusion 3121 protrude in opposite directions, the problem of motion interference between the rotatable part of the swing arm 31 and the rotatable roller 32 is avoided, thereby improving the stability of the grass collecting device 100 and the overall compactness of the grass collecting device 100.

[0061] In some embodiments, the first protrusion 3111 and the second protrusion 3121 are configured as arc-shaped protrusions. Thus, on the one hand, the arc-shaped protrusions can increase the structural stability of the swing arm 31, and the arc structure can evenly distribute pressure, reducing stress concentration, thereby improving the stability of the swing arm 31's swinging and rolling rotation; on the other hand, it reduces the risk of the first protrusion 3111 and the second protrusion 3121 colliding with obstacles or getting entangled in weeds, and weakens the sharpness of the spatial angles, improving aesthetics.

[0062] In this embodiment, along the width direction Y of the grass collecting device 100, two mounting protrusions 213 are located between two first protrusions 3111, thereby avoiding motion interference between the rotatable part of the swing arm 31 and the rotatable support 21, thus improving the stability of the grass collecting device 100 and the compactness of the overall structure of the grass collecting device 100. Of course, in some embodiments, along the width direction Y of the grass collecting device 100, the two first protrusions 3111 are located between two mounting protrusions 213, and this application embodiment does not make specific limitations.

[0063] In some embodiments, the swing arm 31 further includes a reinforcing rib 313, which connects the side wall of the first protrusion 3111 facing the connecting rod 312 and the side wall of the swing arm 311 facing away from the bracket 21. Thus, on the one hand, the reinforcing rib 313 can enhance the structural strength of the free end of the swing arm 311 and extend the service life of the swing arm 31; on the other hand, the reinforcing rib 313 is disposed on the side wall of the swing arm 311 facing the connecting rod 312, thereby preventing the reinforcing rib 313 from interfering with ground obstacles.

[0064] In this embodiment, the side wall of the reinforcing rib 313 facing away from the swing arm 311 is configured as an arc-shaped surface 3131, thereby preventing weeds from getting tangled at the connection between the roller 32 and the swing arm 31, improving the smoothness and reliability of the rolling rotation. The second protrusion 3121 includes an outwardly convex surface 3123, and the arc-shaped surface 3131 and the outwardly convex surface 3123 are smoothly connected, so that the second protrusion 3121 can automatically and efficiently remove weeds, effectively avoiding the problem of weed entanglement.

[0065] For example, in this embodiment, the support component 30 further includes a first positioning seat 331 and a second positioning seat 351. The first positioning seat 331 is fixedly connected to the second pivot 52 and detachably connected to the first protrusion 3111 via a first locking member 332. The second positioning seat 351 is fixedly connected to the fourth pivot 54 and detachably connected to the second protrusion 3121 via a second locking member 352. Thus, the swing arm 31 is detachably connected to the bracket 21 and the roller 32 via the first locking member 332 and the second locking member 352, facilitating assembly, maintenance, and replacement of the swing arm 31, bracket 21, and roller 32, and providing flexibility in use. The first positioning seat 331 is integrally formed with the second pivot 52, and the second positioning seat 351 is integrally formed with the fourth pivot 54, thereby improving the connection strength between the first positioning seat 331 and the second pivot 52, and enhancing the reliability and safety of the rotation of the swing arm 31 and the roller 32.

[0066] Exemplarily, in this embodiment, the first positioning seat 331 is detachably connected to the swing arm 311 via a locking structure. Along the width direction Y of the grass collecting device 100, a fixing post is provided on the side wall of the swing arm 311 facing away from the roller 32. The fixing post is provided with a locking hole. The first positioning seat 331 is provided with a through hole through which the locking structure passes. The locking structure passes through the through hole and locks itself in the locking hole, thereby achieving a fixed connection between the swing arm 31, the bracket 21, and the roller brush 23. Of course, in some embodiments, the swing arm 31, the bracket 21, and the roller 32 can also be rotatably connected via other mounting structures; this application embodiment does not specifically limit this.

