Mowing device and mower

Abstract

The utility model relates to the technical field of mowing equipment, and particularly discloses a mowing device and a mower. The mowing machine is provided with a mowing machine body, the mowing device comprises a cutting mechanism, a lifting mechanism and a protection mechanism, the cutting mechanism comprises a driving assembly and a cutting knife, and the driving assembly is connected with the cutting knife; the lifting mechanism is used for driving the cutting mechanism to ascend and descend in the direction close to or away from the ground. The protection mechanism comprises a first protection cover and a second protection cover which are connected with each other, a protection space is formed between the first protection cover and the second protection cover, one part of the cutting knife is located in the protection space and connected with the output end, and the other part of the cutting knife extends out of the protection space to perform mowing action; the second protection cover is located on the side, close to the ground, of the cutter. According to the mowing device, power lost due to friction of the cutting knife is reduced, the situation that the mowing device is shut down due to the fact that grass clippings are wound into the cutting mechanism is reduced, and therefore the mowing efficiency of the mowing machine can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of lawn mowing equipment, and in particular to a lawn mowing device and a lawn mower. Background Art

[0002] When the lawn mower is mowing, the blade will rub against the grass, causing the mower motor to lose power. If the mowing depth is deep or the grass is dense, the motor will be blocked and the mower will stop. In the related art, this problem is improved by reducing the forward speed of the mower and the depth of mowing, which reduces the mowing efficiency of the mower. Utility Model Content

[0003] In view of this, the present application provides a mowing device and a lawn mower, which can improve the mowing efficiency of the lawn mower.

[0004] An embodiment of the present application provides a mowing device, which is applied to a lawn mower. The lawn mower has a lawn mower body, and the mowing device includes a cutting mechanism, a lifting mechanism, and a protective mechanism. The cutting mechanism includes a driving assembly and a cutting knife, and the driving assembly has an output end, and the output end is connected to the cutting knife to drive the cutting knife to rotate. The lifting mechanism is used to connect the lawn mower body, and the lifting mechanism is connected to the driving assembly, and is used to drive the cutting mechanism to perform lifting and lowering movements in a direction close to or away from the ground. The protective mechanism includes a first protective cover and a second protective cover that are connected to each other, the first protective cover is arranged on the driving assembly, and a protective space is formed between the first protective cover and the second protective cover, the output end extends into the protective space, a part of the cutting knife is located in the protective space and connected to the output end, and another part of the cutting knife extends out of the protective space to perform a mowing action; the second protective cover is located on the side of the cutting knife close to the ground.

[0005] In the above-mentioned mowing device, the cutting blade is driven to rotate by the driving assembly so that the cutting mechanism performs mowing action. The lifting motor can drive the cutting mechanism and the protective mechanism to rise and fall, so as to adjust the mowing height according to the actual situation of the ground, reduce the situation that grass clippings block the cutting mechanism and the cutting mechanism collides with ground debris. The setting of the first protective cover and the second protective cover can reduce the contact area between the cutting blade and the grass, and reduce the wear on the cutting blade. When the mower is moving and mowing, the second protective cover is always located below the cutting blade. The second protective cover can first touch the grass on the ground and press the grass under the second protective cover to reduce the risk of grass being drawn into the cutting blade. The above-mentioned mowing device reduces the power lost due to friction with the cutting blade, and reduces the situation that the cutting mechanism is stopped due to being drawn into grass clippings, which is conducive to the mowing device to work with stable power and improves the mowing efficiency of the mower.

[0006] In at least one embodiment, the cutting knife includes a cutter disc and a blade. The cutter disc is arranged in the protection space and is coaxially fixedly connected to the output end. One end of the blade is connected to the cutter disc, and the other end extends out of the protection space for mowing.

[0007] In the above embodiment, the drive assembly drives the blade to rotate by coaxially fixing the output end with the blade disc, so that the blade performs a cutting action. The blade disc is located in the protective space, so that the blade disc is not easy to rub against the grass, and it is not easy for the grass to be rolled into the protective space due to friction and block the cutting blade.

