Protective part, blade assembly and lawn mower

Abstract

The present invention discloses a protective member, a blade assembly and a lawn mower, the lawn mower comprising: a body, a cutter disc and a blade assembly. The cutter disc is arranged on the body; the blade assembly is connected to the cutter disc to rotate with the cutter disc; the blade assembly comprises a blade provided with a cutting portion and a protective member arranged outside the blade to prevent the blade from accidentally touching the cutting portion, the blade is connected to the cutter disc, and at least part of the side edge of the cutting portion is exposed outside the protective member to facilitate cutting. Thus, by providing the protective member, the cutting portion of the blade can be prevented from directly contacting a person, and a person can be prevented from being cut by the blade, thereby improving the safety of the lawn mower, and also protecting the blade, and extending the service life of the blade.

Description

Technical Field

[0001] The invention relates to the field of lawn mowers, and in particular to a protective element, a blade assembly and a lawn mower. Background Art

[0002] In the related art, the blades of existing lawn mowers are all exposed, and there is no direct protection for the blades. During use, there is a risk of accidental cuts by the blades when the user uses the lawn mower improperly or removes the blades, which reduces the safety of the lawn mower. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a lawn mower that can prevent people from being cut by blades, thereby improving the safety of the lawn mower.

[0004] In order to achieve the above object, the present invention can adopt the following technical solutions:

[0005] A lawn mower comprising:

[0006] body;

[0007] A knife disc is arranged on the machine body;

[0008] A blade assembly is connected to the cutter disc to rotate with the cutter disc;

[0009] The blade assembly includes a blade with a cutting portion and a protective member disposed outside the blade to prevent accidental contact with the cutting portion, the blade is connected to the cutter disc, and at least a portion of the side edge of the cutting portion is exposed outside the protective member to facilitate cutting;

[0010] The blade includes a blade body and the cutting portion arranged on at least one of the two sides of the blade body, and the protective member includes at least one blocking portion for preventing accidental contact with the cutting portion, and the blocking portion at least covers a portion of the cutting portion and the outermost edge on the same side of the cutting portion protrudes from the side edge of the cutting portion.

[0011] Furthermore, the blade includes two cutting parts arranged on both sides of the blade body, and the protective member includes at least two blocking parts respectively located on both sides of the blade body, and the outermost edges of the two blocking parts both protrude from the side edges of the corresponding cutting parts.

[0012] Furthermore, the protective member includes at least two blocking portions located on the same side of the same cutting portion, and the at least two blocking portions are spaced apart to form a groove between two adjacent blocking portions, so that the corresponding cutting portion is exposed in the groove to facilitate cutting.

[0013] Furthermore, the number of the grooves on the same side of the protective member is 2 to 4.

[0014] Furthermore, the distance between adjacent blocking parts is 3-7 mm.

[0015] Furthermore, the distance between the outermost edge of the blocking portion and the side edge of the cutting portion on the same vertical plane is 2-6 mm.

[0016] Furthermore, the protective member includes a front end blocking portion arranged at the front end of the blade to prevent accidental contact with the front edge of the cutting portion, and the side edge of the front end blocking portion protrudes from the side edge of the front end of the cutting portion.

[0017] Furthermore, the protective member also includes an intermediate blocking portion spaced apart from the front end blocking portion, and a side edge of the intermediate blocking portion protrudes from a side edge of the cutting portion on the same vertical plane as the intermediate blocking portion. The protective member also includes a connecting portion for connecting the intermediate blocking portion and the front end blocking portion, and an outermost edge of the connecting portion located on the same side of the cutting portion is recessed inwardly compared to a side edge of the cutting portion on the same vertical plane as the connecting portion, so that the corresponding side edge of the cutting portion is exposed outside the connecting portion.

[0018] Furthermore, the protective member includes a protective body disposed outside the blade and a receiving cavity surrounded by the protective body for receiving the blade, and the protective body includes the blocking portion.

[0019] Furthermore, the blade includes: a blade middle portion, the cutting portion extending from the blade middle portion to at least one of the two sides, a fixing portion extending from the blade middle portion for fixing the blade to the blade disc, and a front end portion extending forward from the blade middle portion.

[0020] Furthermore, the protective body includes a front blocking portion covering the front end portion of the blade, a rear blocking portion for covering the fixed portion of the blade, and a connecting portion for connecting the front blocking portion and the rear blocking portion, and the front blocking portion of the protective member covers the front edge of the cutting portion.

[0021] Furthermore, the rear end blocking portion of the protective member completely covers the fixing portion of the blade.

[0022] Furthermore, the protective member further comprises a middle blocking portion extending from the connecting portion to both sides, and the outermost edge of the middle blocking portion protrudes outwardly from the side edge of the cutting portion;

[0023] A groove is formed between the middle blocking portion and the front blocking portion and the rear blocking portion.

[0024] Furthermore, the blade and the protective member are integrally formed together.

[0025] Furthermore, the cutter disc includes at least two blades and at least two protective members, at least two blades are spaced apart along the circumferential direction of the cutter disc, and the protective members correspond to the blades one by one.

[0026] Furthermore, the cutter disc is eccentrically arranged below the fuselage, and is biased toward one side of the fuselage.

[0027] Furthermore, the lawn mower also includes a protective cover, which includes side protection and bottom protection, the side protection is located on the side of the blade disc to establish a protective barrier on the side of the blade disc, and the bottom protection is located below the blade disc to establish a protective barrier below the blade disc, wherein a grass inlet is opened on the bottom protection.

[0028] Furthermore, the lawn mower is an intelligent lawn mower capable of autonomous movement and autonomous operation.

[0029] Furthermore, the kinetic energy of the lawn mower is less than 2J, and the linear speed of the blade assembly is less than 2000m / min.

[0030] The present invention can also adopt the following technical solutions:

[0031] A protective member for protecting the blade of a lawn mower, wherein the protective member is arranged outside the blade and can rotate with the blade to prevent the cutting portion of the blade from being accidentally touched, and at least part of the side edge of the cutting portion of the blade is exposed outside the protective member to facilitate cutting. The blade includes a blade body and the cutting portion arranged on at least one of the two sides of the blade body, and the protective member includes at least one blocking portion for preventing accidental contact with the cutting portion, and the blocking portion at least covers the outside of part of the cutting portion and the outermost edge located on the same side of the cutting portion protrudes from the side edge of the cutting portion.

[0032] Furthermore, the protective member includes at least two blocking portions located on the same side of the same cutting portion, and the at least two blocking portions are spaced apart to form a groove between two adjacent blocking portions, so that the corresponding cutting portion is exposed in the groove to facilitate cutting.