[0067] In some embodiments, the first protrusion 3111 is provided with a first positioning groove 3112 that cooperates and is fixed with the first positioning seat 331, and the second protrusion 3121 is provided with a second positioning groove 3122 that cooperates and is fixed with the second positioning seat 351. Thus, on the one hand, the problem of interference between the first positioning seat 331 and the second positioning seat 351 protruding and ground obstacles is avoided, and obstacles are prevented from getting tangled on the second pivot 52 and the fourth pivot 54, affecting the rotation of the support 21 and the swing arm 31, thereby improving the stability of the grass-collecting device 100; on the other hand, the first positioning groove 3112 and the second positioning groove 3122 can play a role in positioning and assembling the first positioning seat 331 and the second positioning seat 351, improving assembly efficiency and assembly yield.

[0068] Please refer to Figures 1, 4, and 5 together. Figure 5 is a cross-sectional view of the grass collection device in Figure 2. In some embodiments, the bracket 21 includes two support arms 210 and a guide plate 220. The two ends of the roller brush 23 are rotatably connected between the two support arms 210. The guide plate 220 is connected between the two support arms 210 and is arranged around the periphery of the roller brush 23. When the grass collection device 100 is in a stationary state, the swing arm 31 abuts against the guide plate 220 and faces away from the outer wall of the roller brush 23. Therefore, on the one hand, the roller brush 23 and the swing arm 311 are located on different sides of the guide plate 220, thereby avoiding motion interference between the roller brush 23 and the rotatable roller 32 and the rotatable swing arm 31, thus improving the stability and safety of the grass collection device 100; on the other hand, when the grass collection device 100 is stationary, the swing arm 31 can be in contact with the guide plate 220 under the action of gravity, thereby avoiding the problem of collision between the swing arm 31 and the support 21 when the grass collection device 100 moves forward, and the arc shape of the guide plate 220 can absorb the impact force exerted by the swing arm 31 on the support 21 through slight deformation, thus extending the service life of the grass collection device 100; furthermore, the guide plate 220 can guide the movement of the grass or leaves rolled up by the roller brush 23, improving the grass collection effect and efficiency of the grass collection device 100.

[0069] In this embodiment, each support arm 210 is configured with an L-shaped structure. Specifically, each support arm 210 includes a main body 211 and an extension 212. A guide plate 220 is connected to the two support arms 210 at positions corresponding to the main body 211. The guide plate 220 separates the swing arm 31 and the roller brush 23, thereby avoiding the problem of debris such as grass or leaves rolled up by the roller brush 23 contaminating the support component 30, and improving the reliability and smoothness of the rotation of the swing arm 31.

[0070] For example, in this embodiment, the guide plate 220 has multiple ribs 221 on its sidewall facing away from the roller brush 23, thereby improving the structural strength of the guide plate 220. The multiple ribs 221 are arranged in an alternating pattern, thereby further improving the structural strength.

[0071] Please refer to Figures 5 and 6 together. Figure 6 is a structural schematic diagram of the grass collecting device 100 provided in the second embodiment of this application. In some embodiments, the grass collecting device 100 further includes a grass collecting box 70. The grass collecting box 70 is installed at the rear of the main body 10 and is used to collect the grass scraps swept by the roller brush 23. Specifically, the grass collecting box 70 has a grass collecting state and a grass unloading state. In the grass collecting state, the grass collecting box 70 is closed to the main body 10, and the grass collecting box 70 can be used to temporarily store the grass clippings collected by the cleaning brush. In the grass unloading state, the grass collecting box 70 is opened relative to the main body 10 to dump the grass clippings collected in the grass collecting box 70.