[0008] In at least one embodiment, the second protective cover includes a cover body and a mounting portion, wherein the mounting portion is connected to the outer periphery of the cover body and is connected to the first protective cover.

[0009] In the above-mentioned embodiment, the second protective cover is connected to the first protective cover through the mounting portion, and the cover body can shield the bottom of the cutting knife, thereby reducing the collision between the cutting knife and obstacles.

[0010] In at least one embodiment, the cover body is a disc, and the line connecting the center of the disc and the center of the cutter disc is parallel to the lifting direction of the cutting mechanism. The diameter of the disc is equal to or greater than the diameter of the cutter disc and smaller than the rotating diameter of the blade.

[0011] In the above embodiment, the blade extends out of the protective space along the radial direction of the disc portion, so as not to be blocked by the disc portion, so as to facilitate mowing. The blade disc is located in the protective space and can be completely blocked by the disc portion in the lifting direction, so as to reduce the friction on the blade disc and improve the safety of the cutting knife.

[0012] In at least one embodiment, the lifting mechanism includes a power component and a guide component connected to each other, the power component has a power end, and the power end is connected to the drive component to drive the cutting mechanism to perform lifting and lowering movements; the guide component is constructed to be arranged on the lawn mower body and connected to the drive component to guide the lifting and lowering direction of the cutting mechanism.

[0013] In the above-mentioned embodiment, the power component outputs power through the power end to drive the driving component to perform lifting movement, so that the driving component drives the cutting knife to lift and lower, so as to adjust the mowing depth of the cutting knife. The driving component can also drive the first protective cover and the second protective cover to perform lifting movement, and adjust the distance between the first protective cover and the second protective cover relative to the ground, so that the second protective cover can easily press the grass clippings cut by the cutting knife to the bottom of the second protective cover, so as to reduce the interference of the grass clippings on the cutting knife. The guide component can guide the cutting mechanism to perform lifting movement, and improve the stability of the cutting mechanism movement.

[0014] In at least one embodiment, the guide assembly includes a guide member and a sliding member, the guide member is constructed to be connected to the lawn mower body and extend along the lifting direction of the cutting mechanism, the sliding member is slidably disposed on the guide member, and the sliding member is connected to the driving assembly.

[0015] In the above-mentioned embodiment, when the cutting mechanism is raised or lowered, it can move along the extension direction of the guide member through the sliding member, thereby reducing the deviation of the cutting mechanism during movement and improving the smoothness of the movement of the cutting mechanism.

[0016] In at least one embodiment, the lifting mechanism also includes a transmission assembly, which includes a meshing gear and a rack, the rack extends along the lifting direction of the cutting mechanism, the power end is coaxially fixedly connected to the gear to drive the gear to rotate, and the rack is connected to the driving assembly.

[0017] In the above embodiment, the output end transmits power to the cutting mechanism through the transmission assembly. The power of the power assembly output end is first transmitted to the rack through the gear, and then the rotational power of the output end is converted into linear motion power through the rack, so that the rack drives the driving assembly to move up and down.

[0018] In at least one embodiment, the driving assembly further includes a first connecting member, which is sleeved on the output end and coaxially fixedly connected to the output end, and the cutting knife is connected to the first connecting member.

[0019] In the above embodiment, the output end transmits the rotational power to the cutting knife through the first connecting member, so that the cutting knife can rotate. The first connecting member can protect the output shaft, improve the structural strength of the output shaft, and make the output shaft not easy to break.

[0020] In at least one embodiment, the driving assembly further includes a driving member and a protective shell, the driving member has an output end, the driving member is disposed in the protective shell, and the output end is located outside the protective shell; the lifting mechanism is connected to the protective shell.

[0021] In the above embodiment, the lifting mechanism drives the protective shell to move so that the cutting mechanism as a whole can move up and down. The protective shell can provide protection for the driving member, reducing the risk of debris such as grass clippings and dust flying into the driving member and damaging the driving member.

[0022] An embodiment of the present application further provides a lawn mower, which includes a lawn mower body and a lawn mower device in any of the above embodiments, wherein a lifting mechanism is arranged on the lawn mower body, and a protection mechanism and a cutting knife are located on one side of the lawn mower body.

