Lawn mower

Abstract

The application discloses a mower, which comprises a cutter composed of at least one blade, a chassis formed with a cutting cavity and a grass discharging cavity, the cutting cavity being used for the cutter to realize cutting operation, the grass discharging cavity being used for discharging the cut grass, the cutting cavity and the grass discharging cavity being communicated by a first outlet, a power unit, the power unit driving the cutter to rotate in the cutting cavity, a rotary plate unit, the rotary plate unit being rotatable to a first position or a second position, when the rotary plate unit is located at the first position, the rotary plate unit blocks the first outlet, and when the rotary plate unit is located at the second position, the first outlet is opened, and the chassis further comprises a first bottom plate, the first bottom plate being at least partially located below the rotary plate unit, and the first bottom plate is matched with the rotary plate unit to limit downward movement of the rotary plate unit. The application solves the problem of blocking rotation in the grass collecting mode.

Description

Technical Field

[0001] This application relates to the field of lawnmower technology, and more particularly to a lawnmower. Background Technology

[0002] The lawnmower includes a housing with a grass-chopping chamber and a discharge port connecting the inside and outside of the chamber. When a plug is installed at the discharge port, the lawnmower is in grass-chopping mode; when no plug is installed, it is in grass-collecting mode. The plug allows switching between grass-chopping and grass-collecting modes. In existing technology, one solution involves a detachable plug installed on the lawnmower, with the plug installed for grass-chopping mode and removed for grass-collecting mode. However, repeatedly installing or removing the plug during switching between modes is inconvenient for the user. Another solution is to use a rotating baffle unit, where a baffle is rotatably attached to the lawnmower's housing. Switching between grass-chopping and grass-collecting modes is achieved by controlling the baffle's position, making operation more convenient.

[0003] Over time, the rotary plate unit may deform or the installation structure may loosen, causing positional displacement. This results in gaps between the rotary plate unit and the housing. Cut grass clippings can then pass through these gaps, causing blockages and affecting the grass collection efficiency.

[0004] This section provides background information related to this application, which is not necessarily prior art. Summary of the Invention

[0005] The purpose of this application is to provide a lawnmower that solves the problem of stalling in the grass collection mode, improves the grass collection effect, and has a simple structure, is easy to operate, and reduces costs.

[0006] To achieve this objective, this application adopts the following technical solution: A lawnmower is provided, comprising a blade consisting of at least one blade; a chassis having a cutting chamber and a grass-discharging chamber, the cutting chamber for the blade to perform cutting operations, and the grass-discharging chamber for discharging grass clippings, the cutting chamber and the grass-discharging chamber being connected by a first outlet; a power unit driving the blade to rotate within the cutting chamber; a rotating plate unit rotatable to a first position or a second position, wherein when the rotating plate unit is in the first position, the rotating plate unit blocks the first outlet; and when the rotating plate unit is in the second position, the first outlet is opened; the chassis further includes a first base plate, the first base plate being at least partially located below the rotating plate unit, the first base plate cooperating with the rotating plate unit to restrict the downward movement of the rotating plate unit. In some possible embodiments, the first base plate contacts or has a gap-like fit with the blocking part.

[0007] In one embodiment, the rotary plate unit includes a rotary plate body, which includes a blocking part and a connecting part connected to each other. The connecting part is rotatably connected to the chassis, and a first base plate is in contact with the blocking part or has a gap fit.

[0008] In one embodiment, the housing and the first bottom plate form a grass discharge chamber, with the first bottom plate disposed on the lower side of the housing, through which the cut grass clippings are discharged.

[0009] In one embodiment, the blocking portion of the rotary plate unit includes a first surface facing the first base plate, the distance between the first surface and the first base plate being greater than or equal to 0 and less than or equal to 4 mm.

[0010] In one embodiment, when viewed from below, the second inner wall of the cutting cavity is substantially circular, and the first inner wall of the cutting cavity is also substantially circular.

[0011] In one embodiment, when the chassis is placed on a horizontal plane, the depth of the cutting cavity of the housing is substantially equal in any cross section passing through the center of the housing or the rotation center of the cutter and perpendicular to the horizontal plane.

[0012] In one embodiment, the chassis further includes a second base plate connected to the first base plate. The second base plate and the first base plate are jointly installed to the housing. The second base plate is also located below the rotating plate unit. The second base plate may also contact the blocking part or have a gap fit.

[0013] In one embodiment, the blocking part is rotatably connected to the inside of the housing, and the rotary plate unit further includes a kicking block protruding from the blocking part.

[0014] In one embodiment, the lawnmower further includes a control component connected to the rotary blade unit. The control component can be switched between at least a locked position and an unlocked position. When the control component is in the locked position, the control component is in a locked state and the rotary blade unit cannot be moved by the control component. When the control component is in the unlocked position, the control component is in an unlocked state and the rotary blade unit can be moved by the control component.

