CN215379957U

CN215379957U - A back sprue and lawn mower for lawn mower

Info

Publication number: CN215379957U
Application number: CN202122020382.2U
Authority: CN
Inventors: 董建华
Original assignee: Globe Jiangsu Co Ltd
Current assignee: Globe Jiangsu Co Ltd
Priority date: 2021-08-25
Filing date: 2021-08-25
Publication date: 2022-01-04
Anticipated expiration: 2031-08-25

Abstract

The utility model provides a rear block for a grass pusher and the grass pusher, wherein the rear block is arranged at a grass collecting channel at the bottom of the grass pusher and comprises: the baffle is matched with the grass collecting channel; the fixed plate, through the mounting with the lawn mower fixed connection, be provided with a plurality of spacing holes on the fixed plate, and each spacing hole correspondence is provided with at least two and has elastic pore walls, and at least two the pore wall separates each other and follows the circumference in spacing hole is arranged, the pore wall is located the bottom of fixed plate, with lawn mower fixed connection. The grass chopping device can prevent cut grass from being retained on the second baffle plate to generate blockage, so that the grass chopping effect is influenced, the grass chopping device is convenient to disassemble and assemble, accurate in positioning after being assembled, and capable of ensuring that the rear blocking block is not loosened under the impact force.

Description

A back sprue and lawn mower for lawn mower

Technical Field

The utility model belongs to the technical field of garden tools, and particularly relates to a rear blocking block for a grass pusher and the grass pusher.

Background

At present, lawn mowers are applied more and more in the market, and users have higher and higher requirements on the lawn mowers in the actual use process, such as higher and higher requirements on the grass-mowing and grass-collecting effects of the lawn mowers, use convenience, use safety and the like.

Among them, wheeled tools such as a lawnmower are commonly used home tools. In this type of garden tool, a push rod is usually provided on the main body thereof for the convenience of operation. When the tool is required to be operated or stored, the fixed angle of the push rod needs to be adjusted to adapt to different requirements. However, the conventional push rod adjusting structure is usually disposed at the pivot joint of the push rod and the body; when the operator operates, the operator needs to bend down to operate and loosen the lower part of the push rod. Therefore, the operator is easily inconvenienced and tired. Or the angle between the push rod component of the grass mower and the body of the grass mower is relatively fixed, so that the requirements of different users cannot be met when the grass mower is used for mowing, and the operation is very inconvenient. And usually, the transparent cover flip is arranged on the battery pack of the garden tool, so that the battery pack can be conveniently inserted and taken out. The traditional transparent cover flip cover has a complex installation process and poor firmness.

The grass pushers typically have two modes, a grass cutting mode and a grass storage mode, and when in the grass storage mode, cut grass blades pass through the grass cutting channel and enter the grass storage bag. When the grass cutting machine is in a grass cutting mode, the rear blocking block needs to be installed to realize that the grass cutting cavity channel is a complete cavity channel. The existing grass pushing machine is inconvenient to disassemble and assemble the rear block, and the rear block is easy to loosen under the condition of impact force.

Also, during operation of the electric lawnmower, the electric motor and the electrical components generate heat. The generated heat may also adversely affect the electric motor and/or the electrical components if the generated heat is not transferred to the surrounding environment.

In addition, because the types of lawns are different, the types and the heights of weeds are also different, and the requirements of operators on the heights of the lawns are different, most of the grass mowers in the current market are provided with height adjusting structures so as to meet the requirements of different operators on the mowing heights. The altitude mixture control structure of present grass mower generally adjusts the spanner through rotating and realizes the regulation between different gear heights, adjusts the spanner and is located rear wheel one side, realizes cutting altitude mixture control through adjusting different gears. However, when a lawn with a high cutting height is cut, the adjustment wrench is wound by grass once, and the cutting height may be inconsistent due to the change of the gear.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model provides a rear block for a grass mower and the grass mower, which aim to solve the problems that the rear block is inconvenient to assemble and disassemble and the rear block is easy to loosen under the impact force of the conventional grass mower.

The utility model provides a rear block for a grass pusher, which is arranged at a grass collecting channel at the bottom of the grass pusher and comprises:

the baffle is matched with the grass collecting channel;

the fixed plate, through the mounting with the lawn mower fixed connection, be provided with a plurality of spacing holes on the fixed plate, and each spacing hole correspondence is provided with at least two and has elastic pore walls, and at least two the pore wall separates each other and follows the circumference in spacing hole is arranged, the pore wall is located the bottom of fixed plate, with lawn mower fixed connection.

In one embodiment of the utility model, the baffle plates comprise a first baffle plate and a second baffle plate, the first baffle plate is an arc-shaped baffle plate, and the radian of the arc-shaped baffle plate is matched with the radian of the side wall of the cutter accommodating cavity at the bottom of the grass pushing machine.

In one embodiment of the utility model, the second baffle is curved to a side away from the first baffle.

In an embodiment of the present invention, a surface of the second baffle is an arc surface, and a bottom surface of the second baffle is provided with a plurality of reinforcing ribs.

In one embodiment of the utility model, the first baffle plate, the second baffle plate and the fixing plate are integrally formed.

In one embodiment of the utility model, the fixing member comprises a head structure and a tail structure, the head structure is a spherical structure or an elliptical structure, and the tail structure is a self-tapping screw for fixedly connecting to the grass mower.

In an embodiment of the present invention, a plurality of protrusions are disposed on the bottom of the fixing plate, and the plurality of protrusions are located around the limiting hole.

The utility model also proposes a lawnmower comprising:

the bottom of the chassis is provided with a cutter accommodating cavity, and the chassis comprises a base plate and a tail plate;

a drive assembly mounted on the chassis;

the cutter assembly is connected with the driving assembly and is positioned in the cutter accommodating cavity;

back sprue installs the collection grass passageway department of lawnmower bottom, back sprue includes:

the baffle is matched with the grass collecting channel;

the fixed plate, through the mounting with the tailboard fixed connection of grass pusher, be provided with a plurality of spacing holes on the fixed plate, and each spacing hole correspondence is provided with two at least elastic pore walls that have, and at least two the pore wall separates each other and follows the circumference in spacing hole is arranged, the pore wall is located the bottom of fixed plate, with tailboard fixed connection.

