Lawn mower

Abstract

The mower comprises a stop block, the stop block is formed or connected to the side wall of a cutting chamber and arranged between a first rotating center line and a second rotating center line, at least part of the stop block protrudes into the cutting chamber, and the closer the stop block is to an opening in the bottom of the cutting chamber, the more the stop block protrudes inwards. The mowing efficiency of the mowing machine is higher.

Description

TECHNICAL FIELD

[0001] The present application relates to an outdoor garden electric tool, in particular to a lawn mower. BACKGROUND

[0002] The lawn mower is a common grass cutting device with high efficiency and easy operation. When trimming or mowing the lawn, a lawn mower is needed. The lawn mower is also called a weeding machine, a grass cutting machine, a lawn trimming machine, etc. The lawn mower is composed of a chassis, a motor, a walking mechanism, a cutting part and an operating device. The chassis is provided with an engine, and the output shaft of the engine is provided with a cutting part. The engine drives the cutting part to rotate at high speed to cut grass.

[0003] In order to improve the cutting efficiency, the lawn mower is provided with two or more cutting parts arranged side by side or non-coaxially to increase the cutting amount per unit time. For the lawn mower with two cutting parts, the side grass outlet and / or the grass outlet are in one cutter head. This puts higher requirements on the grass discharging capacity of the lawn mower.

[0004] This part provides background information related to the present application, which may not be prior art. CONTENT OF THE UTILITY MODEL

[0005] One object of the present application is to solve or at least alleviate part or all of the above problems. To this end, one object of the present application is to provide a lawn mower.

[0006] In order to achieve the above object, the present application adopts the following technical solution:

[0007] A lawn mower comprises: a walking wheel set comprising a plurality of walking wheels, the walking wheel set being configured to support the lawn mower to walk on the ground; a lawn deck having a downwardly open cutting chamber, the cutting chamber forming at least one grass outlet; a cutting assembly at least partially accommodated in the cutting chamber; the cutting assembly comprising a first blade rotating around a first rotation center line and a second blade rotating around a second rotation center line; the lawn deck comprising a baffle, the baffle being formed on or connected to a side wall of the cutting chamber, and the baffle being disposed between the first rotation center line and the second rotation center line, at least part of the baffle protruding inwardly into the cutting chamber, and the baffle protruding inwardly into the cutting chamber more as it is closer to the bottom opening of the cutting chamber.

[0008] In some embodiments, in the axial direction of the cutting chamber, the baffle is provided with a first end close to the bottom opening of the cutting chamber and a second end close to the top wall of the lawn deck, and at least part of the first end protrudes more inwardly into the cutting chamber than the second end.

[0009] In some embodiments, the first end and the second end each have a side end face facing inwardly into the cutting chamber, and at least part of the side end face of the first end protrudes more inwardly into the cutting chamber than the side end face of the second end.

[0010] In some embodiments, the side end surface of the second end is substantially flush with the side wall inside the cutting chamber, and a transition surface is provided between the first end and the second end, the transition surface smoothly connects the side end surface of the first end and the side end surface of the second end.

[0011] In some embodiments, the stopper is convex inwardly from the first end of the stopper along the rotation direction of the second blade.

[0012] In some embodiments, the cutting chamber is provided with a first cutter disc and a second cutter disc, the first blade is at least partially provided in the first cutter disc, and the second blade is at least partially provided in the second cutter disc, and the stopper is provided at the position where the first cutter disc and the second cutter disc are connected.

[0013] In some embodiments, at the connection position of the first cutter disc and the second cutter disc, an arc surface is formed which is convex inwardly and forwardly, and the stopper at least partially coincides with the arc surface.

[0014] In some embodiments, the most forward end of the arc surface forms a first vertex, and the third vertex of the most forward end of the first end is located forward of the first vertex.

[0015] In some embodiments, the first cutting area of the first blade is defined as the trajectory formed by the tip of the first blade rotating one round, the second cutting area of the second blade is defined as the trajectory formed by the tip of the second blade rotating one round, the region in the cutting chamber which is neither covered by the first cutting area of the first blade nor covered by the second cutting area of the second blade is defined as a gap area, and at least part of the stopper is provided in the gap area.

[0016] In some embodiments, in the gap area, at the bottom opening, the gap between the second cutting area and the side wall of the second cutter disc is greater than or equal to 10 mm and less than or equal to 30 mm, and at the position of the first vertex, the gap between the second cutting area and the side wall of the second cutter disc is greater than 30 mm and less than or equal to 50 mm.

[0017] A mower, comprising: a walking wheel set configured to support the mower to walk on the ground; a mower deck having a cutting chamber open downwardly, the cutting chamber forming at least one grass outlet; a cutting assembly at least partially accommodated in the cutting chamber; the cutting assembly comprising a first blade rotating around a first rotation center line and a second blade rotating around a second rotation center line; a first cutting area defined as the trajectory formed by the tip of the first blade rotating one round; a second cutting area defined as the trajectory formed by the tip of the second blade rotating one round; a gap area defined as the region in the cutting chamber which is neither covered by the first cutting area of the first blade nor covered by the second cutting area of the second blade, and at the bottom opening of the cutting chamber corresponding to the gap area, the mower deck is at least partially provided with a lip structure extending inwardly.

[0018] The beneficial effects of the present application are: the first end of the block near the bottom opening of the cutting deck protrudes more inward than the second end near the top wall, so that an inwardly extending lip is formed at the bottom opening of the cutting chamber, which can prolong the residence time of grass clippings in the cutting chamber. The second end of the block does not occupy much space in the cutting chamber, ensuring that the cutting chamber space accommodates the area of the vegetation, while improving the problem of grass falling and blind area. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a schematic view of a hand-push lawn mower as an embodiment of the present application;

[0020] Figure 2 is a schematic view of a cutting deck of a lawn mower as an embodiment of the present application;

[0021] Figure 3 is a schematic view of the airflow direction in a lawn mower as an embodiment of the present application;

[0022] Figure 4 is a schematic view of the integral forming of the flow guide and the cutting deck of a lawn mower as an embodiment of the present application;

[0023] Figure 5 is Figure 4 A-A view in the middle;

[0024] Figure 6 is another schematic view of a cutting deck of a lawn mower as an embodiment of the present application;

[0025] Figure 7 is Figure 6 B-B view in the middle;

[0026] Figure 8 is a schematic view of a flow guide in a hand-push lawn mower as an embodiment of the present application;

[0027] Figure 9 is a front view of a flow guide in a lawn mower as an embodiment of the present application;

[0028] Figure 10 is a schematic view of a cutting deck of a lawn mower as another embodiment of the present application;

[0029] Figure 11 is a schematic view of a cutting deck of a lawn mower as another embodiment of the present application;

[0030] Figure 12 is a schematic view of the airflow direction in a lawn mower as another embodiment of the present application;

[0031] Figure 13 is a schematic view of grass clippings flow in a lawn mower of the present application as another embodiment;

[0032] Figure 14 is a schematic view of another perspective of a cutting deck in a lawn mower of the present application as another embodiment;

[0033] Figure 15 is a schematic view of a partial enlarged view of a cutting deck in a lawn mower of the present application as another embodiment;

[0034] Figure 16 is a bottom view of a cutting deck in a lawn mower of the present application as another embodiment;

[0035] Figure 17 is a schematic view of another perspective of a cutting deck in a lawn mower of the present application as another embodiment;

[0036] Figure 18 is a schematic view of another perspective of Figure 17 ;

[0037] Figure 19 is a schematic view of a structure of a baffle in a lawn mower of the present application as another embodiment;

[0038] Figure 20 is a schematic view of a riding lawn mower of the present application as an embodiment. DETAILED DESCRIPTION

[0039] Before any embodiments of the present application are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the above-described accompanying drawings.

[0040] In the present application, the terms "comprising", "including", "containing", or any other similar phrase are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements in the list, but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a" does not exclude the existence of additional identical elements in the process, method, article, or apparatus including the element.

[0041] In the present application, the term "and / or", is a description of an association relationship between associated objects, which means that there can be three kinds of relationships. For example, A and / or B, can represent the following three cases: A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in the present application generally represents that the front and rear associated objects are in a "and / or" relationship.

