CN214430273U - Garden tool - Google Patents

Abstract

The utility model provides a garden tool, which comprises a machine body; the functional component is used for realizing the functions of the garden tool; the power assembly is used for providing power for the functional assembly; the travelling wheels are used for supporting the machine body and driving the machine body to move; the wheel hub motor is arranged in the travelling wheel, a fixing assembly used for fixing the wheel hub motor is arranged on the machine body, the fixing assembly comprises a fixing plate and a first fixing piece and a second fixing piece which are arranged on the fixing plate, an output shaft of the wheel hub motor is contained in the first fixing piece, and a power line in the output shaft penetrates through the first fixing piece and then penetrates through the second fixing piece until entering the interior of the machine body. Compared with the prior art, the utility model discloses a garden instrument not only need not use the speed reduction structure, has improved transmission efficiency, has simplified in addition in-wheel motor walk the line mode for the assembly is simple and convenient more.

Description

Garden tool

Technical Field

The utility model relates to a garden instrument, concretely relates to use in-wheel motor's grass pusher.

Background

Along with the rapid development of economy, the application of the grass mower in the garden tool industry is more and more extensive, the use of the grass mower brings much convenience to the life of people, and the work efficiency of people for trimming lawns is greatly improved. In order to reduce the physical consumption of an operator, the grass mower is provided with a self-propelled driving motor which is generally arranged on a walking wheel shaft of the grass mower and drives the wheel shaft to rotate through a speed reducing structure, so that the walking wheel is driven to rotate, and the purpose of self-propelling of the grass mower is achieved.

However, the design has high requirements on the speed reducing structure, and the large volume can cause the assembly of a power line and a control line of the speed reducing structure to be complicated and inconvenient to maintain.

In view of the above, there is a need for an improved conventional lawnmower to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a garden instrument, this garden instrument have not only used in-wheel motor, have designed in-wheel motor's the line mode of walking moreover for assemble more simple and convenient.

In order to achieve the above object, the utility model provides a garden tool, include: a body; the functional component is used for realizing the functions of the garden tool; the power assembly is used for providing power for the functional assembly; the travelling wheels are used for supporting the machine body and driving the machine body to move; the wheel hub motor is arranged in the travelling wheel, a fixing assembly used for fixing the wheel hub motor is arranged on the machine body, the fixing assembly comprises a fixing plate and a first fixing piece and a second fixing piece which are arranged on the fixing plate, an output shaft of the wheel hub motor is contained in the first fixing piece, and a power line in the output shaft penetrates through the first fixing piece and then penetrates through the second fixing piece until entering the interior of the machine body.

As a further improvement of the present invention, the first fixing member and the second fixing member are located on the same side of the fixing plate.

As a further improvement of the present invention, the output shaft and the first fixing member are both hollow structures, the side wall of the output shaft has a groove, the side wall of the first fixing member has a through groove, the groove corresponds to the through groove, so that the power line in the output shaft is from the groove to the through groove and the first fixing member is worn out.

As a further improvement of the utility model, the through groove is in a U-shaped arrangement.

As a further improvement of the present invention, the second fixing member is also a hollow structure, and the power cord is passed through the through groove and then passed through the second fixing member until reaching the bottom of the body.

As a further improvement of the present invention, the bottom of the machine body has been provided with a hole, and the power cord enters from the hole inside the machine body.

As a further improvement of the present invention, the first fixing member and the fixing plate are integrally disposed, and the second fixing member fixes the fixing plate to the machine body.

As a further improvement, the second mounting includes and passes simultaneously the fixed plate with the fixed part of organism reaches certainly the outside locking portion that extends of fixed part, locking hole has been seted up in the locking portion, the fixed orifices has been seted up to the correspondence on the fixed plate, so that the bolt passes locking hole with the fixed orifices will second mounting locking is fixed on the fixed plate.

