CN214757920U - Grass cutter - Google Patents

Abstract

The utility model provides a mower. This lawn mower includes: a housing; the movable upper cover is positioned above the shell; the control assembly is positioned in the shell; and the control assembly is suitable for controlling the mower to work.

Description

Grass cutter

Technical Field

The utility model relates to a mower.

Background

The mower is a mechanical tool for trimming lawns, vegetations and the like, and the engine is utilized to drive the blade to rotate at a high speed, so that the weeding speed is greatly improved, the operation time of weeding workers is greatly saved, and a large amount of manpower resources are reduced. The intelligent lawn mower is a robot for maintaining a lawn, has the advantages of intellectualization, modernization, environmental protection, liberation of hands and the like, and is more and more favored by markets and consumers. However, when the intelligent mower is used, tires of the intelligent mower can slip, so that the intelligent mower cannot normally run.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lawn mower.

In order to achieve the above object, the utility model provides a mower, include: a housing; the movable upper cover is positioned above the shell; the control assembly is positioned in the shell; and the control assembly is suitable for controlling the mower to work.

As a further improvement of the present invention, the mower further comprises a detecting mechanism located between the housing and the movable upper cover to detect the relative displacement between the movable upper cover and the housing; the control component is suitable for adjusting the working state of the mower according to the detection result; wherein the detecting mechanism comprises: at least one suspension lifting detection assembly positioned on the machine shell to detect the relative displacement of the movable upper cover and the machine shell in the vertical direction; at least one collision detection component, which is positioned on the machine shell and is used for detecting the relative displacement of the movable upper cover and the machine shell in the horizontal direction; and the control component is suitable for adjusting the working state of the mower according to each detection signal.

As a further improvement of the utility model, hang and promote the determine module and include: the suspension ball head is fixed on a movable upper cover of the mower; the lifting limiting part is separately arranged below the suspension ball head; the two ends of the suspension spring are respectively fixedly connected with the suspension ball head and the lifting limiting piece; the signal trigger module is positioned at the bottom of the lifting limiting part; and when the movable upper cover and the shell generate relative displacement in the vertical direction, the suspension ball head pulls the lifting limiting piece to move upwards through the suspension spring, and the signal triggering module is induced to send a detection signal to the control assembly.

As a further improvement of the present invention, the signal trigger module includes: the first magnetic block is fixed at the lower end of the lifting limiting part, the first lifting detection plate is positioned below the lifting limiting part, and the first reed switch is positioned on the first lifting detection plate; when the lifting limiting part moves upwards, the first magnetic block is far away from the first reed pipe, and the first reed pipe is opened or closed, so that a current signal on the first lifting detection plate is changed; and the first lifting detection plate is electrically connected with the control assembly so as to send the current signal to the control assembly as a detection signal.

As a further improvement of the present invention, the lifting position-limiting member is a hollow rod, and a lifting position-limiting member slot is formed in a side surface of the lifting position-limiting member; the signal trigger module further comprises: the magnet bracket is positioned in the hollow interior of the lifting limiting part; the magnet bracket is hung in the lifting limiting part clamping groove through an ear; and the first magnetic block is fixed at the bottom of the magnet bracket.

As a further improvement of the present invention, the collision detecting assembly includes: the second magnetic block is positioned on the movable upper cover; the second reed switch is positioned on the shell and below the second magnetic block; the second lifting detection plate is positioned between the second magnetic block and the second reed pipe; when the movable upper cover and the shell generate relative displacement in the horizontal direction, the second magnetic block is close to or far away from the second reed pipe, and the second reed pipe is opened or closed, so that a current signal on the second lifting detection plate is changed; and the second lifting detection plate is electrically connected with the control assembly so as to send the current signal to the control assembly as a detection signal.

As a further improvement of the present invention, the mower further comprises a cutting mechanism located on the housing; the cutting mechanism includes: the prime motor is positioned in the shell and used for driving the cutter head to rotate; the cutter head auxiliary height-adjusting assembly is fixedly arranged on an output shaft of the prime motor; the cutter head is positioned at the bottom of the auxiliary height-adjusting component of the cutter head and used for mounting the blades; and the auxiliary height-adjusting assembly of the cutter head is suitable for adjusting the height of the cutter head.

As a further improvement of the utility model, the supplementary subassembly of increaseing of blade disc includes: at least two cutter head connectors are movably sleeved from inside to outside in sequence; the first cutter head connector is positioned at the innermost side and fixedly arranged on an output shaft of the prime mover; the second cutter head connector is positioned on the outermost side and used for connecting the cutter head; and the adjusting piece is used for driving the second cutter head connector to move along the surface of the first cutter head connector so as to adjust the height of the cutter head.

As a further improvement of the present invention, the first blade disc connector includes: a hollow first body; at least one first guide groove which is respectively arranged at the outer side of the first body; and the first body is tightly sleeved on the outer side of the output shaft of the prime motor in a matching manner, and the adjacent cutter head connector on the outer side of the first body is guided to move by the first guide groove.

As a further improvement of the present invention, the second cutter head connector includes: a hollow second body; at least one second guide portion protruding from the second body; the opening end is positioned at one end of the second body and is used for sleeving the cutter head connector on the inner side; the closed end is positioned at the other end of the second body and is used for installing the adjusting piece; and the second guide part is matched with the guide groove adjacent to the inner side so as to guide the second cutter head connector to move along the cutter head connector adjacent to the inner side.

As a further improvement of the present invention, at least one third cutter head connector is further provided between the first cutter head connector and the second cutter head connector; the third cutter head connector includes: a hollow third body; at least one raised third guide part which is positioned at the inner side of the third body and is matched with the guide groove adjacent to the inner side of the third body; and at least one third guide groove which is positioned at the outer side of the third body and is matched with the guide part adjacent to the outer side of the third body.

As a further improvement of the present invention, the adjusting member comprises an auxiliary height-adjusting rod; the mounting end of the auxiliary height-adjusting rod is abutted against the output shaft end of the prime motor, and the adjusting end of the auxiliary height-adjusting rod penetrates through each cutter head connector and is in threaded connection with the cutter head; and the auxiliary height-adjusting rod is rotated, and the cutter head drives the second cutter head connector to move.

As a further improvement of the present invention, a spring washer is further provided between the output shaft end of the auxiliary heightening rod and the prime mover.

As a further improvement of the present invention, the housing includes: an internally sealed housing; the functional hole is formed in the shell and is communicated with the inside and the outside of the shell; and a function module selectively detachably installed at the function hole to detect a sealing state of the case or maintain air pressure balance inside and outside the case.