[0042] In this application, the terms "connected", "coupled", "engage", "engagement", "mounting" can be direct connection, coupling or mounting, or indirect connection, coupling or mounting. For example, direct connection refers to two parts or components connected together without the need to set intermediate parts, indirect connection refers to two parts or components connected with at least one intermediate part, and the two parts or components are connected through the intermediate part. In addition, "connection" and "coupling" are not limited to physical or mechanical connection or coupling, and can include electrical connection or coupling.

[0043] In this application, those of ordinary skill in the art will understand that the relative terms used in connection with the quantity or condition (for example, "about", "approximately", "substantially" and the like) include the value indicated and have the meaning indicated by the context. For example, the relative terms at least include the degree of error related to the measurement of a specific value, the tolerance caused by manufacturing, assembly, use, etc. related to a specific value. Such terms should also be considered to disclose the range defined by the absolute values of the two endpoints. The relative terms can refer to the addition or subtraction of a certain percentage (for example, 1%, 5%, 1% or more) of the indicated value. The numerical value without the relative term should also be disclosed as a specific value with a tolerance. In addition, "substantially" when expressing the relative angular positional relationship (for example, substantially parallel, substantially perpendicular), can refer to the addition or subtraction of a certain degree (for example, 1 degree, 5 degrees, 1 degree or more) based on the indicated angle.

[0044] In this application, those of ordinary skill in the art will understand that the functions performed by the components can be performed by one component, multiple components, one part, or multiple parts. Similarly, the functions performed by the parts can also be performed by one part, one component, or multiple parts in combination.

[0045] In this application, the terms "upper", "lower", "left", "right", "front", "back" and the like are described in the orientation and positional relationship shown in the drawings, and should not be understood as limiting the embodiments of the application. In addition, it should also be understood in the context that when referring to one element connected to another element "on" or "under", it can not only be directly connected to another element "on" or "under", but also indirectly connected to another element "on" or "under" through an intermediate element. It should also be understood that the terms "upper", "lower", "left", "right", "front", "back" and the like not only represent the positive direction, but also can be understood as the side direction. For example, the lower side can include the directly below, the left below, the right below, the front below and the back below, etc.

[0046] The wheeled working tool is a tool that drives a functional part by using an electric motor as a driving part through wheeled driving to perform corresponding work, such as a wheeled electric mower, a snow blower and a road sweeper.

[0047] Figure 1 and Figure 14 The lawn mower 100 shown in FIG. 1 is used for a user to cut grass in a lawn, such as a garden, a golf course, etc. The grass in the lawn needs to be cared regularly, and thus the lawn mower 100 needs to be used frequently to cut the grass. In the present embodiment, the lawn mower 100 is a walk-behind working machine. When the user operates the lawn mower 100, the user stands behind the lawn mower 100 to push the lawn mower 100 to walk on the ground.

[0048] As shown in FIG. 1, the lawn mower 100 comprises a handle assembly 11 and a main machine 12. The handle assembly 11 is used for a user to hold to operate the lawn mower 100, and the main machine 12 comprises a housing assembly 121 and a chassis 122. The handle assembly 11 is rotatably connected with the housing assembly 121. For the convenience of describing the technical solutions, the front, the rear, the left, the right, the top and the bottom are defined as shown in FIG. 1. Figures 1 to 13 Figure 1

[0049] As shown in FIG. 1, the lawn mower 100 further comprises a walking wheel set 30, a cutting assembly 13 and a driving assembly 14. The walking wheel set 30 comprises a front walking wheel set 31 and a rear walking wheel set 32, and the front walking wheel set 31 and the rear walking wheel set 32 are used to support the lawn mower 100 to walk on the ground. The front walking wheel set 31 comprises at least two walking wheels located on the left and right sides. The rear walking wheel set 32 comprises at least two walking wheels located on the left and right sides. It can be understood that the front walking wheel set 31 can also comprise more walking wheels, such as four, six or more. The rear walking wheel set 32 can also comprise more walking wheels, such as four, six or more. The plurality of walking wheels in the front walking wheel set 31 and the rear walking wheel set 32 form a support plane. It can be understood that the support plane is parallel to the ground on which the lawn mower 100 is located. Taking a horizontal flat ground as an example, the support plane is parallel to the horizontal plane. Figure 1 Figure 2 The cutting deck 15 has a downwardly open cutting chamber 150. The lawn mower 100 further comprises a grass discharge passage 17, one end of the grass discharge passage 17 is connected with the cutting chamber 150, and the other end of the grass discharge passage 17 comprises a rear grass discharge opening arranged at the rear end of the lawn mower 100. In the present embodiment, the cutting chamber 150 forms at least one grass outlet 171. In the present embodiment, the cutting deck 15 is formed on or connected with the chassis 122.

[0050] The cutting deck 15 has a downwardly open cutting chamber 150. The lawn mower 100 further comprises a grass discharge passage 17, one end of the grass discharge passage 17 is connected with the cutting chamber 150, and the other end of the grass discharge passage 17 comprises a rear grass discharge opening arranged at the rear end of the lawn mower 100. In the present embodiment, the cutting chamber 150 forms at least one grass outlet 171. In the present embodiment, the cutting deck 15 is formed on or connected with the chassis 122.

[0051] ​​​The cutting assembly 13 is configured to perform a cutting function, and the cutting assembly 13 includes a first blade 131 and a second blade 132 arranged adjacent to each other along a configuration direction. In this embodiment, the configuration direction is the left-right direction of the mower 100. It can be understood that the left-right direction includes not only the forward direction but also the lateral direction, for example, the first blade 131 is above the left or right of the second blade 132. In other embodiments, the configuration direction can also be the front-rear direction of the mower 100. The driving assembly 14 is configured to drive the cutting assembly 13 to rotate, and the driving assembly 14 includes a first motor (not shown) and a second motor (not shown). The first motor is configured to control the rotation of the first blade 131, and the second motor is configured to control the rotation of the second blade 132. The mower deck 15 is formed with a cutting chamber 150 for accommodating at least part of the cutting assembly 13, and the cutting chamber 150 is provided with a first cutterhead 151 and a second cutterhead 152. The first blade 131 is at least partially arranged in the first cutterhead 151, and the second blade 132 is at least partially arranged in the second cutterhead 152. Optionally, the size of the first blade 131 and the second blade 132 can be 390 mm. Optionally, the size of the first blade 131 and the second blade 132 can be 376 mm. In addition, the first blade 131 and the second blade 132 can also have other sizes. Alternatively, the size of the first blade 131 and the second blade 132 can be different, which is not limited in the present application.

[0052] Optionally, the cutting size of the mower 100 can be 760 mm. Optionally, the cutting size of the mower 100 can be 748 mm. In addition, the cutting size of the mower 100 can also be other sizes, which is not limited in the present application. The cutting size of the mower 100 refers to the cutting width of the mower 100, that is, the cutting width of the mower 100 when working.

[0053] In some embodiments, the first motor drives the first blade 131 to rotate around a first rotation center line 1311, and the second motor drives the second blade 132 to rotate around a second rotation center line 1321. The rotation direction of the first motor and the rotation direction of the second motor are the same, so as to drive the rotation direction of the first blade 131 and the rotation direction of the second blade 132 to be the same. When the rotation direction of the first motor is clockwise, the rotation direction of the second motor is clockwise. Alternatively, when the rotation direction of the first motor is counterclockwise, the rotation direction of the second motor is counterclockwise.

[0054] In other alternative embodiments, in some embodiments, the rotation direction of the first motor and the rotation direction of the second motor are opposite, so as to drive the rotation direction of the first blade 131 and the rotation direction of the second blade 132 to be opposite. When the rotation direction of the first motor is clockwise, the rotation direction of the second motor is counterclockwise. Alternatively, when the rotation direction of the first motor is counterclockwise, the rotation direction of the second motor is clockwise.

[0055] As shown in Figure 2 The mower 100 further comprises a side discharge assembly 16 connected with the second cutter deck 152 to perform the discharge function. The second motor can control the second blade 132 to discharge the grass clippings in the second cutter deck 152 into the side discharge assembly 16, thereby performing the discharge function. The mower 100 further comprises a side discharge cover 161 arranged between the second cutter deck 152 and the side discharge assembly 16. Before the mower 100 uses the side discharge assembly 16 to perform the discharge function, the side discharge cover 161 needs to be opened so that the second cutter deck 152 is in communication with the side discharge assembly 16.