As a further improvement of the present invention, the fixing component further comprises a protecting tube disposed outside the power line, one end of the protecting tube is connected to the first fixing member, and the other end of the protecting tube passes through the second fixing member and then enters the inside of the body and is fixedly connected to the body.

As a further improvement of the utility model, the protective tube is a corrugated tube.

The utility model has the advantages that: the utility model discloses a garden instrument is through setting up first mounting and second mounting on the fixed plate to when the output shaft at in-wheel motor was acceptd in first mounting, the power cord in the output shaft can be worn out and pass the second mounting from first mounting, until inside getting into the organism. Compared with the prior art, the utility model discloses a garden instrument not only need not use the speed reduction structure, has improved transmission efficiency, has simplified in addition in-wheel motor walk the line mode for the assembly is simple and convenient more.

Drawings

Fig. 1 is a perspective view of a lawnmower according to a preferred embodiment of the present invention.

FIG. 2 is another angular perspective view of the lawnmower of FIG. 1.

Fig. 3 is a schematic structural view of the rear wheel and hub motor in fig. 1.

Fig. 4 is an exploded view of fig. 3.

Fig. 5 is a combined structure view of the first rear wheel and the fixing member of fig. 4.

Fig. 6 is an exploded view of fig. 5.

Fig. 7 is another angular schematic of fig. 6.

Fig. 8 is a schematic structural view of the fixing assembly of fig. 6.

Fig. 9 is another angular schematic of fig. 8.

Fig. 10 is a perspective view of the raised structure of fig. 4 after assembly.

Fig. 11 is an exploded view of fig. 10.

Fig. 12 is a partially enlarged view of fig. 2 at the second rear wheel.

FIG. 13 is a cross-sectional view of FIG. 12 with the addition of a shielding tube.

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.

As shown in fig. 1 and 2, the present invention discloses a gardening tool 100, which includes a machine body 10, a walking wheel 20 for supporting the machine body 10 and driving the machine body 10 to move, and a handrail support 30 connected to the machine body 10 for a user to walk. In this embodiment, the garden tool 100 is a grass mower, which is provided with two blades (i.e. functional components) 11, the two blades 11 are arranged at the bottom middle position of the machine body 10 and are staggered from each other, the two blades 11 are driven by a motor (i.e. power component) 12 respectively to realize grass cutting, and the motor 12 is a waterproof motor. The rear part of the grass mower 100 is provided with a grass collecting bag 13, so that the grass mower 100 has a grass collecting function. Of course, the garden tool 100 may be a single-blade mower or other type of garden tool, and is not limited thereto.

The handle support 30 extends obliquely upward from the rear of the machine body 10, and a control unit (not shown) is provided on the handle support 30 and controls the self-walking and cutting of the lawnmower 100. That is to say, the control assembly is used for controlling the rotating speed of the two blades 11 on one hand, so as to ensure the cutting effect; and on the other hand, the walking speed and the walking direction of the walking wheels 20 are controlled to ensure that the whole grass mower 100 can walk and work normally.

As shown in fig. 3 to 13 in combination with fig. 1, the traveling wheels 20 include a pair of front wheels 21 located at a front side of the body 10 and a pair of rear wheels 22 located at a rear side of the body 10, and each of the rear wheels 22 has a size larger than that of each of the front wheels 21. The rear wheels 22 are driving wheels, each rear wheel 22 is internally provided with a hub motor 40, and the hub motor 40 is an outer rotor motor. An output shaft 41 of the in-wheel motor 40 is connected to the rear wheel 22, so that the in-wheel motor 40 and the rear wheel 22 rotate coaxially, and thus when the in-wheel motor 40 is started, the rear wheel 22 is driven to rotate, and the machine body 10 is driven to move forwards or backwards. Of course, in other embodiments of the present invention, the in-wheel motor 40 may be disposed in the front wheel 21, and generally, the in-wheel motor 40 is disposed in the following three ways: arranging hub motors 40 in the two rear wheels 22; secondly, a hub motor 40 is arranged in the two front wheels 21; and thirdly, the in-wheel motors 40 are arranged in the two front wheels 21 and the two rear wheels 22 at the same time.