In one embodiment of the utility model, an annular boss is arranged at a middle position of the bottom of the cutter accommodating cavity, and a first grass collecting channel is formed between the annular boss and the side wall of the cutter accommodating cavity.

In one embodiment of the utility model, the baffle is matched with the first grass-collecting channel.

In one embodiment of the utility model, the base plate and the tail plate are fixedly connected and form a second grass collecting channel, and the first grass collecting channel gradually increases in depth along the circumferential direction and is communicated with the second grass collecting channel at the deepest depth.

In one embodiment of the utility model, the rear blocking block is arranged at the joint of the grass collecting channel and the cutter containing cavity, and the second grass collecting channel and the cutter containing cavity are separated from each other, so that the cutter containing cavity forms a complete cavity.

According to the grass pushing machine provided by the utility model, the rear blocking block is arranged at the grass collecting channel at the bottom of the grass pushing machine, the surface of the second baffle plate of the rear blocking block is a cambered surface, so that cut grass is prevented from being retained on the second baffle plate to generate blocking, the grass chopping effect is further influenced, the grass collecting channel can be better sealed, the reinforcing ribs are arranged, the plurality of convex blocks are arranged at the bottom of the fixing plate, and the structural strength of the rear blocking block is improved. And still through be provided with a plurality of spacing holes on the fixed plate, and each spacing hole correspondence is provided with two at least pore walls that have certain elasticity for its dismouting process is comparatively convenient, and packs into the back location accuracy, and can guarantee that the back sprue is not becoming flexible receiving the impact force condition.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural view of a grass mower according to the present invention.

FIG. 2 is a schematic view of the assembly of the present invention with a grass-collecting frame.

FIG. 3 is a schematic view illustrating an assembly of a driving assembly and a chassis according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a chassis according to an embodiment of the utility model.

FIG. 5 is a schematic structural diagram of a putter assembly according to an embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a position limiting assembly in the push rod assembly according to an embodiment of the present invention.

FIG. 7 is a schematic view of the cross bar and cross bar mounting plate assembly of the push bar assembly according to an embodiment of the present invention.

Fig. 8 is a schematic structural diagram of a position limiting plate in the tappet assembly according to an embodiment of the present invention.

FIG. 9 is a schematic view of a portion of a push rod of the push rod assembly according to an embodiment of the present invention.

FIG. 10 is a schematic view of the push rod assembly in a second position according to an embodiment of the present invention.

FIG. 11 is a diagram illustrating the push rod assembly in a third position according to an embodiment of the present invention.

FIG. 12 is a bottom view of a lawnmower according to an embodiment of the present invention.

FIG. 13 is a schematic view of the bottom assembled block of the lawnmower according to an embodiment of the present invention.

Fig. 14 is a schematic structural diagram of a back block in an embodiment of the utility model.

Fig. 15 is a schematic top view of a rear blocking block according to an embodiment of the present invention.

Fig. 16 is another angle structure diagram of the back blocking block according to an embodiment of the present invention.

Fig. 17 is a schematic view of a fixing member according to an embodiment of the utility model.

Fig. 18 is an enlarged schematic view at C in fig. 4.

Fig. 19 is a schematic view of the assembly of the chassis and the battery pack receiving cavity according to an embodiment of the utility model.

Fig. 20 is a schematic structural view of a battery pack accommodating cavity according to an embodiment of the utility model.

Fig. 21 is a front view of fig. 19.

Fig. 22 is a sectional view taken along H-H in fig. 21.

FIG. 23 is a schematic diagram illustrating a partial exploded view of a lawnmower according to an embodiment of the present invention.

FIG. 24 is a schematic view of the assembly of the driving assembly and the cutter assembly according to an embodiment of the present invention.

FIG. 25 is a schematic view of another angle of the lawn mower according to an embodiment of the present invention.

Fig. 26 is an enlarged schematic view at F in fig. 25.

Fig. 27 is a schematic structural diagram of a height adjusting mechanism according to an embodiment of the present invention.

Fig. 28 is a front view of fig. 27.

FIG. 29 is a schematic view of the tail plate and the height adjustment mechanism of an embodiment of the present invention.

Fig. 30 is a bottom view of fig. 29.

Fig. 31 is a partial structural schematic view of a height adjustment mechanism according to an embodiment of the present invention.

Fig. 32 is a schematic structural diagram of a gear plate in the height adjustment mechanism according to an embodiment of the present invention.

Fig. 33 is another schematic view of the height adjustment mechanism according to an embodiment of the present invention.

Fig. 34 is a top view of fig. 29.

Fig. 35 is a cross-sectional view taken along line D-D of fig. 34.

FIG. 36 is a schematic view of a position indicator of the height adjustment mechanism according to an embodiment of the present invention.

FIG. 37 is a schematic view of the assembly of the gear indicator and the base plate according to an embodiment of the present invention.

Fig. 38 is a schematic structural view of a housing according to an embodiment of the present invention.

Fig. 39 is a schematic view illustrating an assembly of the cover and the flip structure according to an embodiment of the present invention.

Fig. 40 is a schematic structural diagram of a flip structure according to an embodiment of the utility model.

Fig. 41 is a schematic diagram of an inner side structure of a flip structure according to an embodiment of the utility model.

Fig. 42 is a schematic structural diagram of a flip fixing base in a flip structure according to an embodiment of the utility model.

Description of reference numerals:

a push rod assembly 30; a cutter assembly 40; a drive assembly 50; a tool accommodating chamber 101; a front wheel 102; a rear wheel 103; a base plate 11; a tail plate 12; a first groove 110; a front wheel axle 111; a second groove 112; a rear wheel axle 113; a push rod mount 114; a limit plate 31; a cross bar 33; a stop assembly 34; a first push rod 301; a second pushrod 302; a U-shaped push-up rod 303; a switch box 304; a notch 322; a rail mounting plate 331; a first mounting plate 3311; a second mounting plate 3312; a through-hole 3313; a barb structure 3314; a first limiting structure 311; a second limiting structure 312; a third limiting structure 313; a grass collecting frame 1001; a support plate 314; a first stopper hole 3111; a second limiting hole 3131; a spring pin 341; a connecting piece 342; a spring 343; a pin 344; a wire rope 345; an oblong through-hole 3421; a pad 3411; an annular boss 1011; a first grass-collecting channel 1012; a second grass collecting channel 1013; a rear blocking piece 60; a joint 121; a blade 41; a clearance via 501; an impeller 502; a blade 503; a first baffle plate 61; a second baffle 62; a fixed plate 63; reinforcing ribs 622; a stopper hole 631; an aperture wall 632; a fixing member 64; a head structure 641; a tail structure 642; a bump 633; a motor mounting hole 1101; a ramp structure 1102; a baffle 1103; a plate member 1104; an opening 1105; a battery pack receiving cavity 115; a motor housing 116; a cavity wall 1151; a stiffener plate 1106; an air intake channel 1152; a curved portion 1153; a first air inlet 21; a decorative cover 211; an air filter 1154; a boss 7111; a recess 104; a tail cap mount 117; a tail cap 118; a spindle 1171; a spring member 1172; a second intake 1173; a vent 1161; a raised plate 1174; a height adjustment structure 70; a shift plate 71; a stopper rod 72; a link 73; a pressure plate 1002; a body portion 1131; an axle portion 1132; a connecting portion 711; a shift portion 712; a shift range groove 713; a slideway 714; an adjustment mechanism 74; a first pin 731; a second pin 732; a connecting plate 1112; an adjustment button 741; an adjustment lever 742; a return spring 743; an adjusting connecting rod 7411; a key 7412; a platform structure 7421; a notch 121; a mounting groove 733; a gear indication board 75; an arc surface 751; a first pin 752; a second column pin 753; the semicircular grooves 754; an identification hole 23; a through hole 24; a flip structure 80; a flip cover fixing seat 81; a flip cover 82; a stiffener structure 83; a snap structure 811; a card slot structure 812; a through hole 813; a swing arm mounting groove 814; a threaded hole 815; a swing arm structure 821; rotating the shaft 822.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The utility model is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.

It should be noted that the drawings provided in the present embodiment are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.

To solve the above problems, as shown in fig. 1 to 41, the present invention provides a garden tool, taking a grass mower 100 as an example, comprising a chassis 10, a housing 20, a push rod assembly 30, a working assembly and a driving assembly 50, wherein the driving assembly 50 is mounted on the chassis 10, the working assembly can be a cutter assembly 40, the cutter assembly 40 is located in a cutter accommodating cavity 101 at the bottom of the chassis 10 and is fixedly connected with an output shaft of the driving assembly 50, the housing 20 is covered on the chassis 10 and encloses the driving assembly 50, and front wheels 102 and rear wheels 103 are respectively mounted on two sides of the bottom of the chassis 10, so as to move the grass mower 100.

As shown in fig. 1 to 4, in the present embodiment, the chassis 10 includes a base plate 11 and a tail plate 12, the tail plate 12 is fixedly installed at a rear portion of the base plate 11, and a first groove 110 is arranged on one side of the base plate 11 far away from the tail plate 12, for accommodating a front wheel axle 111, the front wheel 102 is mounted at two ends of the front wheel axle 111, the tail plate 12 is also provided with a second groove 112, for accommodating a rear wheel axle 113, rear wheels 103 being mounted to both ends of said rear wheel axle 113, the front wheels 102 and the front wheel axle 111, and the rear wheels 103 and the rear wheel axle 113 are rotatably connected, that is, the front wheels 102 and the rear wheels 103 are freely rotatable about the front wheel shaft 111 and the rear wheel shaft 113 as rotation centers, so as to move the lawnmower 100, and a grass-collecting frame 1001 is detachably mounted at the tailgate 12 so as to store the cut grass.

As shown in fig. 1 to 4, in this embodiment, the push rod assembly 30 is installed on one side of the chassis 10 close to the rear wheel 103, specifically, push rod installation seats 114 are provided on two sides of the top surface of the tail portion of the base plate 11, and one end of the push rod assembly 30 is connected with the push rod installation seats 114, so as to push the grass mower 100 to move by using the push rod assembly 30.

As shown in fig. 1 and 5 to 9, in this embodiment, the push rod assembly 30 includes a limiting plate 31, a push rod, a cross rod 33 and a limiting assembly 34, the limiting plate 31 is fixedly connected to the push rod mounting seat 114, the push rod is rotatably connected to the limiting plate 31 through a rotating member 321, the rotating member 321 is rotatably connected to the limiting plate 31, that is, the push rod can rotate with the rotating center of the rotating member 321 as the rotating center, so as to rotate the push rod to different positions, and limit the position through the limiting assembly 34 and the limiting plate 31, the push rod is of a hollow structure, so as to accommodate the limiting assembly 34, and the push rod includes a first push rod 301 and a second push rod 302, and the cross rod 33 is installed between the first push rod 301 and the second push rod 302.

As shown in fig. 1 and fig. 5 to 9, in the present embodiment, an end of the first push rod 301 and an end of the second push rod 302 away from the chassis 10 are connected by a U-shaped push-up rod 303. A switch box 304 is fixed on the U-shaped upper push rod 303, and the main knife motor can be started through double actions of a button and a switch handle on the switch box 304.

As shown in fig. 1 and 5 to 9, in this embodiment, the first push rod 301 and the second push rod 302 have the same structure, taking the first push rod 301 as an example for illustration, a notch 322 is provided at one end of the push rod away from the push rod mounting seat 114, a cross rod mounting plate 331 is mounted at the notch 322, the cross rod mounting plate 331 is adapted to the notch 322, the cross rod mounting plate 331 includes a first mounting plate 3311 and a second mounting plate 3312, the first mounting plate 1 and the second mounting plate 3312 are respectively mounted at two sides of the notch 322 to close the notch 322, a through hole 3313 is provided on the cross rod mounting plate 331 to facilitate connection of the cross rod 33, and the second mounting plate 3312 is inwardly extended to form a plurality of barb structures 3314, and the barb structures 3314 are arranged along the circumferential direction of the through hole 3313, so as to limit the cross bar 33, and prevent the cross bar 33 from shaking between the first push rod 301 and the second push rod 302.