[0072] The guide plate 220 extends toward the grass collection box 70. The roller brush 23 rotates clockwise when viewed from left to right. When the grass collection device 100 moves forward in the forward direction, the drive member 24 drives the roller brush 23 to contact the grass stalks 2a on the grass 1a. The roller brush 23 bends due to frictional resistance. When it leaves the grass stalks 2a on the grass 1a, the contacted leaves, withered grass, and other debris have an upward velocity, thus entering the space between the rotating roller brush 23 and the guide plate 220. During this process, the debris thrown up will come into contact with the roller brush 23 multiple times, continuously being accelerated, and finally fly out along the upper edge of the guide plate 220 and enter the grass collection box 70. Therefore, in this embodiment, the guide plate 220 can guide the grass, leaves, and other debris thrown up by the roller brush 23 to move into the grass collection box 70, so that more debris can be placed in the grass collection box 70, improving the grass collection efficiency of the grass collection device 100.

[0073] The roller brush 23 includes a roller 231 and bristles 232 disposed on the roller 231. The bristles 232 can have various shapes, and users can select the shape of the bristles 232 according to the height, thickness and grass species of the lawn to improve the grass collection effect of the grass collection device 100 under different lawn conditions.

[0074] Please refer to Figures 1, 6, and 7 together. Figure 7 is a schematic diagram of a partial structure of the grass-collecting device in Figure 6 on a grass surface. In the second embodiment, the structure of the grass-collecting device 100 is similar to that of the grass-collecting device 100 in the first embodiment. The difference is that, in the second embodiment, the support member 30 in the grass-collecting device 100 is different from the support member 30 in the first embodiment, and the grass-collecting device 100 does not include the elastic member 60. Specifically, the support member 30 does not include the swing arm 31, that is, the support member 30 only includes the roller 32, and the structure of the roller 32 is different from the structure of the roller 32 in the first embodiment.

[0075] Exemplarily, in this embodiment, the collecting component 20 includes a bracket 21 and a roller brush 23. One end of the bracket 21 is rotatably connected to the main body 10 via a first pivot 51, and the other end of the bracket 21 is rotatably connected to the roller brush 23 via a third pivot 53. The support component 30 is configured as a roller 32. The roller 32 is rotatably connected to the bracket 21 via a second pivot 52 and is configured in a D-shape.

[0076] Understandably, when the grass collecting device 100 moves along the first direction X1, the support 21, together with the roller brush 23 and roller 32 mounted on the support 21, can only rotate synchronously around the first pivot 51 within a preset angle range, and the roller 32 does not rotate around the second pivot 52. At this time, the bottom of the roller 32 contacts the grass stalks 2a on the grass 1a, and there is sliding friction between the roller 32 and the grass stalks 2a. Furthermore, the setting of the first pivot 51 can reduce the resistance of the walking device moving along the first direction X1 on the grass. When moving in the second direction X2, the roller 32 can rotate around the second pivot 52, so that the sliding friction between the roller 32 and the grass stalk 2a is converted into rolling friction, thereby reducing the friction between the roller 32 and the grass stalk 2a, and enabling the roller 32 to drive the roller brush 23 to pass through obstacles smoothly, improving the obstacle-crossing performance of the grass collection device 100, reducing the resistance of the roller brush 23 and reducing the damage of the roller brush 23 to the turf, and the setting of the second pivot 52 can reduce the resistance of the walking device moving along the second direction X2 on the grass.