[0015] In one embodiment, the actuation component includes a resilient lever, the resilientness of which causes the actuation component to spring back from an unlocked position to a locked position.

[0016] In one embodiment, a third position is provided between the first position and the second position, and the rotary plate unit can be rotated to the third position so that the first outlet is partially opened.

[0017] The beneficial effects of this application are:

[0018] This application provides a lawnmower in which the rotary blade unit is pressed against a first base plate, thus constraining the rotary blade unit. During prolonged use, this prevents structural deformation or positional drop due to interactions between structures or impacts from grass. It also prevents gaps from forming between the rotary blade unit, the housing, and the first base plate, avoiding the accumulation of cut grass clippings that could cause the rotary blade to become stuck. This results in better performance. The chassis and rotary blade unit of this design have simple structures, facilitating manufacturing and assembly, and reducing costs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a lawnmower provided in a specific embodiment of this application;

[0020] Figure 2 This is an assembly diagram of the chassis and rotary plate unit provided in a specific embodiment of this application;

[0021] Figure 3 This is an assembly diagram of the housing, second base plate, and rotary plate unit provided in a specific embodiment of this application;

[0022] Figure 4 This is a schematic diagram of the shell structure from one perspective, provided by a specific embodiment of this application;

[0023] Figure 5 This is a schematic diagram of the structure of a rotating plate unit in a second position from a specific perspective, provided in a specific embodiment of this application;

[0024] Figure 6 This is a schematic diagram of the structure of the rotary plate unit in the second position from another perspective provided by a specific embodiment of this application;

[0025] Figure 7 This is a schematic diagram of the structure of the rotating plate unit in the first position from the first perspective, provided in a specific embodiment of this application;

[0026] Figure 8 This is a schematic diagram of the structure of the rotary plate unit in the first position from a second perspective, provided in a specific embodiment of this application;

[0027] Figure 9 This is a structural schematic diagram of the first base plate, the second base plate, and the rotating plate unit at the second position provided in a specific embodiment of this application;

[0028] Figure 10 This is a structural schematic diagram of the first base plate, the second base plate, and the rotating plate unit at a first position provided in a specific embodiment of this application;

[0029] Figure 11 This is an exploded view of the first base plate, the second base plate, and the rotating plate unit from a first perspective provided in a specific embodiment of this application;

[0030] Figure 12 This is an exploded view of the first base plate, the second base plate, and the rotating plate unit from a second perspective, provided in a specific embodiment of this application;

[0031] Figure 13 This is an assembly diagram of the first base plate and the second base plate provided in a specific embodiment of this application;

[0032] Figure 14 This is a bottom view of the chassis provided in a specific embodiment of this application;

[0033] Figure 15 yes Figure 14 OO sectional view;

[0034] Figure 16 This is a schematic diagram of the structure of the rotating plate body from a first perspective provided in a specific embodiment of this application;

[0035] Figure 17 This is a schematic diagram of the structure of the rotating plate body from a second perspective, provided in a specific embodiment of this application;

[0036] Figure 18 This is a cross-sectional view of the rotary plate body provided in a specific embodiment of this application;

[0037] Figure 19 This is an assembly diagram of the control components and chassis from a first perspective provided in a specific embodiment of this application;

[0038] Figure 20 yes Figure 19 Enlarged view of point I;

[0039] Figure 21 This is a second-view assembly diagram of the control components and chassis provided in a specific embodiment of this application;

[0040] Figure 22 This is a schematic diagram of the chassis structure with a support provided in a specific embodiment of this application;

[0041] Figure 23 This is a schematic diagram of the assembly of the support and the rotary plate unit from a first perspective, provided in a specific embodiment of this application;

[0042] Figure 24 This is a schematic diagram of the assembly of the support and the rotary plate unit from a second perspective, provided in a specific embodiment of this application.

[0043] Figure 25 This is an exploded view of the rotary plate unit provided in a specific embodiment of this application;

[0044] Figure 26 This is a schematic diagram of the shell structure from another perspective, provided by a specific embodiment of this application;

[0045] Figure 27 This is an assembly diagram of the chassis, power unit, and cutting tools provided in a specific embodiment of this application;

[0046] Figure 28 This is a schematic diagram of the structure of the rotary plate body provided in a specific embodiment of this application;

[0047] Figure 29 This is a cross-sectional view of the rotary plate body provided in a specific embodiment of this application;

[0048] Figure 30 This is a schematic diagram of a control component disengaged from a slot, provided in a specific embodiment of this application;

[0049] Figure 31 This is a schematic diagram of a control component confined to a card slot state according to a specific embodiment of this application;

[0050] Figure 32 This is an exploded view of an operating component of a rotary plate body provided in a specific embodiment of this application;

[0051] Figure 33 This is a schematic diagram of another operating component of the rotary plate body provided in a specific embodiment of this application;

[0052] Figure 34 This is a schematic diagram of another operating component of the rotary plate body provided in a specific embodiment of this application, which is disengaged and confined in the slot state.