As shown in fig. 1, 5 to 9, in the embodiment, a plurality of limiting structures are distributed on the limiting plate 31 to cooperate with the limiting assembly 34, so as to fix the pushing rod at different positions, so that the lawn mower 100 is in different use states or is convenient to store. Specifically, the limiting plate 31 extends in a direction away from the crossbar mounting plate 331 to form a first limiting structure 311, a second limiting structure 312 and a third limiting structure 313, and the first limiting structure 311, the second limiting structure 312 and the third limiting structure 313 are arranged at intervals along the circumferential direction. As shown in fig. 1, when the push rod assembly 30 is in the first position and the limit assembly 34 is engaged with the first limit structure 311, the push rod is arranged obliquely upward along the X direction, and the grass mower 100 is in the working state; as shown in fig. 10, when the push rod assembly 30 is in the second position, and the limit assembly 34 is engaged with the second limit structure 312, the push rod is arranged obliquely upward in the direction opposite to the X direction, at this time, the grass collecting frame 1001 can be detached from the tailgate 12 and the cross rod 33 can be hung, and when the push rod is in the second position, because the push rod is arranged obliquely upward in the direction opposite to the X direction, the push rod is stabilized in the second position by the action of gravity and the support action of the baffle plate in the hanging grass collecting frame 1001; when the push rod assembly 30 is in the third position and the stop assembly 34 is engaged with the third stop structure 313, as shown in fig. 11, the push rod is disposed in the direction opposite to the direction X, and the lawnmower 100 can be positioned vertically such that the rear wheel 103 and the support plate 314 of the lawnmower 100 contact the ground to support the lawnmower 100 for storage. It should be noted that the supporting plate 314 is fixedly connected to or integrally formed with the limiting plate 31.

As shown in fig. 1 and 6 to 11, in this embodiment, the first position-limiting mechanism 311 is provided with a first position-limiting hole 3111, the third position-limiting mechanism 313 is also provided with a second position-limiting hole 3131, and the elastic pin 341 of the position-limiting component 34 is matched with the first position-limiting hole 3111 or the second position-limiting hole 3131 to fix the push rod component 30 at the first position or the third position, so that the grass mower 100 is in the working state or the storage state. The second position-limiting mechanism 312 is a stop plate, and the elastic pin 341 is engaged with the stop plate, so that the push rod assembly 30 is located at the second position.

As shown in fig. 1, 6 to 11, in this embodiment, specifically, the limiting assembly 34 includes an elastic pin 341, a connecting piece 342, a spring 343, a pin 344, and a wire rope 345, one end of the elastic pin 341 is fixedly connected to the connecting piece 342, an oblong through hole 3421 is provided on the connecting piece 342, the pin 344 passes through the push rod and the rotating piece 321 to fix the push rod to the limiting plate 31, the push rod can rotate along the pin 344, the connecting piece 342 is provided with the oblong through hole 3421, and the pin 344 passes through the oblong through hole 3421 to prevent the connecting piece 342 from being affected by pulling when the angle of the push rod is adjusted. The pin 344 is fixedly connected to the push rod, the spring 343 is sleeved on the elastic pin 341 and is located between the connecting piece 342 and a pad 3411 at the front end of the elastic pin 341, one end of the steel wire rope 345 is connected to the connecting piece 342, the other end is connected to the cross bar mounting plate 331, when the push rod needs to be rotated, the cross bar 33 is pulled to drive the cross bar mounting plate 331 to move upwards on the push rod along the notch 322 thereof, so that the elastic pin 341 retracts into the push rod, and is separated from the first limiting structure 311, the second limiting structure 312 or the third limiting structure 313, so that the push rod can rotate freely, when the push rod rotates to a required position, the cross bar 33 is released, the elastic pin 341 automatically resets to be matched with the first limiting structure 311, the second limiting structure 312 or the third limiting structure 313, so that the push rod assembly 30 is fixed at a first position, a second position, a third position, or a third position, A second position or a third position. In this embodiment, the push rod assembly 30 can be fixed to a desired position with a single hand, and an operator can pull the cross bar 33 while standing on the left, right, and back sides of the lawnmower 100, which is very convenient to operate.

As shown in fig. 1 and 12, in the present embodiment, an annular boss 1011 is disposed at a middle position of the bottom of the tool accommodating chamber 101, and the output shaft of the driving assembly 50 is disposed at a middle position of the annular boss 1011, so as to facilitate mounting of the tool assembly 40. And a first grass collecting channel 1012 is formed between the annular boss 1011 and the side wall of the cutter accommodating cavity 101, a second grass collecting channel 1013 is formed between the tail plate 12 and the base plate 11, and the first grass collecting channel 1012 gradually increases in depth along the annular direction and is communicated with the second grass collecting channel 1013 at the deepest depth.

The lawnmower 100 shown in fig. 1, 11, and 12 has two operating modes, a grass storage mode and a grass chopping mode. When the grass mower 100 is in the grass storage mode, grass cut by the cutter assembly 40 is discharged into a grass collecting frame 1001 mounted at the tail of the grass mower 100 along the second grass collecting channel 1013 to realize grass storage; when the grass mower 100 is in the grass chopping mode, the rear block 60 needs to be installed, the bottom of the tail plate 12 is provided with a joint 121 for connecting with the rear block 60, so as to install the rear block 60 at the joint of the second grass collecting channel 1013 and the cutter accommodating cavity 101, so as to separate the second grass collecting channel 1013 and the cutter accommodating cavity 101 from each other, so that the cutter accommodating cavity 101 forms a complete chamber, cut grass cannot enter the second grass collecting channel 1013, and the cut grass can only be continuously cut by the blades 41 in the cutter assembly 40 in the cutter accommodating cavity 101, so as to achieve the purpose of grass chopping, and the chopped grass falls directly to the ground.

As shown in fig. 1 and 12 to 16, in the present embodiment, the rear blocking piece 60 includes a first blocking plate 61, a second blocking plate 62 and a fixing plate 63, the first blocking plate 61 is an arc-shaped blocking plate, and the arc-shaped blocking plate has an arc shape matched with the arc shape of the side wall of the cutter accommodating chamber 101 so as to mount the rear blocking piece 60, the second blocking plate 62 is fixedly connected to one side of the first blocking plate 61 along the arc direction of the first blocking plate 61, and the second blocking plate 62 is matched with the first grass collecting channel 1012, while the side of the second blocking plate 62 away from the first blocking plate 61 is bent to the side away from the first blocking plate 61 so as to completely block the gap between the second blocking plate 62 and the first grass collecting channel 1012, and the fixing plate 63 is fixed to the side of the first blocking plate 61 away from the second blocking plate 62 for fixedly connecting with the tail plate 12, to separate said second grass-collecting channel 1013 from said cutter accommodating chamber 101.