As a further improvement of the utility model, the functional module is an air filter cover to balance the air pressure inside and outside the housing of the mower in the working state; the air filter cover comprises: a base adapted to be mounted at the functional hole; an air filter cover mounting part extending outward from the base part; and the air filter cover mounting part is fixed with the shell through a fastening piece.

As a further improvement of the utility model, the functional module is an airtight charging nozzle which is matched with a barometer to detect the air tightness inside the housing of the mower in a non-working state; the airtight nozzle includes: a body part installed at the functional hole; an assembling part extending from the main body part to the outside; the body part is provided with an inflation tube which protrudes outwards and is connected with the barometer; the extending direction of the assembling part is vertical to the extending direction of the charging pipe.

As a further improvement of the utility model, the mower further comprises a walking component for driving the mower to move; the walking assembly comprises: at least one traveling wheel positioned on the housing; at least one universal wheel located on the housing; wherein the walking wheel includes: a hub; a wheel cover located on the wheel hub; and a wheel cover decoration piece detachably mounted on the wheel cover.

As a further improvement of the utility model, a plurality of wheel cover mounting holes are arranged in the circumferential direction of the wheel cover; the wheel trim includes: the middle part and a plurality of convex parts extending outwards from the middle part along the circumferential direction; and the bulges are nested in the corresponding wheel cover mounting holes; the projection includes: the decoration block is matched with the wheel cover mounting hole; the flange is positioned on one side of the decorative block and protrudes out of the decorative block; and when the protruding parts are nested in the corresponding wheel cover mounting holes, the decoration blocks are clamped in the corresponding wheel cover mounting holes to be exposed from the outer sides of the wheel covers, and the flanges are abutted to the peripheries of the wheel cover mounting holes.

As a further improvement of the utility model, the wheel cover is detachably mounted on the wheel hub through a fastener; wherein the fastener includes: the clamping heads are uniformly distributed on the circumference of the wheel cover; and the plurality of hub clamping grooves are uniformly distributed on the circumference of the hub and are matched with the corresponding clamping heads.

As a further improvement of the utility model, the wheel cover and the wheel hub are positioned and installed through at least two asymmetrically arranged positioning pieces; wherein the positioning member comprises: the positioning rod is positioned on the circumference of the wheel cover; and the hub positioning hole is positioned on the circumference of the hub and is matched with the positioning rod.

The utility model has the advantages that: the utility model discloses a lawn mower detects the relative displacement of activity upper cover and casing through surveying the mechanism, then the operating condition of control assembly according to testing result adjustment lawn mower.

Drawings

Fig. 1 is a perspective view of a top view of the lawn mower of the present invention.

Fig. 2 is a bottom perspective view of the lawnmower.

Fig. 3 is a side view of the mower (without the main body lid and the movable upper cover).

Fig. 4 is a sectional view a-a in fig. 1.

Figure 5 is an exploded view of the cutterhead auxiliary elevation assembly.

Figure 6 is a cross-sectional view of the cutterhead auxiliary elevation assembly.

Figure 7 is a top view of the cutterhead auxiliary elevation assembly.

Figure 8 is a bottom perspective view of the cutterhead auxiliary elevation assembly.

Figure 9a is a schematic view of the cutterhead auxiliary elevation assembly lowering the cutterhead.

Figure 9b is a schematic view of the height adjustment impeller of the impeller assisted height adjustment assembly.

FIG. 10a is a perspective view of the first cutterhead connector from a top view.

FIG. 10b is a perspective view of the first cutterhead connector at a bottom angle.

Figure 11a is a top perspective view of the second cutterhead connector.

Figure 11b is a perspective view of the second cutterhead connector at a bottom angle.

Figure 12a is a top perspective view of the third cutterhead connector.

Figure 12b is a perspective view of the third cutterhead connector at a bottom angle.

Fig. 13 is a perspective view of the auxiliary heightening rod at a bottom view angle.

Fig. 14 is an enlarged view of a portion D in fig. 4.

Fig. 15a is a schematic view of the height of the cutterhead being adjusted down in the mower.

Fig. 15b is a schematic view of the height of the adjustment cutterhead in the mower.

Fig. 15c is a schematic view of the height of the raised deck in the mower.

Fig. 16 is a perspective view of a suspended lift detection assembly.

Fig. 17 is a cross-sectional view of a suspended lift detection assembly.

Fig. 18 is an enlarged view of a portion B in fig. 4.

Fig. 19 is an enlarged view of a portion C in fig. 4.

Fig. 20 is a perspective view of the air filter cover.

Fig. 21 is a top view of the air filter cover.

Fig. 22 is a bottom view of the air filter cover.

Fig. 23 is a front view of the air filter cover.

Fig. 24 is a perspective view of the airtight charging nozzle.

Fig. 25 is a top view of the airtight charging nozzle.

Fig. 26 is a bottom view of the airtight charging nozzle.

Fig. 27 is a front view of the airtight charging nozzle.

Fig. 28 is an exploded perspective view of the traveling wheel of the lawnmower.

Fig. 29 is a split view of the road wheel.

Fig. 30 is a perspective view of the front of the wheel arch trim.

Fig. 31 is a front view of the back of the wheel arch.

Fig. 32 is a cross-sectional view E-E of fig. 31.

FIG. 33 is a perspective view of the inside of the wheel cover.

FIG. 34 is an outside elevational view of the wheel cover.

Fig. 35 is a perspective view of the inside of the hub.

FIG. 36 is a perspective view of the outboard side of the hub.

FIG. 37 is an elevational view of the outboard side of the hub.

Fig. 38 is an assembly view of the grommet.

FIG. 39 is an assembled view of the positioning member.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1-4, the present invention discloses a lawn mower, comprising: a housing 10000; a movable upper cover 20000 positioned above the casing 10000; a control component located within the housing 10000; and the control assembly is suitable for controlling the mower to work.

Optionally, the movable upper cover 20000 is further provided with a main body flip 90000.

Optionally, the control assembly, such as but not limited to a single chip microcomputer or a processor module, may control each mechanism to operate through a corresponding driving circuit.

As an alternative embodiment of the cutting mechanism.

Referring to fig. 4, 5-15 c, the cutting mechanism 30000 comprises: a prime mover 32000, located within the housing 10000, for driving rotation of the cutter 34000; the cutter 34000 is positioned at the bottom of the auxiliary cutter height-adjusting assembly 33000 and is used for installing the blades 34100 (or blade installation positions); and the auxiliary height-adjusting assembly 33000 of the cutterhead is suitable for adjusting the height of the cutterhead 34000.