[0056] In some embodiments, as shown in Figure 2 and Figure 5 One end of the discharge passage 17 is connected with the second cutter deck 152, and the other end of the discharge passage 17 comprises a discharge outlet 171 arranged at the rear end of the mower 100. In some embodiments, the discharge outlet 171 is located at the side of the cutting chamber 150 where the second blade 132 is arranged. The first motor controls the first blade 131 to discharge the grass clippings in the first cutter deck 151 into the second cutter deck 152 through the communication area 153, and the second motor controls the second blade 132 to discharge the grass clippings in the second cutter deck 152 into the discharge passage 17, which is used to guide the grass clippings from the second cutter deck 152 to the discharge outlet 171.

[0057] The mower 100 further comprises a rear discharge baffle arranged in the first end 23 where the discharge passage 17 is connected with the second cutter deck 152. Before the mower 100 performs the rear discharge function through the discharge passage 17, the rear discharge baffle needs to be opened first so that the discharge passage 17 is in communication. The mower 100 further comprises a grass collecting basket 18 connected with the main machine 12. When the mower 100 performs the rear discharge function, the grass clippings coming out of the discharge passage 17 can be thrown into the grass collecting basket 18.

[0058] To improve the mowing efficiency, the mower 100 can be provided with two or more blades arranged side by side or non-coaxially to increase the cutting amount per unit time, which puts higher requirements on the discharge capacity of the mower 100. For the mower 100 provided with two cutting members, the side discharge outlet and / or the discharge outlet 171 are both in the second cutter deck 152. When discharging, the discharge outlet 171 becomes a gap in the second cutter deck 152, so that the air pressure in the second cutter deck 152 is less than that in the first cutter deck 151, and the grass clippings enter the second cutter deck 152 from the first cutter deck 151. Because a part of the first cutter deck 151 has not been cut or a large amount of cut grass enters the second cutter deck 152, the cutting pressure of the second blade 132 in the second cutter deck 152 is very large, the load of the motor increases accordingly, the discharge pressure increases synchronously, and the motor is prone to stall.

[0059] To improve the above problems, in one embodiment, as shown in Figures 2-6 The mowing deck 15 is formed or connected with a flow guide 20; the flow guide 20 has a first end 23 close to the grass outlet 171 and a second end 24 away from the grass outlet 171 in the extension direction thereof. Wherein, the first end 23 and the second end 24 are respectively located on both sides of the first plane 111; the first plane 111 is defined as passing through the first rotation center line 1311 of the first blade 131 and the second rotation center line 1321 of the second blade 132 and perpendicular to the support plane.

[0060] By forming or connecting the mowing deck 15 with the flow guide 20, the first grass cuttings cut by the first cutter 151 are divided when entering the second cutter 152 (on the side of the grass outlet 171). The first part of the grass cuttings is collected with the second grass cuttings of the second cutter 152 (the part flowing in the same direction as the grass cuttings in the second cutter 152), and the second part of the grass cuttings directly enters the grass outlet 171. The grass cuttings collected by the second cutter 152 can be greatly reduced, the load of the second blade 132 is reduced, and the problem of stall is improved. In addition, the side discharge performance and the grass crushing performance are not affected.

[0061] In some embodiments, as shown in Figure 4 and Figure 6 The flow guide 20 is integrally formed with the mowing deck 15 or detachably arranged. The flow guide 20 is L-shaped and includes a mounting portion 22 and a guide portion 21 connected with each other. In the design process, as shown in Figures 4 to 5 The mounting portion 22 and the mowing deck 15 can be designed as an integrally formed structure, specifically, a stamping forming method can be adopted to reduce the manufacturing process, ensure the stability of the connection between the flow guide 20 and the mowing deck 15, and avoid installation. As shown in Figure 6 and Figure 9 The mounting portion 22 is connected with the mowing deck 15. Bolts 25 can also be used to connect the mounting portion 22 with the mowing deck 15, and the flow guide 20 can be quickly replaced after wear. In order to ensure the stable connection between the flow guide 20 and the mowing deck 15, a plurality of bolts 25 are arranged at intervals along the extension direction of the mounting portion 22.

[0062] In some embodiments, as shown in Figure 6 The first end 23 intersects with the grass discharge path of the grass outlet 171, and the included angle α between the flow guide 20 and the grass discharge path is greater than or equal to 90 degrees. Wherein, the grass discharge path is the extension direction of the side wall of the grass outlet 171. Through the above arrangement, part of the grass cuttings in the first cutter 151 can directly enter the grass outlet 171 under the blockage of the flow guide 20. Moreover, by limiting the obtuse angle between the flow guide 20 and the grass discharge path, the arrangement of the flow guide 20 is facilitated.

[0063] In some embodiments, as shown in Figure 5As shown, a connecting region 153 is formed between the second end 24 of the guide member 20 and the edge of the cutting deck 15. Some of the grass clippings in the first cutter head 151 merge with the grass clippings in the second cutter head 152 through the connecting region 153 and then enter the grass outlet 171.

[0064] In some embodiments, such as Figure 6 As shown, the width W1 of the connecting region 153 is greater than or equal to 50mm and less than or equal to 150mm. The width of the connecting region 153 can be 50mm, 55mm, 60mm, 65mm, 70mm...150mm. By limiting the width of the connecting region 153, it is convenient to arrange the guide member 20 while ensuring that some of the grass clippings in the first cutter head 151 can smoothly enter the second cutter head 152 and merge with the grass clippings in the second cutter head 152.

[0065] In some embodiments, such as Figure 4 As shown, the guide 20 is parallel to the first tangent 1312 of the cutting trajectory of the first blade 131, and the second end 24 does not intersect the cutting trajectory of the first blade 131. With the above arrangement, some of the cut grass clippings can smoothly pass through the connecting area 153 and enter the first cutter head 151 along the tangent direction of the first blade 131, while other grass clippings can directly reach the grass outlet 171 through the gap between the guide 20 and the movement trajectory of the first blade 131.

[0066] In some embodiments, such as Figure 4 As shown, the distance L1 between the second end 24 and the first tangent 1312 is greater than or equal to 5 mm. The distance L1 between the second end 24 and the first tangent 1312 can be 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, etc. It is understandable that the distance L1 between the second end 24 and the first tangent 1312 is not affected by the formation or connection of the guide member 20 to the mowing deck 15. Therefore, when the guide member 20 is connected to the mowing deck 15 by bolts 25, the distance L1 between the second end 24 and the first tangent 1312 is greater than or equal to 5 mm. The distance L1 between the second end 24 and the first tangent 1312 can be 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, etc. By limiting the distance between the second end 24 and the first tangent 1312, the width of the channel through which some grass clippings directly enter the outlet 171 is limited. Designers can flexibly design for different types of lawns, cutting speeds, etc., without imposing too many restrictions here.

[0067] In some embodiments, such as Figure 9As shown, the height H1 of the flow guide 20 is less than or equal to 100mm. Since part of the flow guide 20 is located in the cutting track of the second blade 132, the height of the flow guide 20 must be limited to prevent the flow guide 20 from interfering with the second blade 132. The height of the flow guide 20 can be 100mm, 95mm, 90mm, 85mm, 80mm, …, etc. The designer can design as needed, and there is no excessive limitation here.

[0068] In some embodiments, as shown in Figure 7 As shown, the distance H2 from the flow guide 20 to the top surface of the cutting deck is less than or equal to 80mm. The top surface of the cutting deck is the side of the cutting deck facing the first blade 131. The distance H3 from the flow guide 20 to the mounting plane of the second blade 132 is greater than or equal to 10mm, wherein the mounting plane of the second blade 132 is the plane of the second blade 132 away from the motor when the second blade 132 is mounted with the motor driving the second blade. By limiting the distance between the flow guide 20 and the cutting deck and the second blade 132, the arrangement of the flow guide 20 is facilitated, and interference with the second blade 132 is avoided.