[0033] Furthermore, the number of the grooves on the same side of the protective member is 2 to 4, the distance between adjacent blocking portions is 3-7 mm, and the distance between the outermost edge of the blocking portion and the side edge of the cutting portion on the same vertical plane is 2-6 mm.

[0034] Furthermore, the protective member includes a front end blocking portion arranged at the front end of the blade to prevent accidental contact with the front edge of the cutting portion, and the side edge of the front end blocking portion protrudes from the side edge of the front end of the cutting portion.

[0035] Furthermore, the protective member also includes an intermediate blocking portion spaced apart from the front end blocking portion, and a side edge of the intermediate blocking portion protrudes from a side edge of the cutting portion on the same vertical plane as the intermediate blocking portion. The protective member also includes a connecting portion for connecting the intermediate blocking portion and the front end blocking portion, and an outermost edge of the connecting portion located on the same side of the cutting portion is recessed inwardly compared to a side edge of the cutting portion on the same vertical plane as the connecting portion, so that the corresponding side edge of the cutting portion is exposed outside the connecting portion.

[0036] Furthermore, the protective member includes a protective body disposed outside the blade and a receiving cavity surrounded by the protective body for receiving the blade, and the protective body includes the blocking portion.

[0037] Furthermore, the middle part of the blade, the cutting part extending from the middle part of the blade to at least one of the two sides, the fixing part extending from the middle part of the blade for fixing the blade to the blade disc of the lawn mower, and the front end part extending forward from the middle part of the blade, the protective part includes a front blocking part covering the front end part of the blade, a rear blocking part covering the fixing part of the blade, and a connecting part connecting the front blocking part and the rear blocking part, and the front blocking part of the protective part covers the front edge of the cutting part.

[0038] Furthermore, the rear end blocking portion of the protective member completely covers the fixing portion of the blade.

[0039] Furthermore, the protective member further comprises a middle blocking portion extending from the connecting portion to both sides, and the outermost edge of the middle blocking portion protrudes outwardly from the side edge of the cutting portion;

[0040] A groove is formed between the middle blocking portion and the front blocking portion and the rear blocking portion.

[0041] Furthermore, the blade assembly includes a blade for a lawn mower and the above-mentioned protective member for protecting the blade of the lawn mower, the blade is installed on the cutter disc of the lawn mower, and the blade includes a blade body and a cutting portion arranged on at least one of the two sides of the blade body.

[0042] Furthermore, the blade and the protective member are integrally formed together.

[0043] The present invention can also adopt the following technical solutions:

[0044] A lawn mower comprising:

[0045] body;

[0046] A cutter disc assembly is arranged on the machine body, and the cutter disc assembly comprises a cutter disc and a blade arranged on the cutter disc and having a cutting portion;

[0047] A protective member is disposed on the cutter disc assembly and rotates with the cutter disc to prevent the cutting portion of the blade from being accidentally touched, and at least a portion of the side edge of the cutting portion is exposed outside the protective member to facilitate cutting;

[0048] The blade includes a blade body and the cutting portion arranged on at least one of the two sides of the blade body, and the protective member includes at least one blocking portion for preventing accidental contact with the cutting portion, and the blocking portion at least covers a portion of the cutting portion and the outermost edge on the same side of the cutting portion protrudes from the side edge of the cutting portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0050] Figure 1 is a schematic diagram of an embodiment of a lawn mower according to an embodiment of the present invention;

[0051] Figure 2 is a schematic diagram of another embodiment of a lawn mower according to an embodiment of the present invention;

[0052] Figure 3 is a top view of a blade assembly according to an embodiment of the present invention;

[0053] Figure 4 is a cross-sectional view of a blade assembly according to an embodiment of the present invention;

[0054] Figure 5 is another angled schematic diagram of a blade assembly according to an embodiment of the present invention;

[0055] Figure 6 is an exploded view of a blade assembly according to an embodiment of the present invention;

[0056] Figure 7 is a schematic diagram of a protective member of a blade assembly according to an embodiment of the present invention;

[0057] Figure 8 is a schematic diagram of assembling a protective member and a blade according to another specific embodiment of a blade assembly according to an embodiment of the present invention;

[0058] Fig. 9 is a schematic diagram of assembling a protective member and a blade according to another specific embodiment of a blade assembly according to an embodiment of the present invention;

[0059] Fig.10 is a schematic diagram of assembling a protective member and a blade according to another specific embodiment of a blade assembly according to an embodiment of the present invention;

[0060] Fig.11 is a schematic diagram of assembling a protective member and a blade according to another specific embodiment of a blade assembly according to an embodiment of the present invention;

[0061] Fig.12 It is a schematic diagram of the assembly of the protective member of the blade assembly according to an embodiment of the present invention arranged on the blade disc.

[0062] Reference numerals:

[0063] Blade assembly 10;

[0064] Knife plate 1;

[0065] Blade 2; cutting portion 21; blade body 22; blade middle portion 23; fixing portion 24; front end portion 25;

[0066] Protective member 3; groove 31; first sheet 32; second sheet 33; first slot 34; second slot 35; first connecting portion 36;

[0067] Blocking portion 37; front blocking portion 371; middle blocking portion 372; connecting portion 373; protection body 374; rear blocking portion 375;

[0068] Threaded fasteners 4;

[0069] Lawn mower 20;

[0070] Chassis 201; protective cover 202; side protection 203; bottom protection 204; flange 205; fuselage 206. DETAILED DESCRIPTION

[0071] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0072] Reference below Figure 1-Figure 12 The lawn mower 20 according to an embodiment of the present invention is described. In this embodiment, an intelligent lawn mower is taken as an example, and the intelligent lawn mower can move and work autonomously. Of course, in other embodiments, the lawn mower can also be other lawn mowers, such as a push lawn mower or a riding lawn mower, etc.

[0073] like Figure 1-Figure 12As shown, the intelligent lawn mower 20 according to an embodiment of the present invention includes: a body 206, a blade disc 1 and a blade assembly 10. The blade disc 1 can be arranged on the body 206, and the blade assembly 10 is connected to the blade disc 1. Such an arrangement allows the blade assembly 10 to rotate with the blade disc 1. The blade assembly 10 may include a blade 2 provided with a cutting portion 21 and a protective member 3 arranged outside the blade 2 to prevent accidental contact with the cutting portion 21. The blade 2 is connected to the blade disc 1, and at least part of the side edge of the cutting portion 21 is exposed outside the protective member to facilitate cutting. At least part of the side edge of the cutting portion 21 of the blade 2 is exposed outside the protective member 3 to facilitate cutting. It should be noted that the protective member 3 can be in direct contact with the blade 2, and there can also be a gap between the protective member 3 and the blade 2. The kinetic energy of the lawn mower is less than 2J, and the linear speed of the blade assembly 10 is less than 2000m / min, so that when the blade assembly rotates, the protective member 3 will not injure the finger when it collides with the finger of the person. The protective member 3 and the blade can be made of the same material or different materials.