[0053] In the picture:

[0054] 100. Lawn mower;

[0055] 1. Chassis; 11. Shell; 111. First inner wall; 112. Second inner wall; 12. Annular plate; 13. Support part; 131. Guide groove; 132. Slot; 14. First bottom plate; 141. Blocking edge; 142. Second surface; 143. First joint; 15. Second bottom plate; 151. Third surface; 152. Second joint; 153. Screw hole; 1A. Cutting cavity; 1B. First outlet; 1C. Grass discharge cavity; 1D. Second outlet;

[0056] 2. Rotary plate unit; 21. Rotary plate body; 211. Blocking part; 2111. First vertical plate; 2112. Second vertical plate; 2113. Horizontal plate; 21131. Flat bottom surface; 2114. First surface; 2115. Front end; 2116. Fourth surface; 212. Connecting part; 22. Anti-kick block; 23. Control assembly; 231. Control lever; 2311. Inverted buckle; 2312. Connecting seat; 232. Handle; 2321. Slot; 2322. Positioning part; 233. Pin; 234. First torsion spring;

[0057] 3. Protective cover;

[0058] 5. Power unit; 6. Cutting tool; 7. Handrail; 8. Drive wheel. Detailed Implementation

[0059] Before explaining any implementation of this application in detail, it should be understood that this application is not limited to its application to the structural details and component arrangements set forth in the following description or shown in the above drawings.

[0060] In this application, the terms "comprising," "including," "having," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0061] In this application, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "and / or" relationship.

[0062] In this application, the terms "connection," "combination," "coupling," and "installation" can refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without the need for an intermediary, while an indirect connection refers to two parts or components each being connected to at least one intermediary, with the connection achieved through the intermediary. Furthermore, "connection" and "coupling" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.

[0063] In this application, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are to include the values ​​and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​that do not use relative terms should also be disclosed as specific values ​​with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.

[0064] In this application, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0065] In this application, the directional terms "upper," "lower," "left," "right," "front," and "rear" are used to describe the orientation and positional relationships shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when an element is mentioned as being connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as upper side, lower side, left side, right side, front side, and rear side not only represent positive orientation but can also be understood as lateral orientation. For example, "below" can include directly below, lower left, lower right, lower front, and lower rear.

[0066] This embodiment provides a lawnmower 100, such as Figure 1 and Figure 27 As shown, it includes a chassis 1, a power unit 5, blades 6, a handle 7, and a drive wheel 8. The handle 7, drive wheel 8, power unit 5, and blades 6 are all mounted on the chassis 1. When the handle 7 is pushed, the chassis 1 moves with the drive wheel 8, and the power unit 5 drives the blades 6 to rotate. As the chassis 1 moves, the blades 6 cut grass. Optionally, the lawnmower 100 also includes a protective cover 3, which is located on the upper side of the chassis 1 and covers the power unit 5, providing protection.

[0067] Specifically, such as Figures 2-14As shown, the chassis 1 includes a housing 11 and a first base plate 14. The first base plate 14 is at least partially located below the rotary plate unit 2. The first base plate 14 cooperates with the blocking part 211, constraining the blocking part 211 and limiting its downward movement. Specifically, the first base plate 14 is connected to the housing 11 and is located below the rotary plate unit 2. The first base plate 14 contacts or has a gap-like fit with the rotary plate unit 2, and the rotary plate unit 2 is pressed against by the first base plate 14, thus constraining it. During long-term use, structural deformation or positional drop will not occur due to interactions between structures or impacts from grass. This prevents excessive gaps between the rotary plate unit 2, the housing 11, and the first base plate 14, avoiding the accumulation of cut grass clippings that could cause the rotary plate unit 2 to stall. The overall performance is good. The chassis 1 and rotary plate unit 2 in this design have simple structures, are easy to manufacture and assemble, and reduce costs.

[0068] In one embodiment, the first base plate 14 is in direct contact with the rotary plate unit 2, preventing grass clippings from getting stuck in the gaps between the rotary plate unit 2, the housing 11, and the first base plate 14. In another embodiment, the first base plate 14 and the rotary plate unit 2 have a clearance fit, with the clearance being less than or equal to 4 mm, thereby controlling the potential gap to a range that minimizes its impact on grass blockage. In yet another embodiment, the gap between the first base plate 14 and the rotary plate unit 2 is less than or equal to 2 mm.