[0069] In some embodiments, as shown in Figure 4 As shown, the distance W2 between the first end 23 and the edge of the grass outlet 171 is greater than or equal to 50mm and less than or equal to 150mm. The edge of the grass outlet 171 is the edge of the notch on the side of the grass outlet 171 closest to the first end 23 of the flow guide 20. The distance W2 between the first end 23 and the edge of the grass outlet 171 can be 50mm, 60mm, 70mm, 80mm, 90mm, …, 150mm. Of course, it can be understood that the distance W2 between the first end 23 and the edge of the grass outlet 171 is not affected by the formation or connection of the flow guide 20 on the cutting deck 15, so when the flow guide 20 is connected to the cutting deck 15 by the bolts 25, the distance W2 between the first end 23 and the edge of the grass outlet 171 is greater than or equal to 50mm and less than or equal to 150mm. The distance W2 between the first end 23 and the edge of the grass outlet 171 can be 50mm, 60mm, 70mm, 80mm, 90mm, …, 150mm. The distance W2 between the first end 23 and the edge of the grass outlet 171 determines the flow of grass clippings in the first blade 151 that directly enters the grass outlet 171, and the designer can set it according to actual needs.

[0070] In one embodiment, as shown in Figure 3As shown, a lawnmower 100 is also provided, wherein a first blade 131 is driven by a first motor to rotate around a first direction to generate a first airflow 41 that carries grass clippings toward a grass outlet 171; the first airflow 41 includes a first part 411 and a second part 412. The first part 411 flows toward the grass outlet 171 through a first flow path 45; the second part 412 flows toward the grass outlet 171 through a second flow path 46.

[0071] The first airflow 41 generated by the rotation of the first blade 131 causes the grass clippings cut by the first cutter disc 151 to be split when entering the second cutter disc 152. A portion of the grass clippings, under the action of the second part 412 of the first airflow 41, converges with the grass clippings in the second cutter disc 152 (flowing in the same direction as the grass clippings in the second cutter disc 152), while another portion of the grass clippings, under the action of the first part 411 of the first airflow 41, directly enters the grass outlet 171. This significantly reduces the amount of grass clippings collected in the second cutter disc 152, reduces the load on the second blade 132, and improves the problem of stalling. Furthermore, the side discharge performance and grass-chopping performance are not affected.

[0072] In some embodiments, such as Figures 2 to 3 As shown, the lawnmower 100 also includes a flow guide 20, which is formed or connected to the mowing deck 15. A first flow path 45 is located on the first side of the flow guide 20, and at least a portion of the second flow path 46 is located on the second side of the flow guide 20. The flow guide 20 serves to isolate the first flow path 45 and the second flow path 46. The flow guide 20 is L-shaped and includes an interconnected mounting portion 22 and a guiding portion 21. The mounting portion 22 is connected to the mowing deck 15. In the design process, the mounting portion 22 and the mowing deck 15 can be designed as an integrally formed structure. Specifically, stamping can be used to reduce manufacturing processes while ensuring the stability of the connection between the flow guide 20 and the mowing deck 15, and eliminating the need for installation. Alternatively, bolts 25 can be used to connect the flow guide 20 to the mowing deck 15 through the mounting portion 22, allowing for quick replacement after wear. To ensure a stable connection between the flow guide 20 and the mowing deck 15, multiple bolts 25 are spaced apart along the direction of extension of the mounting portion 22.

[0073] In some embodiments, the guide member 20 has a first end 23 near the grass outlet 171 and a second end 24 away from the grass outlet 171 in its extending direction. The second end 24 is located in the area where the first flow path 45 and the second flow path 46 intersect. The second end 24 of the guide member 20 separates the first flow path 45 and the second flow path 46. The grass clippings in the first cutter head 151 are diverted by the second end 24 of the guide member 20. A portion of the grass clippings merges with the grass clippings in the second cutter head 152, while the other portion of the grass clippings directly enters the grass outlet 171.

[0074] In some embodiments, the flow guide 20 is arranged between the first rotation center line 1311 of the first blade 131 and the second rotation center line 1321 of the second blade 132. The first rotation center line 1311 of the first blade 131 is the center position of the output shaft of the first motor, and the second rotation center line 1321 of the second blade 132 is the center position of the output shaft of the second motor. Through the above arrangement, the flow guide 20 plays a role of isolating the first flow path 45 and the second flow path 46, so that the grass clippings in the first cutter deck 151 can be effectively divided.

[0075] In some embodiments, the distance from the flow guide 20 to the second rotation center line 1321 of the second blade 132 is less than the distance from the flow guide 20 to the first rotation center line 1311 of the first blade 131. Since the grass outlet 171 is located at the second cutter deck 152, by arranging the flow guide 20 closer to the second rotation center line 1321 of the second blade 132, it is convenient for the grass clippings in the first cutter deck 151 to be divided after entering the second cutter deck 152.

[0076] In some embodiments, as shown in Figure 2 and Figure 3 The flow guide 20 has a first end 23 close to the grass outlet 171 and a second end 24 away from the grass outlet 171 in the extension direction thereof, and the second end 24 is arranged to be spaced apart from the edge of the mower deck 15 to form a communication area 153. Part of the grass clippings in the first cutter deck 151 converge with the grass clippings in the second cutter deck 152 through the communication area 153, and then enter the grass outlet 171.

[0077] In some embodiments, as shown in Figure 3 The flow guide 20 is parallel to the first tangent line 1312 of the cutting trajectory of the first blade 131, and the distance L1 between the second end 24 and the first tangent line 1312 is greater than or equal to 5 mm. The distance L1 between the second end 24 and the first tangent line 1312 can be 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, …. By limiting the distance between the second end 24 and the first tangent line 1312, the channel width of the part of the grass clippings directly entering the grass outlet 171 is limited. In design, the designer can flexibly design according to different types of lawns, cutting speeds, etc., and this is not limited too much here.

[0078] In some embodiments, the second blade 132 is driven to rotate around the first direction by a second motor, and the second motor is arranged coaxially with the first motor. By designing the second blade 132 to rotate in the same direction as the first blade 131, it can be ensured that the grass clippings entering the second cutterhead 152 through the second flow path 46 can be smoothly converged with the grass clippings in the second cutterhead 152. The first motor and the second motor are arranged coaxially, which can avoid the interference between the first blade 131 and the second blade 132, and at the same time can expand the mowing area and ensure the mowing efficiency. The first direction can be a clockwise direction or a counterclockwise direction.

[0079] In some embodiments, the second blade 132 is driven to rotate around the first direction by a second motor to generate the second airflow 42 that drives the grass clippings to flow to the grass outlet 171, and the second airflow 42 flows to the grass outlet 171 through the second flow path 46. By rotating the second blade 132 to form the second airflow 42 flowing to the grass outlet 171, the suction effect can be achieved, thereby facilitating the rapid entry of part of the grass clippings in the first cutterhead 151 into the second flow path 46 and flowing to the grass outlet 171. The grass collecting performance can be further improved, the locked-rotor phenomenon of the second motor can be improved, thereby reducing the working current of the second motor and improving the endurance time of the whole machine.

[0080] In one embodiment, as shown in Figures 2 to 6 In one embodiment, as shown in

[0081] By arranging the flow guide 20 on the mowing deck 15, the grass clippings cut by the first cutterhead 151 are divided when entering the second cutterhead 152. Part of the grass clippings is converged with the grass clippings of the second cutterhead 152, and the other part of the grass clippings directly enters the grass outlet 171. That is, the first grass clippings flow 43 formed by the grass clippings cut by the first cutterhead 151 is divided by the flow guide 20 when entering the area of the second cutterhead 152. The first part 431 of the first grass clippings flow divided by the flow guide 20 directly flows into the grass outlet 171, and only the second part 432 of the first grass clippings flow converges to form the second grass clippings flow 44, which can greatly reduce the grass clippings converged by the second cutterhead 152, reduce the load of the second blade 132, and at the same time improve the locked-rotor problem. In addition, the side discharge performance and the grass chopping performance are not affected.

[0082] In some embodiments, as shown inFigure 2 and Figure 3 As shown in Figure 7 and Figure 8 As shown in

[0083] In some embodiments, as shown in Figure 2 and Figure 3 As shown in

[0084] In some embodiments, as shown in Figure 6 As shown in

[0085] In some embodiments, the guide member 20 has a first end 23 close to the grass outlet 171 and a second end 24 away from the grass outlet 171 in the extension direction of the guide member 20, and the second end 24 is spaced apart from the edge of the mowing deck 15 to form a communication area 153. Part of the grass clippings in the first cutter deck 151 enter the communication area 153 and then converge with the grass clippings in the second cutter deck 152, and then enter the grass outlet 171.

