A grass mover

Abstract

The present application provides a kind of grass pushing machine, including chassis;Motor, the motor is installed on the chassis, the output shaft of the motor is installed with impeller;Battery package accommodating cavity, installed on the chassis;Motor cover, fixedly arranged in the side of the battery package accommodating cavity, and cover is set on the motor;Cover, cover is set on the chassis, the battery package accommodating cavity is formed with a air inlet passage between the chassis, and first air inlet is arranged on the cover, the air inlet passage is communicated with the first air inlet and the motor cover, and at least one bending portion is arranged in the air inlet passage, cooling air enters the air inlet passage from first air inlet, flows through motor cover, and is discharged from the bottom of the motor.The present application realizes the heat dissipation effect of motor and electrical elements in the grass pushing machine, avoids that electrical elements and motor stop working due to temperature is too high.

Description

Technical Field

[0001] This invention belongs to the field of garden tool technology, and specifically relates to a grass pusher. Background Technology

[0002] Currently, lawn mowers are being used more and more in the market, and users have increasingly higher requirements for lawn mowers in actual use, such as the effectiveness of mowing and collecting grass, as well as the ease of use and safety.

[0003] Wheeled tools such as lawnmowers are commonly used household tools. These types of garden tools often have a push rod on their main body for ease of operation. When using or storing these tools, the fixed angle of the push rod needs to be adjusted to suit different needs. However, existing push rod adjustment mechanisms are usually located at the pivot point between the push rod and the main body; when operating, the operator needs to bend over to loosen the lower part of the push rod. Therefore, this easily leads to inconvenience and fatigue for the operator. Alternatively, the angle between the push rod assembly and the lawnmower body is relatively fixed, which makes it difficult to meet the needs of different users when using these lawnmowers for mowing, resulting in significant operational inconvenience. Furthermore, garden tools usually have transparent flip-top covers on their battery packs for easy insertion and removal. Traditional transparent flip-top covers are complex to install and not very secure.

[0004] Hay pushers typically have two modes: shredding and storage. In storage mode, the cut grass blades pass through the cutting chamber and enter the storage bag. In shredding mode, a rear stopper is required to ensure the cutting chamber is a complete chamber. On existing hay pushers, the rear stopper is inconvenient to install and remove, and it is prone to loosening under impact.

[0005] Furthermore, the electric motor and electrical components generate heat during the operation of an electric lawnmower. If this heat is not dissipated to the surrounding environment, it can adversely affect the electric motor and / or electrical components.

[0006] Furthermore, due to differences in lawn type, weed type and height, and varying operator requirements for lawn height, most lawn mowers on the market today are equipped with height adjustment mechanisms to meet the different mowing height needs of various operators. Currently, lawn mower height adjustment is generally achieved by rotating an adjustment lever located on the rear wheel side. However, this method can be problematic when cutting tall lawns; if the adjustment lever gets tangled in grass, changes in the adjustment level may result in inconsistent cutting heights. Summary of the Invention

[0007] This invention proposes a grass trimmer to address the problem that during the operation of an electric grass trimmer, the electric motor and electrical components generate heat, and existing grass trimmers cannot transfer the generated heat to the surrounding environment in a timely manner, causing the generated heat to have an adverse effect on the electric motor and / or electrical components.

[0008] This invention proposes a grass pusher, comprising:

[0009] Chassis;

[0010] An electric motor is mounted on the chassis, and an impeller is mounted on the output shaft of the motor.

[0011] A battery pack receiving cavity is mounted on the chassis;

[0012] A motor housing is fixedly installed on one side of the battery pack receiving cavity and covers the motor.

[0013] A cover, which is installed on the chassis,

[0014] An air intake channel is formed between the battery pack cavity and the chassis, and a first air inlet is provided on the cover. The air intake channel connects the first air inlet and the motor cover, and at least one bend is provided in the air intake channel. Cooling air enters the air intake channel from the first air inlet, flows through the motor cover, and is discharged from the bottom of the motor.

[0015] In one embodiment of the present invention, the air inlet channel is configured such that when the impeller is driven to rotate by the motor, cooling air enters the air inlet channel from the first air inlet on the housing and enters the motor housing from the bottom of the motor housing.

[0016] In one embodiment of the present invention, cooling air enters the motor housing from the bottom, flows upward to the top of the motor, and then flows downward from the inside of the motor.

[0017] In one embodiment of the present invention, a motor mounting hole is provided on the chassis, and the motor is mounted at the motor mounting hole.

[0018] In one embodiment of the present invention, a plurality of inclined structures are provided at intervals along the circumference of the motor mounting hole, so that when dust enters the interior of the grass pusher, it is discharged through the inclined structures.

[0019] In one embodiment of the present invention, a decorative cover is provided on the outer side of the first air inlet.

[0020] In one embodiment of the present invention, the decorative cover is provided with honeycomb-shaped ventilation holes.

[0021] In one embodiment of the invention, an air filter is also installed on the inner side of the decorative cover.

[0022] In one embodiment of the present invention, a vent is provided on the top of the side of the motor housing away from the battery pack receiving cavity.

[0023] In one embodiment of the present invention, an electrical component is also installed inside the motor housing, and the electrical component is located inside the motor housing and close to the ventilation opening.

[0024] In one embodiment of the invention, an air filter is installed inside the vent.

[0025] In one embodiment of the present invention, a second air inlet is provided at the tail of the grass pusher.

[0026] The present invention proposes a grass trimmer that achieves heat dissipation for the motor and electrical components inside the grass trimmer by setting different air inlets, thereby preventing the electrical components and motor from stopping work due to excessive temperature. In addition, it also plays a role in dust prevention by setting air filters at the air inlets, setting at least one bend in the air inlet channel, and setting multiple inclined structures at intervals around the motor mounting holes to prevent dust from entering the motor. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of a grass pusher proposed in this invention.

[0029] Figure 2 This is a schematic diagram of the assembly of the present invention with a grass collection frame in one embodiment.