[0074] The blade assembly 10 includes a blade 2 for use on an intelligent lawn mower 20 and a protective member 3 for protecting the blade 2 according to the above embodiment. The blade 2 is mounted on a cutter head 1 of the intelligent lawn mower 20, and the blade 2 may include a blade body 22 and a cutting portion 21 disposed on at least one of the two sides of the blade body 22. Such an arrangement enables the blade 2 to have a mowing function, thereby ensuring the mowing efficiency of the blade 2.

[0075] In another embodiment, the protective member 3 can be provided on the cutter head assembly as an independent component and rotates with the cutter head 1. Figure 1 and Figure 2 As shown, the intelligent lawn mower 20 includes: a body 206, a blade assembly and a protective member 3. The blade assembly is arranged on the body 206, and the blade assembly may include a blade 1 and a blade 2 arranged on the blade 1 and provided with a cutting portion 21. The protective member 3 is arranged on the blade assembly and rotates with the blade 1. The protective member 3 can prevent the cutting portion 21 of the blade 2 from being accidentally touched, and at least part of the side edge of the cutting portion 21 is exposed outside the protective member 3. Such an arrangement can facilitate the cutting portion 21 of the blade 2 to cut grass.

[0076] like Figure 8-Figure 11 As shown, the blade 2 includes a blade body 22 and a cutting portion 21 arranged on at least one of the two sides of the blade body 22. The protective member 3 may include at least one blocking portion 37 for preventing accidental contact with the cutting portion 21. The blocking portion 37 is located on the same side of the cutting portion 21 and the outermost edge thereof protrudes from the side edge of the cutting portion 21. The blocking portion 37 can prevent people from accidentally contacting the cutting portion 21, thereby ensuring the safety of the use of the intelligent lawn mower 20.

[0077] like Figure 8-Figure 11As shown, the blade 2 may include two cutting parts 21 disposed on both sides of the blade body 22, and the protective member 3 may include at least two blocking parts 37 respectively disposed on both sides of the blade body 22, and the outermost edges of the two blocking parts 37 are both protruding from the side edges of the corresponding cutting parts 21. Among them, one of the two cutting parts 21 is located on one side of the blade body 22, and the other of the two cutting parts 21 is located on the other side of the blade body 22, and the two cutting parts 21 are disposed opposite to each other. Such an arrangement can make the number and position of the cutting parts 21 more reasonable, so that the blade 2 has a mowing function, thereby improving the mowing efficiency of the blade 2.

[0078] like Figure 8-Figure 11 As shown, the protective member 3 may include at least two blocking portions 37 located on the same side of the same cutting portion 21, and the at least two blocking portions 37 are arranged at intervals to form a groove 31 between two adjacent blocking portions 37, wherein the groove 31 may penetrate the protective member 3 along the thickness direction of the protective member 3, the open end of the groove 31 is located at the edge of the protective member 3, and the cutting portion 21 of the blade 2 is located in the groove 31. By providing the groove 31, the corresponding cutting portion 21 can be exposed in the groove, so that the blade 2 can conveniently cut grass.

[0079] In another embodiment, Figure 8 As shown, the protective member 3 includes two blocking portions 37 located on the same side of the same cutting portion 21, and the two blocking portions 37 are arranged at intervals to form a groove 31 between the two blocking portions 37 on the same side of the protective member 3. In another embodiment, as shown in FIG. Fig. 9 As shown, the protective member 3 includes three blocking portions 37 located on the same side of the same cutting portion 21. The three blocking portions 37 are arranged at intervals to form a groove 31 between two adjacent blocking portions 37 on the same side of the protective member 3. It should be noted that two grooves 31 are formed on the same side of the same cutting portion 21. In another embodiment, as Fig.10 As shown, the protective member 3 includes four blocking portions 37 located on the same side of the same cutting portion 21. The four blocking portions 37 are arranged at intervals to form a groove 31 between two adjacent blocking portions 37 on the same side of the protective member 3. It should be noted that three grooves 31 are formed on the same side of the same cutting portion 21. In another embodiment, as Fig.11 As shown, eight blocking portions 37 are arranged on the outer surface of the blade 2, and the eight blocking portions 37 are arranged independently. Four blocking portions 37 of the eight blocking portions 37 are arranged on one side of the cutting portion 21, and the other four blocking portions 37 are arranged on the other side of the cutting portion 21. The four blocking portions 37 on the same side are arranged at intervals, and the blocking portions 37 can prevent people from contacting the blade 2. In another embodiment, as Fig.12 As shown, the protective member 3 is fixedly arranged on the blade disc 1 , and when the intelligent lawn mower 20 is required to mow the grass, the blade 2 is installed on the protective member 3 .

[0080] Furthermore, the opening size of the open end of the groove 31 is greater than or equal to 3 mm. When the blade assembly 10 is mowing the grass, the grass enters the groove 31 from the open end of the groove 31, and the grass will contact the cutting portion 21 of the blade 2, and then the blade 2 will cut the grass. When the user uses the blade 2 improperly or removes the blade 2, the open end of the groove 31 will contact the person by setting the groove 31 on the protective member 3. The opening of the open end of the groove 31 is smaller than the size of a person's finger. Even if the user uses the blade 2 improperly or removes the blade 2, the cutting portion 21 of the blade 2 will not contact the user's finger. This arrangement can prevent the cutting portion 21 of the blade 2 from directly contacting the person, and can prevent the person from being accidentally cut by the blade 2, thereby improving the safety of the use of the intelligent lawn mower 20. In addition, the protective member 3 can also protect the blade 2 and extend the service life of the blade 2.

[0081] Therefore, by providing the protective member 3, the cutting portion 21 of the blade 2 can be prevented from directly contacting a person, and a person can be prevented from being cut by the blade 2, thereby improving the safety of the smart lawn mower 20, and also protecting the blade 2, thereby extending the service life of the blade 2.