Alternatively, referring to fig. 4, 6 and 14, the auxiliary cutterhead height adjustment assembly 33000 is mounted on the output shaft of the prime mover 32000, for example, but not limited to, by a tight fit, and the bottom surface of the auxiliary cutterhead height adjustment assembly 33000 may be fitted with at least one mowing blade 34100 via the cutterhead 34000. In this embodiment, the number of the blades 34100 is three, and the blades are uniformly distributed on the circumference of the cutter 34000. However, in other embodiments, the number of blades 34100 can be varied as desired. A protective cover 34200 is further arranged below the cutter 34000.

Referring to fig. 5 to fig. 15c, the cutter head auxiliary height-adjusting assembly 33000 includes: at least two cutter head connectors are movably sleeved from inside to outside in sequence; wherein the first cutterhead connector 33100, located innermost, is fixedly mounted on the output shaft of the prime mover 32000; the second cutter head connector 33200 is positioned on the outermost side and is used for connecting the cutter head 34000; and an adjusting member 33300 for moving the second cutter head connector 33200 along the surface of the first cutter head connector 33100 to adjust the height of the cutter head 34000.

Optionally, the number of the cutter head connectors is at least two, and when the number of the cutter head connectors is two, the second cutter head connector 33200 is directly movably sleeved on the surface of the first cutter head connector 33100. When the number of the cutter head connectors is more than two, the rest cutter head connectors are third cutter head connectors, and all the third cutter head connectors are positioned between the first cutter head connector and the second cutter head connector and are movably sleeved from inside to outside in sequence. As shown in the drawings, the number of cutter deck connectors is three, but it is assumed that the number of cutter deck connectors is three in a narrow sense.

Referring to fig. 10 a-10 b, the first blade hub connector 33100 includes: a hollow first body 33110; at least one first guiding slot 33120 disposed outside the first body 33110; and the first body 33110 is tightly fitted around the outer side of the output shaft of the prime mover 32000 and guides the movement of the cutter head connector adjacent to the outer side thereof through the first guide slot 33120.

Optionally, the first body is hollow and cylindrical, and both ends of the first body are open, so that an output shaft of the prime mover 32000 and an auxiliary height-adjusting rod for installation are conveniently sleeved. The first guiding slots 33120 are uniformly distributed on the surface of the first body 33110, and the first guiding slots 33120 have the same height as the first body 33110, i.e., the first guiding slots 33120 are through slots.

Optionally, referring to fig. 10b, the lower end of the first body 33110 is further provided with at least one first mounting hole 33130 for mounting a first position-limiting member 33140. The first position-limiting member 33140, such as but not limited to a screw or a bolt, is threadedly mounted in the first mounting hole 33130; the wide head 33141 of the first stop 33140 protrudes beyond the slot end of the first guide slot to limit the guide portion fitted therein from sliding out, i.e., to limit the cutter head connector adjacent to the outside of the first cutter head connector from disengaging from the surface of the first cutter head connector. In the present case, when there are two cutter head connectors, the wide head of the first stopper 33140 is used to limit the second cutter head connector from disengaging from the surface of the first cutter head connector; the wide head 33141 of the first stop 33140 serves to limit the disengagement of the third cutterhead connector from the surface of the first cutterhead connector when there are at least three cutterhead connectors.

Referring to fig. 11 a-11 b, the second cutter head connector 33200 includes: a hollow second body 33210; at least one protruding second guide part 33220 disposed at an inner side of the second body 33210; an open end 33230 at one end of the second body 33210 for housing the inside cutter head connector; a closed end 33240 at the other end of the second body 33210 for mounting the adjustment member 33300; and the second guide portion 33220 is fitted with an inside-adjacent guide groove to guide the second cutter deck connector 33200 to move along the inside-adjacent cutter deck connector thereof.

Optionally, the second body is hollow and cylindrical, and one end of the second body is open (i.e., the open end 33230) so as to facilitate sleeving of a cutter head connector inside the second body, such as a first cutter head connector or a third cutter head connector; the other end is closed (i.e., closed end 33240) for mounting the cutterhead and the adjustment end of the auxiliary height adjustment bar. And the second guiding parts 33220 are uniformly distributed on the inner surface of the second body 33210; the second guide part 33220 includes at least one second long protrusion 33221 and at least one second short protrusion 33222 that are staggered; wherein the height of the second long protrusion 33221 is equal to the height of the second body 33210; the second short projection 33222 has a height that is less than the height of the second body 33210 and is positioned proximate the open end 33230 of the second body 33210 to cooperate with a corresponding stop to limit disengagement of the second cutterhead connector from the third cutterhead connector or the first cutterhead connector surface.

Optionally, referring to fig. 11b, the closed end of the second body 33210 is further provided with at least one cutter mounting hole 33250 to be fixedly mounted with the cutter 34000 by a fastener 33260. The cutter mounting hole 33250 is located at the bottom of the second long projection 33221.

Optionally, referring to fig. 5, at least one third cutter head connector 33400 is further disposed between the first cutter head connector 33100 and the second cutter head connector 33200. When one third cutter head connector 33400 is provided, that is, the number of cutter head connectors in the auxiliary cutter head height-adjusting assembly is three; when the number of the third cutter head connectors 33400 is at least two, that is, the number of the cutter head connectors in the auxiliary cutter head height-adjusting assembly is at least four, and the structures of the third cutter head connectors may be the same, but the sizes are different, so that the third cutter head connectors are movably sleeved from inside to outside in sequence.

12 a-12 b, the third cutter head connector 33400 includes: a hollow third body 33410; at least one protruded third guide part 33420 positioned at an inner side of the third body 33410 and fitted into a guide groove adjacent to the inner side thereof; and at least one third guide groove 33430 located at an outer side of the third body 33410 and adapted to the guide part adjacent to the outer side thereof.

Optionally, the third body is hollow and cylindrical, and both ends of the third body are provided with openings, so that the cutter head connector on the inner side of the third body can be conveniently sleeved with the third body. The third guide grooves 33430 are uniformly distributed on the surface of the third body 33410, and the third guide grooves 33430 are equal in height to the third body 33410, that is, the third guide grooves 33430 are through grooves. And the third guiding parts 33420 are uniformly distributed on the inner surface of the third body 33410; the third guide part 33420 includes at least one third long protrusion 33421 and at least one second short protrusion 1422 that are staggered; wherein the third long protrusion 33421 has a height equal to that of the third body 33410; the third short projection 33422 has a height less than the height of the third body 33410 and is positioned adjacent the lower end of the third body 33410 to cooperate with a corresponding stop to limit the disengagement of the second or other third cutterhead connector from the third cutterhead connector surface. In the present case, the third guide portions and the third guide grooves may be in one-to-one correspondence and are disposed at inner and outer sides of the third body. Of course, the third guide portions and the third guide grooves may be alternatively arranged as long as the assembling requirements are met.