In current lawn mower, use the inner rotor motor as self-propelled driving motor more, inner rotor motor is with low costs, small, but inner rotor motor's rotational speed is high, the moment of torsion is little, must use the reducing gear box to reduce output speed when the self-propelled driving motor as the lawn mower uses, the increase moment of torsion, if do not use the reducing gear box, then the self-propelled speed of lawn mower is too fast, make the lawn mower be because the brake is not too late on the one hand, hit the barrier, on the other hand the lawn mower is when self-propelled, the grass mower blade is working simultaneously, if self-propelled speed is too fast, can make the mowing effect unsatisfactory, the condition of sparsely when the lawn cutting appears, the lawn is not pleasing to the eye enough. Therefore, in this embodiment, after the in-wheel motor 40 is designed as an outer rotor motor, the rotation speed is low, and the torque is large, so that a speed reduction device is not required, and the in-wheel motor 40 is directly used to drive the rear wheel 22 to rotate, so as to realize the walking of the grass mower 100 and the adjustment of the walking speed. Compared with the prior art, the volume occupied by the speed reducing device is saved, so that the structure of the grass mower 100 is more compact, the space is saved, and the energy loss caused by multi-stage transmission is avoided.

Preferably, the in-wheel motor 40 is coaxial with the rear wheel 22, and the rear wheel 22 is mounted on the outer rotor of the in-wheel motor 40. The angular speed of the in-wheel motor 40 is the same as that of the rear wheel 22, and when the outer diameter of the rear wheel 22 is 4-15 inches, the rotating speed of the in-wheel motor 40 is less than or equal to 563 r/min. Preferably, when the outer diameter of the rear wheel 22 is 4-15 inches, the rotation speed of the in-wheel motor 40 is 100-200 r/min, and in one embodiment of the present application, the rotation speed of the in-wheel motor 40 is 120 r/min. It can be understood that although the rotation speed of the in-wheel motor 40 can be set to be high, when the rotation speed of the in-wheel motor 40 is too high, the operator cannot keep up with the advancing speed of the lawnmower 100, and a lot of experiments show that: when the outer diameter of the rear wheel 22 is 4-15 inches (inch), the maximum rotating speed of the in-wheel motor 40 is not more than 563 r/min.

In summary, when the in-wheel motor 40 is used for the driving wheel of the grass mower 100, especially the step-type grass mower, the limitation of various factors needs to be considered, and the outer rotor in-wheel motor 40 with a special parameter needs to be designed for the step-type grass mower. In an embodiment of the application, the rotating speed of the in-wheel motor 40 is selected within a range of 100-200 r/min, and the rated power of the in-wheel motor 40 is 50-120W, so that the traveling speed meets the cutting requirement of the grass mower 100, and the rated power of the in-wheel motor 40 is limited within a range of 50-120W, thereby avoiding the influence on the normal working time of the grass mower 100 due to too fast electric consumption. To avoid the self-propelled performance from being affected by too large or too small of the in-wheel motor 40, the diameter of the drive wheel of the lawnmower 100 is set to 4 to 15 inches (inch).

Further, the in-wheel motor 40 is of a disc structure, and since the outer diameter of the rear wheel 22 is larger than the diameter of the motor which is usually mounted on the axle of the rear wheel, the thickness of the rear wheel 22 can be designed to be thinner, so that the length of the in-wheel motor 40 in the transverse direction is reduced, and the rear wheel 22 is prevented from exceeding the cutting cavity. In the present application, the in-wheel motor 40 has a direct transmission structure, so the transmission efficiency is particularly high.

The hub motor 40 is completely accommodated in the rear wheel 22, so that the occupied volume can be reduced. The rear wheel 22 further comprises a tire 221 arranged on the outer side of the in-wheel motor 40, and an air inlet 222 is arranged on the tire 221, so that the tire 221 is inflated by an inflating device, and the effect of buffering and shock absorption is achieved. Preferably, the tire 221 is a vacuum tire, but should not be limited thereto. In other embodiments, the tire 221 may also be a non-pneumatic tire with a cavity structure.