[0030] Figure 3 This is a schematic diagram of the assembly of the drive component and the chassis in one embodiment of the present invention.

[0031] Figure 4 This is a schematic diagram of the chassis structure in one embodiment of the present invention.

[0032] Figure 5 This is a schematic diagram of the push rod assembly in one embodiment of the present invention.

[0033] Figure 6 This is a schematic diagram of the limiting component in the push rod assembly according to one embodiment of the present invention.

[0034] Figure 7 This is a schematic diagram of the assembly of the crossbar and the crossbar mounting plate in a push rod assembly according to one embodiment of the present invention.

[0035] Figure 8 This is a schematic diagram of the limiting plate in a push rod assembly according to one embodiment of the present invention.

[0036] Figure 9 This is a partial structural diagram of the push rod in a push rod assembly according to one embodiment of the present invention.

[0037] Figure 10 This is a schematic diagram of the push rod assembly in a second position according to one embodiment of the present invention.

[0038] Figure 11 This is a schematic diagram of the push rod assembly in a third position according to one embodiment of the present invention.

[0039] Figure 12 This is a schematic diagram of the bottom structure of the grass pusher in one embodiment of the present invention.

[0040] Figure 13 This is a schematic diagram of the structure of the plug assembled at the bottom of the grass pusher in one embodiment of the present invention.

[0041] Figure 14 This is a schematic diagram of the structure of the rear plug in one embodiment of the present invention.

[0042] Figure 15 This is a top view of the rear plug structure in one embodiment of the present invention.

[0043] Figure 16 This is a schematic diagram of the rear plug structure from another angle in one embodiment of the present invention.

[0044] Figure 17 This is a schematic diagram of the fastener structure in one embodiment of the present invention.

[0045] Figure 18 for Figure 4 Enlarged diagram of point C in the middle.

[0046] Figure 19 This is a schematic diagram of the assembly of the chassis and the battery pack receiving cavity in one embodiment of the present invention.

[0047] Figure 20 This is a schematic diagram of the structure of the battery pack receiving cavity in one embodiment of the present invention.

[0048] Figure 21 for Figure 19 The main view.

[0049] Figure 22 for Figure 21 A cross-sectional view along the middle HH.

[0050] Figure 23 This is a partial explosion diagram of a grass pusher according to one embodiment of the present invention.

[0051] Figure 24 This is a schematic diagram of the assembly of the drive component and the tool component in one embodiment of the present invention.

[0052] Figure 25 This is a schematic diagram of the grass pusher from another angle in one embodiment of the present invention.

[0053] Figure 26 for Figure 25 Enlarged schematic diagram at point F in the middle.

[0054] Figure 27 This is a schematic diagram of the height adjustment mechanism in one embodiment of the present invention.

[0055] Figure 28 for Figure 27 The main view.

[0056] Figure 29 This is a schematic diagram of the assembly of the tail plate and the height adjustment mechanism in one embodiment of the present invention.

[0057] Figure 30 for Figure 29 The bottom view in the image.

[0058] Figure 31 This is a partial structural schematic diagram of the height adjustment mechanism in one embodiment of the present invention.

[0059] Figure 32 This is a schematic diagram of the gear plate in the height adjustment mechanism of one embodiment of the present invention.

[0060] Figure 33 This is a schematic diagram of another angle structure of the height adjustment mechanism in one embodiment of the present invention.

[0061] Figure 34 for Figure 29 Top view.

[0062] Figure 35 for Figure 34 A sectional view along the middle DD.

[0063] Figure 36 This is a schematic diagram of the gear indicator in the height adjustment mechanism of one embodiment of the present invention.

[0064] Figure 37 This is a schematic diagram of the assembly of the gear position indicator and the base plate in one embodiment of the present invention.

[0065] Figure 38 This is a schematic diagram of the structure of the cover in one embodiment of the present invention.

[0066] Figure 39 This is a schematic diagram of the assembly of the cover and the flip structure in one embodiment of the present invention.

[0067] Figure 40 This is a schematic diagram of the flip-top structure in one embodiment of the present invention.

[0068] Figure 41 This is a schematic diagram of the inner structure of the flip cover structure in one embodiment of the present invention.

[0069] Figure 42 This is a schematic diagram of the flip cover fixing seat in one embodiment of the present invention.

[0070] Label Explanation:

[0071] Push rod assembly 30; cutter assembly 40; drive assembly 50; cutter receiving cavity 101; front wheel 102; rear wheel 103; base plate 11; tail plate 12; first groove 110; front wheel axle 111; second groove 112; rear wheel axle 113; push rod mounting seat 114; limiting plate 31; crossbar 33; limiting assembly 34; first push rod 301; second push rod 302; U-shaped upper push rod 303; switch box 304; notch 322; crossbar mounting plate 331; first mounting plate 3311; second mounting plate 3312; through hole 3313; barb structure 3314; first limiting structure 311; second limiting structure 312; third limiting structure 313; grass collection frame 1001; support Support plate 314; First limiting hole 3111; Second limiting hole 3131; Spring pin 341; Connecting piece 342; Spring 343; Column pin 344; Steel wire rope 345; Oblong through hole 3421; Gasket 3411; Annular boss 1011; First grass collection channel 1012; Second grass collection channel 1013; Rear plug 60; Connection 121; Blade 41; Gap through hole 501; Impeller 502; Blade 503; First baffle 61; Second baffle 62; Fixing plate 63; Reinforcing rib 622; Limiting hole 631; Hole wall 632; Fixing piece 64; Head structure 641; Tail structure 642; Protrusion 633; ​​Motor mounting hole 1101; Inclined surface structure 1102; Baffle Plate 1103; Plate 1104; Opening 1105; Battery pack housing 115; Motor housing 116; Cavity wall 1151; Reinforcing rib 1106; Air inlet channel 1152; Bending part 1153; First air inlet 21; Decorative cover 211; Air filter 1154; Boss 7111; Groove 104; Tail cover mounting base 117; Tail cover 118; Rotating shaft 1171; Spring 1172; Second air inlet 1173; Ventilation vent 1161; Protruding plate 1174; Height adjustment structure 70; Gear plate 71; Limiting rod 72; Connecting rod 73; Pressure plate 1002; Main body 1131; Wheel axle 1132; Connecting part 711; Gear part 712; Gear groove 713; Slide rail 714; Adjustment mechanism 74; First pin 731; Second pin 732; Connecting plate 1112; Adjustment button 741; Adjustment rod 742; Return spring 743; Adjustment connecting rod 7411; Button 7412; Platform structure 7421; Notch 121; Mounting slot 733; Gear indicator 75; Arc surface 751; First pin 752; Second pin 753; Semicircular groove 754; Marking hole 23; Through hole 24; Flip cover structure 80; Flip cover fixing seat 81; Flip cover 82; Reinforcing rib structure 83; Buckle structure 811; Slot structure 812; Through hole 813; Swing arm mounting slot 814; Threaded hole 815; Swing arm structure 821; Rotating shaft 822. Detailed Implementation