Optionally, referring to fig. 8 and 12b, the lower end of the third body 33410 is further provided with at least one third mounting hole 33440 for mounting a third limiting member 33450; the third mounting hole 33440 is located at the bottom of the third long protrusion 1221. The third limiting member 33450, such as but not limited to a screw or a bolt, may be the same as or different from the first limiting member, and is installed in the third installation hole 33440 by a screw thread; wherein the wide head portion 33451 of the third retaining member 33450 protrudes beyond the channel end of the third guide channel 33430 to limit the sliding out of the guide portion fitted thereto, i.e., to limit the disengagement of the cutterhead connector adjacent to the outside of the third cutterhead connector from the surface of the third cutterhead connector. In the present case, as shown in fig. 5, the wide head 33141 of the first restraint 33140 serves to restrain the first cutterhead connector 33100 from disengaging from the surface of the third cutterhead connector 33400; when there are three cutterhead connectors, the wide head portion 33451 of the third retaining member 33450 serves to retain the second cutterhead connector 33200 from disengaging from the surface of the third cutterhead connector 33400 from the bottom; when the number of the cutter deck connectors is at least four, the wide head portion 33451 of the third retaining member 33450 serves to restrict the cutter deck connector outside thereof from coming off the surface of the third cutter deck connector.

Referring to fig. 6 and 13, the adjusting member 33300 includes an auxiliary elevation rod 33310; the mounting end 33311 of the auxiliary height-adjusting rod 33310 abuts against the output shaft end of the prime mover 32000, and the adjusting end 33312 of the auxiliary height-adjusting rod penetrates through each cutterhead connector and is in threaded connection with the cutterhead 34000; and the auxiliary height adjusting rod 33310 is rotated, and the cutter 34000 drives the second cutter connector 33200 to move. And a closed end 33240 of the second body is provided with a cutter head connector through hole 33270 so as to be suitable for the auxiliary height-adjusting rod 33310 to penetrate and extend out. Of course, the closed end 33240 of the second body may be provided with other structural holes 33280 for assembling or observing or weight reduction.

Optionally, referring to fig. 5 and 13, the mounting end 33311 of the auxiliary height-adjusting rod 33310 is clamped in the first body 33110 by a first stopper 33140; an adjusting groove 33313 is formed in the adjusting end 33312 of the auxiliary height-adjusting rod 33310; and the cutter 34000 is provided with a threaded through hole 34200 suitable for the movement of the adjusting end 33312.

Optionally, as shown in fig. 6, a spring washer 33500 is further disposed between the auxiliary height adjusting rod 33310 and the output shaft end of the prime mover 32000.

In this case, the process of adjusting the height of the cutter head by the cutter head auxiliary height-adjusting assembly is as follows, which can be summarized as the following two cases, but other possible embodiments of adjusting the height of the cutter head by the cutter head auxiliary height-adjusting assembly should also be within the scope of the present application.

(1) The process of adjusting the height of the cutter head through the two cutter head connectors is as follows: the auxiliary height adjusting rod 33310 can be manually or in other manners, for example, a tool such as a screwdriver is clamped into the adjusting groove 33313, and the auxiliary height adjusting rod 33310 is rotated, so that the cutter head is driven to ascend or descend by the auxiliary height adjusting rod 33310 during rotation, and the cutter head drives the second cutter head connector to move along the first cutter head connector, thereby completing the height adjusting action of the cutter head. The adjustment process of the cutter head and the movement process of the cutter head connector are both simple and will not be illustrated for the moment.

(2) Because the process of adjusting the height of the cutterhead by three or more cutterhead connectors is similar, the height adjusting action of the cutterhead is explained by taking the number of the cutterhead connectors as three as an example, and the specific adjusting process is as follows: as shown in fig. 10a to 10b or fig. 15a to 15c, a first cutter head connector 33100, a third cutter head connector 33400 and a second cutter head connector 33200 are movably sleeved from inside to outside in sequence. To facilitate the adjustment of the cutter head, (1) assuming that the cutter head 34000 is initially at the lowest height (as shown in fig. 15 a), the first position-limiting member 33140 is installed in the first installation hole 33130, and the wide head 33141 of the first position-limiting member 33140 protrudes out of the first guide slot 33120 and abuts against the bottom of the third short protrusion 33422 to limit the third cutter head connector from being disengaged from the outside of the first cutter head connector 33100; the wide head 33141 of the first stopper 33140 also protrudes out of the hollow of the first body 33110 and abuts against the bottom of the mounting end 33311 of the auxiliary height-adjusting rod 33310 to prevent the auxiliary height-adjusting rod 33310 from being disengaged from the inside of the first blade hub connector 33100. The third stopper 33450 is installed in the third installation hole 33440, and the wide head 33451 of the third stopper 33450 protrudes out of the third guide groove 33430 and abuts against the bottom of the second short protrusion 1222 to restrict the second cutterhead connector 33200 from being disengaged from the outside of the third cutterhead connector 33400. (2) The auxiliary height adjusting rod 33310 is rotated in the manner described above, so that the auxiliary height adjusting rod 33310 drives the cutter 34000 to ascend when rotating, and at the moment, the cutter 34000 drives the second cutter connector 33200 to move along the surface of the third cutter connector 33400, so as to improve the height of the cutter from the ground. (3) When the closed end 33240 (bottom end) of the second cutter head connector 33200 abuts against the third position-limiting member 33450 or the bottom of the third body 33410, the second cutter head connector 33200 is completely sleeved outside the third disk connector 33400. (4) The second cutter head connector 33200 continues to move upward, the third cutter head connector 33400 is driven by the second cutter head connector 33200 to move along the surface of the first cutter head connector 33100 (as shown in fig. 15 b), the ground clearance of the cutter head continues to be increased until the third cutter head connector 33400 is completely sleeved outside the first cutter head connector 33100, at this time, the first cutter head connector 33100, the third cutter head connector 33400 and the second cutter head connector 33200 are completely sleeved from inside to outside in sequence, the closed end of the second cutter head connector 33200 abuts against the bottom of the first cutter head connector 33100, and the cutter head 34000 is adjusted to a higher position.

As an alternative embodiment of the detection means.