[0069] The first base plate 14 is in contact with or has a gap with the rotating plate unit 2. This gap reduces friction between the first base plate 14 and the rotating plate unit 2, allowing the rotating plate unit 2 to rotate smoothly when changing positions, while also preventing serious clogging. If the first base plate 14 and the rotating plate unit 2 are in direct contact, making both the first base plate 14 and the rotating plate unit 2 from relatively wear-resistant materials and ensuring that the surfaces rubbing against each other are as smooth as possible can also achieve good results.

[0070] Specifically, the housing 11 has a cutting cavity 1A, in which the blade 6 rotates to cut grass. The housing 11 and the first bottom plate 14 form a grass discharge cavity 1C, through which the cut grass clippings are discharged. The first bottom plate 14 is located on the lower side of the housing 11. The cutting cavity 1A and the grass discharge cavity 1C are connected by a first outlet 1B, and the grass discharge cavity 1C is connected to the outside by a second outlet 1D. See details. Figure 14 The power unit 5 drives the blade 6 to rotate in the cutting cavity 1A; the lawnmower 100 also includes a rotary plate unit 2; the rotary plate unit 2 includes a rotary plate body 21, the rotary plate body 21 includes a blocking part 211 and a connecting part 212 connected to each other, the connecting part 212 is rotatably connected to the housing 11, and the connecting part 212 drives the blocking part 211 to rotate.

[0071] In one embodiment, the first base plate 14 is not the grass-discharging base plate forming the grass-discharging cavity 1C; the first base plate 14 can be an additional part mounted on the housing 11 or the grass-discharging base plate. The first base plate 14 can also be integrally formed with the housing 11 or the grass-discharging base plate.

[0072] The chassis 1 has a cutting cavity 1A for the cutting tool 6 to perform cutting operations and a straw discharge cavity 1C for discharging straw shreds. Alternatively, the housing 11 has a cutting cavity 1A for the cutting tool 6 to perform cutting operations and a straw discharge cavity 1C for discharging straw shreds. The cutting cavity 1A and the straw discharge cavity are connected by a first outlet 1B.

[0073] Specifically, such as Figures 3-8 and Figure 14 As shown, the rotary plate unit 2 can be rotated to a first position or a second position. Figure 7 and Figure 8 As shown, when the rotary plate unit 2 is in the first position, the blocking part 211 blocks the first outlet 1B, separating the cutting chamber 1A from the grass discharge chamber 1C, and the lawnmower 100 is in the grass-chopping mode. In the grass-chopping mode, the grass is repeatedly cut by the blades 6 in the cutting chamber 1A. The lift generated by the blades 6 when driven to rotate by the power unit 5 throws the grass upward, and the grass is cut again by the blades 6 when it falls, repeatedly cutting to make the grass more shredded. Figure 5 and Figure 6 As shown, when the rotary plate unit 2 is in the second position, the first outlet 1B is opened, connecting the grass discharge chamber 1C with the cutting chamber 1A, entering the grass collection mode. The grass shredded from the cutting chamber 1A enters the grass discharge chamber 1C through the first outlet 1B, and is then discharged through the second outlet 1D. Specifically, the grass can be discharged directly from the second outlet 1D, or it can enter the grass collection bag or be discharged directly to the outside of the mower 100. The connecting part 212, along with the blocking part 211, is rotatably connected to the chassis 1 and can switch between the first and second positions to achieve switching between the grass shredding mode and the grass collection mode. This eliminates the need for repeated disassembly and assembly, making operation convenient.

[0074] In some embodiments, a plurality of positions are provided between the first position and the second position, and the rotary plate unit 2 can be rotated to one of the plurality of positions to adjust the opening size of the first outlet 1B. Specifically, multiple gears can be set, and the multiple gears correspond one-to-one with the multiple positions. When the rotary plate unit 2 is adjusted to a gear, the first outlet 1B is opened to the corresponding size. The specific number of gears can be set according to the actual situation and is not limited. Preferably, a third position is provided between the first position and the second position, and the rotary plate unit 2 can be rotated to the third position so that the blocking part 211 blocks part of the first outlet 1B, and the other part of the first outlet 1B is opened, so as to achieve the effect of partial grass collection and partial grass drop. Further, the third position is set between the first position and the second position. When the rotary plate unit 2 is rotated to the third position, the blocking part 211 blocks half of the first outlet 1B.

[0075] In some embodiments, the connecting portion 212 and the blocking portion 211 can be an integral structure or a separate structure.