The in-wheel motor 40 comprises a stator, a rotor, a motor end cover and a control panel, wherein the control panel is used for controlling the rotating speed and the rotating direction of the in-wheel motor 40. The rear wheels 22 include a first rear wheel 223 and a second rear wheel 224 respectively disposed at two sides of the machine body 10, and a distance between the first rear wheel 223 and the second rear wheel 224 is smaller than a width of the machine body 10 in a left-right direction, so as to avoid an influence on a cutting range of the lawnmower 100 due to an excessively large distance between the two rear wheels.

Preferably, a first in-wheel motor 401 is arranged in the first rear wheel 223, a second in-wheel motor 402 is arranged in the second rear wheel 224, when the rotating speed of the first in-wheel motor 401 is different from the rotating speed of the second in-wheel motor 402, the rotating speeds of the first rear wheel 223 and the second rear wheel 224 are different, and then the rotation (left or right turning) of the grass mower 100 can be realized; when the rotation direction of the first in-wheel motor 401 is different from the rotation direction of the second in-wheel motor 402, the rotation directions of the first rear wheel 223 and the second rear wheel 224 are different, and the grass mower 100 can realize zero steering, i.e. pivot steering. Of course, in other embodiments, the in-wheel motor 40 may be disposed only in the first rear wheel 223 or the second rear wheel 224, as long as the two rear wheels 22 can synchronously rotate, which is not limited herein.

In one embodiment of the present application, the rotational speed of the hub motor 40 is at least partially related to the rotational speed of the blade 11. When the walking speed of the lawn mower 100 becomes faster, i.e. the rotation speed of the hub motor 40 is high, the rotation speed of the blade 11 also needs to be increased to avoid uneven mowing. When the walking speed of the lawnmower 100 becomes slower, the rotation speed of the blade 11 also needs to be reduced. That is, the rotational speed of the blade 11 is different in different cutting modes of the lawnmower 100, and the rotational speed of the in-wheel motor 40 is correspondingly different to match the cutting modes.

In an embodiment of the application, be provided with detection device (not shown) on the lawn mower 100, can detect the rotational speed of two in-wheel motor 40, when detection device detects the rotational speed of two in-wheel motor 40 inequality, mean promptly the lawn mower 100 is in the turn in-process, detection device signals the control panel to in-wheel motor 40, control panel control in-wheel motor 40 low-speed operation avoids causing danger because of the speed is too fast when turning. In the low-speed operation mode, the rotation speed of the in-wheel motor 40 is lower than 100 r/min. In order to ensure that turning is not affected, the rotation speeds of the two in-wheel motors 40 are reduced in equal proportion. For example, when the lawn mower 100 turns to the left, the rotation speed of the left in-wheel motor 40 is 100r/min, the rotation speed of the right in-wheel motor 40 is 150r/min, and the rotation speeds of the left and right in-wheel motors 40 are reduced by 50% in an equal proportion, at this time, the rotation speed of the left in-wheel motor 40 is 50r/min, and the rotation speed of the right in-wheel motor 40 is 75r/min, so that the turning progress of the lawn mower 100 is not affected. Of course, the reduction ratio may be other ratios, and is not limited to the numerical value in this embodiment.