[0077] For example, in this embodiment, the roller 32 includes a first surface 3201 and a second surface 3202 connected to both ends of the first surface 3201. The second surface 3202 protrudes outward relative to the first surface 3201. When the grass collecting device 100 moves along the first direction X1, the first surface 3201 may be located on the side of the second surface 3202 closer to the roller brush 23 in the first direction X1; when the grass collecting device 100 moves along the second direction X2, the first surface 3201 may be located on the side of the second surface 3202 closer to the grass in the height direction Z of the grass collecting device 100. Therefore, as the grass collecting device 100 moves along the second direction X2 (the backward direction in Figure 7), the grass stalks 2a exert resistance on the roller 32 along the first direction X1 (the forward direction in Figure 7), and drive the roller 32 to generate torque, so that the roller 32 rotates around the second pivot 52, and the distance between the roller 32 and the grass 1a increases, thereby reducing the contact between the roller 32 and the grass roots of the grass stalks 2a on the grass 1a, thus reducing the resistance of the grass collecting device 100 moving along the second direction X2, and avoiding the problem of the roller brush 23 getting stuck in the grass roots and damaging the lawn. This allows the roller 32 to drive the roller brush 23 to pass through obstacles smoothly, improving the obstacle-crossing performance of the grass collecting device 100, and reducing the resistance of the roller brush 23 and the damage to the turf caused by the roller brush 23. During the movement of the grass collecting device 100 along the first direction X1, the roller 32 will be resisted by the second direction X2, and drive the bracket 21 together with the roller 32 and the roller brush 23 mounted on the bracket 21 to rotate backward and upward around the first pivot 51. The roller 32 does not rotate around the second pivot 52, thereby enabling the roller 32 to pass over the grass obstacle 1a and avoiding the problem of the roller brush 23 contacting the grass too deeply and scraping the turf. This reduces the damage of the roller brush 23 to the turf and reduces the resistance of the roller brush 23, thereby reducing the probability of overload and stall of the drive component 24 and reducing the resistance of the grass collecting device 100 moving along the first direction X1.

[0078] Of course, in some embodiments, when the grass collecting device 100 moves along the first direction X1, the first surface 3201 may be located on the side of the second surface 3202 away from the roller brush 23 in the first direction X1. Thus, as the grass collecting device 100 moves along the first direction X1 (i.e., the forward direction), the grass stalks 2a exert resistance on the roller 32 along the second direction X2 (i.e., the backward direction) and drive the roller 32 to generate torque, so that the roller 32 rotates around the second pivot 52. This avoids the problem that when the roller 32 is stuck by the grass 1a during the forward movement of the grass collecting device 100, the forward resistance of the walking device increases, and the roller brush 23 gets stuck in the grass roots and damages the lawn. In this way, the roller 32 can drive the roller brush 23 to pass through obstacles smoothly, improving the obstacle-crossing performance of the grass collecting device 100, and reducing the resistance of the roller brush 23 and the damage to the turf caused by the roller brush 23. During the process of the grass collecting device 100 along the second direction X2, the roller 32 will be resisted by the first direction X1, and drive the bracket 21 together with the roller 32 and the roller brush 23 mounted on the bracket 21 to rotate forward and upward around the first pivot 51. This allows the roller 32 to pass over the grass obstacle 1a and avoids the roller brush 23 from contacting the grass too deeply and scraping the turf, thereby reducing the damage of the roller brush 23 to the turf and reducing the resistance of the roller brush 23, so as to reduce the probability of overload and stall of the drive component 24.

[0079] For example, in this embodiment, the roller 32 is disposed in front of the roller brush 23 along the forward direction of the grass collecting device 100. This avoids the problem of the roller 32 affecting the grass collecting function on the grass collecting path of the roller brush 23 if it is disposed behind the roller brush 23. Of course, in some embodiments, the roller 32 may also be disposed behind the roller brush 23; this application does not specifically limit this.

[0080] In some embodiments, the roller 32 is rotatably connected to the support 2 near the center of the first surface 3201 via a second pivot 52. This reduces energy consumption during the rotation of the roller 32 around the second pivot 52 and improves the smoothness of the roller 32's rotation around the second pivot 52, thus reducing the swaying and vibration of the grass-collecting device 100. Furthermore, the location of the roller 32 at the center of the first surface 3201 increases the overall strength and rigidity of the roller 32 and lowers the center of gravity of the grass-collecting device 100 as it moves along the second direction X2, thereby improving the grip of the grass-collecting device 100, preventing overturning, and ultimately enhancing the stability and safety of the grass-collecting device 100 as it moves along the second direction X2.