As shown in fig. 1 and 12 to 16, it should be noted that the surface of the second baffle 62 is a cambered surface to prevent the cut grass from being retained on the second baffle 62 and blocking the second baffle 62, so as to affect the grass chopping effect, and the grass collecting channel can be better closed, and a plurality of ribs 622 are provided on the bottom surface of the second baffle 62 to enhance the strength of the second baffle 62, so that the second baffle 62 is not easily deformed. In this embodiment, the first baffle 61, the second baffle 62 and the fixing plate 63 are integrally formed to enhance the structural strength thereof.

As shown in fig. 1, 12 to 17, in the present embodiment, a plurality of limiting holes 631 are disposed on the fixing plate 63, and each limiting hole 631 is correspondingly provided with at least two hole walls 632 with certain elasticity, and at least two of the hole walls 632 are spaced from each other and arranged along the circumferential direction of the limiting hole 631, and are located at the bottom of the fixing plate 63 for being fixedly connected with the tail plate 12. In this embodiment, the rear blocking piece 60 is fixedly connected to the tail plate 12 through a fixing member 64, and the fixing member 64 is matched with the limiting hole 631, specifically, the fixing member 64 includes a head structure 641 and a tail structure 642, the head structure 641 is, for example, a spherical structure or an elliptical structure, and the tail structure 642 is a self-tapping screw for connecting to the tail plate 12. When the rear block 60 needs to be installed, the fixing member 64 is first connected to the connecting portion 121 of the tail plate 12, and then the limiting hole 631 of the rear block 60 is aligned with the head structure 641 of the fixing member 64, because the hole wall 632 of the limiting hole 631 is elastic, the head structure 641 of the fixing member 64 is pressed into the limiting hole 631 by pressing the rear block 60 downward with force, so as to fix the rear block 60 on the tail plate 12.

As shown in fig. 1, 12 to 17, when the rear block 60 needs to be taken out, the rear block 60 is held by both hands, and is pulled upward, so that the position-limiting hole 631 of the rear block 60 can be easily removed from the head structure 641 of the fixing member 64. In addition, it should be noted that a plurality of bumps 633 are disposed on the bottom of the fixing plate 63, and the bumps 633 are located around the limiting hole 631, so as to improve the strength of the periphery of the limiting hole 631 of the rear block 60, and ensure that the periphery of the limiting hole 631 is not damaged when the rear block 60 is pressed downward and pulled upward. The structure is simple and convenient to manufacture, firm and durable in structure, free of clamping stagnation and accurate in positioning after being installed, so that the rear plugging block 60 is guaranteed not to be loosened under the condition of impact force.

As shown in fig. 4 and 18, in the operation of the electric grass mower, the motor, the electric part and other components of the grass mower generate heat, when a certain temperature is reached, the machine fails, so that it is necessary to ensure the heat dissipation effect of the grass mower to ensure that the heat can be effectively and timely dissipated, thereby preventing the motor and the electric part from failing to operate due to an excessively high temperature, and similarly, when the flowing air enters the interior of the grass mower and passes through the motor, dust in the air is accumulated in the interior of the grass mower or enters the motor, thereby affecting the normal operation of the motor, so that attention is paid to dust prevention while dissipating heat, specifically, as shown in fig. 18 to 22, a battery pack accommodating cavity 115 is installed on the chassis 10, and is used for installing a battery pack which provides power for the grass mower 100 to drive the cutter assembly 40 to rotate, and a motor cover 116 is installed on the bottom of the battery pack accommodating cavity 115 near the tail plate 12, to house the motor 50 and the electrical components. It should be noted that a certain gap is left between the bottom surface of the battery pack accommodating cavity 115 and the base plate 11 to ensure that sufficient air enters the interior of the lawn mower, meanwhile, a motor mounting hole 1101 is formed in the base plate 11 for mounting the motor 50, and a bent structure is formed between the gap between the bottom surface of the battery pack accommodating cavity 115 and the base plate 11 and a plane where the motor mounting hole 1101 is located to prevent excessive dust from entering the interior of the motor 50, thereby affecting the normal operation of the motor 50.

In this embodiment, the motor 50 is installed at the motor installation hole 1101, an air inlet channel 1152 is formed between the battery pack accommodating cavity 115 and the base plate 11, the air inlet channel 1152 leads to the motor housing 116 to facilitate the air inlet from the front end of the grass mower 100 and leads the air inlet into the motor housing 116 to dissipate heat of the motor 50 and the electrical components, and in addition, the air entering from the front end of the grass mower 100 passes through at least one bent portion 1153 in the air inlet channel 1152 to prevent dust from entering the motor.

In this embodiment, as shown in fig. 19 to 24, the cover 20 is disposed on the chassis 10, and a first air inlet 21 is disposed at a front side of the cover 20, and air entering the interior of the lawnmower 100 from the first air inlet 21 enters the air inlet channel 1152 from an air inlet and enters the motor cover 116 from an air outlet to dissipate heat of the motor 50 and the electrical components. And, the wind that passes through inlet air channel 1152 can pass through the chamber wall that the battery package held the chamber 115, and then can hold the battery package in the chamber 115 and cool down, avoids the battery package to lose efficacy because of the high temperature work.

Specifically, one end of the air intake channel 1152, which is communicated with the interior of the motor housing 116, is close to the bottom of the motor 50, that is, close to the plane where the motor mounting hole 1101 is located. In addition, in this embodiment, a plurality of clearance through holes 501 are also formed in the housing of the motor 50, an impeller 502 is disposed at the bottom of the motor 50, the impeller 502 is fixedly connected to the output shaft of the motor 50, a plurality of blades 503 are disposed on one side of the impeller 502 close to the motor 50, and the impeller 502 is further used for mounting the cutter assembly 40.

When the motor 50 drives the cutter assembly 40 to rotate, the impeller 502 also rotates along with the cutter assembly 40, so as to drive the air to flow under the rotation of the impeller 502, so that the external air enters the interior of the mower from the first air inlet 21 at the front side of the mower, and enters the motor housing 116 through the air inlet channel 1152, because one end of the air inlet channel 1152, which is communicated with the interior of the motor housing 116, is close to the bottom of the motor 50, the entering air moves upwards outside the housing of the motor 50 and along the bottom of the motor 50, and then is discharged outside the mower from the top of the motor 50 through the gap through hole 501 on the motor 50, so as to achieve the heat dissipation effect on the motor 50 with the maximum effect.