[0023] The above lawn mower can adjust the mowing height of the cutting mechanism through the lifting mechanism, which is also convenient for the cutting mechanism to avoid debris on the ground and reduce the collision of the cutting mechanism. The protection mechanism can protect the cutting blade and reduce the wear of the cutting blade by the grass, so that the cutting mechanism is not easily damaged and the mowing efficiency of the lawn mower is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a cross-sectional view of a lawn mower in one embodiment of the present application at an angle.

[0025] Figure 2 yes Figure 1 Enlarged view of part II.

[0026] Figure 3 is an exploded view of a lawn mower in one embodiment of the present application.

[0027] Figure 4 It is a schematic diagram of the bottom structure of a lawn mower in one embodiment of the present application.

[0028] Figure 5 It is a stereoscopic diagram of a first connecting member in one embodiment of the present application.

[0029] Figure 6 It is an exploded view of the lawn mower in one embodiment of the present application at another angle.

[0030] Figure 7 It is a schematic diagram of a transmission assembly and a power assembly in one embodiment of the present application.

[0031] Main component symbols

[0032] Mowing device 100

[0033] Cutting mechanism 10

[0034] Drive assembly 11

[0035] Output 111

[0036] Driving member 112

[0037] Protective case 113

[0038] The first connecting member 114

[0039] The second connecting member 115

[0040] The third connecting member 116

[0041] Cutting knife 12

[0042] Knife plate 121

[0043] Blade 122

[0044] Bellows 13

[0045] Protection Agency 20

[0046] First protective cover 21

[0047] Substrate 211

[0048] First side plate 212

[0049] Second side plate 213

[0050] Second protective cover 22

[0051] Cover body 221

[0052] Mounting section 222

[0053] Protected Space 23

[0054] Cutting 24

[0055] Fourth connecting member 25

[0056] Lifting mechanism 30

[0057] Power Components 31

[0058] Power end 311

[0059] Power parts 312

[0060] Guide assembly 32

[0061] Guide 321

[0062] Sliding member 322

[0063] Transmission components 33

[0064] Gear 331

[0065] Rack 332

[0066] Lawn mower 200

[0067] Lawn mower body 201

[0068] Installation cavity 2011

[0069] Wheel 202

[0070] The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0071] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0072] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0073] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0074] When the lawn mower is mowing, the blade will rub against the grass, causing the mower motor to lose power. If the mowing depth is deep or the grass is dense, the motor will be blocked and the mower will stop. In the related art, this problem is improved by reducing the forward speed of the mower and the depth of mowing, which reduces the mowing efficiency of the mower.

[0075] The embodiment of the present application provides a mowing device applied to a lawn mower, the lawn mower having a lawn mower body, and the mowing device including a cutting mechanism, a lifting mechanism and a protective mechanism. The cutting mechanism includes a driving assembly and a cutting knife, the driving assembly having an output end, and the output end is connected to the cutting knife to drive the cutting knife to rotate. The lifting mechanism is used to connect the lawn mower body, and the lifting mechanism is connected to the driving assembly, and is used to drive the cutting mechanism to perform lifting and lowering movements in a direction close to or away from the ground. The protective mechanism includes a first protective cover and a second protective cover connected to each other, the first protective cover is arranged on the driving assembly, a protective space is formed between the first protective cover and the second protective cover, the output end extends into the protective space, a part of the cutting knife is located in the protective space and connected to the output end, and another part of the cutting knife extends out of the protective space to perform a mowing action; the second protective cover is located on the side of the cutting knife close to the ground.

[0076] In the above-mentioned mowing device, the cutting blade is driven to rotate by the driving assembly so that the cutting mechanism performs mowing action. The lifting motor can drive the cutting mechanism and the protective mechanism to rise and fall, so as to adjust the mowing height according to the actual situation of the ground, reduce the situation that grass clippings block the cutting mechanism and the cutting mechanism collides with ground debris. The setting of the first protective cover and the second protective cover can reduce the contact area between the cutting blade and the grass, and reduce the wear on the cutting blade. When the mower is moving and mowing, the second protective cover is always located below the cutting blade. The second protective cover can first touch the grass on the ground and press the grass under the second protective cover to reduce the risk of grass being drawn into the cutting blade. The above-mentioned mowing device reduces the power lost due to friction with the cutting blade, and reduces the situation that the cutting mechanism is stopped due to being drawn into grass clippings, which is conducive to the mowing device to work with stable power and improves the mowing efficiency of the mower.