The machine body 10 is provided with a fixing assembly 50 for fixing the in-wheel motor 40, the fixing assembly 50 includes a fixing plate 51, a fixing seat 52 assembled and fixed with the fixing plate 51, and a first fixing member 53 and a second fixing member 54 located on the fixing plate 51, and the first fixing member 53 and the fixing seat 52 cooperate to fix the rear wheel 22 to the fixing plate 51. The fixing plate 51 is provided with a through hole 511 through which the output shaft 41 of the in-wheel motor 40 passes, and the fixing seat 52 is correspondingly provided with an accommodating hole 521 for accommodating the output shaft 41 of the in-wheel motor 40, so that the output shaft 41 can be accommodated in the accommodating hole 521 in a limited manner after passing through the through hole 511, thereby realizing the fixed connection between the in-wheel motor 40 and the rear wheel 22 with the fixing plate 51. Referring to fig. 3 and 4, the height-adjusting bracket 61 is fixed to the housing of the machine body 10 by bolts, one end of the second fixing member 54 passes through the height-adjusting bracket 61 and is fastened and fixed to the height-adjusting bracket 61, and the other end of the second fixing member 54 is fixed to the fixing plate 51 by bolts, so that the fixing plate 51 can be connected to the machine body 10 of the mower 100 by the second fixing member 54, which not only realizes the relative fixation between the in-wheel motor 40 and the rear wheel 22 and the machine body 10, but also provides a foundation for the height adjustment of the mower 100.

The tail end of the output shaft 41 is of a milled flat structure, and the section of the through hole 511 is matched with that of the tail end of the output shaft 41, so that the output shaft 41 can pass through the through hole 511. Specifically, the output shaft 41 is disposed in a cylindrical shape as a whole, and when the output shaft 41 is in normal use, one side of the output shaft 41 is a flat key structure 411 (i.e., one outer wall surface is a flat surface), and the other side is provided with a notch 412, and the flat key structure 411 is disposed opposite to the notch 412. The flat key structure 411 is arranged to make the cross section of the end of the output shaft 41 be D-shaped on one hand, and the cross section of the through hole 511 be D-shaped correspondingly, so that the output shaft 41 can smoothly pass through the through hole 511, and the output shaft 41 is prevented from rotating; on the other hand, it is also convenient to open a slot 410 on the flat key structure 411 so that the power cord inside the in-wheel motor 40 can pass through the slot 410 of the output shaft 41.

The receiving hole 521 is U-shaped, the notch 412 is formed by recessing from the outer wall surface of the other side of the output shaft 41, and the notch 412 is arranged so that when the output shaft 41 is received in the receiving hole 521, the inner wall of the receiving hole 521 is just fastened and fixed with the notch 412, the output shaft 41 is limited, and the output shaft 41 is prevented from being pulled out of the fixing seat 52. That is, the output shaft 41 can be prevented from rotating by the cooperation of the flat key structure 411 and the through hole 511; the notch 412 and the receiving hole 521 are engaged with each other to prevent the output shaft 41 from sliding left and right.

In this embodiment, the receiving hole 521 is formed by being recessed downward from the top of the fixing base 52, so that the fixing base 52 can fix the end of the output shaft 41 from the bottom to the top, and the end of the output shaft 41 is fixed in the receiving hole 521. That is, the width of the receiving hole 521 is smaller than the diameter of the output shaft 41, and in order to limit the position of the output shaft 41 by the receiving hole 521, it is preferable that the output shaft 41 is limited in the receiving hole 521 such that the notch 412 is exactly corresponding to the inner side wall of the receiving hole 521, and at this time, the output shaft 41 is fixed and limited by the notch 412 and the receiving hole 521, and the stability of the output shaft 41 is ensured.

The fixing seat 52 is further provided with a first mounting hole 522 through which the bolt 55 penetrates, and the fixing plate 51 is correspondingly provided with a second mounting hole 512, so that the fixing seat 52 and the fixing plate 51 can be fixed by the bolt 55 penetrating through the first mounting hole 522 and the second mounting hole 512, and the in-wheel motor 40 can be fixed, and the operation is simple and convenient, and the maintenance is simpler and more convenient. Preferably, the first mounting hole 522 is located below the receiving hole 521; of course, in other embodiments, the position of the first installation hole 522 may be determined according to practical situations, and is not limited herein. In addition, the fixing manner between the fixing seat 52 and the fixing plate 51 may be other, such as: snap fastening, adhesive fastening, etc., which are not illustrated herein.