It should be noted that, when the air is driven to flow by the rotation of the impeller 502 and the motor 50 is cooled along with the flowing air entering the interior of the grass mower, dust tends to enter the interior of the grass mower along with the flowing air, and further enters the motor 50, so as to affect the normal operation of the motor, in this embodiment, at least one bent portion 1153 is disposed in the air inlet channel 1152, and the wind entering from the front end of the grass mower 100 passes through at least one bent portion 1153 in the air inlet channel 1152, so as to block the dust from entering the interior of the motor.

Meanwhile, in this embodiment, a plurality of inclined plane structures 1102 are further arranged along the circumferential direction of the motor mounting hole 1101 at intervals, and when dust enters the interior of the grass mower 100 along with flowing air, the dust can be timely discharged through the inclined plane structures 1102, so that the dust is prevented from being accumulated in the interior of the grass mower 100 or entering the interior of the motor 50, and further the normal operation of the motor is influenced.

It should be further noted that, in this embodiment, a decoration cover 211 is further disposed at the first air inlet 21, a honeycomb-shaped vent hole is disposed on the decoration cover 211 to facilitate air inlet, and an air filter 1154 is further installed on the inner side of the decoration cover 211 to further filter air entering the interior of the grass mower, so as to reduce dust entering the interior of the grass mower, in this embodiment, the air filter 1154 is, for example, a dust sponge. In addition, the decoration cover 211 has two bosses 2111 for inserting into the two grooves 104 on the front side of the housing 20 during assembly, so that the decoration cover 211 effectively presses the air filter 1154, the air entering from the first air inlet 21 passes through the air filter 1154 first to realize purification treatment of the air filter 1154, and dust is filtered by the air filter 1154, thereby preventing a large amount of dust from entering the grass mower 100.

In addition, a second air inlet 1173 is further arranged at the tail part of the grass mower, a plurality of baffles 1103 are arranged on one side of the motor mounting hole 1101 close to the tail plate 12, the baffles 1103 and the plate 1104 arranged on the outer circle of the motor mounting hole 1101 are fixedly connected to form an electric element mounting position for mounting electric elements, and a plurality of openings 1105 are arranged on the baffles 1103 so as to facilitate air inlet from the second air inlet 1173 at the rear end of the grass mower 100, so that the heat dissipation of the motor 50 and the electric elements is realized.

Specifically, as shown in fig. 1, 25 and 26, a tail cover mounting seat 117 is installed between the push rod mounting seats 114 at the tail of the grass mower 100, a tail cover 118 is installed on the tail cover mounting seat 117, and the tail cover 118 is used for covering the grass collecting frame 1001. Specifically, the tail cover 118 is connected with the tail cover mounting base 117 through a rotating shaft 1171, a spring member 1172 is sleeved on the rotating shaft 1171, when the tail cover 118 needs to be uncovered, the tail cover 118 rotates around the rotating shaft 1171, the spring member 1172 is compressed, and after the tail cover 118 is loosened, under the elastic force of the spring member 1172, the tail cover 118 resets and is pressed to cover the grass collecting frame 1001 under the elastic force.

As shown in fig. 1, 25 and 26, in particular, the second air inlet 1173 is disposed at the rotating shaft 1171, so as to facilitate air inlet of the grass mower 100 from the rear end, and in this embodiment, a vent 1161 is disposed at a top end of a side of the motor housing 116 away from the battery pack accommodating cavity 115, so that the air entering from the second air inlet 1173 enters the motor housing 116 from the vent 1161, so as to dissipate heat of the motor 50 and the electrical components.

As shown in fig. 19 to 25, it should be noted that the air entering the interior of the lawnmower from the second air inlet 1173 is accompanied by dust, and therefore, an air filter (not shown) is installed inside the ventilation opening 1161 to filter the air entering the interior of the lawnmower from the second air inlet 1173, so as to remove dust and prevent excessive dust from entering the interior of the lawnmower 100.

In this embodiment, the electrical components are located within the motor housing 116 and proximate to the vent 1161, and after entering the second inlet 1173, the wind passes through the vent 1161, through the electrical components, and through the interior of the motor 50. In the operation process of the machine, the motor 50 and the electric element can generate heat, and the wind at the rear end can enter the motor through the electric element after entering, so that the heat generated when the electric element and the motor 50 work is taken away in the process, and the phenomenon that the electric element and the motor 50 stop working due to overhigh temperature is avoided. Additionally, in some embodiments, a flange 1174 extends from the tailgate mount 117 toward the second intake 1173 to partially block the second intake 1173.

As shown in fig. 1 and 27 to 30, in the present embodiment, the lawn mower 100 includes a height adjusting structure 70, which adjusts different grass mowing heights by using a gear adjustment, and the height adjusting device 70 has a plurality of different gears, each corresponding to a different grass mowing height, so as to adjust the grass mowing height as required during an actual grass mowing process. In this embodiment, the height adjustment mechanism 70 includes a front wheel axle 111, a rear wheel axle 113, a shift position plate 71, a limiting rod 72 and a connecting rod 73, specifically, the front wheel 102 and the front wheel axle 111, and the rear wheel 103 and the rear wheel axle 113 are rotatably connected, the rear wheel axle 113 is connected to the tail plate 12 through a first pressing plate 1002, and the front wheel axle 111 is connected to the front end of the base plate 11.

As shown in fig. 13 and 31, in the present embodiment, the front axle 111 and the rear axle 113 have the same structure, and the rear axle 113 is taken as an example for illustration, the rear axle 113 includes a main body portion 1131 and axle portions 1132 symmetrically disposed at two ends of the main body portion 1131, in the present embodiment, the axle portions 1132 are L-shaped, one end of the axle portions 1132 is fixedly connected to the main body portion 1131, and the other end is rotatably connected to the rear wheel 103, since the front axle 111 and the rear axle 113 are respectively connected to the base plate 11 and the tail plate 12, that is, connected to the chassis 10 of the grass pusher 100, as the main body portion 1131 rotates to different positions, the chassis 10 is correspondingly raised or lowered to adjust the height of the grass pusher 100.