[0072] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0073] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0074] To solve the above problems, such as Figures 1 to 41 As shown, the present invention proposes a garden tool, taking a lawnmower 100 as an example, including a chassis 10, a cover 20, a push rod assembly 30, a working assembly, and a drive assembly 50. The drive assembly 50 is mounted on the chassis 10. The working assembly can be a blade assembly 40, which is located in a blade receiving cavity 101 at the bottom of the chassis 10 and is fixedly connected to the output shaft of the drive assembly 50. The cover 20 covers the chassis 10 and encloses the drive assembly 50. Front wheels 102 and rear wheels 103 are respectively installed on the bottom sides of the chassis 10 to facilitate the movement of the lawnmower 100.

[0075] like Figures 1 to 4 As shown, in this embodiment, the chassis 10 includes a base plate 11 and a tail plate 12. The tail plate 12 is fixedly installed at the tail of the base plate 11, and a first groove 110 is provided on the side of the base plate 11 away from the tail plate 12 to accommodate the front wheel axle 111. Front wheels 102 are installed at both ends of the front wheel axle 111. A second groove 112 is also provided on the tail plate 12 to accommodate the rear wheel axle 113. Rear wheels 103 are installed at both ends of the rear wheel axle 113. The front wheels 102 and the front wheel axle 111, as well as the rear wheels 103 and the rear wheel axle 113, are rotatably connected. That is, the front wheels 102 and the rear wheels 103 rotate freely around the front wheel axle 111 and the rear wheel axle 113, respectively, so as to move the grass pusher 100. A grass collection frame 1001 is detachably installed at the tail plate 12 to store the cut grass.

[0076] like Figures 1 to 4As shown, in this embodiment, the push rod assembly 30 is installed on the side of the chassis 10 near the rear wheel 103. Specifically, push rod mounting seats 114 are provided on both sides of the top surface of the rear of the base plate 11. One end of the push rod assembly 30 is connected to the push rod mounting seat 114 so as to use the push rod assembly 30 to push the grass pusher 100 to move.

[0077] like Figure 1 , Figures 5 to 9 As shown, in this embodiment, the push rod assembly 30 includes a limiting plate 31, a push rod, a crossbar 33, and a limiting component 34. The limiting plate 31 is fixedly connected to the push rod mounting base 114. The push rod is rotatably connected to the limiting plate 31 via a rotating member 321. The rotating member 321 is rotatably connected to the limiting plate 31, meaning the push rod can rotate around the rotation center of the rotating member 321, thereby rotating the push rod to different positions. It is limited by the cooperation of the limiting component 34 and the limiting plate 31. The push rod has a hollow structure to accommodate the limiting component 34. The push rod includes a first push rod 301 and a second push rod 302. The crossbar 33 is installed between the first push rod 301 and the second push rod 302.

[0078] like Figure 1 , Figures 5 to 9 As shown, in this embodiment, the ends of the first push rod 301 and the second push rod 302 away from the chassis 10 are connected by a U-shaped upper push rod 303. A switch box 304 is fixed on the U-shaped upper push rod 303, and the main blade motor can be started by the dual action of the button and the switch handle on the switch box 304.

[0079] like Figure 1 , Figures 5 to 9As shown, 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, a notch 322 is provided on the end of the push rod away from the push rod mounting base 114. A crossbar mounting plate 331 is installed at the notch 322. The crossbar mounting plate 331 is adapted to the notch 322, and the crossbar mounting plate 331 includes a first mounting plate 3311 and a second mounting plate 3312. The first mounting plate 3311 and the second mounting plate 3312... Plates 3312 are respectively installed on both sides of the notch 322 to close the notch 322. In addition, a through hole 3313 is provided on the crossbar mounting plate 331 to facilitate the connection of the crossbar 33. The second mounting plate 3312 extends inward to form a plurality of barb structures 3314, and the plurality of barb structures 3314 are arranged circumferentially along the through hole 3313 to limit the crossbar 33 and prevent the crossbar 33 from wobbling between the first push rod 301 and the second push rod 302.

[0080] like Figure 1 , Figures 5 to 9 As shown, in this embodiment, the limiting plate 31 has multiple limiting structures distributed on it to cooperate with the limiting component 34, thereby fixing the push rod in different positions so that the lawn mower 100 is in different usage states or easy to store. Specifically, the limiting plate 31 extends 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. Figure 1 As shown, when the push rod assembly 30 is in the first position, and the limiting assembly 34 cooperates with the first limiting structure 311, the push rod is arranged obliquely upward along the X direction, and the grass pusher 100 is in working condition; Figure 10 As shown, when the push rod assembly 30 is in the second position, and the limiting assembly 34 cooperates with the second limiting structure 312, the push rod is arranged obliquely upward in the opposite direction of the X direction. At this time, the grass collection frame 1001 can be detached from the tail plate 12 and the crossbar 33 can be suspended. Furthermore, when the push rod is in the second position, because the push rod is arranged obliquely upward in the opposite direction of the X direction, the push rod is stabilized in the second position due to gravity and the support of the baffle when suspending the grass collection frame 1001. Figure 11As shown, when the push rod assembly 30 is in the third position, and the limiting assembly 34 cooperates with the third limiting structure 313, the push rod is arranged in the opposite direction of the X direction. At this time, the lawn mower 100 can be placed vertically, allowing the rear wheel 103 and support plate 314 of the lawn mower 100 to contact the ground for support, thus facilitating the storage of the lawn mower 100. It should be noted that the support plate 314 is fixedly connected to or integrally formed with the limiting plate 31.