[0086] In some embodiments, the width W1 of the connecting region 153 is greater than or equal to 50 mm and less than or equal to 150 mm. The width of the connecting region 153 can be 50 mm, 55 mm, 60 mm, 65 mm, 70 mm...150 mm. By limiting the width of the connecting region 153, it is convenient to arrange the guide member 20 while ensuring that some of the grass clippings in the first cutter head 151 can smoothly enter the second cutter head 152 and merge with the grass clippings in the second cutter head 152.

[0087] In some embodiments, such as Figure 3 As shown, the guide member 20 has a first end 23 near the grass outlet 171 and a second end 24 away from the grass outlet 171 in its extending direction. The guide member 20 is parallel to the first tangent 1312 of the cutting trajectory of the first blade 131, and the second end 24 does not intersect the cutting trajectory of the first blade 131. With the above configuration, some of the cut grass clippings can smoothly pass through the connecting area 153 and enter the first cutter head 151 along the tangent direction of the first blade 131, while other grass clippings can directly reach the grass outlet 171 through the gap between the guide member 20 and the movement trajectory of the first blade 131.

[0088] In some embodiments, such as Figure 3 As shown, the distance L1 between the second end 24 of the guide member 20 and the first tangent 1312 is greater than or equal to 5 mm. The distance L1 between the second end 24 of the guide member 20 and the first tangent 1312 can be 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, etc. It is understandable that the distance L1 between the second end 24 and the first tangent 1312 is not affected by the formation or connection of the guide member 20 to the mowing deck 15. Therefore, when the guide member 20 is connected to the mowing deck 15 by bolts 25, the distance L1 between the second end 24 and the first tangent 1312 is greater than or equal to 5 mm. The distance L1 between the second end 24 and the first tangent 1312 can be 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, etc. By limiting the distance between the second end 24 and the first tangent 1312, the width of the channel through which some grass clippings directly enter the outlet 171 is limited. During the design process, designers can flexibly design for different types of lawns, cutting speeds, etc., without imposing too many restrictions here.

[0089] In some embodiments, such as Figure 8 As shown, the height H1 of the guide member 20 is less than or equal to 100mm. Since part of the guide member 20 is located within the cutting trajectory of the second blade 132, the height of the guide member 20 must be limited to prevent interference between the guide member 20 and the second blade 132. The height of the guide member 20 can be 100mm, 95mm, 90mm, 85mm, 80mm, etc. Designers can design it according to their needs; no further restrictions are imposed here.

[0090] As shown in Figure 1 and Figure 10 The mower 100 also includes a battery pack 500, a battery pack compartment and a battery pack holder. The battery pack 500 is used to power the drive assembly 14, and the battery pack compartment is used to accommodate the battery pack 500. The battery pack holder 100 is used to fix and support the battery pack compartment, so that the battery pack compartment can be at least partially arranged above the housing assembly 121.

[0091] In some embodiments, a battery pack cover is arranged on the battery pack compartment. The battery pack cover is at least partially transparent, so that the user can always observe the power of the battery pack 500. Optionally, the battery pack cover can be fixed on the battery pack compartment by a locking structure. The locking structure can be arranged on the battery pack cover or the battery pack compartment. The locking structure includes a buckle and an elastic return member. When the user presses the buckle, the elastic return member is compressed. At this time, the battery pack cover is opened from the battery pack compartment. When the user releases the buckle and presses the battery pack cover, the elastic return member returns to its original state, and the battery pack cover is closed on the battery pack compartment under the action of gravity.

[0092] In some embodiments, the battery pack 500 can be a single battery pack 500. At this time, the battery pack 500 is a large-capacity battery pack 500, and the capacity of the battery pack 500 is greater than or equal to 40 Ah. In some embodiments, the battery pack 500 can also be a plurality of battery packs 500. At this time, the battery pack 500 is a small-capacity battery pack 500, and the capacity of the battery pack 500 is greater than or equal to 2 Ah and less than or equal to 20 Ah. Among them, whether it is a single large-capacity battery pack 500 or a plurality of small-capacity battery packs 500, the endurance time of the battery pack 500 is greater than or equal to 100 min, and the power of the battery pack 500 is greater than or equal to 2000 W. To support the mower 100 to work for a long time, and to support the mower 100 to work with high efficiency, avoiding the user's need to frequently replace the battery pack 500. Optionally, a large-capacity battery pack interface is arranged on the battery pack compartment for connecting to the large-capacity battery pack 500. Optionally, a small-capacity battery pack interface is also arranged on the battery pack compartment for connecting to the small-capacity battery pack 500. Optionally, a battery pack 500 adapter can also be arranged on the large-capacity battery pack interface, and the plurality of small-capacity battery packs 500 are connected through the battery pack 500 adapter. By arranging the battery pack compartment that can match both the large-capacity battery pack 500 and the plurality of small-capacity battery packs 500, the user can make a choice according to their own situation, saving the user's use cost. In addition, by arranging a plurality of small-capacity battery packs 500, the problem of inconvenient plugging when the large-capacity battery pack 500 is out of power can be solved. For the plurality of small-capacity battery packs 500, only the small-capacity battery pack 500 that is out of power needs to be replaced, which is convenient to replace.

[0093] In some embodiments, the lawn mower 100 can further comprise a charging device for charging the battery pack 500. The charging device can be arranged on the battery pack compartment, or other positions on the lawn mower 100 which are convenient for users to operate, which are not limited in the present application. The charging device comprises a charging port and a charging port cover. When the charging device is not used, the charging port cover covers the charging port to prevent dust, grass and the like from entering the charging port and affecting charging. When the charging device is used, the charging port cooperates with a charging gun to charge the battery pack 500. At this time, the charging port cover is pressed against the charging gun to ensure the safety of using the charging gun to charge. Optionally, the charging port is inclined upward, which is convenient for users to use the charging gun to charge the battery pack 500. By arranging the charging device on the lawn mower 100, the battery pack 500 can be directly charged when it is out of power, without replacing the battery pack 500, which is convenient for users to use the lawn mower 100.

[0094] As shown in Figures 10 to 13 , the flow guide 20A as another embodiment of the present application is the same as the lawn mower 100 in the part of the structure or parts as Figures 2 to 9 , Figures 2 to 9 , the part numbers of the same parts in Figures 2 to 9 are used in

[0095] The lawn deck 15A is formed with a cutting chamber 150A for accommodating at least part of the cutting assembly 13. The cutting chamber 150A is provided with a first cutter disc 151A and a second cutter disc 152A. The first blade 131 is arranged in the first cutter disc 151A, and the second blade 132 is arranged in the second cutter disc 152A. Optionally, the size of the first blade 131 and the second blade 132 can be 390 mm. Optionally, the size of the first blade 131 and the second blade 132 can be 376 mm. In addition, the first blade 131 and the second blade 132 can also be other sizes. Or the size of the first blade 131 and the second blade 132 can be different, which are not limited in the present application.

[0096] In some embodiments, one end of the grass discharge channel 17 is connected with the second cutter disc 152A, and the other end of the grass discharge channel 17 comprises a grass outlet 171 arranged at the rear end of the lawn mower 100. In some embodiments, the grass outlet 171 is located on the side of the cutting chamber 150A where the second blade 132 is arranged. The first motor controls the first blade 131 to hit the grass clippings in the first cutter disc 151A into the second cutter disc 152A through the communication area 153A. The second motor controls the second blade 132 to hit the grass clippings in the second cutter disc 152A into the grass discharge channel 17, which is used to guide the grass clippings from the second cutter disc 152A to the grass outlet 171.

[0097] The mowing deck 15A is formed with or connected to a flow guide 20A; the flow guide 20A has a first end 23A near the grass outlet 171 and a second end 24A away from the grass outlet 171 in its extending direction. The first end 23A and the second end 24A are located on both sides of a first plane 111; the first plane 111 is defined as passing through the first rotation center line 1311 of the first blade 131 and the second rotation center line 1321 of the second blade 132 and perpendicular to the support plane.

[0098] By forming or connecting a flow guide 20A to the mowing deck 15A, the first grass clippings cut by the first cutter head 151A are diverted when entering the second cutter head 152A (on the side where the grass outlet 171 is located). The first portion of grass clippings merges with the second portion of grass clippings on the second cutter head 152A (flowing in the same direction as the grass clippings inside the second cutter head 152A), and the second portion of grass clippings directly enters the grass outlet 171. This significantly reduces the amount of grass clippings collected on the second cutter head 152A, reduces the load on the second blade 132, and improves the stalling problem. Furthermore, side discharge performance and grass shredding performance are not affected.