[0077] The embodiments of the present application are further described below in conjunction with the accompanying drawings.

[0078] like Figure 1 As shown, an embodiment of the present application provides a lawn mower 200, which includes a lawn mower body 201 and a lawn mower device 100. The lawn mower device 100 is disposed on the lawn mower body 201, and the lawn mower device 100 can perform a lawn mowing action when walking on the ground.

[0079] See also Figure 1 and Figure 2 In some embodiments, the mowing device 100 includes a cutting mechanism 10, the cutting mechanism 10 includes a driving component 11 and a cutting blade 12, the driving component 11 has an output end 111, and the output end 111 is connected to the cutting blade 12 to drive the cutting blade 12 to rotate. The driving component 11 drives the cutting blade 12 to rotate, so that the cutting mechanism 10 performs a mowing action.

[0080] See also Figure 1 and Figure 2 In some embodiments, the driving assembly 11 further includes a driving member 112 and a protective shell 113, the protective shell 113 is disposed on the lawn mower body 201, the driving member 112 has an output end 111, the driving member 112 is disposed in the protective shell 113, and the output end 111 is located outside the protective shell 113. The protective shell 113 can provide protection for the driving member 112, reducing the risk of debris such as grass clippings and dust flying into the driving member 112 and damaging the driving member 112.

[0081] In some embodiments, the driving member 112 is a motor, and the output end 111 is an output shaft of the motor.

[0082] See also Figures 2 to 4In some embodiments, the cutting blade 12 includes a blade disc 121 and a blade 122. The blade disc 121 is coaxially fixedly connected to the output end 111. One end of the blade 122 is connected to the blade disc 121, and the other end performs a mowing action. The driving component 11 drives the blade 122 to rotate by coaxially fixing the output end 111 and the blade disc 121, so that the blade 122 performs a cutting action.

[0083] In some embodiments, a plane formed when the blade 122 rotates is a rotation plane, and the rotation plane is perpendicular to the rotation axis of the blade 122 , and the rotation axis is also the axis of the output end 111 .

[0084] In some embodiments, the blade disc 121 is generally in the shape of a circular disc.

[0085] In some embodiments, the blade 122 is detachably fixed to the blade disc 121 by screws.

[0086] In some embodiments, a plurality of blades 122 are provided, and the plurality of blades 122 are spaced apart at the edge of the blade disc 121 .

[0087] See also Figure 2 , Figure 3 and Figure 5 In some embodiments, the driving assembly 11 further includes a first connecting member 114, which is sleeved on the output end 111 and coaxially fixedly connected to the output end 111, and the cutting blade 12 is connected to the first connecting member 114. The output end 111 transmits the rotational power to the cutting blade 12 through the first connecting member 114, so that the cutting blade 12 can rotate. The first connecting member 114 can protect the output shaft, improve the structural strength of the output shaft, and make the output shaft not easy to break.

[0088] In some embodiments, the first connecting member 114 is a connecting flange.

[0089] See also Figure 2 , Figure 3 and Figure 5 In some embodiments, the driving assembly 11 further includes a second connecting member 115 and a third connecting member 116. The second connecting member 115 passes through the center of the first connecting member 114 and is fixed to the output end 111, so that the output end 111 is coaxially fixedly connected to the first connecting member 114. The third connecting member 116 passes through the cutter head 121 and is fixed to the first connecting member 114, so that the cutter head 121 is fixedly connected to the first connecting member 114.

[0090] In some embodiments, the second connecting member 115 and the third connecting member 116 are screws to facilitate the disassembly and replacement of the first connecting member 114 and the blade 121. In other embodiments, the second connecting member 115 and the third connecting member 116 may also be other connecting members that are easy to disassemble.