[0081] like Figure 1 , Figures 6 to 11 As shown, in this embodiment, the first limiting mechanism 311 is provided with a first limiting hole 3111, and the third limiting mechanism 313 is also provided with a second limiting hole 3131. The push rod assembly 30 is fixed in the first or third position by the engagement of the spring pin 341 on the limiting component 34 with the first limiting hole 3111 or the second limiting hole 3131, thus placing the grass pusher 100 in a working or stored state. The second limiting mechanism 312 is a baffle, and the push rod assembly 30 is positioned in the second position by the engagement of the spring pin 341 with the baffle.

[0082] like Figure 1 , Figures 6 to 11As shown, in this embodiment, specifically, the limiting component 34 includes a spring pin 341, a connecting piece 342, a spring 343, a pin 344, and a steel wire rope 345. One end of the spring pin 341 is fixedly connected to the connecting piece 342. The connecting piece 342 is provided with an elongated oval through hole 3421. The pin 344 passes through the push rod and the rotating part 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 elongated oval through hole 3421, and the pin 344 passes through the elongated oval through hole 3421 to prevent the pulling of the connecting piece 342 from being affected when adjusting the angle of the push rod. The pin 344 is fixedly connected to the push rod. The spring 343 is sleeved on the spring pin 341 and located between the connecting piece 342 and the washer 3411 at the front end of the spring pin 341. One end of the wire rope 345 is connected to the connecting piece 342, and the other end is connected to the crossbar mounting plate 331. When the push rod needs to be rotated, the crossbar 33 is pulled, which causes the crossbar mounting plate 331 to move upward along its notch 322 on the push rod, so that the spring pin 341 retracts into the push rod, thereby disengaging from the first limiting structure 311, the second limiting structure 312, or the third limiting structure 313, allowing the push rod to rotate freely. When rotated to the desired position, the crossbar 33 is released, and the spring pin 341 automatically resets to cooperate with the first limiting structure 311, the second limiting structure 312, or the third limiting structure 313, thereby fixing the push rod assembly 30 at the first position, the second position, or the third position. In this embodiment, the push rod assembly 30 can be fixed to the desired position with one hand, and the operator can pull the crossbar 33 from the left, right, and rear of the grass pusher 100, making it very convenient to operate.

[0083] like Figure 1 and Figure 12 As shown, in this embodiment, an annular boss 1011 is provided at the middle position of the bottom of the tool receiving cavity 101. The output shaft of the drive assembly 50 is located at the middle position of the annular boss 1011 to facilitate the installation of the tool assembly 40. A first grass collecting channel 1012 is formed between the annular boss 1011 and the side wall of the tool receiving cavity 101, and a second grass collecting channel 1013 is formed between the tail plate 12 and the base plate 11. The depth of the first grass collecting channel 1012 gradually increases along its circumferential direction, and it is connected to the second grass collecting channel 1013 at its deepest point.

[0084] like Figure 1 , Figure 11 and Figure 12The grass pusher 100 has two working modes: grass storage mode and grass shredding mode. When the grass pusher 100 is in grass storage mode, the grass cut by the blade assembly 40 is discharged along the second grass collection channel 1013 into the grass collection frame 1001 installed at the tail of the grass pusher 100 to achieve grass storage. When the grass pusher 100 is in grass chopping mode, a rear stop block 60 needs to be installed. The bottom of the tail plate 12 is provided with a connection point 121 for connecting with the rear stop block 60, so that the rear stop block 60 is installed at the connection between the second grass collection channel 1013 and the blade receiving cavity 101, thereby separating the second grass collection channel 1013 and the blade receiving cavity 101 from each other, so that the blade receiving cavity 101 forms a complete chamber. The cut grass cannot enter the second grass collection channel 1013, so that the cut grass can only be continuously cut by the blades 41 in the blade assembly 40 in the blade receiving cavity 101 to achieve the purpose of grass chopping, and the chopped grass falls directly to the ground.

[0085] like Figure 1 , Figures 12 to 16 As shown, in this embodiment, the rear block 60 includes a first baffle 61, a second baffle 62, and a fixing plate 63. The first baffle 61 is an arc-shaped baffle, and the arc of the arc-shaped baffle matches the arc of the side wall of the tool receiving cavity 101 to facilitate the installation of the rear block 60. The second baffle 62 is fixedly connected to one side of the first baffle 61 along the arc direction of the first baffle 61, and the second baffle 62 matches the first grass collecting channel 1012. At the same time, the side of the second baffle 62 away from the first baffle 61 is bent towards the side away from the first baffle 61 to completely block the gap between the second baffle 62 and the first grass collecting channel 1012. The fixing plate 63 is fixed on the side of the first baffle 61 away from the second baffle 62 and is used to fixally connect with the tail plate 12 to separate the second grass collecting channel 1013 from the tool receiving cavity 101.

[0086] like Figure 1 , Figures 12 to 16 As shown, it should also be noted that the surface of the second baffle 62 is curved to prevent the cut grass from remaining on the second baffle 62 and causing blockage, thus affecting the grass shredding effect. It also helps to better seal the grass collection channel. Furthermore, multiple reinforcing ribs 622 are present on the bottom surface of the second baffle 62 to increase its strength and prevent deformation. It should be noted that in this embodiment, the first baffle 61, the second baffle 62, and the fixing plate 63 are integrally formed to enhance their structural strength.