Because the utility model discloses an in the preferred embodiment, all be provided with in every rear wheel 22 in the in-wheel motor 40, so fixed plate 51 and fixing base 52 correspond all to be provided with two to correspond fixed connection with the in-wheel motor 40 in two rear wheels 22, realize the fixed of the in-wheel motor 40 in two rear wheels 22. The fixing assembly 50 further includes a connecting shaft 514, and the connecting shaft 514 is used for connecting the two rear wheels 22, so as to further ensure that the two rear wheels 22 can rotate synchronously relative to the connecting shaft 514 when being heightened. Specifically, two ends of the connecting shaft 514 are respectively connected to the bottoms of the two fixing plates 51, and preferably, the connecting shaft 514 is integrally arranged with the two fixing plates 51; of course, the connecting shaft 514 may also be locked, fastened or adhered to the two fixing plates 51, and the specific fixing manner is not limited.

For the lawn mower 100, it is necessary to have a height-adjusting function, that is, the height of the rear wheel 22 relative to the lawn mower 100 can be changed, so that the power line and the control line of the hub motor 40 need to be designed, which can ensure that the power line cannot be pulled by the movement of the rear wheel 22 and cannot be too long and hooked by objects on the lawn. In order to achieve the above object, the present invention utilizes the first fixing member 53 and the second fixing member 54 to design the wiring manner of the power line.

Since the fixing plate 51 and the fixing base 52 are provided with two, the first fixing member 53 and the second fixing member 54 are also provided with two, respectively, to assemble the power lines of the two in-wheel motors 40. The specific structure of the first fixing member 53 and the second fixing member 54 and the specific routing manner of the power line will be described in detail below.

Specifically, the first fixing member 53 is formed on the fixing plate 51 and is used for receiving and fixing the output shaft 41, and the output shaft 41 has a hollow structure so that a power line (and a control line) of the in-wheel motor 40 can pass through the hollow structure. The second fixing member 54 is fitted on the fixing plate 51 for fitting the power supply line in the output shaft 41. In this embodiment, the first fixing member 53 and the second fixing member 54 are located on the same side of the fixing plate 51, so that the power cord can be assembled in the shortest distance. As shown in fig. 12, the power cord 7 is assembled in the following manner: the power cord 7 is led out from the in-wheel motor 40 to the hollow output shaft 41, and when the output shaft 41 is accommodated in the first fixing member 53, the power cord 7 in the output shaft 41 passes through the second fixing member 54 after passing out from the first fixing member 53 until entering the interior of the machine body 10 for fixing.

As shown in fig. 6 to 9, the first fixing member 53 is a hollow structure, and the output shaft 41 is accommodated in the first fixing member 53 to ensure that the output shaft 41 can be stably mounted on the fixing plate 51, that is, the first fixing member 53 plays a role in auxiliary fixing and limiting. A through groove 532 is formed on the side wall of the first fixing member 53, and the through groove 532 is used for the power line in the output shaft 41 to pass through. Preferably, the first fixing element 53 and the fixing plate 51 are integrally disposed, and the through groove 532 penetrates through a sidewall of the first fixing element 53 and is formed by being recessed downwards along a height of the first fixing element 53, so that the through groove 532 is disposed in a U shape, and routing is facilitated when the in-wheel motor 40 is installed.

The second fixing member 54 is also a hollow structure, and the power cord penetrates out of the through groove 532, enters into and penetrates through the second fixing member 54 until reaching the bottom of the machine body 10. The second fixing element 54 includes a fixing portion 541 passing through the fixing plate 51 and the height-adjusting bracket 61, and a locking portion 542 extending outward from the fixing portion 541, wherein the locking portion 542 is provided with a locking hole 543, and the fixing plate 51 is correspondingly provided with a fixing hole 513, so that the second fixing element 54 can be locked and fixed on the fixing plate 51 by passing through the locking hole 543 and the fixing hole 513 with a bolt 56.