[0076] In this embodiment, as Figures 9-13 As shown, the blocking part 211 includes a first surface 2114 facing the first base plate 14. The distance between the first surface 2114 and the first base plate 14 is less than or equal to 2mm. When the rotating plate body 21 is in the first position or during rotation, the first surface 2114 of the blocking part 211 is pressed against the first base plate 14, so that the rotating plate body 21 is constrained. During long-term use, it will not cause structural deformation or position drop due to gravity, interaction between structures or impact of grass, etc., and prevents gaps from forming between the rotating plate body 21 and the shell 11 and the first base plate 14. It also avoids the cut grass clippings from getting stuck in the gaps and causing the rotating plate body 21 to become blocked. The effect of use is better.

[0077] In one embodiment, the first surface 2114 is in direct contact with the first base plate 14. In another embodiment, the distance between the first surface 2114 and the first base plate 14 is less than or equal to 1 mm. In yet another embodiment, the distance between the first surface 2114 and the first base plate 14 is greater than 1 mm and less than or equal to 2 mm.

[0078] In some embodiments, the first base plate 14 and the housing 11 can be an integral structure or a separate structure, without limitation.

[0079] In this embodiment, as Figures 2-13 As shown, the chassis 1 also includes a second base plate 15, which is connected to the first base plate 14. The second base plate 15 and the first base plate 14 are jointly installed on the housing 11. The second base plate 15 is also located below the rotating plate unit 2. The second base plate 15 can also contact or have a gap fit with the blocking part 211. When the blocking part 211 is in the second position, the first surface 2114 abuts against the third surface 151 of the second base plate 15. When the blocking part 211 is in the first position, the first surface 2114 abuts against the second surface 142 of the first base plate 14. Regardless of whether the blocking part 211 is in the first or second position, the second surface 142 or the third surface 151 always abuts against the first surface 2114 to press against the blocking part 211, thereby constraining the rotating plate body 21 and further preventing the rotating plate body 21 from stalling, thus improving the performance.

[0080] In this embodiment, as Figures 9-11 As shown, the second base plate 15 extends a blocking edge 141 on the side facing the cutting cavity 1A, and the second surface 142 is disposed on the blocking edge 141. The first surface 2114 is in contact with the blocking edge 141.

[0081] like Figure 11As shown, in one embodiment, the first base plate 14 further includes a hay discharge chamber cover 144, which covers at least a portion of the hay discharge chamber 1C to prevent hay clippings from falling out of the chamber. The blocking edge 141 and the hay discharge chamber cover 144 are integrally formed. In another embodiment, the blocking edge 141 and the hay discharge chamber cover 144 do not need to be integrally formed; they can be formed separately and then installed together. That is, the first base plate 14 and the hay discharge chamber cover 144 can be composed of a single part or can be divided into two parts.

[0082] Optionally, such as Figure 12 As shown, the outer peripheral surface of the end of the blocking part 211 facing the first base plate 14 and the second base plate 15 is the fourth surface 2116. When the rotating plate unit 2 is in the second position, the fourth surface 2116 can abut against the second inner wall 112 of the housing 11, which can prevent the blocking part 211 from circumferentially deforming or shifting due to structural loosening, and prevent grass from getting stuck between the housing 11 and the blocking part 211, thus preventing blockage and further improving the structural reliability.

[0083] In this embodiment, as Figures 10-12 As shown, the first base plate 14 and the second base plate 15 are respectively provided with a first connecting part 143 and a second connecting part 152 on the side facing each other. The first connecting part 143 is inserted into the second connecting part 152, so that the holes of the first connecting part 143 and the second connecting part 152 are aligned to form a screw hole 153. The screw passes through the screw hole 153 to fix the first base plate 14 and the second base plate 15 to the housing 11, thereby realizing a detachable connection between the first base plate 14, the second base plate 15 and the chassis 1.

[0084] In some embodiments, the first base plate 14 and the second base plate 15 can also be integrally formed.

[0085] When the rotary plate unit 2 rotates from the second position to the first position, the front end portion 2115 of the blocking part 211 can smoothly transition and connect with the first inner wall 111 of the housing 11. For example... Figure 5 and Figure 6 As shown, in the grass collection mode, the cutting cavity 1A, the blocking part 211, and the first base plate 14 are smoothly connected, minimizing the formation of vortices inside the cutting cavity 1A and improving the grass collection effect. The transition surface disclosed in this embodiment is basically planar or has a small inclination angle. The chassis 1 and the rotating plate unit 2 of this solution have simple structures, are easy to manufacture and assemble, and reduce costs. In one embodiment, the blocking part 211 can be a flat plate structure, or a wavy, arc-shaped, or other plate-like structure, or a plate-like structure with flanges, without limitation.

[0086] like Figure 15 and 16As shown, the blocking part 211 has an arc structure when viewed from the circumference, and its bottom surface is a flat bottom surface 21131. In this embodiment, the blocking part 211 and the connecting part 212 are an integral structure, which has a simple shape, is easy to manufacture, has few parts, a simple structure, and is easy to assemble.