[0087] like Figure 1 , Figures 12 to 17As shown, in this embodiment, the fixing plate 63 is provided with a plurality of limiting holes 631, and each limiting hole 631 is provided with at least two hole walls 632 with a certain elasticity. The at least two hole walls 632 are spaced apart from each other and arranged circumferentially along the limiting hole 631, and are located at the bottom of the fixing plate 63 for fixed connection with the tail plate 12. In this embodiment, the rear plug 60 is fixedly connected to the tail plate 12 by a fixing member 64, and the fixing member 64 cooperates with the limiting holes 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 plug 60 needs to be installed, first connect the fixing member 64 to the connection 121 of the tail plate 12, and then align the limiting hole 631 of the rear plug 60 with the head structure 641 of the fixing member 64. Since the hole wall 632 at the limiting hole 631 is elastic, by pressing the rear plug 60 downward with force, the head structure 641 of the fixing member 64 will be pressed into the limiting hole 631, so as to fix the rear plug 60 on the tail plate 12.

[0088] like Figure 1 , Figures 12 to 17 As shown, when it is necessary to remove the rear plug 60, grasp the rear plug 60 with both hands and pull it upwards forcefully. The limiting hole 631 of the rear plug 60 can then easily disengage from the head structure 641 of the fixing member 64. Furthermore, it should be noted that multiple protrusions 633 are provided on the bottom of the fixing plate 63, located around the limiting hole 631, to increase the strength around the limiting hole 631 of the rear plug 60, ensuring that the area around the limiting hole 631 will not be damaged when the rear plug 60 is pressed down and pulled upwards. This structure is simple and convenient to manufacture, and is robust and durable, without any jamming. After installation, it is accurately positioned to ensure that the rear plug 60 does not loosen under impact.

[0089] like Figure 4 and Figure 18 As shown, during operation, the motor, electrical components, and other parts of an electric lawnmower generate heat. When this temperature reaches a certain point, the machine will malfunction. Therefore, it is essential to ensure effective heat dissipation to prevent the motor and electrical components from overheating and malfunctioning. Similarly, as airflow enters the lawnmower and passes the motor, dust can accumulate inside or enter the motor, affecting its normal operation. Therefore, while ensuring heat dissipation, dust prevention is also crucial. Specifically… Figures 18 to 22As shown, a battery pack housing 115 is mounted on the chassis 10 for installing the battery pack. The battery pack provides power to the lawnmower 100 to drive the blade assembly 40 to rotate. A motor cover 116 is provided on the bottom of the battery pack housing 115 near the tail plate 12 to cover 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 housing 115 and the base plate 11 to ensure sufficient airflow into the lawnmower. At the same time, a motor mounting hole 1101 is provided on the base plate 11 for installing the motor 50. There is a curved structure between the gap between the bottom surface of the battery pack housing 115 and the base plate 11 and the plane where the motor mounting hole 1101 is located to prevent excessive dust from entering the motor 50 and affecting its normal operation.

[0090] In this embodiment, the motor 50 is installed at the motor mounting hole 1101, and an air inlet channel 1152 is formed between the battery pack receiving cavity 115 and the base plate 11. The air inlet channel 1152 leads to the motor housing 116 to facilitate air intake from the front end of the lawn mower 100 and into the motor housing 116 for heat dissipation of the motor 50 and the electrical components. In addition, the air entering from the front end of the lawn mower 100 must pass through at least one bend 1153 in the air inlet channel 1152 to prevent dust from entering the motor.

[0091] In this embodiment, as Figures 19 to 24 As shown, a cover 20 is provided on the chassis 10, and a first air inlet 21 is provided on the front side of the cover 20. The air entering the lawn mower 100 through the first air inlet 21 enters the air inlet channel 1152 from the air inlet and enters the motor cover 116 from the air outlet to dissipate heat from the motor 50 and the electrical components. Furthermore, the air passing through the air inlet channel 1152 passes through the cavity wall of the battery pack receiving cavity 115, thereby cooling the battery pack inside the battery pack receiving cavity 115 and preventing the battery pack from failing due to overheating.

[0092] Specifically, one end of the air inlet channel 1152 that communicates 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. Additionally, in this embodiment, the motor 50 housing is also provided with multiple clearance through holes 501, and an impeller 502 is provided at the bottom of the motor 50. The impeller 502 is fixedly connected to the output shaft of the motor 50, and multiple blades 503 are provided on the side of the impeller 502 closest to the motor 50. Furthermore, the impeller 502 is also used to mount the tool assembly 40.

[0093] When the motor 50 drives the blade assembly 40 to rotate, the impeller 502 also rotates along with the blade assembly 40. The rotation of the impeller 502 drives the airflow, so that external air enters the lawnmower from the first air inlet 21 on the front side of the lawnmower, and enters the motor housing 116 through the air inlet channel 1152. Since the end of the air inlet channel 1152 that communicates with the inside of the motor housing 116 is close to the bottom of the motor 50, the incoming air will move upward along the bottom of the motor 50 on the outside of the motor housing, and then be discharged from the top of the motor 50 and through the gap through hole 501 on the motor 50 to the outside of the lawnmower, so as to maximize the heat dissipation effect of the motor 50.

[0094] It should also be noted that when the impeller 502 rotates, it drives the airflow. As the flowing air enters the interior of the grass pusher to dissipate heat from the motor 50, dust often enters the grass pusher along with the flowing air, and then further enters the motor 50, thus affecting the normal operation of the motor. Therefore, in this embodiment, at least one bend 1153 is provided in the air inlet channel 1152. The air entering from the front end of the grass pusher 100 must pass through at least one bend 1153 in the air inlet channel 1152 in order to prevent dust from entering the motor.

[0095] Meanwhile, in this embodiment, multiple inclined structures 1102 are also arranged circumferentially along the motor mounting hole 1101. When dust enters the interior of the grass pusher 100 with the flowing air, it can be discharged in time through the inclined structures 1102, preventing dust from accumulating inside the grass pusher 100 or entering the interior of the motor 50, thereby affecting the normal operation of the motor.