[0082] like Figure 5-Figure 11 As shown, the number of grooves 31 on the same side of the protective member 3 can be set to 2 to 4. Figures 5 to 7 As shown in FIG. 1 , the number of grooves 31 on the same side of the protective member 3 can be set to 2, so that there are 2 cutting points on the same side of the protective member 3 to ensure that the grass is cut, thereby making the number of grooves 31 on the same side of the protective member 3 more reasonable. Of course, in another embodiment, it is also possible to Fig.10 As shown, according to specific circumstances, the number of the grooves 31 on the same side of the protective member 3 can be set to 3, so that there are 3 cutting points on the same side of the protective member 3 to meet actual needs.

[0083] The distance between adjacent blocking portions 37 can be set to 3-7 mm. This setting can make the opening size of the open end of the groove 31 more moderate, and can ensure that people passing through the groove 31 will not touch the blade 2, thereby better ensuring personal safety.

[0084] The distance between the outermost edge of the blocking portion 37 and the side edge of the cutting portion 21 on the same vertical plane is 2-6 mm. For example, the distance between the outermost edge of the blocking portion 37 and the side edge of the cutting portion 21 on the same vertical plane can be set to 4 mm. Such a setting can separate the outermost edge of the blocking portion 37 from the side edge of the cutting portion 21, which can further prevent people from contacting the blade 2.

[0085] In another embodiment, Figure 8-Figure 11As shown, the protective member 3 may include a front end blocking portion 371 arranged at the front end of the blade 2 to prevent accidental contact with the front edge of the cutting portion 21. The side edge of the front end blocking portion 371 protrudes from the side edge of the front end of the cutting portion 21. This arrangement can prevent people from contacting the front end of the blade 2, thereby further ensuring the safety of people.

[0086] The outermost edges of both sides of the protective member 3 may protrude from the cutting portion 21, and the cutting portion 21 may be arranged on both side edges of the blade 2. This arrangement enables the cutting portion 21 to be located inside the edge of the protective member 3, thereby ensuring that the cutting portion 21 does not directly contact a person.

[0087] like Figure 9-11 As shown, the protective member 3 may further include an intermediate blocking portion 372 spaced apart from the front blocking portion 371, the side edge of the intermediate blocking portion 372 protruding from the side edge of the cutting portion 21 on the same vertical plane as the intermediate blocking portion 372, and the protective member 3 may further include a connecting portion 373 for connecting the intermediate blocking portion 372 and the front blocking portion 371, the outermost edge of the connecting portion 373 located on the same side of the cutting portion 21 is recessed inwardly compared to the side edge of the cutting portion 21 on the same vertical plane as the connecting portion 373, so that the corresponding side edge of the cutting portion 21 is exposed outside the connecting portion 373, so that the cutting portion 21 can cut grass, thereby ensuring the working performance of the intelligent lawn mower 20.

[0088] like Figure 5-Figure 10 As shown, the blade 2 is accommodated in the protective member 3, and the protective member 3 includes a protective body 374 arranged outside the blade 2 and a receiving cavity surrounded by the protective body 374 for accommodating the blade 2. The protective body 374 includes a blocking portion 37, and at least part of the side edge of the cutting portion 21 of the blade 2 is exposed outside the protective member 3 to facilitate cutting. The side edge of the cutting portion 21 of the blade 2 can be connected to the outside to facilitate cutting. It should be explained that the protective member 3 can be in direct contact with the blade 2, and there can also be a gap between the protective member 3 and the blade 2. Specifically, the blocking portion 37 can be as shown in FIG. Fig. 9 As shown, the blocking portion 37 includes a front blocking portion 371 and a middle blocking portion 372. Of course, in other embodiments, the blade 2 can also be fixed or assembled with the protective member 3 in other ways, for example, Fig.11 As shown, the protective member 3 includes a plurality of blocking portions 37 fixed around the blade 2. Specifically, the blocking portions 37 can be fixed to the blade 2 by means of adhesive substances or fixing members such as screws and pins.

[0089] The blade 2 is suitable for being connected to the cutter disc 1 of the intelligent lawn mower 20, and at least part of the blade 2 protrudes from the edge of the cutter disc 1. The blade 2 is arranged in the accommodating cavity, and the protective body 374 can be covered on the outside of the blade 2, wherein the protective body 374 can protect the blade 2, thereby preventing the blade 2 from being damaged.

[0090] The blade 2 may include: a blade middle portion 23, a cutting portion 21 extending from the blade middle portion 23 to at least one of the two sides, a fixing portion 24 extending from the blade middle portion 23 for fixing the blade 2 to the blade disc 1, and a front end portion 25 extending forward from the blade middle portion 23. It should be noted that the direction in which the blade middle portion 23 extends to both sides refers to the width direction of the blade 2, the direction in which the blade middle portion 23 extends backward refers to the direction in which the blade 2 is connected to the blade disc 1, and the direction in which the blade middle portion 23 extends forward refers to the free end direction of the blade 2.

[0091] The protective body 374 may include a front blocking portion 371 for covering the front end portion 25 of the blade 2, a rear blocking portion 375 for covering the fixing portion 24 of the blade 2, and a connecting portion 373 for connecting the front blocking portion 371 and the rear blocking portion 375. The front blocking portion 371 of the protective member 3 completely covers the front edge of the cutting portion 21. Such a configuration enables the protective member 3 to better cover the blade 2, thereby preventing the blade 2 from cutting people.

[0092] The rear end blocking portion 375 of the protective member 3 completely covers the fixing portion 24 of the blade 2. Since the fixing portion 24 at the rear end of the blade 2 does not perform a cutting function, this arrangement can prevent the fixing portion 24 of the blade 2 from being exposed to the external environment, thereby preventing the fixing portion 24 of the blade 2 from being corroded, thereby extending the service life of the blade 2.

[0093] The protective member 3 may further include an intermediate blocking portion 372 extending from the connecting portion 373 to both sides, the outermost edge of the intermediate blocking portion 372 protruding outward from the side edge of the cutting portion 21, and a groove 31 may be provided between the intermediate blocking portion 372 and the front blocking portion 371 and the rear blocking portion 375, the cutting portion 21 being located in the groove 31. This arrangement enables the cutting portion 21 to expose the protective member 3, thereby ensuring that the cutting portion 21 can cut grass, and the open end of the groove 31 is smaller than the size of a human finger, so that a human finger cannot be inserted into the groove 31 and the finger will not touch the cutting portion 21.

[0094] In another embodiment, the blade 2 and the protective member 3 are integrally formed together. Such a configuration enables the blade 2 and the protective member 3 to be reliably assembled together, thereby preventing the blade 2 and the protective member 3 from being separated.