[0081] For example, in this embodiment, two rollers 32 are provided. The support component 30 also includes a support rod 36. The support rod 36 is disposed between the two rollers 32 and fixedly connected to the two rollers 32. The distance between the support rod 36 and the grass 1a is greater than the distance between the rollers 32 and the grass 1a. Thus, on the one hand, by setting the distance between the support rod 36 and the grass 1a to be greater than the distance between the rollers 32 and the grass 1a, the contact between the support rod 36 and the grass roots of the grass plants 2a is reduced, the friction between the support component 30 and the grass plants 2a is reduced during the forward or backward movement of the grass collecting device 100, and the smoothness of the forward and backward movement of the grass collecting device 100 is improved; on the other hand, the synchronous rotation of the two rollers 32 is achieved, which improves the overall structural strength of the two rollers 32 and the integration of the support component 30, facilitates assembly, and reduces the weight of the support component 30.

[0082] Please refer to Figures 6, 7, and 8 together. Figure 8 is an exploded view of a partial structure of the grass-collecting device 100 in Figure 6. The support link 36 has a first outer wall 361 and a second outer wall 362 connected to the first outer wall 361. The first outer wall 361 is in contact with and flush with the second surface 3202. In other words, the first outer wall 361 and the second surface 3202 are connected and coplanar. The second outer wall 362 is configured as an arc-shaped surface, thereby reducing the friction between the support link 36 and the grass stalks 2a during the forward or backward movement of the grass-collecting device 100, and reducing the scraping of the support link 36 against obstacles on the grass 1a, thus extending the service life and safety of the support component 30.

[0083] In some embodiments, a single roller 32 is provided, with its two ends rotatably connected to two side walls of the support 2 in the width direction X of the grass collecting device 100. This simplifies the manufacturing process of the roller 32 and improves its overall structural strength.

[0084] In some other embodiments, two rollers 32 are provided, which are independently arranged and rotatably connected to two side walls in the width direction of the grass collecting device. This simplifies the manufacturing of the rollers 32, saves materials, and reduces production costs.

[0085] Please refer to Figures 6, 9, and 10 together. Figure 9 is a cross-sectional view of the grass-collecting device 100 in Figure 6; Figure 10 is an enlarged view of part I of the grass-collecting device 100 in Figure 9. In some embodiments, the second pivot 52 is fixedly disposed relative to the support 21. One of the roller 32 and the second pivot 52 is provided with a limiting groove 521, and the other of the roller 32 and the second pivot 52 is provided with a limiting protrusion 322. The limiting protrusion 322 is rotatably confined within the limiting groove 521 to limit the rotation angle of the roller 32 relative to the support 21. Therefore, the rotation angle of the roller 32 relative to the support 21 is limited by the cooperation of the limiting protrusion 322 and the limiting groove 521, thereby ensuring that the roller 32 can switch to different postures according to the walking state of the grass collecting device 100, so as to reduce the resistance of the grass collecting device 100 moving forward or backward on the grass; on the other hand, it reduces the error caused by excessive or insufficient rotation of the roller 32, thereby improving the working efficiency of the grass collecting device 100, ensuring that the roller 32 operates within a safe working area, improving the stability and reliability of the grass collecting device 100, and enabling it to adapt to different working environments and task requirements. In other words, the support component 30 can only rotate a preset angle around the second pivot 52. Specifically, the roller 32 can only rotate a preset angle around the second pivot 52.

[0086] For example, in this embodiment, the limiting groove 521 includes a first groove sidewall 5211 and a second groove sidewall 5212 disposed opposite to each other. When the grass collecting device 100 moves along the first direction X1, the limiting protrusion 322 can stop against the first groove sidewall 5211; when the grass collecting device 100 moves along the second direction X2, the limiting protrusion 322 can stop against the second groove sidewall 5212.