As shown in fig. 3, 4, 16-19, the mower further comprises a detecting mechanism located between the housing 10000 and the movable upper cover 20000 to detect the relative displacement between the movable upper cover 20000 and the housing 10000; the control component is suitable for adjusting the working state of the mower according to the detection result; wherein the detecting mechanism 40000 comprises: at least one suspension lifting detection component 41000, located on the cabinet 10000, for detecting the relative displacement of the movable upper cover 20000 and the cabinet 10000 in the vertical direction; at least one collision detecting assembly 42000, provided on the housing 10000, for detecting a relative displacement of the movable upper cover 20000 and the housing 10000 in a horizontal direction; and the control component is suitable for adjusting the working state of the mower according to each detection signal.

Optionally, the control assembly may include a processor, various control circuits, a sensing unit and a corresponding driving circuit, etc., and may detect a current signal change to control the mower to stop or work.

Optionally, referring to fig. 3 and 4, two suspension lifting detection assemblies 41000 are provided, and are respectively arranged at the diagonal positions of the cabinet 10000 through first installation positions 21000 on the movable upper cover 20000; optionally, the number of the suspension lifting detection assemblies 41000 is four, and the first installation positions 21000 on the movable upper cover 20000 are respectively arranged at the corners of the cabinet 10000. And the number of the collision detection assemblies 42000 is two, and the two collision detection assemblies are respectively arranged at two ends of the casing 10000 through second mounting positions 22000 on the movable upper cover 20000. Of course, the number of the suspension lifting detection assemblies and the collision detection assemblies can be adjusted according to the vehicle type and the structural requirements, and the distribution positions of the suspension lifting detection assemblies and the collision detection assemblies on the shell can be changed.

As shown in fig. 4, 16, and 17, the hanging lift detection assembly 41000 includes: a hanging ball head 41100 fixed on a movable upper cover of the mower; a lifting limiting piece 41200 which is separately arranged below the suspension ball head 41100; a suspension spring 41300, both ends of which are fixedly connected with a suspension ball 41100 and a lifting limit piece 41200 respectively; a signal trigger module 41400 located at the bottom of the lift limiting member 41200; when the suspension ball 41100 moves upward, the suspension spring 41300 pulls the lift limiting member 41200 to move upward, and the inducing signal triggers the module 41400 to send a detection signal.

Specifically, in this embodiment, see fig. 18, a spherical joint 41110 is provided on a side surface of the suspension ball 41100, so as to fix the suspension ball 41100 on a movable upper cover 20000 of the lawn mower by a snap-in fastener; two ends of the suspension spring 41300 are fixedly connected with the suspension ball 41100 and the lifting limit piece 41200 through threads respectively. When the movable top cover of the lawn mower moves upward, the suspension ball 41100 is driven to move upward, and at this time, the suspension spring 41300 pulls the lift limiting member 41200 to move upward, so as to trigger the module 41400 to send a detection signal. In addition, the top of hanging bulb 41100 is also provided with a limiting groove 41111, which is used in cooperation with a limiting column on the movable upper cover, so that horizontal shaking generated between the hanging bulb and the movable upper cover can be avoided.

In the present case, the suspension spring is the spring that rigidity is great, is difficult to produce great deformation in the vertical direction, both can satisfy the requirement that suspension spring 41300 pulling promoted locating part 41200 upward movement, can make suspension spring can also play the effect of horizontal damping again, also can make hang and allow to have certain relative displacement in the horizontal direction between bulb and the promotion locating part, when the lawn mower produced the collision, can not damage and hang and promote the detection components or produce the wrong report and police. Of course, in other embodiments, the suspension spring may also be fixedly connected to the suspension ball 41100 and the lift-limiting member 41200 by a snap or a pin lock.

Optionally, in this case, as shown in fig. 18, the signal triggering module 41400 includes: a first magnet 41410 fixed to a lower end of the lift limiting member 41200, a first lift detecting plate 41420 positioned below the lift limiting member 41200, and a first reed pipe 41430 positioned on the first lift detecting plate 41420; when the lift limiter 41200 moves upward, the first magnetic block 41410 moves away from the first reed pipe 41430, and the first reed pipe 41430 opens or closes, so that the current signal of the first lift detection plate 41420 changes, that is, the signal trigger module sends out the detection signal. And the first lifting detection plate and the second lifting detection plate, such as but not limited to Hall plates, are electrically connected with the control assembly.

Optionally, the first reed switch is located right below the first magnetic block.

Optionally, referring to fig. 16, the hanging and lifting detection assembly further includes a hanging fixed bellows 41500 sleeved outside the hanging spring 41300; one end of the hanging fixed corrugated sleeve 41500 is clamped on the hanging ball head 41100, and the other end of the hanging fixed corrugated sleeve 41600 is fixedly arranged on a shell 10000 of the mower through a hanging fixed frame 41600; when the lifting limiting member moves upwards, the hanging fixed corrugated sleeve 41500 is stretched, so that the reset pulling force can be generated, and the sealing protection effect can be achieved. Of course, in order to increase the restoring force of the suspension and lifting detection assembly, the suspension and lifting detection assembly 41000 for a mower further comprises a suspension and restoring spring 41700 sleeved outside the lifting limit piece 41200; two ends of the suspension return spring 41700 respectively abut against the bottoms of the suspension fixing frame 41600 and the lifting limiting piece 41200; when the lifting limiting part moves upwards, the hanging fixing frame 41600 is kept still, so that the distance between the bottoms of the lifting limiting part of the hanging fixing frame 41600 is reduced, the hanging return spring 41700 is compressed to generate return elastic force, and the hanging lifting detection assembly is reset after the mower stops working, so that the phenomenon that the mower is jammed is avoided.

Optionally, referring to fig. 17, the lifting position-limiting member 41200 may be a hollow rod, and a lifting position-limiting member slot 41210 is disposed on a side surface of the hollow rod; the signal trigger module 41400 further includes: a magnet holder 41440 positioned within the hollow interior of the lift limiter 41200; the magnet bracket 41440 is suspended in the lifting limiting part clamping groove 41210 through ears; the first magnetic block 41410 is fixed at the bottom of the magnet holder 41440, so that the first magnetic block 41410 is ensured to be fixed at the bottom end of the hollow interior of the lifting limiting member 41200, meanwhile, the bottom of the lifting limiting member 41200 is provided with a lifting limiting member flange 41220 extending outwards, and the outer diameter of the lifting limiting member flange 41220 is larger than the inner diameter of the suspension fixing frame 41600, so that the lifting limiting member flange 41220 can limit the stroke of the first magnetic block 41410 in the vertical direction, and the overall stability of the suspension lifting detection assembly is ensured.