[0091] See also Figure 2 In some embodiments, the cutting mechanism 10 further includes an accordion cover 13, which is disposed at the bottom of the lawn mower body 201 and is used to shield part of the drive assembly 11, and the output end 111 of the drive assembly 11 extends out of the accordion cover 13. The accordion cover 13 prevents dust, grass clippings and other debris from entering the drive assembly 11. The accordion cover 13 can be retracted to adapt to the height of the drive assembly 11, and protect the drive assembly 11 without interfering with the operation of the cutting blade 12.

[0092] See also Figures 2 to 4 In some embodiments, the mowing device 100 further includes a protection mechanism 20, and the protection mechanism 20 and the cutting blade 12 are located on one side of the mower body 201. The protection mechanism 20 includes a first protection cover 21 and a second protection cover 22 connected to each other, the first protection cover 21 is disposed on the driving assembly 11, a protection space 23 is formed between the first protection cover 21 and the second protection cover 22, the output end 111 extends into the protection space 23, a part of the cutting blade 12 is located in the protection space 23 and connected to the output end 111, and another part of the cutting blade 12 extends out of the protection space 23 to perform mowing; the second protection cover 22 is located on the side of the cutting blade 12 close to the ground.

[0093] The first protective cover 21 and the second protective cover 22 only move up and down with the driving assembly 11 but do not rotate with the cutting mechanism 10. The provision of the first protective cover 21 and the second protective cover 22 can reduce the contact area between the cutting blade 12 and the grass, and reduce the wear on the cutting blade 12. When the lawn mower 200 is moving and mowing, the second protective cover 22 is always located below the cutting blade 12. The second protective cover 22 can first touch the grass on the ground and press the grass under the second protective cover 22, so as to reduce the risk of the grass being rolled into the cutting blade 12.

[0094] Specifically, in some embodiments, the blade disc 121 is disposed in the protective space 23, and one end of the blade 122 away from the blade disc 121 extends out of the protective space 23 to perform a mowing action. It can be understood that the blade disc 121 can be completely located in the protective space 23, or the portion for mounting the blade 122 can be located outside the protective space 23. The blade disc 121 is located in the protective space 23, so that the blade disc 121 is not likely to rub against the grass, and it is not likely to roll the grass into the protective space 23 due to friction, thereby blocking the cutting blade 12.

[0095] In some embodiments, the top of the first protective cover 21 is fixed to the bottom of the protective shell 113 , and the first protective cover 21 is provided with an opening, and the output end 111 extends from the opening into the protective space 23 .

[0096] See also Figure 3 and Figure 6In some embodiments, the first protective cover 21 includes a base plate 211, a first side plate 212 and a second side plate 213. The base plate 211 forms the top of the first protective cover 21 and is fixedly connected to the bottom of the protective shell 113. The first side plate 212 and the second side plate 213 are bent relative to the base plate 211 toward the second protective cover 22 to cover the side of the cutting blade 12, thereby protecting the cutting blade 12.

[0097] See also Figure 2 In some embodiments, a cutting opening 24 is provided between the edge of the first protective cover 21 and the edge of the second protective cover 22. For example, a cutting opening 24 is formed between the first side plate 212 and one side edge of the second protective cover 22, and a cutting opening 24 is also formed between the second side plate 213 and the other side edge of the second protective cover 22. The cutting opening 24 is connected to the protection space 23, that is, the protection space 23 is an open space. The blade disc 121 is disposed in the protection space 23, and the cutting opening 24 allows a portion of the blade 122 to extend out of the protection space 23 for cutting.

[0098] In some embodiments, the second protective cover 22 is made of aluminum alloy sheet metal. This configuration prevents the second protective cover 22 from rusting and facilitates maintenance of the second protective cover 22 .

[0099] See also Figure 3 and Figure 4 In some embodiments, the second protective cover 22 includes a cover body 221 and a mounting portion 222, wherein the mounting portion 222 is connected to the outer periphery of the cover body 221 and is connected to the first protective cover 21. The second protective cover 22 is connected to the first protective cover 21 through the mounting portion 222, and the cover body 221 can shield the bottom of the cutting blade 12, thereby reducing the collision between the cutting blade 12 and obstacles.