[0087] In this embodiment, for example, the outer side wall of the second pivot 52 is provided with a limiting groove 521. The side wall of the roller 32 facing the bracket 21 is provided with a mounting groove 3210, and the side wall of the mounting groove 3210 is provided with a limiting protrusion 322. The second pivot 52 is installed in the mounting groove 3210, and the limiting protrusion 322 is slidably installed in the limiting groove 521.

[0088] Specifically, the roller 32 also includes two third surfaces 3203 connecting the first surface 3201 and the second surface 3202. A support protrusion 321 is provided on the third surface 3203 of the roller 32 facing the bracket 21, and the support protrusion 321 is provided with a mounting groove 3210. The second pivot 52 is inserted into the mounting groove 3210, and the limiting protrusion 322 is slidably mounted in the limiting groove 521. Thus, the provision of the support protrusion 321 facilitates the processing and forming of the roller 32, and facilitates the alignment and assembly of the roller 32 and the second pivot 52. Of course, in some embodiments, the support protrusion 321 can be omitted, that is, the mounting groove 3210 directly penetrates the side wall of the roller 32 facing the bracket 21. The support arm 210 also includes a bearing portion 216. The bracket 21 in the second embodiment has a structure substantially the same as that in the first embodiment. For example, in the second embodiment, the bracket 21 includes two support arms 210 and a guide plate 220 connecting the two support arms 210. The support arm 210 also includes a main body 211 and an extension 212. The support arm 210 also includes a bearing portion 216, which is bent and connected to the main body 211, and extends in the same direction as the extension 212. The bearing portion 216 and the extension 212 are respectively connected to the two ends of the main body 211. A second pivot 52 is fixedly connected to the bearing portion 216. This improves the structural compactness of the collecting component 20 and the support component 30.

[0089] In some embodiments, the grass collection device 100 further includes a flipping mechanism 90. The flipping mechanism 90 is used to drive the grass collection box 70 to flip relative to the main body 10, so as to realize the grass unloading function of the grass collection box 70.

[0090] It should be noted that, in the following description of the second embodiment, detailed descriptions of structures identical to those in the first embodiment are omitted to avoid repetition. The structures and connection arrangements of the various elements in the grass-collecting device 100 of the first embodiment that are identical to those in the grass-collecting device 100 of the second embodiment can be applied to the second embodiment, and will not be repeated here. For example, the structure of the main body 10 in the second embodiment is the same as that of the main body 10 in the first embodiment.

[0091] This application embodiment also provides a walking device. The walking device includes a body and the grass-collecting device 100 as described above. The grass-collecting device 100 is connected to the rear of the body. Optionally, the body can drive the grass-collecting device 100 to move. Specifically, the body includes a frame and drive wheels mounted on the frame. The main body 10 is detachably mounted on the frame, enriching the usage scenarios of the walking device and making it flexible in use. Of course, in some embodiments, the main body 10 and the frame can also be non-detachably connected together. The drive wheels are used to drive the frame together with the grass-collecting device 100 mounted on the frame to move on the ground. The rotation direction of the drive wheels is the same as the rotation direction of the roller 32, so that the roller 32 is used to drive the roller brush 23 to rise and fall with the undulation of the ground, avoiding direct impact between the roller brush 23 and obstacles, pits, protrusions, etc. on the ground, and maintaining a suitable distance between the roller brush 23 and the ground, thereby protecting the roller brush 23 and improving the grass-collecting effect of the roller brush 23.