[0096] It should also be noted that, in this embodiment, a decorative cover 211 is provided at the first air inlet 21. The decorative cover 211 has honeycomb-shaped ventilation holes to facilitate air intake, and an air filter 1154 is installed on the inner side of the decorative cover 211 to further filter the air entering the mower, thereby reducing dust entering the mower. In this embodiment, the air filter 1154 is, for example, a dustproof sponge. In addition, the decorative cover 211 has two protrusions 2111, which are used to insert into the two grooves 104 on the front side of the cover 20 during assembly, so that the decorative cover 211 effectively presses down the air filter 1154. The air entering from the first air inlet 21 will first pass through the air filter 1154 to achieve purification treatment. Dust will be filtered out by the air filter 1154, preventing a large amount of dust from entering the mower 100.

[0097] In addition, a second air inlet 1173 is provided at the tail of the grass pusher. Multiple baffles 1103 are provided on the side of the motor mounting hole 1101 near the tail plate 12. The multiple baffles 1103 are fixedly connected to the plate 1104 that is provided around the outer side of the motor mounting hole 1101 to form an electrical component mounting point for installing electrical components. Multiple openings 1105 are provided on the baffles 1103 to allow air to enter from the second air inlet 1173 at the rear of the grass pusher 100, thereby dissipating heat from the motor 50 and the electrical components.

[0098] Specifically, such as Figure 1 , Figure 25 and 26 As shown, a tail cover mounting seat 117 is installed between the push rod mounting seat 114 at the tail of the grass pusher 100. A tail cover 118 is installed on the tail cover mounting seat 117, and the tail cover 118 is used to cover the grass collection frame 1001. Specifically, the tail cover 118 and the tail cover mounting seat 117 are connected by a rotating shaft 1171, and a spring 1172 is sleeved on the rotating shaft 1171. When it is necessary to open the tail cover 118, the tail cover 118 rotates around the rotating shaft 1171, and the spring 1172 is compressed. When the tail cover 118 is released, under the elastic force of the spring 1172, the tail cover 118 returns to its original position and presses tightly against the grass collection frame 1001 under the elastic force.

[0099] like Figure 1 , Figure 25 and 26 As shown, specifically, the second air inlet 1173 is located at the rotating shaft 1171 to allow the grass pusher 100 to take in air from the rear end. In this embodiment, a vent 1161 is provided on the top of the side of the motor housing 116 away from the battery pack cavity 115 so that the air entering from the second air inlet 1173 can enter the motor housing 116 through the vent 1161 to achieve heat dissipation for the motor 50 and electrical components.

[0100] like Figures 19 to 25 As shown, it should also be noted that the air entering the grass trimmer through the second air inlet 1173 is also accompanied by dust. Therefore, an air filter (not shown) is installed inside the vent 1161 to filter the air entering the grass trimmer through the second air inlet 1173, thereby achieving the effect of dust removal and preventing excessive dust from entering the grass trimmer 100.

[0101] In this embodiment, the electrical components are located inside the motor housing 116 and close to the ventilation opening 1161. Air enters through the second air inlet 1173, passes through the ventilation opening 1161, through the electrical components, and then through the interior of the motor 50. During machine operation, the motor 50 and electrical components generate heat. Since the air entering from the rear end passes through the electrical components before entering the motor, it carries away the heat generated by the electrical components and motor 50 during operation, preventing them from stopping due to overheating. Additionally, in some embodiments, a protruding plate 1174 extends from the tail cover mounting base 117 towards the second air inlet 1173 to partially block the second air inlet 1173.

[0102] like Figure 1 , Figures 27 to 30 As shown, in this embodiment, the lawn mower 100 includes a height adjustment structure 70, which adjusts the mowing height to achieve different levels. The height adjustment device 70 has multiple different levels, each corresponding to a different mowing height, so that the mowing height can be adjusted as needed during actual mowing. In this embodiment, the height adjustment mechanism 70 includes a front wheel axle 111, a rear wheel axle 113, a gear plate 71, a limiting rod 72, and a connecting rod 73. Specifically, the front wheel 102 and the front wheel axle 111, as well as 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 via a first pressure plate 1002, and the front wheel axle 111 is connected to the front end of the base plate 11.

[0103] like Figure 13 and Figure 31 As shown, in this embodiment, the front axle 111 and the rear axle 113 have the same structure. Taking the rear axle 113 as an example, the rear axle 113 includes a main body 1131 and wheel axle portions 1132 symmetrically arranged at both ends of the main body 1131. In this embodiment, the wheel axle portion 1132 is L-shaped. One end of the wheel axle portion 1132 is fixedly connected to the main body 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 lawn mower 100, as the main body 1131 rotates to different positions, the chassis 10 is raised or lowered accordingly to adjust the height of the lawn mower 100.

[0104] like Figure 31 and Figure 32As shown, in this embodiment, the gear plate 71 includes a connecting part 711 and a gear part 712. The gear part 712 and the connecting part 711 are, for example, integrally formed structures. The connecting part 711 is fixedly connected to one end of the rear wheel axle 113. A plurality of gear grooves 713 are provided on the side of the gear part 712 away from the connecting part 711. The plurality of gear grooves 713 are interconnected by slide rails 714. The gear part 712 is, for example, a fan-shaped structure, and the plurality of gear grooves 713 and the slide rails 714 are arranged along the circumferential direction of the fan-shaped structure. The limiting rod 72 matches the gear groove 713 and can be switched through the slide rails 714. One end of the limiting rod 72 is connected to the tail plate 12 through the second pressure plate 1003, and the other end passes through the slide rails 714 and is connected to an adjustment component 74. When the limiting rod 72 is located in different gear grooves 713, it corresponds to different gears and heights. One end of the connecting rod 73 is rotatably connected to the gear plate 71 via a first pin 731, and the other end is rotatably connected to the connecting plate 1112 on the front wheel axle 111 via a second pin 732. The connecting plate 1112 and the gear plate 71 are located on the same side of the grass pusher 100.