As shown in fig. 31 and 32, in the present embodiment, the shift plate 71 includes a connecting portion 711 and a shift portion 712, the shift portion 712 and the connecting portion 711 are formed integrally, for example, the connecting portion 711 is fixedly connected to one end of the rear wheel axle 113, a plurality of shift notches 713 are disposed on a side of the shift portion 712 away from the connecting portion 711, the plurality of shift notches 713 are communicated with each other through a sliding rail 714, the shift portion 712 is, for example, a fan-shaped structure, the plurality of shift notches 713 and the sliding rail 714 are disposed along a circumferential direction of the fan-shaped structure, the limiting rod 72 is matched with the shift notches 713 and can be switched through the sliding rail 714, one end of the limiting rod 72 is connected to the tail plate 12 through the second pressing plate 1003, the other end of the limiting rod passes through the sliding rail and is connected to an adjusting component 74, and the limiting rod 72 is located in different shift notches 713, corresponding to different gears and heights. One end of the connecting rod 73 is rotatably connected to the gear plate 71 through a first pin 731, and the other end is rotatably connected to a connecting plate 1112 on the front wheel axle 111 through a second pin 732, and the connecting plate 1112 and the gear plate 71 are located on the same side of the lawn mower 100.

As shown in fig. 31 to 33, in the present embodiment, the adjusting assembly 74 includes an adjusting button 741, an adjusting rod 742 and a return spring 743, the adjusting button 741 is mounted on the tail cover mounting seat 117, the adjusting button 741 includes an adjusting connecting rod 7411 and a button 7412, one end of the adjusting connecting rod 7411 is rotatably connected to the tail cover mounting seat 117, the other end of the adjusting connecting rod 7411 is connected to the adjusting rod 742, the button 7412 is located at an end of the adjusting connecting rod 7411 close to the end connected to the adjusting rod 742 and protrudes from the tail cover mounting seat 117, so as to facilitate the operation of an operator, and a lever structure is formed among the adjusting connecting rod 7411, the button 7412 and the tail cover mounting seat 117, so that the operation is labor-saving. The return spring 743 is sleeved on the adjusting rod 742, one end of the return spring 743 abuts against a platform structure 7421 on the adjusting rod 742, and the other end of the return spring 743 abuts against the tail plate 12, so that the pressed adjusting button 741 returns to the original position under the action of the return spring 743.

As shown in fig. 34 and 35, in this embodiment, the height adjustment mechanism further includes a reset member, in an embodiment of the present invention, the reset member is a tension spring 75, the tension spring 75 is located on one side of the gear plate 71, one end of the tension spring 75 is connected to the tail plate 12, and the other end of the tension spring is fixedly connected to a tension spring hook 715 on the gear plate 71, so that when the height adjustment mechanism lowers the height, the tension spring acts as a buffer, and when the height is raised, the tension spring 75 acts to rotate the gear plate 71 to realize gear shifting.

As shown in fig. 29 and fig. 31 to fig. 36, in the present embodiment, a notch 122 is disposed at a position of the tail plate 12 close to the shift plate 71, the shift plate 71 is partially located in the notch 122, and when the shift plate 71 rotates, the notch 122 limits the shift plate 71 to avoid excessive rotation. In addition, the link 73 is further provided with a mounting groove 733 for mounting the shift indicator 75, the shift indicator 75 is, for example, a fan-shaped structure, the surface of the shift indicator 75 is an arc surface 751, and the arc surface 751 is provided with a shift indicator, for example, 1, 2, 3 … or i, ii, iii …, or the like.

As shown in fig. 6, 29, 31 to 37, a first pin 752 and a second pin 753 are respectively fixed to two sides of the gear indicator 75, the first pin 752 is connected to the mounting groove 733, the second pin 753 is connected to a semicircular groove 754 on the base plate 11 through a pressing plate, when the gear is adjusted, the front axle 111 and the rear axle 113 rotate to drive the connecting rod to rotate, the connecting rod 73 drives the gear indicator 75 to rotate, and the gear indicator on the gear indicator 75 rotates to a specific indicator, so that the grass pusher 100 is identified to be in a certain gear.

As shown in fig. 38, in addition, be provided with a sign hole 23 on the housing 20, sign hole 23 is located gear sign 75 top to be convenient for operating personnel follows gear sign 75 is observed to sign hole 23 department, makes it when adjusting the gear, can carry out the gear to gear sign 75 and adjust, need certain mowing height just to transfer corresponding gear can, the use is very convenient, and works as adjusting part adjusts the cutting height back of grass pusher, can show the cutting height in the sign hole 23.

As shown in fig. 27 to 38, specifically, the height of the front wheel axle 111 and the rear wheel axle 113 is lowered by pressing the adjusting button 741, so that the adjusting rod 741 descends to drive the limiting rod 72, so that the limiting rod 72 is separated from a certain gear groove 713 and enters the slide way 714, at this time, the front wheel axle 111 and the rear wheel axle 113 lose the limiting function, the operator presses the lawn mower downwards to rotate the gear plate 71, so that the front wheel axle 111 and the rear wheel axle 113 are driven to lower the height of the chassis 10, the limiting rod 72 slides in the slide way 714 during rotation, and the tension spring 75 is elongated to play a buffering function, when the specific gear is rotated to a required gear, the adjusting button 741 is released, and the adjusting rod 742 is reset under the action of the reset spring 743, so that the limiting rod 72 is driven to enter another gear groove 713 and limit is realized, so that the front and

rear wheel shafts

111 and 113 are locked, enabling height adjustment. The gear adjustment process includes that the adjustment button 741 is pressed to lower the adjustment rod 742 to drive the limiting rod 72, so that the limiting rod 72 is separated from a certain gear groove 713 and enters the slide 714, at this time, the front axle 111 and the rear axle 113 lose the limiting function, the gear plate 71 is driven to rotate under the elastic force of the elongated tension spring 75, so that the front axle 111 and the rear axle 113 are driven to increase the height of the chassis 10, when the adjustment button 741 is rotated to a required specific gear, the adjustment rod 742 is reset under the action of the reset spring 743, so that the limiting rod 72 is driven to enter another gear groove 713, the limiting is achieved, the front axle 111 and the rear axle 113 are locked, and the height adjustment is achieved.