[0099] The flow guide 20A is integrally formed with the mowing deck 15A or is detachably mounted. The flow guide 20A includes an interconnected mounting portion 22A and a guiding portion 21A, with the mounting portion 22A connected to the mowing deck 15A. Alternatively, bolts 25 can be used to connect the flow guide 20A to the mowing deck 15A, allowing for quick replacement when the flow guide 20A wears out. To ensure a stable connection between the flow guide 20A and the mowing deck 15A, multiple bolts 25 are spaced apart along the direction of extension of the mounting portion 22A.

[0100] like Figures 10 to 11 As shown, the mowing deck 15A includes a second mounting portion 155 that houses a second motor. A guide member 20A is installed on the outer periphery of the second mounting portion 155. A guide portion 21A guides the grass clippings from the first cutter head 151A directly into the first guide surface 211A of the grass outlet 171. The first guide surface 211A or its extension is tangent to the outer periphery of the second mounting portion 155. A plane parallel to the first plane 111 and tangent to the rear side of the second mounting portion is defined as the second plane 112. The first guide surface 211A is located above the second plane, meaning that the first end 23A and the second end 24A are located on opposite sides of the first plane 111, and the first end 23A and the second end 24A are located on the front side of the second plane. In this embodiment, the distance between the first guide surface 211A and the mowing deck 15A is increased by placing the first end 23A and the second end 24A on the upper side of the second plane, thereby increasing the width of the channel through which the grass clippings of the first cutter disc 151A directly enter the grass outlet 171, and thus increasing the amount of grass clippings that directly enter the grass outlet 171 of the first cutter disc 151A.

[0101] In some embodiments, the extension line of the first guide surface 211A intersects with the grass discharging path of the grass discharging port 171, and the included angle a between the grass discharging path and the flow guide piece 20A is greater than or equal to 90 degrees. The grass discharging path is the extension direction of the side wall of the grass discharging port 171. Through the above arrangement, under the blocking of the flow guide piece 20A, part of the grass clippings in the first cutter deck 151A can directly enter the grass discharging port 171. Moreover, by limiting the included angle a between the flow guide piece 20A and the grass discharging path to an obtuse angle, the arrangement of the flow guide piece 20A is facilitated.

[0102] In some embodiments, a communication area 153A is formed between the second end 24A of the flow guide piece 20A and the edge of the grass mowing deck 15A. Part of the grass clippings in the first cutter deck 151A converge with the grass clippings in the second cutter deck 152A through the communication area 153A, and then enter the grass discharging port 171. A third plane 113 parallel to the first plane 111 and tangent to the front side of the second mounting portion is defined, and the first end 23A and the second end 24A are located on the rear side of the third plane 113, respectively. It can be understood that the first end 23A and the second end 24A are located between the second plane 112 and the third plane 113. The width of the communication area 153A is increased.

[0103] The grass mowing deck 15A is provided with a baffle 156 located inside the cutting chamber 150A and protruding rearward, the baffle 156 is substantially V-shaped, and the baffle 156 has an apex 1561 facing the rear side of the cutting chamber 150. The apex 1561 is located on the front side of the flow guide piece 20A, and it can be understood that the apex 1561 is substantially the narrowest position of the communication area 153A. The apex 1561 is located in the area of the second cutter deck 152A. The baffle 156 cooperates with the flow guide piece 20A to cause the first grass clippings cut by the first cutter deck 151A to be divided when entering the second cutter deck 152A (the side where the grass discharging port 171 is located), a first part of the grass clippings converges with the second grass clippings of the second cutter deck 152A (the part flowing in the same direction as the grass clippings in the second cutter deck 152A), and a second part of the grass clippings directly enters the grass discharging port 171. Exemplarily, the baffle 156 is integrally formed on the grass mowing deck 15A.

[0104] In one embodiment, as Figure 12 shown, a grass mowing machine 100 is also provided, the first cutter blade 131 is driven to rotate in a first direction by a first motor to generate a first airflow 41A driving the grass clippings to flow to the grass discharging port 171; the first airflow 41A includes a first part 411A and a second part 412A. The first part 411A flows to the grass discharging port 171 through a first flow path 45A; the second part 412A flows to the grass discharging port 171 through a second flow path 46A.

[0105] The first airflow 41A generated by the rotation of the first blade 131 causes the grass cut by the first cutter deck 151A to be split when entering the second cutter deck 152A. A portion of the grass is collected with the grass in the second cutter deck 152A (the portion flows in the same direction as the grass in the second cutter deck 152A) under the action of the second portion 412A of the first airflow 41A, and another portion of the grass directly enters the grass outlet 171 under the action of the first portion 411A of the first airflow 41A. The amount of grass collected by the second cutter deck 152A can be greatly reduced, the load on the second blade 132 can be reduced, and the problem of stalling can be improved. In addition, the side discharge performance and the grass chopping performance are not affected.

[0106] In some embodiments, the mower 100 further comprises a flow guide 20A formed on or connected to the mower deck 15A, the first flow path 45A is located on a first side of the flow guide 20A, and at least part of the second flow path 46A is located on a second side of the flow guide 20A. For example, the first flow path 45A is located on one side of the first guide surface 211A. By providing the flow guide 20A, the first flow path 45A and the second flow path 46A are isolated and divided.

[0107] In some embodiments, the flow guide 20A has a first end 23A close to the grass outlet 171 and a second end 24A away from the grass outlet 171 in the extension direction thereof, and the second end 24A is located in the intersection area of the first flow path 45A and the second flow path 46A. The first flow path 45A and the second flow path 46A are isolated by the second end 24A of the flow guide 20A, and the grass in the first cutter deck 151A is split by the second end 24A of the flow guide 20A. A portion of the grass flows with the grass in the second cutter deck 152A, and another portion of the grass directly enters the grass outlet 171.

[0108] As shown in Figure 10 The flow guide 20A is arranged between the first rotation center line 1311 of the first blade 131 and the second rotation center line 1321 of the second blade 132. The first rotation center line 1311 of the first blade 131 is the center position of the output shaft of the first motor, and the second rotation center line 1321 of the second blade 132 is the center position of the output shaft of the second motor. By the above arrangement, the flow guide 20A isolates the first flow path 45A and the second flow path 46A, and the grass in the first cutter deck 151A can be effectively split.

[0109] In some embodiments, the second blade 132 is driven to rotate around the first direction by a second motor, which is arranged coaxially with the first motor. By designing the second blade 132 to rotate in the same direction as the first blade 131, it can be ensured that the grass clippings entering the second cutterhead 152A through the second flow passage 46A can be smoothly merged with the grass clippings in the second cutterhead 152A. The first motor and the second motor are arranged coaxially, which can avoid the interference between the first blade 131 and the second blade 132, while the cutting area can be expanded to ensure the cutting efficiency. The first direction can be clockwise or counterclockwise.

[0110] In some embodiments, the second blade 132 is driven to rotate around the first direction by a second motor to generate the second airflow 42A that drives the grass clippings to flow to the grass outlet 171, and the second airflow 42A flows to the grass outlet 171 through the second flow passage 46A. By rotating the second blade 132 to form the second airflow 42A flowing to the grass outlet 171, the suction effect can be achieved, so that part of the grass clippings in the first cutterhead 151A can quickly enter the second flow passage 46A and flow to the grass outlet 171. The grass collecting performance can be further improved, the locked-rotor phenomenon of the second motor can be improved, the working current of the second motor can be reduced, and the endurance time of the whole machine can be improved.

[0111] In one embodiment, as shown in Figures 14 to 16 In one embodiment, as shown in

[0112] By arranging the flow guide 20A on the cutting deck 15A, the grass clippings cut by the first cutterhead 151A are divided when entering the second cutterhead 152A. Part of the grass clippings is merged with the grass clippings of the second cutterhead 152A, and the other part of the grass clippings directly enters the grass outlet 171. That is, the first grass clippings flow 43A formed by the grass clippings cut by the first cutterhead 151A is divided by the flow guide 20A when entering the area of the second cutterhead 152A. The first part 431A of the first grass clippings flow directly flows into the grass outlet 171, and only the second part 432A of the first grass clippings flow merges to form the second grass clippings flow 44A, which can greatly reduce the grass clippings collected by the second cutterhead 152A, reduce the load of the second blade 132, and improve the locked-rotor problem. In addition, the side discharge performance and the grass cutting performance are not affected.