Referring to fig. 4 and 18, the collision detection assembly 42000 includes: the second magnetic block 42100 is positioned on the movable upper cover 20000; a second reed switch 42200 which is positioned on the casing 10000 and is positioned below the second magnetic block 42100; a second lift detection plate 42300 positioned between the second magnet 42100 and the second reed pipe 42200; when the movable upper cover 20000 and the casing 10000 generate relative displacement in the horizontal direction, the second magnetic block 42100 is close to or away from the second reed pipe 42200, and the second reed pipe 42200 is opened or closed, so that the current signal on the second lifting detection plate 42300 is changed; and the second lift detection plate 42300 is electrically connected with the control assembly to send the current signal as a detection signal to the control assembly.

Optionally, the second reed switch is located right below the second magnetic block.

Referring to fig. 18, the collision detection assembly 42000 further includes: the magnetic block bracket 42400 is fixed on the movable upper cover 20000, the magnetic block bracket 42400 is in a magnetic sheet shape, for example, an iron sheet is used for attracting the second magnetic block 42100, so that a certain gap is left between the second magnetic block 42100 and the second reed pipe 42200.

As an alternative embodiment of the housing.

As shown in fig. 3, 20 to 27, the housing 10000 includes: an internally sealed housing 11000; a function hole or a function mounting position (shielded by the air filter 12000, not shown) provided on the housing 11000, communicating the inside and outside of the housing 11000; and a function module selectively detachably installed at the function hole to detect a sealing state of the case or maintain air pressure balance inside and outside the case.

Alternatively, referring to fig. 20-23, when the functional module is an air filter 12000, the air pressure inside and outside the housing 11000 can be balanced when the mower is in operation. The air filter cover 12000 includes an air permeable base portion 12100 installed at the functional hole, and an air filter cover installation portion 12200 extending outward from the air permeable base portion 12100. The air permeable base portion 12100 is provided with corresponding air permeable holes 12110, which can be made of air permeable material to achieve the air permeable purpose. The two air filter cover installation portions 12200 are provided, and the two air filter cover installation portions 12200 extend from the air permeable base portion 12100 in two opposite directions, respectively, so as to be symmetrically provided on both sides of the air permeable base portion 12100. The air filter cover 12000 mechanically fixes the air filter cover mounting portion 12200 and the housing 11000 by a fastener. The fastener may be any suitable component such as a screw, bolt, or snap-fit, without limitation. Optionally, the air filter cover mounting portion 12200 is provided with a corresponding air filter cover mounting hole 12210, so that the air filter cover mounting portion 12200 and the housing 11000 are mechanically fixed by screws.

Optionally, referring to fig. 23, a stud 12220 is further disposed on an installation inner side (a side close to the housing) of the air filter cover 12000, and the stud 12220 is located at an edge of the air filter cover installation portion 12200 and is adapted to a hole on the housing, so as to limit the air filter cover 12000 when installed. Referring to fig. 36, the air filter housing mounting portion 12200 is provided with a slope on the mounting outer side (the side away from the housing) of the air filter housing 12000, and the air permeable base portion 12100 gradually protrudes out of the housing when the air filter housing 12000 is completely mounted.

Alternatively, referring to fig. 24-27, when the functional module is an airtight charging nozzle 13000, an air pressure gauge may be used to detect the airtightness of the casing. The airtight charging nozzle 13000 comprises a body part 13100 installed at the functional hole and an assembling part 13200 extending outward from the body part 13100. The two assembling portions 13200 are provided, and the two assembling portions 13200 extend from the main body 13100 in two opposite directions to be symmetrically provided at both sides of the main body. On the outside of the body 13100 (the side away from the body), see fig. 27, an outwardly protruding inflation tube 13300 is provided to connect with the barometer to detect the air tightness of the mower. The extending direction of the assembling portion 13200 is perpendicular to the extending direction of the filling pipe 13300. The airtight charging nozzle 13000 mechanically fixes the assembly portion 13200 and the housing 11000 by a fastener (not shown). The fasteners may be suitable components such as screws, bolts, etc., without limitation. Optionally, as shown in fig. 39, the assembling portion 13200 is provided with a corresponding assembling hole 13210, so that the assembling portion 13200 and the housing 11000 are mechanically fixed by screws. And the outside (the side away from the housing) of said assembling portion 13200 is provided with a slope, which causes the body portion 13100 to gradually protrude out of the housing when the airtight nozzle 13000 is completely mounted.

In the present case, can be through artifical or other modes in function hole department installs different functional module to conveniently detect sealed state or realize that the inside and outside atmospheric pressure of casing 11000 is balanced, satisfy the functional requirement of lawn mower at different operating condition. As in the operating state, the mower uses the air filter shroud 12000 to balance the air pressure inside the housing 11000 of the mower with the outside; for another example, when the air tightness needs to be detected, the air filter 12000 is replaced by the air-tight inflation nozzle 13000, then a rubber tube is sleeved on the inflation tube 13300 of the air-tight inflation nozzle 13000, and whether the upper limit of the inflation pressure and the pressure maintaining capability meet the standard is detected by a pressure gauge, so that whether the sealing is reliable or not can be detected.

As an alternative embodiment of the walking assembly.

Referring to fig. 1, 2, 28-39, the mower further comprises a walking assembly 80000 for driving the mower to move; the walking assembly 80000 comprises: at least one road wheel 81000 (i.e., a driving wheel) located on the housing 10000; at least one universal wheel 82000 positioned on the housing 10000; the walking wheel 81000 further comprises: a wheel cover 81400 located on the hub 81200; and a wheel cover garnish 81500 detachably mounted on the wheel cover 81400.

Alternatively, as seen in fig. 29, the wheel cover 81400 is removably attached to the hub 81200; and the wheel cover decoration 81500 is clamped between the wheel hub 81200 and the wheel cover 81400. In replacing the wheel cover trim 81500, the wheel cover 81400 can be removed from the hub 81200, a new wheel cover trim 81500 can be attached to the wheel cover 81400, and the wheel cover 81400 can be attached to the hub 81200. Can realize the problem of matching colors of walking wheel change through changing the wheel cap gadget alone.

As an implementable assembly of the wheel cover trim.

As shown in fig. 30 to 32, the wheel covering trim 81500 includes: a middle portion 81510, a number of tabs 81520 extending circumferentially outward from the middle portion 81510; and the tab 81520 nests within a corresponding wheel cover mounting aperture 81410.

Optionally, referring to fig. 30, the middle portion 81510 is a ring and is coaxially disposed with the hub 81200 and the wheel cover 81400. The protruding portion 81520 includes: a decorative block 81521 fitted with the wheel cover mounting hole 81410; the rib 81522 is positioned on one side of the decorative block 81521 and protrudes out of the decorative block 81521; and when the protrusion 81520 is nested in the corresponding wheel cover mounting hole 81410, the decoration block 81521 is clamped in the corresponding wheel cover mounting hole 81410 to be exposed from the outer side of the wheel cover 81400, and the rib 81522 is abutted against the periphery of the wheel cover mounting hole 81410.