[0100] In some embodiments, the cover body 221 is a disc, that is, the cover body 221 is set in a disc shape. The line connecting the center of the disc and the center of the cutter disc 121 is parallel to the lifting direction of the cutting mechanism 10, that is, the line connecting the center of the disc and the center of the cutter disc 121 is the rotation axis of the cutting knife 12. The diameter of the disc is equal to or greater than the diameter of the cutter disc 121, and smaller than the rotation diameter of the blade 122.

[0101] The blade 122 extends radially out of the protective space 23 of the disc portion, so as not to be blocked by the disc portion, so as to facilitate mowing. The blade disc 121 is located in the protective space 23, and can be completely blocked by the disc portion in the lifting direction, so as to reduce the friction of the blade disc 121 and improve the safety of the cutting knife 12.

[0102] In some embodiments, a plurality of mounting portions 222 are provided. For example, two mounting portions 222 are provided, and the two mounting portions 222 are provided on two opposite sides of the cover body 221 .

[0103] See also Figure 3 and Figure 4 In some embodiments, the protection mechanism 20 includes a fourth connecting member 25, and the fourth connecting member 25 passes through the first protective cover 21 and the second protective cover 22 to fix the first protective cover 21 and the second protective cover 22. Specifically, the fourth connecting member 25 is a screw, or the fourth connecting member 25 is a matching structure of a bolt and a nut.

[0104] Exemplarily, at least one fourth connecting member 25 passes through one of the mounting portions 222 and is fixed to the first side plate 212 , and at least one fourth connecting member 25 passes through another mounting portion 222 and is fixed to the second side plate 213 .

[0105] In some embodiments, along the lifting direction of the cutting mechanism 10, the distance between the cutting knife 12 and the second protective cover 22 ranges from 0.5 cm to 3 cm. This arrangement makes it difficult for the cutting mechanism 10 to be rolled into grass clippings or debris due to the excessive distance between the cutting knife 12 and the second protective cover 22, and it is also difficult for the cutting knife 12 and the second protective cover 22 to interfere with each other due to the distance between the cutting knife 12 and the second protective cover 22 being too small, thereby making the cutting knife 12 and the second protective cover 22 less likely to be damaged.

[0106] It can be understood that the distance between the cutting blade 12 and the second protective cover 22 can be set to 0.5 cm, or 1.0 cm, or 1.5 cm, or 2.0 cm, or 2.5 cm, or 3.0 cm, or other values ​​within a range of 0.5 cm to 3 cm.

[0107] See also Figure 6 In some embodiments, the mowing device 100 further includes a lifting mechanism 30, which is connected to the mower body 201. The lifting mechanism 30 is connected to the driving assembly 11 and is used to drive the cutting mechanism 10 to perform lifting movements toward or away from the ground, that is, the cutting mechanism 10 is movably arranged on the mower body 201 through the lifting mechanism 30.

[0108] The lifting motor can drive the cutting mechanism 10 and the protection mechanism 20 to rise and fall, so as to adjust the mowing height according to the actual situation of the ground. When touching stones and other debris, the height of the cutting mechanism 10 can be raised to avoid obstacles, thereby reducing the situation where grass clippings block the cutting mechanism 10 and the cutting mechanism 10 collides with debris on the ground.

[0109] In some embodiments, the lifting mechanism 30 is connected to the protective shell 113, and the lifting mechanism 30 drives the protective shell 113 to move so that the cutting mechanism 10 can be lifted and lowered as a whole.

[0110] See also Figure 6In some embodiments, the lifting mechanism 30 includes a power component 31 and a guide component 32 connected to each other. The power component 31 has a power end 311, and the power end 311 is connected to the driving component 11 to drive the cutting mechanism 10 to perform lifting and lowering movements; the guide component 32 is arranged on the lawn mower body 201 and is connected to the driving component 11 to guide the lifting and lowering direction of the cutting mechanism 10.