[0113] As shown in Figures 14 to 19 Fig. 1, the grass cutting deck 15A includes a top wall 157A and a side wall 158A extending downwardly from the top wall 157A and forming a circumferential enclosure, the top wall 157A and the side wall 158A form the cutting chamber 150A described above. The grass cutting deck 15A is a one-piece component, the top wall 157A is provided with the second mounting portion 155, and the flow guide 20, 20A is also connected to the side of the top wall 157A facing the cutting chamber 150A. The side wall 158A is provided with two interruptions forming the grass outlet 171 and the grass discharge outlet of the side discharge assembly 16. In some embodiments, the interruptions of the grass outlet 171 and the grass discharge outlet of the side discharge assembly 16 are partially provided on the top wall 157A.

[0114] As shown in Figure 15 Fig. 1, the grass cutting deck 15A includes a stopper 159 formed on or connected to the side wall 158A of the cutting chamber 150A, the stopper 159 is disposed between the first rotation center line 1311 and the second rotation center line 1321. The stopper 159 is disposed at the position where the first cutterhead 151A and the second cutterhead 152A are connected. At least part of the stopper 159 protrudes inwardly into the cutting chamber 150A, and the closer the stopper 159 is to the bottom opening 1501A of the cutting chamber 150A, the more the stopper 159 protrudes inwardly. In some embodiments, in the axial direction of the cutting chamber 150A (i.e. the direction of the rotation center line), the stopper 159 is provided with a first end 1591 close to the bottom opening 1501A of the cutting chamber 150A, and a second end 1592 close to the top wall 157A of the grass cutting deck 15A, at least part of the first end 1591 protrudes more inwardly into the cutting chamber 150A than the second end 1592. Wherein the first end 1591 and the second end 1592 respectively have a side end face facing inwardly into the cutting chamber 150A, and at least part of the first side end face 1593 of the first end 1591 protrudes more inwardly into the cutting chamber 150A than the second side end face 1594 of the second end 1592.

[0115] In the present embodiment, the first cutting region 1313 of the first blade 131 is defined as the trajectory formed by the tip of the first blade 131 rotating one revolution (360°), and the second cutting region 1323 of the second blade 132 is defined as the trajectory formed by the tip of the second blade 132 rotating one revolution (360°). The region in the cutting chamber 150A which is neither covered by the first cutting region 1313 of the first blade 131 nor covered by the second cutting region 1323 of the second blade 132 is defined as the gap region 1322, and at least part of the stopper 159 is disposed in the gap region 1322.

[0116] The gap area 1322 is an area where both the first cutting area 1313 and the second cutting area 1323 are not covered, so the airflow generated by the rotation of the blade is relatively small in the gap area 1322, and in the grass discharging mode, the long or insufficiently cut grass clippings in the gap area 1322 are easy to fall off and cannot be discharged from the grass discharging port. In the related art, in order to reduce the gap area 1322, the cutting deck 15A side wall 158A extends into the gap area 1322, but such a structure causes the vegetation to be unable to enter the cutting chamber 150A, so that the gap area 1322 becomes a cutting blind area, and the problem of missed cutting of the vegetation is easy to occur. In the embodiment, the blocking block 159 structure is added to the cutting deck, and the first end 1591 of the blocking block 159 close to the bottom opening 1501A is more protruded into the inside of the cutting chamber 150A than the second end 1592 close to the top wall, so that an inwardly extending lip is formed at the bottom opening 1501A of the cutting chamber 150A, and the cut-off grass is cut again by the backflow when the cut-off grass touches the protruding first end 1591 of the blocking block 159, so that the residence time of the grass clippings in the cutting chamber 150A is prolonged. The blocking block 159 structure is added to the cutting deck 15A, and the second end 1592 of the blocking block 159 does not occupy the space in the cutting chamber 150A, so that the area of the cutting chamber 150A for accommodating the vegetation is ensured, and the problems of grass falling and cutting blind area are improved.

[0117] In the embodiment, the first side end face 1593 of the first end 1591 protruding more inwardly than the second end 1592 is located in the gap area 1322, and the most inwardly protruding position of the first end 1591 is substantially opposite to the closest position of the first cutting area 1313 and the second cutting area 1323.

[0118] As shown in Figures 17 to 18 , Figures 17 to 19 In the embodiment, the second side end face 1594 of the second end 1592 is substantially flush with the side wall 158A inside the cutting chamber 150A, and the second side end face 1594 of the second end 1592 is not protruded from the side wall 158A inside the cutting chamber 150A. The transition face 1595 is arranged between the first end 1591 and the second end 1592, and the transition face 1595 connects the first side end face 1593 of the first end 1591 and the second side end face 1594 of the second end 1592 smoothly. In the embodiment, the first side end face 1593 of the first end 1591 and the second side end face 1594 of the second end 1592 have a size difference, and the transition face 1595 is arranged by curve fitting and transition connection, so that the first side end face 1593 of the first end 1591, the transition face 1595 and the second side end face 1594 of the second end 1592 form a continuous and smooth smooth surface.

[0119] In the present embodiment, the grass outlet 171 is arranged at the second cutterhead 152A, and the first ends 1591 of the baffle blocks 159 are arranged with increasing height in the rotation direction of the second cutter blade 132. In some embodiments, one starting end of the first ends 1591 is flush with the second ends 1592, and the side end faces 1593 of the second ends 1592 are substantially flush with the side wall 158A inside the cutting chamber 150A. One starting end of the first side end faces 1593 of the first ends 1591 is also flush with the side wall 158A inside the cutting chamber 150A, so that the baffle blocks 159 do not form a sudden step with the inside of the cutting chamber 150A, and grass clippings are not accumulated at the step. The first side end faces 1593 of the first ends 1591 are arranged with increasing height in the rotation direction, so that a smooth curved surface is formed, and the fluid movement of the grass clippings flow is smooth, and the fluid movement is not blocked by a sudden step.

[0120] In some alternative embodiments, at least part of the first side end faces 1593 of the first ends 1591 of the baffle blocks 159 are more protruding towards the inside of the cutting chamber 150A than the second side end faces 1594 of the second ends 1592, and the height of the first ends 1591 increases in the rotation direction of the cutter blade. In some alternative embodiments, at least part of the first side end faces 1593 of the first ends 1591 of the baffle blocks 159 are more protruding towards the inside of the cutting chamber 150A than the second side end faces 1594 of the second ends 1592, and the height of the first ends 1591 decreases in the rotation direction of the cutter blade, that is, the first ends 1591 are arranged with a downward inclination in the up-down direction relative to the bottom surface of the cutting chamber 150A, and the bottom surface of the bottom opening 1501A of the first ends 1591 is substantially parallel or substantially flush with the bottom surface of the cutting chamber 150A, so as to reduce the missed cutting.

[0121] As Figure 16As shown, the stopper 159 is arranged at the position where the first cutter head 151 A and the second cutter head 152A are connected. The side end face of the stopper 159 located in the first cutter head 151 A belongs to the first cutter head 151 A, and the side end face of the stopper 159 located in the second cutter head 152A belongs to the second cutter head 152A. It can be understood that the side end face of the stopper 159 is also part of the side wall 158A of the cutting chamber 150A. At the connection position of the first cutter head 151 A and the second cutter head 152A, an arc surface 1581A protruding inward and forward is formed, and the stopper 159 at least partially coincides with the arc surface 1581A. The arc surface 1581A is formed by first bending inwardly and then outwardly from the side wall 158A. The most forward end of the arc surface 1581A forms a first apex P1. The second side end face 1594 of the second end 1592 is flush with at least part of the arc surface 1581A, and the second apex P2 of the most forward end of the second end 1592 is substantially flush with the first apex P1 of the arc surface 1581A in the axial direction. The third apex P3 of the most forward end of the first end 1591 is located forward of the second apex P2, and the third apex P3 of the most forward end of the first end 1591 is located forward of the first apex P1.