Specifically, as shown in fig. 31 and 32, the back surface (i.e., the side close to the wheel hub) of the wheel cover decoration is planar, and the front surface (i.e., the side close to the wheel cover) of the wheel cover decoration protrudes through the decoration block 81521 so as to be clamped into the wheel cover installation hole. In order to reduce the weight of the decoration block, a weight reduction groove 81523 is formed in the back surface of the decoration block 81521, see fig. 32; and the front of decorating piece 81521 is equipped with the color matching groove, and the tank bottom of color matching groove is equipped with corresponding look board 81524, can make the look board cave in the color matching groove, avoids the look board to be worn out and fades, plays the effect of protection look board. Of course, the color plate 81524 can be designed separately or integrally with the color matching groove to ensure consistent color.

Referring to fig. 33 and 34, a plurality of wheel cover mounting holes 81410 are opened in the circumferential direction of the wheel cover 81400 to nest the protrusions 81520 in the wheel cover trim 81500. An inner protrusion 81420 (located on the inner side of the wheel cover 81400, i.e., on the side close to the wheel cover trim) and an outer groove 81430 (located on the outer side of the wheel cover 81400, i.e., on the side away from the wheel cover trim in fig. 7) are further designed at the interval between the wheel cover mounting holes 81410, and a clip 81440 is arranged at the edge of each inner protrusion 81420 to be clamped with the wheel hub 81200. Specifically, the inner protrusion 81420 and the outer groove 81430 can be designed in the same shape structure or in different shapes and structures, but the inner protrusion 81420 and the outer groove 81430 cannot form a through hole, so that the wheel cover is covered on the outer side of the travelling wheel, and the sealing performance of the inner structure of the travelling wheel is guaranteed.

35-37, the inner side (side near the housing) of the hub 81200 is planar to accommodate the overall assembly requirements of the mower; a wheel cover mounting position 81270 is arranged on the outer side (the side close to the wheel cover ornament) of the wheel hub 81200 and is used for mounting a wheel cover; a plurality of ribs 81250 are provided in the wheel cover mounting locations 81270 to support the wheel hub.

Further, as shown in fig. 38, a plurality of hub engaging grooves 81271 are formed in the wheel cover mounting location 81270, and each hub engaging groove 81271 is uniformly distributed on the circumference of the wheel hub 81200 to form a locking member with the locking head 81440 on the wheel cover 81400, so that the wheel cover is detachably mounted on the wheel hub through the locking member.

In addition, as shown in fig. 39, the wheel cover 81400 and the wheel hub 81200 are positioned and installed by at least two positioning members which are arranged asymmetrically; wherein the positioning member comprises: a positioning lever 81450 located on the circumference of the wheel cover 81400; and the hub positioning holes 81280 are located on the circumference of the hub 81200, are matched with the positioning rods 81450, are clamped into the corresponding hub positioning holes 81280 through the positioning rods 81450, position the wheel cover 81400 and the hub 81200, and are assembled.

In summary, the control assembly, such as but not limited to a single chip microcomputer or a processor module, can control each mechanism to perform different working processes through a corresponding driving circuit. For example, the airtightness of the machine shell can be detected through the airtight nozzle on the machine shell, and then the air filter cover is replaced, so that the air pressure balance in the machine shell is maintained in the working process of the mower, and the normal working state of the mower is ensured. For another example, the height of the cutter head is adjusted by a cutter head auxiliary height-adjusting assembly in the cutting mechanism, and then the prime motor is controlled by a control assembly to rotate, so that the cutter head is driven to rotate, and the mowing action is carried out by the blades. For another example, in the working or walking process of the mower, the relative displacement of the movable upper cover and the machine shell in the vertical direction is detected through a suspension lifting detection assembly in the detection mechanism, so that when the relative displacement of the movable upper cover and the machine shell in the vertical direction occurs, a current signal change is formed and is transmitted to the control module or a current sensor connected with the control module, and the working state of the mower (such as the mowing stopping action or the walking stopping action) is further regulated and controlled; in the working or walking process of the mower, the relative displacement of the movable upper cover and the machine shell in the horizontal direction is detected through a collision detection assembly in the detection mechanism, so that when the relative displacement of the movable upper cover and the machine shell in the horizontal direction occurs, a current signal change is formed and is transmitted to the control module or a current sensor connected with the control module, and the working state (such as mowing stopping or walking stopping) of the mower is further regulated and controlled; hang and promote the independent setting of determine module and collision determine module, detect the relative displacement of activity upper cover and casing in horizontal direction, vertical direction respectively, can effectively reduce the condition of spurious triggering. For another example, the wheel cover ornaments can be detachably replaced on the walking wheels, so that the problem of color matching of the walking wheels can be solved. In the scheme, the working processes can be implemented independently or in a combined manner, so that the mower can meet different functions or design requirements.

The above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present invention.

Claims (19)

1. A lawn mower, comprising:

a housing; the movable upper cover is positioned above the shell; the control assembly is positioned in the shell; and

the control assembly is suitable for controlling the mower to work;

the mower also comprises a detection mechanism positioned between the machine shell and the movable upper cover so as to detect the relative displacement of the movable upper cover and the machine shell; the control component is suitable for adjusting the working state of the mower according to the detection result; wherein the content of the first and second substances,

the detection mechanism comprises: at least one suspension lifting detection assembly positioned on the machine shell to detect the relative displacement of the movable upper cover and the machine shell in the vertical direction; at least one collision detection component, which is positioned on the machine shell and is used for detecting the relative displacement of the movable upper cover and the machine shell in the horizontal direction; and the control component is suitable for adjusting the working state of the mower according to each detection signal.

2. The mower of claim 1,

the suspended lift detection assembly comprises: the suspension ball head is fixed on a movable upper cover of the mower; the lifting limiting part is separately arranged below the suspension ball head; the two ends of the suspension spring are respectively fixedly connected with the suspension ball head and the lifting limiting piece; the signal trigger module is positioned at the bottom of the lifting limiting part; and when the movable upper cover and the shell generate relative displacement in the vertical direction, the suspension ball head pulls the lifting limiting piece to move upwards through the suspension spring, and the signal triggering module is induced to send a detection signal to the control assembly.