[0095] like Fig.12As shown, the cutter disc 1 may include: at least two blades 2 and at least two protective members 3, at least two blades 2 are spaced apart along the circumferential direction of the cutter disc 1, and the protective members 3 correspond to the blades 2 one by one, that is, one blade 2 is assembled with one protective member 3. Such an arrangement enables the exterior of each blade 2 to be covered with a protective member 3, thereby ensuring that each blade 2 will not injure anyone during operation, and also enables the number of blades 2 to be more reasonably arranged, thereby improving the mowing effect of the intelligent lawn mower 20.

[0096] like Figure 1 and Figure 2 As shown, the blade disc 1 is eccentrically arranged below the body 206, and the blade disc 1 is biased toward one side of the body 206. Such an arrangement can further prevent the user from directly contacting the blade 2 on the blade disc 1, thereby better protecting the user.

[0097] like Figure 2 As shown, the smart lawn mower 20 may further include: a protective cover 202, the protective cover 202 may include a side protection 203 and a bottom protection 204, the side protection 203 may be located on the side of the blade 1, such an arrangement may establish a protective barrier on the side of the blade 1, the bottom protection 204 may be located below the blade 1, such an arrangement may establish a protective barrier below the blade 1, wherein a grass inlet is provided on the bottom protection 204, grass can enter the bottom of the smart lawn mower 20 from the grass inlet, and the blade 2 can be guaranteed to cut the grass.

[0098] The protective cover 202 is connected to the chassis 201, and the blade 1 is eccentrically arranged below the body 206, the blade 1 is inclined to one side of the body 206, and the inclination of the side protection 203 and the bottom protection 204 is consistent with the inclination of the blade 1. Such an arrangement can make the protective cover 202 cover the gap between the chassis 201 and the ground. Among them, since the protective cover 202 can cover part of the structure of the blade 1, it can further prevent the user from directly contacting the blade 2 on the blade 1, thereby better protecting the user.

[0099] like Figure 2 As shown, the protective cover 202 may include: side guards 203 and bottom guards 204. The side guards 203 are connected to the chassis 201, and the side guards 203 are located between the chassis 201 and the ground. The bottom guard 204 is located below the chassis 201, and the bottom guard 204 is connected to the side guards 203. The bottom guard 204 and the side guards 203 define a protective space, and part of the structure of the blade assembly 10 is located in the protective space. This arrangement can optimize the structure of the protective cover 202, so that the protective cover 202 can better cover part of the structure of the blade assembly 10, and can also better protect the blade assembly 10.

[0100] like Figure 2 As shown, the protective cover 202 may be provided with at least one hollow structure, that is, the number of hollow structures provided is greater than or equal to one. The hollow structure may be provided on the bottom protection 204. When the smart lawn mower 20 is mowing, the grass can extend into the hollow structure, and the blade 2 can cut the grass, thereby improving the mowing effect of the smart lawn mower 20. In addition, at least one flange 205 may be provided on the bottom protection 204. When the smart lawn mower 20 is mowing, the flange 205 can guide the grass. The flange 205 can guide the grass to the blade assembly 10, so that the blade 2 can quickly cut the grass, thereby further improving the mowing efficiency.

[0101] like Figure 1-Figure 12 As shown, according to an embodiment of the present invention, a protective member 3 for protecting the blade 2 of the smart lawn mower 20 is provided outside the blade 2 and can rotate with the blade 2, wherein the protective member 3 is provided outside the blade 2, so that a person can be prevented from accidentally touching the cutting portion 21 of the blade 2. In addition, at least part of the side edge of the cutting portion 21 of the blade 2 is exposed outside the protective member 3, so that the cutting portion 21 can cut the grass conveniently.

[0102] like Figure 8-Figure 11 As shown, the protective member 3 may include at least one blocking portion 37 for preventing accidental contact with the cutting portion 21 . The outermost edge of the blocking portion 37 located on the same side of the cutting portion 21 protrudes from the side edge of the cutting portion 21 . This arrangement can prevent people from accidentally touching the cutting portion 21 .

[0103] like Figure 8-Figure 11 As shown, the protective member 3 may include at least two blocking portions 37 located on the same side of the same cutting portion 21, and the at least two blocking portions 37 are arranged at intervals to form a groove 31 between two adjacent blocking portions 37. By setting the groove 31, the corresponding cutting portion 21 can be exposed in the groove 31, so that the cutting portion 21 can cut the grass conveniently.

[0104] like Figure 9-11 As shown, the number of grooves 31 on the same side of the protective member 3 can be set to 2 to 4. Figures 5 to 7 As shown in FIG. 1 , the number of grooves 31 on the same side of the protective member 3 can be set to 2, so that there are 2 cutting points on the same side of the protective member 3 to ensure that the grass is cut, thereby making the number of grooves 31 on the same side of the protective member 3 more reasonable. Of course, in another embodiment, it is also possible to Fig.10 As shown, the number of grooves 31 on the same side of the protective member 3 can also be set to 3 according to specific conditions, so that there are 3 cutting points on the same side of the protective member 3 to meet actual needs. The distance between adjacent blocking portions 37 is 3-7 mm, and the distance between the outermost edge of the blocking portion 37 and the side edge of the cutting portion 21 on the same vertical plane is 2-6 mm.

[0105] like Figure 8-Figure 11 As shown, the protective member 3 may include a front end blocking portion 371 arranged at the front end of the blade 2 to prevent accidental contact with the front edge of the cutting portion 21. The side edge of the front end blocking portion 371 protrudes from the side edge of the front end of the cutting portion 21. Such an arrangement can prevent people from accidentally contacting the front end of the blade 2.

[0106] like Figure 9-11 As shown, the protective member 3 may further include an intermediate blocking portion 372 spaced apart from the front blocking portion 371, the side edge of the intermediate blocking portion 372 protruding from the side edge of the cutting portion 21 on the same vertical plane as the intermediate blocking portion 372, and the protective member 3 may further include a connecting portion 373 for connecting the intermediate blocking portion 372 and the front blocking portion 371, the outermost edge of the connecting portion 373 located on the same side of the cutting portion 21 is recessed inwardly compared to the side edge of the cutting portion 21 on the same vertical plane as the connecting portion 373, such a configuration may allow the corresponding side edge of the cutting portion 21 to be exposed outside the connecting portion 373, thereby allowing the cutting portion 21 exposed outside the connecting portion 373 to cut grass.

[0107] The protective member 3 may include a protective body 374 disposed outside the blade 2 and a receiving cavity surrounded by the protective body 374 for receiving the blade. The protective body 374 may include a blocking portion 37 .