[0111] The power assembly 31 outputs power through the power end 311 to drive the driving assembly 11 to perform lifting motion, so that the driving assembly 11 drives the cutting blade 12 to lift and lower, so as to adjust the mowing depth of the cutting blade 12. The driving assembly 11 can also drive the first protective cover 21 and the second protective cover 22 to perform lifting motion, and adjust the distance between the first protective cover 21 and the second protective cover 22 relative to the ground, so that the second protective cover 22 can easily press the grass clippings cut by the cutting blade 12 to the bottom of the second protective cover 22, so as to reduce the interference of the grass clippings with the cutting blade 12. The guide assembly 32 can guide the cutting mechanism 10 to perform lifting motion, so as to improve the stability of the movement of the cutting mechanism 10.

[0112] See also Figure 6 In some embodiments, the power assembly 31 further includes a power piece 312, the power end 311 is connected to the power piece 312, and the power piece 312 is used to drive the power end 311 to rotate. For example, the power piece 312 is a motor, and the power end 311 is an output shaft of the motor.

[0113] See also Figure 6 In some embodiments, the guide assembly 32 includes a guide member 321 and a sliding member 322. The guide member 321 is constructed to be connected to the lawn mower body 201 and extend along the lifting direction of the cutting mechanism 10. The sliding member 322 is slidably disposed on the guide member 321, and the sliding member 322 is connected to the driving assembly 11.

[0114] When the cutting mechanism 10 is raised or lowered, it can move along the extension direction of the guide member 321 through the sliding member 322, thereby reducing the deviation of the cutting mechanism 10 during movement and improving the smoothness of the movement of the cutting mechanism 10.

[0115] Specifically, in some embodiments, the sliding member 322 is connected to the protective shell 113 , and the sliding member 322 drives the protective shell 113 to rise and fall to drive the entire driving assembly 11 to rise and fall.

[0116] See also Figure 6 In some embodiments, the guide member 321 is a guide shaft connected to the lawn mower body 201; the sliding member 322 is a sleeve, which is sleeved on the guide shaft and connected to the driving assembly 11. For example, the sleeve is a linear bearing, which can reduce the friction between the linear bearing and the guide shaft so that the linear bearing can slide on the guide shaft.

[0117] In some embodiments, the guide member 321 is a slide rail connected to the lawn mower body 201 ; the sliding member 322 is a slider that is slidably disposed on the slide rail and connected to the driving assembly 11 .

[0118] In some embodiments, multiple groups of guide assemblies 32 are provided. For example, two guide assemblies 32 are provided. The two guide assemblies 32 are arranged opposite to each other to jointly guide the lifting and lowering movement of the driving assembly 11 .

[0119] See also Figure 7 In some embodiments, the lifting mechanism 30 also includes a transmission assembly 33, which includes a meshing gear 331 and a rack 332, the rack 332 extends along the lifting direction of the cutting mechanism 10, the power end 311 is coaxially fixedly connected with the gear 331 to drive the gear 331 to rotate, and the rack 332 is connected to the driving assembly 11.

[0120] The output end 111 transmits power to the cutting mechanism 10 through the transmission assembly 33. The power of the output end 111 of the power assembly 31 is first transmitted to the rack 332 through the gear 331, and then the rotational power of the output end 111 is converted into linear motion power through the rack 332, so that the rack 332 drives the driving assembly 11 to move up and down.

[0121] In other embodiments, the transmission assembly 33 may also be a screw structure.

[0122] See also Figure 1 In some embodiments, the lawn mower body 201 has an installation cavity 2011 , and the lifting mechanism 30 and part of the driving assembly 11 are located in the installation cavity 2011 , thereby providing protection for the lifting mechanism 30 and the driving assembly 11 .

[0123] In some embodiments, the lawn mower 200 further includes a control system (not shown), which is disposed on the lawn mower body 201. The control system is in communication with the lifting mechanism 30, the cutting mechanism 10, and the protection mechanism 20, and the control system is used to send and receive signals to control the movement of the lifting mechanism 30, the cutting mechanism 10, and the protection mechanism 20. When the second protection cover 22 touches an obstacle such as a stone, the signal is fed back to the control system, and the control system sends a control signal to the lifting mechanism 30, so that the lifting mechanism 30 drives the cutting mechanism 10 to rise to avoid the obstacle.