3. The mower of claim 2,

the signal trigger module includes: the first magnetic block is fixed at the lower end of the lifting limiting part, the first lifting detection plate is positioned below the lifting limiting part, and the first reed switch is positioned on the first lifting detection plate; when the lifting limiting part moves upwards, the first magnetic block is far away from the first reed pipe, and the first reed pipe is opened or closed, so that a current signal on the first lifting detection plate is changed; and the first lifting detection plate is electrically connected with the control assembly so as to send the current signal to the control assembly as a detection signal.

4. The mower of claim 3,

the lifting limiting part is in a hollow rod shape, and a clamping groove of the lifting limiting part is formed in the side surface of the lifting limiting part; the signal trigger module further comprises: the magnet bracket is positioned in the hollow interior of the lifting limiting part; the magnet bracket is hung in the lifting limiting part clamping groove through an ear; and the first magnetic block is fixed at the bottom of the magnet bracket.

5. The mower of claim 1,

the collision detecting assembly includes: the second magnetic block is positioned on the movable upper cover; the second reed switch is positioned on the shell and below the second magnetic block; the second lifting detection plate is positioned between the second magnetic block and the second reed pipe; when the movable upper cover and the shell generate relative displacement in the horizontal direction, the second magnetic block is close to or far away from the second reed pipe, and the second reed pipe is opened or closed, so that a current signal on the second lifting detection plate is changed; and the second lifting detection plate is electrically connected with the control assembly so as to send the current signal to the control assembly as a detection signal.

6. The mower of claim 1,

the mower further comprises a cutting mechanism positioned on the housing; the cutting mechanism includes: the prime motor is positioned in the shell and used for driving the cutter head to rotate; the cutter head auxiliary height-adjusting assembly is fixedly arranged on an output shaft of the prime motor; the cutter head is positioned at the bottom of the auxiliary height-adjusting component of the cutter head and used for mounting the blades; and the auxiliary height-adjusting assembly of the cutter head is suitable for adjusting the height of the cutter head.

7. The mower of claim 6,

supplementary height-adjusting subassembly of blade disc includes: at least two cutter head connectors are movably sleeved from inside to outside in sequence; the first cutter head connector is positioned at the innermost side and fixedly arranged on an output shaft of the prime mover; the second cutter head connector is positioned on the outermost side and used for connecting the cutter head; and the adjusting piece is used for driving the second cutter head connector to move along the surface of the first cutter head connector so as to adjust the height of the cutter head.

8. The mower of claim 7,

the first blade tray connector includes: a hollow first body; at least one first guide groove which is respectively arranged at the outer side of the first body; and the first body is tightly sleeved on the outer side of the output shaft of the prime motor in a matching manner, and the adjacent cutter head connector on the outer side of the first body is guided to move by the first guide groove.

9. The mower of claim 7,

the second cutter head connector includes: a hollow second body; at least one second guide portion protruding from the second body; the opening end is positioned at one end of the second body and is used for sleeving the cutter head connector on the inner side; the closed end is positioned at the other end of the second body and is used for installing the adjusting piece; and the second guide part is matched with the guide groove adjacent to the inner side so as to guide the second cutter head connector to move along the cutter head connector adjacent to the inner side.

10. The mower of claim 7,

at least one third cutter head connector is arranged between the first cutter head connector and the second cutter head connector; the third cutter head connector includes: a hollow third body; at least one raised third guide part which is positioned at the inner side of the third body and is matched with the guide groove adjacent to the inner side of the third body; and at least one third guide groove which is positioned at the outer side of the third body and is matched with the guide part adjacent to the outer side of the third body.

11. The mower of claim 7,

the adjusting piece comprises an auxiliary height adjusting rod; the mounting end of the auxiliary height-adjusting rod is abutted against the output shaft end of the prime motor, and the adjusting end of the auxiliary height-adjusting rod penetrates through each cutter head connector and is in threaded connection with the cutter head; and the auxiliary height-adjusting rod is rotated, and the cutter head drives the second cutter head connector to move.

12. The mower of claim 11,

and a spring gasket is also arranged between the auxiliary height adjusting rod and the output shaft end of the prime mover.

13. The mower of claim 1,

the housing includes: an internally sealed housing; the functional hole is formed in the shell and is communicated with the inside and the outside of the shell; and a function module selectively detachably installed at the function hole to detect a sealing state of the case or maintain air pressure balance inside and outside the case.

14. The mower of claim 13,

the functional module is an air filter cover to balance air pressure inside and outside the shell of the mower in a working state; the air filter cover comprises: a base adapted to be mounted at the functional hole; an air filter cover mounting part extending outward from the base part; and the air filter cover mounting part is fixed with the shell through a fastening piece.

15. The mower of claim 13,

the functional module is an airtight charging nozzle and is matched with a barometer to detect the airtightness of the interior of the shell of the mower in a non-working state; the airtight nozzle includes: a body part installed at the functional hole; an assembling part extending from the main body part to the outside; the body part is provided with an inflation tube which protrudes outwards and is connected with the barometer; the extending direction of the assembling part is vertical to the extending direction of the charging pipe.

16. The mower of claim 1,

the mower also comprises a walking assembly for driving the mower to move;

the walking assembly comprises: at least one traveling wheel positioned on the housing; at least one universal wheel located on the housing; wherein the walking wheel includes: a hub; a wheel cover located on the wheel hub; and a wheel cover decoration piece detachably mounted on the wheel cover.

17. The mower of claim 16,

a plurality of wheel cover mounting holes are formed in the circumferential direction of the wheel cover;

the wheel trim includes: the middle part and a plurality of convex parts extending outwards from the middle part along the circumferential direction; and the bulges are nested in the corresponding wheel cover mounting holes;

the projection includes: the decoration block is matched with the wheel cover mounting hole; the flange is positioned on one side of the decorative block and protrudes out of the decorative block; and when the protruding parts are nested in the corresponding wheel cover mounting holes, the decoration blocks are clamped in the corresponding wheel cover mounting holes to be exposed from the outer sides of the wheel covers, and the flanges are abutted to the peripheries of the wheel cover mounting holes.

18. The mower of claim 17,

the wheel cover is detachably arranged on the wheel hub through a fastener; wherein the content of the first and second substances,

the fastener includes: the clamping heads are uniformly distributed on the circumference of the wheel cover; and the plurality of hub clamping grooves are uniformly distributed on the circumference of the hub and are matched with the corresponding clamping heads.

19. The mower of claim 17,

the wheel cover and the wheel hub are positioned and installed through at least two positioning pieces which are arranged asymmetrically; wherein the positioning member comprises: the positioning rod is positioned on the circumference of the wheel cover; and the hub positioning hole is positioned on the circumference of the hub and is matched with the positioning rod.

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