As shown in fig. 38, in the present embodiment, a through hole 24 is formed in the housing 20 to expose a cavity of the battery pack accommodating cavity 115, the cavity is provided with a battery pack, so as to facilitate replacement of the battery pack, a flip cover mounting portion is formed on the housing 20, a flip cover structure 80 is mounted on the flip cover mounting portion, and the flip cover structure 80 is used for covering the through hole 24 to seal the cavity of the battery pack accommodating cavity 115, so as to protect the battery pack in the cavity.

As shown in fig. 38 to 42, in the present embodiment, the flip structure 80 includes a flip fixing seat 81 and a flip 82, a plurality of fasteners 811 are disposed on one side of the inner side of the flip fixing seat 81 so as to match with the slots 812 of the flip mounting part, so as to mount the flip fixing seat 81 on the housing 20, and then bolts pass through the through holes 813 on the other side of the flip fixing seat 81 to fixedly connect the flip fixing seat 81 with the housing 20, after the bolts are used for fixing, the front end portion of the flip fixing seat 81 just presses the decoration cover 211, so that the decoration cover 211 is completely fixed.

The flip fixing seat 81 is provided with a swing arm mounting groove 814 on one side of the through hole 813 for connecting the flip 82, a swing arm structure 821 is installed on one side of the flip 82, the swing arm structure 821 includes a swing arm 8211 and a rotating shaft 8212, one end of the swing arm 8211 and the inner side of the flip 82 are fixedly connected, the other end of the swing arm 8211 and the rotating shaft 8212 are fixedly connected, the rotating shaft 8212 of the swing arm structure 821 is installed in the swing arm mounting groove 814 and is rotatably connected with each other, namely, the flip 82 can rotate around the rotating shaft 8212.

Specifically, the installation process of the flip structure 80 includes firstly installing the swing arm structure 821 on the flip 82 in the swing arm installation groove 814 to realize the installation between the flip 82 and the flip fixing seat 81, then inserting the buckle 811 in the flip fixing seat 81 into the slot 812 on the housing 20, aligning the through hole 813 on the flip fixing seat 81 to the threaded hole 815 on the housing 20, and fixing the through hole with a bolt.

It should be noted that, in the present embodiment, a plurality of rib structures 83 are disposed on the inner side of the flip cover 82 to enhance the strength of the flip cover structure 80.

According to the grass pushing machine provided by the utility model, the limiting plates are provided with the limiting structures, the push rods are arranged on the limiting plates, and the matching between the push rods and the limiting structures is controlled through the cross rods, so that the push rod assemblies can be fixed at different positions, the push rod assemblies can be fixed at required positions through one hand, and an operator can pull the cross rods at any position beside the grass pushing machine, so that the operation is very convenient.

According to the grass mower provided by the utility model, different air inlets are formed so as to realize the heat dissipation effect on the driving assembly and the electric element in the grass mower, the electric element and the driving assembly are prevented from stopping working due to overhigh temperature, the air filter is arranged at the air inlet, the air inlet channel is provided with at least one bent part, and a plurality of inclined plane structures are arranged at intervals in the circumferential direction of the motor mounting hole so as to play a dustproof role, so that dust is prevented from entering the motor.

The utility model provides a height adjusting mechanism, which adjusts the height of a chassis by switching gears, so that the height adjusting mechanism is suitable for different lawn types, can adjust the height of the chassis according to the required cutting height, can avoid being wound by weeds and the like, is safer and more obvious in height adjustment and convenient to operate, and can effectively check the gears of a grass pusher indicated by a gear indicator in time through a mark hole arranged above a housing so as to adjust.

According to the grass mower provided by the utility model, the flip cover structure on the grass mower is fixed on the housing through the flip cover fixing seat, and the grass mower is simple in structure, reliable in fixing and simple and convenient in installation process.

The above description is only a preferred embodiment of the present application and the explanation of the technical principle used, and it should be understood by those skilled in the art that the scope of the present application is not limited to the technical solution of the specific combination of the above technical features, and also covers other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept, for example, the technical solutions formed by mutually replacing the above technical features (but not limited to) having similar functions disclosed in the present application.

Other technical features than those described in the specification are known to those skilled in the art, and are not described herein in detail in order to highlight the innovative features of the present invention.

Claims

1. A rear block for a lawnmower, mounted at a grass-collecting channel at the bottom of the lawnmower, comprising:

the baffle is matched with the grass collecting channel;

2. The back blockout of claim 1, wherein the baffle includes a first baffle and a second baffle, the first baffle is an arced baffle, and the radian of the arced baffle matches the radian of the side wall of the cutter receiving cavity at the bottom of the lawnmower.

3. The back blockout of claim 2, wherein the second flap is curved to a side away from the first flap.

4. The back blockout of claim 2, wherein the surface of the second baffle is an arc surface and a plurality of reinforcing ribs are provided on the bottom surface of the second baffle.

5. The posterior patch according to claim 2, wherein the first baffle, the second baffle and the fixation plate are integrally formed.

6. The back blockout of claim 1, wherein the securing member includes a head structure and a tail structure, the head structure being a ball structure or an oval structure and the tail structure being a self-tapping screw for fixedly attaching to the lawnmower.

7. The back blockout of claim 1, wherein a plurality of protrusions are disposed on the bottom of the fixing plate, and the plurality of protrusions are located around the limiting hole.

8. A lawnmower, comprising:

a drive assembly mounted on the chassis;

the baffle is matched with the grass collecting channel;

9. The lawnmower of claim 8, wherein the bottom of the cutter receiving cavity is provided at a central location with an annular boss, the annular boss and the side wall of the cutter receiving cavity forming a first grass-collecting channel therebetween.

10. The lawnmower of claim 9, wherein the baffle mates with the first grass-collecting channel.

11. The lawnmower of claim 10, wherein the base plate and the tail plate are fixedly connected and form a second grass-collecting channel, and wherein the first grass-collecting channel has a gradually increasing depth along its circumferential direction and is connected with the second grass-collecting channel at its deepest depth.

12. The lawnmower of claim 11, wherein the rear block is mounted at the junction of the grass-collecting channel and the cutter receiving cavity to separate the second grass-collecting channel from the cutter receiving cavity such that the cutter receiving cavity forms a complete chamber.