[0124] See also Figure 1 In some embodiments, the lawn mower 200 further includes a power system (not shown) and wheels 202, wherein the power system is connected to the control system and is connected to the wheels 202. The control system can send a control signal to enable the power system to drive the wheels 202 to rotate.

[0125] In some embodiments, the lawn mower 200 reduces the power loss due to the friction of the cutting blade 12 through the mowing device 100, and reduces the situation where the cutting mechanism 10 is stopped due to being caught in grass clippings, thereby facilitating the mowing device 100 to operate with stable power and improving the mowing efficiency of the lawn mower 200.

[0126] In addition, those skilled in the art may also make other changes in the present application. Of course, these changes made based on the present application should be included in the scope disclosed in the present application.

Claims

1. A mowing device, applied to a lawn mower, the lawn mower having a lawn mower body, characterized in that: The mowing device comprises: The cutting mechanism comprises a driving assembly and a cutting knife, wherein the driving assembly has an output end, and the output end is connected to the cutting knife to drive the cutting knife to rotate; A lifting mechanism, used for connecting the lawn mower body, the lifting mechanism is connected to the driving assembly, and is used for driving the cutting mechanism to perform lifting movement in a direction close to or away from the ground; The protection mechanism comprises a first protection cover and a second protection cover connected to each other, wherein the first protection cover is arranged on the driving assembly, a protection space is formed between the first protection cover and the second protection cover, the output end extends into the protection space, a part of the cutting knife is located in the protection space and connected to the output end, and another part of the cutting knife extends out of the protection space for mowing; the second protection cover is located on the side of the cutting knife close to the ground.

2. The mowing device according to claim 1, characterized in that The cutting knife comprises a cutter disc and a blade. The cutter disc is arranged in the protection space and is coaxially fixedly connected with the output end. One end of the blade is connected to the cutter disc, and the other end extends out of the protection space for mowing.

3. The mowing device according to claim 2, characterized in that The second protective cover includes a cover body and a mounting portion, wherein the mounting portion is connected to the outer periphery of the cover body and is connected to the first protective cover.

4. The mowing device according to claim 3, characterized in that: The cover body is a disc, a line connecting the center of the disc and the center of the cutter disc is parallel to the lifting direction of the cutting mechanism, and a diameter of the disc is equal to or greater than the diameter of the cutter disc and smaller than the rotation diameter of the blade.

5. The mowing device according to claim 1, characterized in that: The lifting mechanism comprises a power assembly and a guide assembly connected to each other, wherein the power assembly has a power end, and the power end is connected to the driving assembly to drive the cutting mechanism to perform lifting motion; The guide assembly is configured to be disposed on the lawn mower body and connected to the driving assembly to guide the lifting direction of the cutting mechanism.

6. The mowing device according to claim 5, characterized in that The guide assembly includes a guide member and a sliding member. The guide member is configured to be connected to the lawn mower body and extend along the lifting direction of the cutting mechanism. The sliding member is slidably disposed on the guide member and is connected to the driving assembly.

7. The mowing device according to claim 5, characterized in that The lifting mechanism also includes a transmission assembly, which includes a meshing gear and a rack. The rack extends along the lifting direction of the cutting mechanism. The power end is coaxially fixedly connected to the gear to drive the gear to rotate. The rack is connected to the driving assembly.

8. The mowing device according to claim 1, characterized in that: The driving assembly further comprises a first connecting member, which is sleeved on the output end and coaxially fixedly connected to the output end, and the cutting knife is connected to the first connecting member.

9. The mowing device according to claim 1, characterized in that: The driving assembly further includes a driving member and a protective shell, the driving member has the output end, the driving member is arranged in the protective shell, and the output end is located outside the protective shell; the lifting mechanism is connected to the protective shell.

10. A lawn mower, characterized in that: It comprises a lawn mower body and the lawn mowing device according to any one of claims 1 to 9, wherein the lifting mechanism is arranged on the lawn mower body, and the protection mechanism and the cutting knife are located on one side of the lawn mower body.

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