[0122] The gap region 1322 is formed at the position where the first cutter head 151 A and the second cutter head 152A are connected, and in the gap region 1322, there is a gap between the second cutting region 1323 formed by the second blade 132 and the side wall 158A of the second cutter head 152A. The gap between the second cutting region 1323 and the side wall 158A of the second cutter head 152A at the bottom opening 1501A is the smallest, and the gap is smaller than the gap between the second cutting region 1323 and the side wall 158A of the second cutter head 152A above the opening. In this embodiment, from the bottom opening 1501A upward, the value of the gap first gradually increases, and then remains substantially unchanged. In this embodiment, the value of the gap gradually increases from the third apex P3 to the second apex P2, and remains substantially unchanged from the second apex P2 to the first apex P1. For example, as shown in the figure, Figure 18 As shown, at the position of the third apex P3 at the bottom opening 1501A, the gap G1 between the second cutting region 1323 and the side wall 158A of the second cutter head 152A is greater than or equal to 10 mm and less than or equal to 30 mm. As shown in the figure, Figure 20 As shown, at the position of the second apex P2 or the first apex P1, the gap G2 between the second cutting region 1323 and the side wall 158A of the second cutter head 152A is greater than 30 mm and less than or equal to 50 mm. For example, at the position of the third apex P3 at the bottom opening 1501A, the gap G1 between the second cutting region 1323 and the side wall 158A of the second cutter head 152A is 24 mm, and at the position of the second apex P2 or the first apex P1, the gap G2 between the second cutting region 1323 and the side wall 158A of the second cutter head 152A is 40 mm.

[0123] In some embodiments, there is also a gap between the first cutting region 1313 formed by the first blade 131 and the side wall 158A of the first cutter deck 151A. The technical features of the gap between the second cutting region 1323 and the side wall 158A of the second cutter deck 152A are equally applicable to the gap between the first cutting region 1313 and the side wall 158A of the first cutter deck 151A. That is, the gap between the first cutting region 1313 and the side wall 158A of the first cutter deck 151A at the bottom opening 1501A is the minimum value, and the gap is smaller than the gap between the first cutting region 1313 and the side wall 158A of the first cutter deck 151A above the opening. In the present embodiment, the value of the gap gradually increases from the bottom opening 1501A upwards, and then remains substantially unchanged. In the present embodiment, the value of the gap gradually increases from the third vertex P3 to the second vertex P2, and remains substantially unchanged from the second vertex P2 to the first vertex PI.

[0124] In some embodiments, the stopper 159 described above is a separate component, and the stopper 159 is connected to the side wall 158A of the grass cutting deck 15A. For example, the stopper 159 is connected to the side wall 158A of the grass cutting deck 15A by fasteners. For example, the stopper 159 is detachably connected to the side wall 158A of the grass cutting deck 15A by fasteners. For example, the stopper 159 is non-detachably installed by welding, gluing, riveting or the like. For example, one stopper 159 can be provided, or a plurality of stoppers 159 can be provided. For example, a stopper 159 is provided in the gap region 1322 on the front side and the rear side of the grass cutting deck 15A, or a plurality of stoppers 159 are provided in one gap region 1322.

[0125] In some embodiments, the grass cutting machine is a hand-propelled grass cutting machine or a ride-on grass cutting machine. As shown in Figure 20 In the present embodiment, the ride-on grass cutting machine is a ride-on grass cutting machine 100B. In other alternative embodiments, the ride-on grass cutting machine is a stand-on grass cutting machine. The ride-on grass cutting machine 100B comprises an operating lever 120B, a main frame 12B, a seat 130B, a power output assembly 14B, a walking assembly, an operating assembly, and a power supply device. The main frame is used to carry the seat 130B, the power output assembly 14B, the walking assembly, the operating assembly, and the power supply device. The seat 130B is used for a user to sit on, and the seat 130B is installed to the main frame. The operating lever 120B is used to control the start, running speed, and stop of the grass cutting machine 100B. The walking assembly is used to enable the ride-on grass cutting machine 100B to walk on the lawn. The operating assembly is used for a user to operate to control the ride-on grass cutting machine 100B to walk and output power.

[0126] The power output assembly 14B includes an output member for outputting power to realize a mechanical function. The output member can be specifically a mowing element. The power output assembly 14B is further connected to the main frame, and in the embodiment, the power output assembly 14B can be specifically mounted to the lower side of the main frame. The power output assembly 14B further includes a motor and a chassis 122B. The mowing element is used to realize a mowing function, the motor is used to drive the mowing element to rotate at a high speed, and the chassis 122B is formed with an accommodation space for accommodating at least part of the motor and part of the mowing element. The power output assembly 14B can include more than one mowing element, and the number of corresponding motors can correspond to the number of mowing elements.

[0127] Figure 1 The manned riding mower shown can adopt the same or similar structure of the mowing deck 15 and the flow guide 20 as the ​ The manned riding mower shown can adopt the same or similar structure of the mowing deck 15 and the flow guide 20 as the

[0128] The basic principles, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the above embodiments do not limit the present application in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation fall within the protection scope of the present application.

Claims

1. A lawnmower characterised in that, The mower deck has a cutting chamber open downwardly, the cutting chamber forming at least one grass outlet; The cutting assembly is at least partially accommodated in the cutting chamber; the cutting assembly includes a first blade rotating around a first rotation center line and a second blade rotating around a second rotation center line; The mower deck includes a baffle, the baffle being formed on or connected to a side wall of the cutting chamber, and the baffle being disposed between the first rotation center line and the second rotation center line, at least part of the baffle protruding inwardly into the cutting chamber, and the baffle protruding inwardly more as it is closer to the bottom opening of the cutting chamber. In the axial direction of the cutting chamber, the baffle is provided with a first end close to the bottom opening of the cutting chamber and a second end close to the top wall of the mower deck, and at least part of the first end protrudes inwardly into the cutting chamber more than the second end. The first end and the second end each have a side end face toward the inside of the cutting chamber, and at least part of the side end face of the first end protrudes inwardly into the cutting chamber more than the side end face of the second end.

2. The lawnmower as claimed in claim 1, characterized in that The side end face of the second end is substantially flush with the side wall inside the cutting chamber, and a transition face is provided between the first end and the second end, the transition face smoothly connecting the side end face of the first end and the side end face of the second end.

3. The lawnmower of claim 2, wherein, The baffle protrudes inwardly at the first end in an increasing manner along the rotation direction of the second blade.

4. The lawnmower of claim 3, wherein, The cutting chamber is provided with a first cutter disc and a second cutter disc, the first blade is at least partially disposed in the first cutter disc, the second blade is at least partially disposed in the second cutter disc, and the baffle is disposed at the connection position of the first cutter disc and the second cutter disc.

5. The mower of claim 2, wherein, At the connection position of the first cutter disc and the second cutter disc, an arc face protruding inwardly and forwardly is formed, and the baffle at least partially coincides with the arc face.

6. The mower of claim 2, wherein, The foremost end of the arc face forms a first vertex, and the third vertex of the foremost end of the first end is located forward of the first vertex.

7. The lawnmower as claimed in claim 6, characterized in that A first cutting area of the first blade is defined as a locus formed by the tip of the first blade rotating one revolution, and a second cutting area of the second blade is defined as a locus formed by the tip of the second blade rotating one revolution; 8. The lawnmower of claim 7, wherein, An area in the cutting chamber that is neither covered by the first cutting area of the first blade nor covered by the second cutting area of the second blade is defined as a gap area, and at least part of the baffle is disposed in the gap area.

9. The lawnmower of claim 8, wherein, In the gap area, at the bottom opening, the gap between the second cutting area and the side wall of the second cutter disc is greater than or equal to 10 mm and less than or equal to 30 mm, and at the position of the first vertex, the gap between the second cutting area and the side wall of the second cutter disc is greater than 30 mm and less than or equal to 50 mm. The mower deck has a cutting chamber open downwardly, the cutting chamber forming at least one grass outlet; 10. The lawnmower as claimed in claim 9, characterized in that ​ 11. A lawnmower characterised in that, ​ ​ ​ a cutting assembly at least partially housed in the cutting chamber; the cutting assembly comprising a first blade rotating around a first rotation center line and a second blade rotating around a second rotation center line; a first cutting area defined by a locus of rotation of a tip of the first blade; and a second cutting area defined by a locus of rotation of a tip of the second blade; a void area defined by a region in the cutting chamber that is neither covered by the first cutting area of the first blade nor covered by the second cutting area of the second blade, the grass cutting deck being at least partially provided with a lip structure extending inwardly at a bottom opening of the void area.

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