[0108] The blade 2 may include: a blade middle portion 23, a cutting portion 21 extending from the blade middle portion 23 to at least one of the two sides, a fixing portion 24 extending from the blade middle portion 23 for fixing the blade 2 to the blade disc 1, and a front end portion 25 extending forward from the blade middle portion 23. It should be noted that the direction in which the blade middle portion 23 extends to both sides refers to the width direction of the blade 2, the direction in which the blade middle portion 23 extends backward refers to the direction in which the blade 2 is connected to the blade disc 1, and the direction in which the blade middle portion 23 extends forward refers to the free end direction of the blade 2. The protective member 3 may include a front end blocking portion 371 covering the front end portion 25 of the blade 2, a rear end blocking portion 375 covering the fixing portion 24 of the blade 2, and a connecting portion 373 connecting the front end blocking portion 371 and the rear end blocking portion 375, and the front end blocking portion 371 of the protective member 3 covers the front edge of the cutting portion 21.

[0109] like Figure 8-Figure 11 As shown, the rear end blocking portion 375 of the protective member 3 completely covers the fixing portion 24 of the blade 2. Since the fixing portion 24 does not perform a cutting function, this arrangement can prevent the fixing portion 24 from being exposed to the external environment and can avoid corrosion of the fixing portion 24, thereby extending the service life of the blade 2.

[0110] like Figure 8-Figure 11As shown, the protective member 3 may further include an intermediate blocking portion 372 extending from the connecting portion 373 to both sides, the outermost edge of the intermediate blocking portion 372 protrudes outward from the side edge of the cutting portion 21, and a groove 31 may be provided between the intermediate blocking portion 372 and the front blocking portion 371 and the rear blocking portion 375. The cutting portion 21 is located in the groove 31, and such a configuration enables the cutting portion 21 to be exposed from the protective member 3, thereby ensuring that the cutting portion 21 can cut grass.

[0111] In another embodiment, the blade 2 may be embedded in the protective member 3. Such a configuration can enhance the structural strength of the blade 2 and the protective member 3 and further prevent the blade 2 from being separated from the protective member 3, thereby ensuring the working performance of the smart lawn mower 20.

[0112] like Figure 3-Figure 7 As shown, the protective member 3 may include: a first sheet 32 ​​and a second sheet 33. The first sheet 32 ​​may be provided with a plurality of first slots 34, which may be spaced apart along the length direction of the first sheet 32. The second sheet 33 may be provided with a plurality of second slots 35, which may be spaced apart along the length direction of the second sheet 33. The plurality of second slots 35 are arranged one-to-one with the plurality of first slots 34. Each second slot 35 corresponds to the corresponding first slot 34 and together forms a groove 31. It should be noted that the correspondingly arranged first slots 34 and the second slots 35 form a groove 31. Such an arrangement can form a groove 31 on the protective member 3, which can make the structural design of the protective member 3 more reasonable, thereby ensuring the working reliability of the blade assembly 10.

[0113] like Figure 4-Figure 7 As shown, the protective member 3 may further include: a first connecting portion 36, which may be connected between the first sheet 32 ​​and the second sheet 33. The first connecting portion 36 can reliably connect the first sheet 32 ​​and the second sheet 33 together, and can prevent the first sheet 32 ​​and the second sheet 33 from being separated, thereby improving the structural strength of the protective member 3, and further ensuring the working reliability of the protective member 3. In addition, the first connecting portion 36 wraps the end of the blade 2, and such a setting can prevent the end of the blade 2 from directly contacting the external environment, and can prevent the blade 2 from being damaged, thereby further extending the service life of the blade 2.

[0114] At least one of the first sheet 32 ​​and the second sheet 33 is fitted with the blade 2, that is, any one of the first sheet 32 ​​and the second sheet 33 can be fitted with the blade 2, or the first sheet 32 ​​and the second sheet 33 can be fitted with the blade 2 at the same time. Such a setting can improve the overall structural strength of the first sheet 32, the second sheet 33 and the blade 2, and can prevent relative movement between the blade 2 and the first sheet 32, and between the blade 2 and the second sheet 33, thereby ensuring that the first sheet 32, the second sheet 33 and the blade 2 move together.

[0115] The protective member 3 can be configured as a single sheet structure, and the protective member 3 is attached to the surface of the blade 2. This configuration can optimize the structure of the protective member 3 and enable the protective member 3 and the blade 2 to be better attached together.

[0116] like Figure 3 , Figure 5 and Figure 6 As shown, the blade 2 may include a blade body 22 and two opposite cutting portions 21 located on both sides of the blade body 22, wherein one of the two cutting portions 21 is located on one side of the blade body 22, and the other of the two cutting portions 21 is located on the other side of the blade body 22. The two cutting portions 21 are arranged relative to each other. Such an arrangement can make the number and position of the cutting portions 21 more reasonable, so that the blade 2 has a mowing function, thereby improving the mowing efficiency of the blade 2.

[0117] At least one side of the protective member 3 is provided with a groove 31, that is, the protective member 3 may be provided with the groove 31 on one side, or the protective member 3 may be provided with grooves 31 on both opposite sides, and the cutting portion 21 of the blade 2 is located in the groove 31. When the blade assembly 10 is mowing grass, the groove 31 is provided on the protective member 3, so that the cutting portion 21 of the blade 2 can be prevented from directly contacting the user, and the user can be prevented from being cut.

[0118] The bottom wall of the groove 31 can be set as an arc surface. This setting can make the structure of the groove 31 more reasonable and allow the cutting portion 21 of the blade 2 to be exposed outside the protective member 3, thereby ensuring that the blade 2 can cut the grass and further ensuring the working reliability of the blade assembly 10.

[0119] like Figure 3-Figure 5As shown, at least one of the blade 2 and the protective member 3 is connected to the cutter disc 1 through the threaded fastener 4. It should be explained that only the blade 2 can be connected to the cutter disc 1 through the threaded fastener 4, or only the protective member 3 can be connected to the cutter disc 1 through the threaded fastener 4, or both the blade 2 and the protective member 3 can be connected to the cutter disc 1 through the threaded fastener 4. When the blade 2 and the protective member 3 are connected to the cutter disc 1 through the threaded fastener 4 at the same time, the blade 2 and the protective member 3 can be connected to the cutter disc 1 through one threaded fastener 4. Such a configuration can firmly assemble the blade 2 and the protective member 3 to the cutter disc 1, prevent the blade 2 and the protective member 3 from loosening, and prevent the blade 2 and the protective member 3 from falling off the cutter disc 1, thereby improving the working reliability of the blade assembly 10, and when the blade 2 and the protective member 3 need to be replaced, the blade 2 and the protective member 3 can be easily disassembled and assembled, and the blade 2 and the protective member 3 can be easily replaced, thereby improving the disassembly and assembly efficiency, and at the same time, it can also reduce the number of components constituting the blade assembly 10, improve the assembly efficiency of the blade assembly 10, and reduce the production cost of the blade assembly 10.