[0105] like Figures 31 to 33 As shown, in this embodiment, the adjustment assembly 74 includes an adjustment button 741, an adjustment rod 742, and a return spring 743. The adjustment button 741 is mounted on the tail cap mounting base 117. The adjustment button 741 includes an adjustment connecting rod 7411 and a button 7412. One end of the adjustment connecting rod 7411 is rotatably connected to the tail cap mounting base 117, and the other end is connected to the adjustment rod 742. The button 7412 is located on the end of the adjustment connecting rod 7411 near the end connected to the adjustment rod 742 and protrudes from the tail cap mounting base 117 to facilitate operation by the operator. The adjustment connecting rod 7411, the button 7412, and the tail cap mounting base 117 form a lever structure, which makes it easier to press during operation. The reset spring 743 is sleeved on the adjusting rod 742. One end of the reset spring 743 abuts against a platform structure 7421 on the adjusting rod 742, and the other end abuts against the tail plate 12. Under the action of the reset spring 743, the pressed adjusting button 741 returns to its original position.

[0106] like Figure 34 and Figure 35As shown, in this embodiment, the height adjustment mechanism further includes a reset component. In one embodiment of the present invention, the reset component is a tension spring 75. The tension spring 75 is located on one side of the gear plate 71, with one end connected to the tail plate 12 and the other end fixedly connected to the tension spring hook 715 on the gear plate 71. When the height adjustment mechanism lowers the height, it plays a buffering role. When the height is increased, the tension spring 75 causes the gear plate 71 to rotate under the action of the elastic force to achieve gear switching.

[0107] like Figure 29 , Figures 31 to 36 As shown, in this embodiment, the tail plate 12 has a notch 122 near the gear shift plate 71, and part of the gear shift plate 71 is located within the notch 122. When the gear shift plate 71 rotates, the notch 122 limits the rotation of the gear shift plate 71, preventing excessive rotation. Additionally, the connecting rod 73 is provided with a mounting groove 733 for mounting a gear position indicator 75. The gear position indicator 75 is, for example, a fan-shaped structure with an arc surface 751 on its surface. The arc surface 751 is provided with gear position markings, such as 1, 2, 3… or I, II, III… or similar markings.

[0108] like Figure 6 , Figure 29 , Figures 31 to 37 As shown, a first pin 752 and a second pin 753 are fixed on both sides of the gear position indicator 75. The first pin 752 is connected to the mounting groove 733, and the second pin 753 is connected to the semicircular groove 754 on the base plate 11 by a pressure plate. When the gear is adjusted, the front wheel axle 111 and the rear wheel axle 113 rotate, which drives the connecting rod to rotate. The connecting rod 73 drives the gear position indicator 75 to rotate, so that the gear position mark on the gear position indicator 75 rotates to a specific mark, so as to identify that the lawnmower 100 is in a certain gear.

[0109] like Figure 38 As shown, an indicator hole 23 is provided on the cover 20. The indicator hole 23 is located above the gear indicator 75, so that the operator can observe the gear indicator 75 through the indicator hole 23. When adjusting the gear, the operator can adjust the gear according to the gear indicator 75. The operator can adjust the gear to the corresponding gear when a certain cutting height is needed. The operation is very convenient. When the adjustment component adjusts the cutting height of the grass pusher, the cutting height can be displayed in the indicator hole 23.

[0110] like Figures 27 to 38As shown, specifically, the height reduction process of the gear adjustment is as follows: Pressing the adjustment button 741 causes the adjustment rod 742 to descend, thereby driving the limiting rod 72. The limiting rod 72 disengages from a certain gear groove 713 and enters the slide rail 714. At this time, the front wheel axle 111 and the rear wheel axle 113 lose their limiting function. The operator presses down on the grass pusher, causing the gear plate 71 to rotate, thereby driving the front wheel axle 111 and the rear wheel axle 113 to lower the height of the chassis 10. During rotation, the limiting rod 72 slides in the slide rail 714, and the tension spring 75 is stretched to provide a buffering effect. When the desired specific gear is reached, the adjustment button 741 is released. Under the action of the return spring 743, the adjustment rod 742 returns to its original position, thereby driving the limiting rod 72 into another gear groove 713 and achieving limiting, thus locking the front wheel axle 111 and the rear wheel axle 113 and realizing height adjustment. The height adjustment process is as follows: Pressing the adjustment button 741 causes the adjustment rod 742 to descend, thereby driving the limiting rod 72. The limiting rod 72 disengages from a certain gear groove 713 and enters the slide rail 714. At this time, the front wheel axle 111 and the rear wheel axle 113 lose their limiting function. Under the elastic force of the stretched tension spring 75, the gear plate 71 is driven to rotate, thereby driving the front wheel axle 111 and the rear wheel axle 113 to raise the height of the chassis 10. When the desired specific gear is reached, the adjustment button 741 is released. Under the action of the return spring 743, the adjustment rod 742 returns to its original position, thereby driving the limiting rod 72 into another gear groove 713 and achieving limiting, thus locking the front wheel axle 111 and the rear wheel axle 113 and realizing height adjustment.

[0111] like Figure 38 As shown, in this embodiment, the cover 20 is provided with a through hole 24 to expose the chamber of the battery pack receiving cavity 115, in which the battery pack is installed, thereby facilitating the replacement of the battery pack. The cover 20 is provided with a flip cover mounting part, and a flip cover structure 80 is installed on the flip cover mounting part. The flip cover structure 80 is used to cover the through hole 24 to close the chamber of the battery pack receiving cavity 115, thereby protecting the battery pack inside the chamber.

[0112] like Figures 38 to 42In this embodiment, the flip cover structure 80 includes a flip cover fixing base 81 and a flip cover 82. A plurality of buckles 811 are provided on one side of the inner side of the flip cover fixing base 81 so as to match the buckle groove 812 on the flip cover mounting part to install the flip cover fixing base 81 on the cover 20. Then, the flip cover fixing base 81 is fixedly connected to the cover 20 by passing a bolt through the through hole 813 on the other side of the flip cover fixing base 81. After being fixed by bolts, the front end of the flip cover fixing base 81 just presses against the decorative cover 211, so that the decorative cover 211 is completely fixed.