[0092] The walking device may include, but is not limited to, hand-held, riding, and fully automated intelligent walking machines, etc., and this application does not limit it in this regard. The walking device can move on the ground. For example, the walking device can move on the ground by being pushed by a user. Or, the walking device itself has the ability to move and can move automatically on the ground through a drive mechanism. The walking device can be configured as a lawn mower, harvester, sweeper, sprayer, transport device, etc. Exemplarily, in this embodiment, the walking device is configured as a lawn mower. The walking device also includes a lawn mowing device. A lawn mowing device refers to a device used for lawn care, such as a lawn mower that can be used to trim the lawn and the vegetation around the lawn. A grass collection device 100 is connected to the tail of the lawn mower. The grass collection device 100 is used to collect grass clippings, leaves, and other debris trimmed by the lawn mower. Of course, in some embodiments, the walking device may only include the grass collection device 100.

[0093] The walking device provided in this embodiment adopts the grass collection device 100 provided in this application. Since the support 21, roller brush 23, roller 32 and swing arm 31 of the grass collection device 100 cooperate with each other, the grass collection device 100 can collect fallen leaves and weeds on the grass 1a. It can also adjust the position of the roller 32 and roller brush 23 relative to the ground according to the undulation of the grass 1a, automatically adapting to different heights, thicknesses and grass species of lawns, so as to improve the grass collection effect of the grass collection device 100 under different grass 1a. It can also prevent the roller brush 23 from contacting the grass roots and protect the grass roots. Thus, the grass collection device 100 can cooperate with the main body 10 to mow grass and collect debris on lawns of different heights, thicknesses and grass species, thereby improving the applicability and working performance of the walking device.

[0094] The above description is merely a specific implementation of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A grass-collecting device, characterized in that, The grass collection device includes: main body; A collecting component, which is rotatably connected to the main body via a first pivot; A support component, which is rotatably connected to the collecting component via a second pivot; When the grass collecting device moves along the first direction, the collecting component and the supporting component can rotate synchronously around the first pivot within a preset angle range, and the supporting component does not rotate around the second pivot; when the grass collecting device moves along the second direction, the supporting component can rotate around the second pivot, and the first direction is opposite to the second direction.

2. The grass-collecting device according to claim 1, characterized in that, The collecting component includes a bracket and a roller brush. One end of the bracket is rotatably connected to the main body via a first pivot, and the other end of the bracket is rotatably connected to the roller brush via a third pivot. The supporting component includes a swing arm and a roller. One end of the swing arm is rotatably connected to the bracket via a second pivot, and the other end of the swing arm is rotatably connected to the roller via a fourth pivot.

3. The grass-collecting device according to claim 2, characterized in that, The swing arm is located on the side of the bracket facing away from the roller brush.

4. The grass-collecting device according to claim 2, characterized in that, Along the first direction, the rotation axis of the fourth pivot is located between the rotation axis of the first pivot and the rotation axis of the third pivot.

5. The grass-collecting device according to claim 2, characterized in that, In a cross section parallel to the first direction, the line connecting the center of the first pivot and the center of the third pivot is the first connecting line, and the line connecting the center of the second pivot and the center of the fourth pivot is the second connecting line, the length of the first connecting line being greater than the length of the second connecting line.

6. The grass-collecting device according to any one of claims 2-5, characterized in that, The bracket includes a main body and an extension. The extension is bent and connected to one end of the main body. The end of the extension facing away from the main body is rotatably connected to the main body. The roller brush is rotatably connected to the end of the main body facing away from the extension. One end of the swing arm is rotatably connected to the main body and is located on the same side of the main body as the extension.

7. The grass-collecting device according to claim 6, characterized in that, The grass collection device also includes a drive component, which is connected to the roller brush and is used to drive the roller brush to rotate relative to the main body. The drive component is installed on the inner sidewall of the end of the main body near the extension. A mounting protrusion is provided in the middle of the main body, and the swing arm is rotatably connected to the mounting protrusion.

8. The grass-collecting device according to any one of claims 2-5, characterized in that, When the grass collection device is stationary, the swing arm rests against the support.

9. The grass-collecting device according to any one of claims 2-5, characterized in that, The grass collecting device also includes an elastic element, one end of which is connected to the bracket, and the other end of which is connected to the swing arm.