[0087] In this embodiment, as Figures 14-18 As shown, the shell 11 is a hollow structure with a U-shaped cross-section. The shell 11 includes a second inner wall 112, a first inner wall 111, and a top wall connecting the second inner wall 112 and the first inner wall 111. An annular plate 12 is provided on the side near the hollow structure. Figure 26 In this embodiment, the annular plate 12 is connected to the second inner wall 112, and the connecting part 212 is circular and rotatably connected to the annular plate 12 along the same center line. The blocking part 211 is adapted to the shape of the housing 11, which enables the rotating plate body 21 to fit tightly with the chassis 1, preventing gaps from appearing in the middle and avoiding trapping passing grass clippings. Specifically, the power unit 5 is located above the hollow structure, and the cutter 6 is located in the hollow structure position of the housing 11 through the connection with the power unit 5.

[0088] like Figures 16-18 As shown, the blocking part 211 is U-shaped and includes a first vertical plate 2111, a second vertical plate 2112, and a horizontal plate 2113 connecting the first vertical plate 2111 and the second vertical plate 2112. The first inner wall 111 and the top wall of the housing 11 are rounded, and the second inner wall 112 and the top wall are also rounded, making the structure smoother. Correspondingly, the first vertical plate 2111 and the horizontal plate 2113 are rounded, and the second vertical plate 2112 and the horizontal plate 2113 are also rounded, so that the blocking part 211 conforms to the shape of the housing 11. Specifically, the connecting part 212 is an annular cylinder, and the annular cylinder and the annular plate 12 are rotatably connected along the same center line.

[0089] like Figure 14 and Figure 15 As shown, when viewed from bottom to top, the second inner wall 112 of the cutting cavity 1A is basically circular, and the first inner wall 111 of the cutting cavity 1A is also basically circular, which facilitates the smooth movement of grass clippings within the cutting cavity 1A and ensures mowing performance. Furthermore, when viewed from bottom to top, the blocking part 211 has a first vertical plate 2111 that is basically arc-shaped, and the second vertical plate 2112 that is also basically arc-shaped, thus making the shape of the blocking part 211 conform to the shape of the housing 11.

[0090] like Figure 14 and Figure 15 As shown, when the chassis 1 is placed on a horizontal surface, the depth of the cutting cavity 1A of the housing 11 is approximately equal at any cross-section passing through the center of the housing 11 or the rotation center of the blade 6 and perpendicular to the horizontal surface. This facilitates the smooth movement of grass clippings within the cutting cavity 1A, ensuring mowing performance. In this embodiment, refer to... Figure 15 At any cross section passing through the center of the shell 11, the depth of the cutting cavity 1A of the shell 11 is basically equal. When the shell 11 is a hollow structure and the cross section of the shell 11 is U-shaped, L1 is equal to or approximately equal to L2.

[0091] When the depth of a certain part of the cutting cavity 1A is large due to the molding of the shell 11, a guide plate (not shown in the figure) can be set at that position or the cavity shape can be adjusted to ensure that the depth is basically equal, eliminate the height difference, facilitate grass cutting, and thus ensure grass cutting performance.

[0092] like Figures 19-25 As shown, the lawnmower 100 also includes a control assembly 23 connected to the rotary plate unit 2. The control assembly 23 is operated by the user to control the movement of the rotary plate unit 2.

[0093] In one embodiment, the operating component 23 is connected to the connecting part 212, and the chassis 1 is provided with a slot 132, within which the operating component 23 can be confined. When the operating component 23 is confined within the slot 132, the rotary plate unit 2 cannot rotate. When the rotary plate body 21 is adjusted to the first position or the second position, the operating component 23 engages within the slot 132, fixing the position of the rotary plate body 21.

[0094] In one implementation, such as Figures 19-25 As shown, the top of the chassis 1 is provided with a support part 13, and the support part 13 is provided with a guide groove 131 along the circumference. The guide groove 131 and the first inner wall 111 of the housing 11 have the same rotation center. The operating component 23 passes through and can be slidably connected to the guide groove 131. The groove wall of the guide groove 131 is provided with a slot 132, and the operating component 23 can be limited by the slot 132. The operating component 23 can slide to different positions in the guide groove 131, thereby adjusting the position of the rotary plate body 21, and thus realizing the switching between the grass shredding mode and the grass collection mode.

[0095] Specifically, at least two slots 132 are provided. When the operating component 23 is engaged in the first slot 132, the rotary plate body 21 is in a first position. When the operating component 23 is engaged in the second slot 132, the rotary plate body 21 is in a second position. In other embodiments, other slots 132 can also be provided to fix the rotary plate body 21 in the corresponding position, and the lawnmower 100 can perform the corresponding mode operation. The setting can be made according to the actual situation and is not limited. In other embodiments, the slots 132 can also be replaced with other structures and are not limited. For example, an adsorption member is provided between the operating component 23 and the guide groove 131. When the operating component 23 is set in the corresponding position, the operating component 23 is fixed in the corresponding position of the guide groove 131 by the adsorption member.