[0113] The flip cover fixing base 81 has a swing arm mounting groove 814 on one side with a through hole 813 for connecting the flip cover 82. A swing arm structure 821 is installed on one side of the flip cover 82. The swing arm structure 821 includes a swing arm 8211 and a rotating shaft 8212. One end of the swing arm 8211 is fixedly connected to the inner side of the flip cover 82, and the other end is fixedly connected to the rotating shaft 8212. The rotating shaft 8212 of the swing arm structure 821 is installed in the swing arm mounting groove 814 and is rotatably connected to each other, that is, the flip cover 82 can rotate around the rotating shaft 8212.

[0114] Specifically, the installation process of the flip cover structure 80 is as follows: first, the swing arm structure 821 on the flip cover 82 is installed in the swing arm mounting groove 814 to realize the installation between the flip cover 82 and the flip cover fixing seat 81; then, the buckle 811 in the flip cover fixing seat 81 is inserted into the buckle groove 812 on the cover 20, and the through hole 813 on the flip cover fixing seat 81 is aligned with the threaded hole 815 on the cover 20 and fixed with bolts.

[0115] It should also be noted that, in this embodiment, the inner side of the flip cover 82 is provided with multiple reinforcing rib structures 83 to enhance the strength of the flip cover structure 80.

[0116] The present invention proposes a grass pusher, which sets multiple limiting structures on a limiting plate and installs a push rod on the limiting plate. The cooperation between the push rod and the limiting structure is controlled by a crossbar, so that the push rod assembly can be fixed in different positions. The push rod assembly can be fixed to the required position with one hand, and the operator can pull the crossbar from any position next to the grass pusher, making it very convenient to operate.

[0117] This invention proposes a grass trimmer that features a rear plug installed at the grass collection channel at the bottom of the trimmer. The second baffle of the rear plug has an arc surface to prevent cut grass from getting stuck on the second baffle and causing blockage, thus affecting the grass trimming effect. It also better seals the grass collection channel. Furthermore, reinforcing ribs and multiple protrusions on the bottom of the fixing plate enhance the structural strength of the rear plug. Multiple limiting holes are provided on the fixing plate, with each hole corresponding to at least two elastic hole walls, making assembly and disassembly convenient, ensuring accurate positioning after installation, and preventing the rear plug from loosening under impact.

[0118] The present invention proposes a grass trimmer that achieves heat dissipation for the drive components and electrical components inside the grass trimmer by setting different air inlets, thereby preventing the electrical components and drive components from stopping work due to excessive temperature. In addition, it also plays a role in dust prevention by setting air filters at the air inlets, setting at least one bend in the air inlet channel, and setting multiple inclined structures at intervals around the motor mounting hole.

[0119] This invention proposes a height adjustment mechanism that adjusts the height of the chassis by switching gears, thereby adapting to different lawn types and adjusting the chassis height according to the required cutting height. It also avoids tangling with weeds and other debris, making the height adjustment safer, more obvious, and easier to operate. Furthermore, by setting an indicator hole on the top of the cover, the gear position of the lawn mower indicated by the gear indicator can be viewed in a timely and effective manner for adjustment.

[0120] The present invention proposes a grass pusher, wherein the flip-top structure of the grass pusher is fixed to the cover by a flip-top fixing seat. The structure is simple, the fixing is reliable, and the installation process is simple and convenient.

[0121] The above description is merely a preferred embodiment of this application and an explanation of the technical principles used. Those skilled in the art should understand that the scope involved in this application is not limited to the technical solutions formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the inventive concept. For example, technical solutions formed by replacing the above-mentioned features with technical features with similar functions disclosed in this application (but not limited to) each other.

[0122] Apart from the technical features described in the specification, the other technical features are known to those skilled in the art. To highlight the innovative features of this invention, the other technical features will not be described in detail here.

Claims

1. A lawn mower, comprising, Chassis; An electric motor is mounted on the chassis, and an impeller is mounted on the output shaft of the motor. A battery pack receiving cavity is mounted on the chassis; A motor housing is fixedly installed on one side of the battery pack receiving cavity and covers the motor. A cover, mounted on the chassis, is characterized in that, The chassis has a motor mounting hole, and the motor is mounted at the motor mounting hole. An air intake channel is formed between the battery pack cavity and the chassis. The cover has a first air inlet. The air intake channel connects the first air inlet and the motor cover. The air intake channel has at least one bend. The air outlet of the air intake channel, which connects to the inside of the motor cover, is located near the bottom of the motor. Cooling air enters the air intake channel from the first air inlet, flows through the bend, enters the inside of the motor cover from the air outlet, flows upward from the bottom along the outside of the motor cover, and flows downward from the inside of the motor to be discharged from the bottom of the motor.

2. The grass pusher according to claim 1, characterized in that, Multiple inclined structures are spaced around the motor mounting hole. When dust enters the grass pusher, it is discharged through the inclined structures.

3. The grass pusher according to claim 1, characterized in that, A decorative cover is provided on the outside of the first air inlet.

4. The grass pusher according to claim 3, characterized in that, The decorative cover is provided with honeycomb-shaped ventilation holes.

5. The grass pusher according to claim 4, characterized in that, An air filter is also installed on the inside of the decorative cover.

6. The grass pusher according to claim 1, characterized in that, A vent is provided on the top of the motor housing on the side away from the battery pack cavity.

7. The grass pusher according to claim 6, characterized in that, Electrical components are also installed inside the motor housing, and the electrical components are located inside the motor housing and close to the ventilation opening.

8. The grass pusher according to claim 6, characterized in that, An air filter is installed on the inside of the vent.

9. The grass pusher according to claim 1, characterized in that, The grass pusher is equipped with a second air inlet at its rear.

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