[0120] like Figure 3 , Figure 5 and Figure 6 As shown, the blade disc 1 may be provided with a plurality of blades 2, and the plurality of blades 2 may be spaced apart along the circumferential direction of the blade disc 1. For example, the blade disc 1 may be provided with three blades 2, and the three blades 2 may be spaced apart along the circumferential direction of the blade disc 1. Such a configuration can make the number of blades 2 more reasonable, and can ensure the mowing efficiency of the blade assembly 10, thereby improving the working efficiency of the blade assembly 10.

[0121] There can be multiple protective members 3, and the multiple protective members 3 correspond one to one with the multiple blades 2. It should be noted that the number of protective members 3 is the same as the number of blades 2, and one protective member 3 is mounted on one blade 2. Such a setting can ensure that each blade 2 is protected and that each blade 2 will not come into direct contact with the user.

[0122] The blade assembly 10 according to the embodiment of the present invention comprises a blade 2 for use on an intelligent lawn mower 20 and a protective member 3 for protecting the blade 2 according to the above embodiment. The blade 2 is mounted on a cutter disc 1 of the intelligent lawn mower 20, and the blade 2 may comprise a blade body 22 and a cutting portion 21 disposed on at least one of the two sides of the blade body 22. Such an arrangement enables the blade 2 to have a mowing function, thereby ensuring the mowing efficiency of the blade 2.

[0123] The blade 2 and the protective member 3 may be integrally formed together, and such a configuration may enhance the structural strength of the blade 2 and the protective member 3 and prevent the blade 2 and the protective member 3 from being separated.

[0124] The protective member 3 may include a protective body 374 covering the outside of the blade 2 and a receiving cavity surrounded by the protective body 374 for receiving the blade 2. At least part of the side edge of the cutting portion 21 is exposed outside the protective member 3 to facilitate cutting. The side edge of the cutting portion 21 of the blade 2 is connected to the outside to facilitate cutting. Such an arrangement can ensure that the cutting portion 21 can cut the grass.

[0125] The outermost edges of both sides of the protection member 3 protrude from the cutting portion 21 , so that fingers can be prevented from contacting the cutting portion 21 , thereby preventing the fingers from being damaged.

[0126] The protective member 3 may include a front blocking portion 371 for covering the front end of the blade 2, a rear blocking portion 375 for covering the rear end of the blade 2, and a connecting portion 373 for connecting the front blocking portion 371 and the rear blocking portion 375. The front blocking portion 371 covers the front edge of the cutting portion 21. Such a configuration can prevent the front edge of the cutting portion 21 from being exposed, and can prevent the front edge of the cutting portion 21 from cutting fingers.

[0127] The rear end of the protection member 3 completely covers the rear end of the cutting portion 21 . This arrangement can prevent the rear end of the cutting portion 21 from being exposed, thereby protecting the rear end of the cutting portion 21 .

[0128] The protective member 3 may further include a middle blocking portion 372 extending from the connecting portion 373 to both sides, the outermost edge of the middle blocking portion 372 protrudes outward from the edge of the cutting portion 21, and there are grooves between the middle blocking portion 372 and the front blocking portion 371 and the rear blocking portion 375. The cutting portion 21 is located in the groove 31, and such an arrangement enables the cutting portion 21 to be exposed from the protective member 3, thereby ensuring that the cutting portion 21 can cut grass.

[0129] The blade 2 is suitable for connecting to the blade disc 1 of the intelligent lawn mower 20 . The blade 2 may include: a blade body 22 and cutting parts 21 arranged on both sides of the blade body 22 and used for cutting. The protective body 374 at least covers a portion of the cutting part 21 .

[0130] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0131] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A lawn mower, characterized in that: include: body; A knife disc is arranged on the machine body; A blade assembly is connected to the cutter disc to rotate with the cutter disc; The blade assembly includes a blade with a cutting portion and a protective member disposed outside the blade to prevent accidental contact with the cutting portion, the blade is connected to the cutter disc, and at least a portion of the side edge of the cutting portion is exposed outside the protective member to facilitate cutting; The blade includes a blade body and the cutting portion arranged on at least one of the two sides of the blade body, and the protective member includes at least one blocking portion for preventing accidental contact with the cutting portion, and the blocking portion at least covers a portion of the cutting portion and the outermost edge on the same side of the cutting portion protrudes from the side edge of the cutting portion.

2. The lawn mower according to claim 1, characterized in that The blade includes two cutting parts arranged on both sides of the blade body, and the protective member includes at least two blocking parts respectively located on both sides of the blade body, and the outermost edges of the two blocking parts both protrude from the side edges of the corresponding cutting parts.

3. The lawn mower according to claim 1, characterized in that: The protective member comprises at least two blocking portions located on the same side of the same cutting portion, and the at least two blocking portions are arranged at intervals to form a groove between two adjacent blocking portions, so that the corresponding cutting portion is exposed in the groove to facilitate cutting.

4. The lawn mower according to claim 3, characterized in that The number of the grooves on the same side of the protection member is 2 to 4.

5. The lawn mower according to claim 3, characterized in that: The distance between adjacent blocking parts is 3-7 mm.

6. The lawn mower according to claim 3, characterized in that: The distance between the outermost edge of the blocking portion and the side edge of the cutting portion on the same vertical plane is 2-6 mm.

7. The lawn mower according to claim 1, characterized in that: The protective member comprises a front end blocking portion arranged at the front end of the blade to prevent accidental contact with the front edge of the cutting portion, and a side edge of the front end blocking portion protrudes from a side edge of the front end of the cutting portion.

8. The lawn mower according to claim 7, characterized in that The protective member also includes an intermediate blocking portion spaced apart from the front end blocking portion, and a side edge of the intermediate blocking portion protrudes from a side edge of the cutting portion on the same vertical plane as the intermediate blocking portion. The protective member also includes a connecting portion for connecting the intermediate blocking portion and the front end blocking portion, and an outermost edge of the connecting portion located on the same side of the cutting portion is recessed inwardly compared to a side edge of the cutting portion on the same vertical plane as the connecting portion, so that the corresponding side edge of the cutting portion is exposed outside the connecting portion.

9. The lawn mower according to any one of claims 1 to 8, characterized in that: The protective member comprises a protective body arranged outside the blade and a receiving cavity surrounded by the protective body for receiving the blade, and the protective body comprises the blocking portion.