[0096] In this embodiment, the support part 13 can be a shell-shaped hollow structure or a solid structure, as long as it can support the control component 23. Specifically, the support part 13 and the chassis 1 can be an integral structure or a separate structure, without limitation.

[0097] In one embodiment, the control assembly 23 includes a resilient control lever 231 and a handle 232 detachably connected to one end of the control lever 231. The other end of the control lever 231 is detachably connected to the connecting portion 212. When the control lever 231 is engaged in the slot 132, the end of the handle 232 abuts against the outer peripheral surface of the support portion 13. The control lever 231's inherent elasticity allows it to engage in the slot 132, resulting in a simple structure and quick installation. In one embodiment, the control lever 231 can be a steel structural bar with good elasticity. It should be noted that the handle 232 can also be non-detachably connected to the control lever 231; this is not a limitation. In one embodiment, the handle 232 is made of a different material than the control lever 231.

[0098] In this embodiment, the buckle 2311 on the control lever 231 is engaged in the slot 2321 of the handle 232 to lock the control component 23, at which time the rotary plate unit 2 cannot rotate; when the user presses the buckle 2311, the control component 23 can be unlocked, and rotating the control component 23 will make the rotary plate unit 2 rotate together.

[0099] The control component 23 can be in at least a locked position and an unlocked position. When the control component 23 is in the locked position, the handle 232 is at a higher height than when the control component 23 is in the unlocked position. That is, when the control component 23 is in the locked position, the control component 23 is in a locked state, and the rotary plate unit 2 cannot be moved by the control component 23; when the control component 23 is in the unlocked position, the control component 23 is in an unlocked state, and the rotary plate unit 2 can be moved by the control component 23. Through the elasticity of the control component 23 itself, the control component can be switched from the locked position to the unlocked position, or from the unlocked position to the locked position.

[0100] Through the above technical solution, the control component 23 can be unlocked by pressing and automatically rebounded when released, which greatly facilitates the operation of the rotary plate unit 2. It is easy to manufacture and process, has fewer parts, and is less prone to failure. After the user presses the handle 232 and overcomes the spring force of the control lever 231, the control component 23 moves from the locked position to the unlocked position; after the user releases the hand, the handle 232 automatically rebounds due to the spring force of the control lever 231, and the control component 23 returns from the unlocked position to the locked position.

[0101] It should be understood that the various components of the embodiments of this disclosure may be made of any of a variety of materials, including, for example, metals, plastics, plastic resins, nylon, composite materials and / or rubber, or any other materials that may be required.

[0102] In this embodiment, the other end of the control lever 231 is provided with a connecting seat 2312, which is connected to the connecting part 212 by fasteners such as screws.

[0103] In one implementation, such as Figures 30-32 As shown, the control assembly 23 includes a joystick 231 and a handle 232 with a positioning part 2322. One end of the joystick 231 is rotatably connected to the connecting part 212, and the handle 232 is elastically connected to the joystick 231 so that the positioning part 2322 can be limited to the slot 132. Specifically, the joystick 231 is generally L-shaped, with a bent structure at one end, which is rotatably connected to the connecting part 212. The other end is fixed with a pin 233, and the handle 232 is rotatably connected to the pin 233. A first torsion spring 234 is fixed on the pin 233, and the protruding end of the first torsion spring 234 abuts against the handle 232. The joystick 231 is a rigid rod. Pressing down the handle 232 causes the positioning part 2322 to disengage from the slot 132, thereby unlocking the control assembly 23, which can then rotate. When the handle is released, the first torsion spring 234 returns to its original position, and the handle 232 automatically springs back into the slot 132, preventing the control assembly 23 from rotating and thus locking it.

[0104] In one implementation, such as Figure 33 and Figure 34 As shown, the control component 23 includes a control lever 231, which is elastically connected to the chassis 1 so that the control lever 231 can be confined to the slot 132. Specifically, the control lever 231 is fixed to the connecting part 212 by screws, etc. The slot 132 is opened above the connecting part 212. Pressing down the handle 232 causes the control lever 231 to disengage from the slot 132, thereby unlocking the control component 23, which can then rotate. When released, the elasticity of the control lever 231 causes the control component 23 to return to its original position, and the control lever 231 automatically springs back into the slot 132, preventing the control component 23 from rotating, thus locking it. It is understood that the tool 6 can be a single blade, a double blade, or multiple blades. Specifically, the power unit 5 can include one or more drive motors, and the power unit 5 and the tool 6 can include the following combinations: The first case is one drive motor and one blade, with the drive motor driving a single blade, which has a relatively simple mode, and different working modes can be changed by adjusting the speed of the drive motor; the second case is, as in this embodiment, such as Figure 27As shown, one configuration uses two blades and one drive motor. One drive motor simultaneously drives both blades, increasing the number of blades and improving the cutting effect. Multiple blades can also be used. A third configuration uses multiple drive motors and multiple blades, with each drive motor driving one blade. The cutting speed can be changed by altering the speed of the drive motors, or some drive motors can be selected to operate while others are deactivated to change the cutting intensity, increasing the number of working modes and providing more options. The specific structure can be selected and set according to actual needs and is not limited.