10. The grass-collecting device according to claim 9, characterized in that, The bracket is provided with a first mounting structure, the swing arm is provided with a second mounting structure, and the two ends of the elastic member are respectively connected to the first mounting structure and the second mounting structure; in a cross section parallel to the first direction, the line connecting the center of the first mounting structure and the center of the second mounting structure is a third line, the line connecting the axis of the second pivot and the axis of the fourth pivot is a second line, and the inclination direction of the third line is opposite to the inclination direction of the second line.

11. The grass-collecting device according to claim 9, characterized in that, The elastic element is configured as a tension spring, compression spring, torsion spring, coil spring, or gas spring.

12. The grass-collecting device according to any one of claims 2-5, characterized in that, The swing arm includes two swing rods, which are rotatably connected to the bracket, and the roller is rotatably connected between the two swing rods.

13. The grass-collecting device according to claim 12, characterized in that, The swing arm also includes a connecting rod, which is bent and connected between the two swing arms. The connecting rod is rotatably connected to the bracket, and the end of each swing arm facing away from the connecting rod is rotatably connected to the roller.

14. The grass-collecting device according to claim 13, characterized in that, The connecting rod has a first protrusion on the side near the roller brush, and the swing rod has a second protrusion on the side away from the roller brush. The first protrusion is rotatably connected to the bracket via the second pivot, and the second protrusion is rotatably connected to the roller via the fourth pivot.

15. The grass-collecting device according to claim 14, characterized in that, The swing arm also includes a reinforcing rib, which connects the side wall of the first protrusion facing the connecting rod and the side wall of the swing arm facing away from the bracket.

16. The grass-collecting device according to claim 1, characterized in that, The collecting component includes a bracket and a roller brush. One end of the bracket is rotatably connected to the main body via a first pivot, and the other end of the bracket is rotatably connected to the roller brush via a third pivot. The supporting component is configured as a roller, which is rotatably connected to the bracket via a second pivot and is configured as a D-shaped structure.

17. The grass-collecting device according to claim 16, characterized in that, The roller includes a first surface and a second surface connected to both ends of the first surface, the second surface being convex outward relative to the first surface; when the grass collecting device moves along the first direction, the first surface may be located on the side of the second surface closer to the roller brush in the first direction; when the grass collecting device moves along the second direction, the first surface may be located on the side of the second surface closer to the grass in the height direction of the grass collecting device.

18. The grass-collecting device according to claim 17, characterized in that, The roller is rotatably connected to the bracket via the second pivot near the center of the first surface.

19. The grass-collecting device according to any one of claims 16-18, characterized in that, The roller is configured as one, with its two ends rotatably connected to the two side walls of the support in the width direction of the grass collecting device; or, the roller is configured as two, with the two rollers independently arranged and rotatably connected to the two side walls of the support in the width direction of the grass collecting device; or, the roller is configured as two, and the supporting component further includes a supporting connecting rod, which is disposed between the two rollers and fixedly connected to the two rollers, with the distance between the supporting connecting rod and the grass being greater than the distance between the roller and the grass.

20. The grass-collecting device according to any one of claims 16-18, characterized in that, The second pivot is fixedly disposed relative to the bracket. One of the roller and the second pivot is provided with a limiting groove, and the other of the roller and the second pivot is provided with a limiting protrusion. The limiting protrusion is rotatably confined within the limiting groove to limit the rotation angle of the roller relative to the bracket.

21. The grass-collecting device according to claim 20, characterized in that, The limiting groove includes a first groove sidewall and a second groove sidewall disposed opposite to each other; when the grass collecting device moves along the first direction, the limiting protrusion can stop against the first groove sidewall; when the grass collecting device moves along the second direction, the limiting protrusion can stop against the second groove sidewall.

22. A walking device, characterized in that, It includes a body and a grass-collecting device as described in any one of claims 1 to 21, the grass-collecting device being connected to the tail of the body.

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