10. The lawn mower according to claim 9, characterized in that The blade includes: a blade middle portion, the cutting portion extending from the blade middle portion to at least one of two sides, a fixing portion extending from the blade middle portion for fixing the blade to the blade disc, and a front end portion extending forward from the blade middle portion.

11. The lawn mower according to claim 10, characterized in that The protective body includes a front blocking portion covering the front end of the blade, a rear blocking portion for covering the fixing portion of the blade, and a connecting portion for connecting the front blocking portion and the rear blocking portion. The front blocking portion of the protective member covers the front edge of the cutting portion.

12. The lawn mower according to claim 11, characterized in that The rear end blocking portion of the protective member completely covers the fixing portion of the blade.

13. The lawn mower according to claim 11, characterized in that The protective member further comprises a middle blocking portion extending from the connecting portion to both sides, and the outermost edge of the middle blocking portion protrudes outwardly from the side edge of the cutting portion; A groove is formed between the middle blocking portion and the front blocking portion and the rear blocking portion.

14. The lawn mower according to any one of claims 1 to 8, characterized in that The blade and the protective member are integrally formed together.

15. The lawn mower according to any one of claims 1 to 8, characterized in that The cutter disc includes at least two blades and at least two protection members, the at least two blades are spaced apart along the circumferential direction of the cutter disc, and the protection members correspond to the blades one by one.

16. The lawn mower according to any one of claims 1 to 8, characterized in that The cutter disc is eccentrically arranged below the fuselage, and is biased toward one side of the fuselage.

17. The lawn mower according to any one of claims 1 to 8, characterized in that The lawn mower also includes a protective cover, which includes side protection and bottom protection. The side protection is located on the side of the blade disc to establish a protective barrier on the side of the blade disc, and the bottom protection is located below the blade disc to establish a protective barrier below the blade disc, wherein a grass inlet is opened on the bottom protection.

18. The lawn mower according to claim 1, characterized in that The lawn mower is an intelligent lawn mower capable of autonomous movement and autonomous operation.

19. The lawn mower according to claim 1, characterized in that The kinetic energy of the lawn mower is less than 2J, and the linear speed of the blade assembly is less than 2000m / min.

20. A protective member for protecting a blade of a lawn mower, characterized in that: The protective member is arranged outside the blade and can rotate with the blade to prevent the cutting part of the blade from being accidentally touched. At least part of the side edge of the cutting part of the blade is exposed outside the protective member to facilitate cutting. The blade includes a blade body and the cutting part arranged on at least one of the two sides of the blade body. The protective member includes at least one blocking part for preventing the cutting part from being accidentally touched. The blocking part at least covers the outside of part of the cutting part and the outermost edge on the same side of the cutting part protrudes from the side edge of the cutting part.

21. The protective member according to claim 20, characterized in that The protective member comprises at least two blocking portions located on the same side of the same cutting portion, and the at least two blocking portions are arranged at intervals to form a groove between two adjacent blocking portions, so that the corresponding cutting portion is exposed in the groove to facilitate cutting.

22. The protective member according to claim 21, characterized in that The number of the grooves on the same side of the protective member is 2 to 4, the distance between adjacent blocking portions is 3-7 mm, and the distance between the outermost edge of the blocking portion and the side edge of the cutting portion on the same vertical plane is 2-6 mm.

23. The protective member according to claim 21, characterized in that The protective member comprises a front end blocking portion arranged at the front end of the blade to prevent accidental contact with the front edge of the cutting portion, and a side edge of the front end blocking portion protrudes from a side edge of the front end of the cutting portion.

24. The protective member according to claim 23, characterized in that The protective member also includes an intermediate blocking portion spaced apart from the front end blocking portion, and a side edge of the intermediate blocking portion protrudes from a side edge of the cutting portion on the same vertical plane as the intermediate blocking portion. The protective member also includes a connecting portion for connecting the intermediate blocking portion and the front end blocking portion, and an outermost edge of the connecting portion located on the same side of the cutting portion is recessed inwardly compared to a side edge of the cutting portion on the same vertical plane as the connecting portion, so that the corresponding side edge of the cutting portion is exposed outside the connecting portion.

25. The protective element according to any one of claims 20 to 24, characterized in that The protective member comprises a protective body arranged outside the blade and a receiving cavity surrounded by the protective body for receiving the blade, and the protective body comprises the blocking portion.

26. The protective element according to claim 25, characterized in that The blade includes: a middle portion of the blade, the cutting portion extending from the middle portion of the blade to at least one of the two sides, a fixing portion extending from the middle portion of the blade for fixing the blade to the blade disc of the lawn mower, and a front end portion extending forward from the middle portion of the blade, the protective member includes a front end blocking portion covering the front end portion of the blade, a rear end blocking portion covering the fixing portion of the blade, and a connecting portion connecting the front end blocking portion and the rear end blocking portion, and the front end blocking portion of the protective member covers the front edge of the cutting portion.

27. The protective element according to claim 26, characterized in that The rear end blocking portion of the protective member completely covers the fixing portion of the blade.

28. The protective member according to claim 26, characterized in that The protective member further comprises a middle blocking portion extending from the connecting portion to both sides, and the outermost edge of the middle blocking portion protrudes outwardly from the side edge of the cutting portion; A groove is formed between the middle blocking portion and the front blocking portion and the rear blocking portion.

29. A blade assembly for a lawn mower, characterized in that: The blade assembly includes a blade for a lawn mower and a protective member for protecting the blade of the lawn mower according to any one of claims 20 to 24, wherein the blade is mounted on a cutter disc of the lawn mower, and the blade includes a blade body and a cutting portion arranged on at least one of the two sides of the blade body.

30. The blade assembly according to claim 29, characterized in that The blade and the protective member are integrally formed together.

31. A lawn mower, characterized in that: include: body; A cutter disc assembly is arranged on the machine body, and the cutter disc assembly comprises a cutter disc and a blade arranged on the cutter disc and having a cutting portion; A protective member is disposed on the cutter disc assembly and rotates with the cutter disc to prevent the cutting portion of the blade from being accidentally touched, and at least a portion of the side edge of the cutting portion is exposed outside the protective member to facilitate cutting; The blade includes a blade body and the cutting portion arranged on at least one of the two sides of the blade body, and the protective member includes at least one blocking portion for preventing accidental contact with the cutting portion, and the blocking portion at least covers a portion of the cutting portion and the outermost edge on the same side of the cutting portion protrudes from the side edge of the cutting portion.

Images