[0105] like Figure 28 and Figure 29 As shown, in one embodiment, the rotary plate unit 2 further includes a kicking block 22 protruding from the blocking portion 211. Specifically, the kicking block 22 is connected to the rear end of the blocking portion 211 when it rotates from the second position to the first position.

[0106] By setting the anti-kick block 22, in the grass-chopping mode, the anti-kick block 22 can effectively block the grass clippings, allowing them to fall evenly within the cutting chamber 1A and improving the grass clipping effect. In the grass-collecting mode, the anti-kick block 22 on the blocking part 211 can suppress the rotating airflow within the cutting chamber 1A to a certain extent, making the airflow more conducive to the grass clippings being discharged through the first outlet 1B to the grass discharge chamber 1C.

[0107] In one embodiment, the anti-kick block 22 and the blocking part 211 are integrally formed. The anti-kick block 22 may be located on the first vertical plate 2111, the second vertical plate 2112 and the horizontal plate 2113 of the blocking part 211, or it may be located in the front, middle and rear sections of the blocking part 211 when the rotating plate unit 2 rotates from the second position to the first position, without limitation.

[0108] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that the above embodiments do not limit this application in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this application.

Claims

1. A lawnmower, comprising: A cutting tool consists of at least one blade; The chassis has a cutting chamber and a grass discharge chamber. The cutting chamber is used by the blade to perform cutting operations, and the grass discharge chamber is used to discharge shredded grass. The cutting chamber and the grass discharge chamber are connected by a first outlet. A power unit that drives the cutting tool to rotate within the cutting cavity; A rotating plate unit is rotatable to a first position or a second position. When the rotating plate unit is in the first position, it blocks the first outlet; when the rotating plate unit is in the second position, the first outlet is opened. Its features are: The rotary plate unit includes a rotary plate body, which includes a blocking part and a connecting part connected to each other. The connecting part is rotatably connected to the chassis. The chassis also includes a first base plate, which is at least partially located below the rotary plate unit. The first base plate contacts or has a gap with the blocking part to restrict the downward movement of the rotary plate unit. The chassis also includes a second base plate, which is connected to the first base plate. The second base plate and the first base plate are installed together in the housing. The second base plate is also located below the rotating plate unit. The second base plate may also contact the blocking part or have a gap fit.

2. The lawnmower according to claim 1, characterized in that, The housing and the first bottom plate form the grass discharge chamber, with the first bottom plate disposed on the lower side of the housing, through which the cut grass clippings are discharged.

3. The lawnmower according to claim 1, characterized in that, The blocking portion of the rotary plate unit includes a first surface facing the first base plate, and the distance between the first surface and the first base plate is greater than or equal to 0 and less than or equal to 4 mm.

4. The lawnmower according to claim 1, characterized in that, Viewed from bottom to top, the second inner wall of the cutting cavity is basically circular, and the first inner wall of the cutting cavity is also basically circular.

5. The lawnmower according to claim 1, characterized in that, When the chassis is placed on a horizontal plane, the depth of the cutting cavity of the housing is substantially equal in any cross section passing through the center of the housing or the rotation center of the cutter and perpendicular to the horizontal plane.

6. The lawnmower according to claim 1, characterized in that, The blocking part is rotatably connected to the inner side of the housing, and the rotary plate unit also includes a kicking block protruding from the blocking part.

7. The lawnmower according to claim 1, characterized in that, The lawnmower also includes an operating component connected to the rotary plate unit. The operating component can be switched between at least a locked position and an unlocked position. When the operating component is in the locked position, the operating component is locked and the rotary plate unit cannot be moved by the operating component. When the control component is in the unlocked position, the control component is in the unlocked state, and the rotary plate unit can be moved by the control component.

8. The lawnmower according to claim 7, characterized in that, The control component includes a resilient lever, the resilient nature of which causes the control component to spring back from the unlocked position to the locked position.

9. The lawnmower according to claim 1, characterized in that, A third position is provided between the first position and the second position, and the rotary plate unit can be rotated to the third position so that the first outlet is partially opened.

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