It should be noted that: 1. the output shaft 41 is fixed to the fixed plate 51 and is not rotatable, so that the power cord can be prevented from being wound. 2. The open slots 410 on the side wall of the output shaft 41 correspond to the through slots 532 after installation, so that the fixing plate 51 does not directly contact with the power cord, and the fixing plate 51 contacts with the output shaft 41, thereby protecting the power cord.

In fig. 12, an opening 14 is formed at the bottom of the machine body 10, and the power cord 7 penetrates out of the second fixing member 54 and then enters the interior of the machine body 10 through the opening 14, so as to be connected with a power supply and a control component inside the machine body 10. Therefore, the wiring mode of the power line 7 is simple and convenient, the power line 7 cannot be scratched, and the power line is simple to assemble and convenient to maintain.

As shown in fig. 13, in order to ensure waterproof performance and facilitate installation, the fixing assembly 50 further includes a protection tube 57 disposed outside the power line 7, wherein one end of the protection tube 57 is connected to the first fixing member 53, and the other end of the protection tube 57 penetrates through the second fixing member 54 and enters the interior of the machine body 10 to be fixedly connected to the machine body 10. Preferably, the protection tube 57 is a corrugated tube, but should not be limited thereto.

As shown in fig. 1 and 3, the rear wheel 22 is mounted on the height-adjustable bracket 61 of the lawn mower 100, so that the height of the rear wheel 22 can be adjusted by the height-adjustable structure, thereby facilitating the mowing action of the two blades 11. Preferably, the fixing plate 51 is pivotally connected to the height-adjusting bracket 61, and the height-adjusting bracket 61 is fixed to the housing of the machine body 10 by bolts. When the height needs to be adjusted, the adjusting wrench 62 is directly pulled to drive the fixing plate 51 to rotate.

Specifically, as shown in fig. 10 and 11, the height adjusting structure includes the fixed plate 51, a shift plate 63 disposed on one side of the fixed plate 51 and fixed to the machine body 10, and the adjustment wrench 62, wherein the adjustment wrench 62 is disposed on the other side of the fixed plate 51 and substantially above the fixed plate 51 for engaging with the shift plate 63. The utility model discloses in, second mounting 54 is the rotation center of heightening the structure, and this rotation center is unchangeable to the height of organism 10 bottom, makes things convenient for fixed plate 51 to rotate for organism 10 on the one hand, and on the other hand makes things convenient for the power cord to locate directly to get into inside organism 10 from second mounting 54, can not lead to the power cord to be dragged or convolute because highly adjusting rear wheel 22.

The gear plate 63 is provided with a plurality of gear grooves 631 of different heights, the lower side of the gear plate 63 is arc-shaped, the gear grooves 631 of different heights are distributed at different positions of the arc, and the center of the arc coincides with the second fixing member 54, so that the distance from each gear groove 631 to the second fixing member 54 is consistent. The adjusting wrench 62 can be operated by a user to cooperate with the gear slots 631 with different heights, and the bottom of the adjusting wrench 62 is provided with a positioning portion 620, and the positioning portion 620 penetrates through the fixing plate 51 and cooperates with the gear slots 631 from bottom to top. In the embodiment, the gear groove 631 is formed by a positioning notch formed at the bottom of the gear plate 63, but it should not be limited thereto.

The height-adjusting structure further includes an elastic member 64 elastically disposed between the adjusting wrench 62 and the fixing plate 51, and a pushing slider 65 disposed between the elastic member 64 and the adjusting wrench 62, and the fixing plate 51 is provided with a receiving cavity 515 for receiving the pushing slider 65 and the elastic member 64. In an initial state, the positioning portions 620 are held in the corresponding gear grooves 631 by the elastic force of the elastic member 64, and when the adjustment wrench 62 is pressed downward, the elastic member 64 is compressed until the positioning portions 620 are disengaged from the current gear grooves 631, so that gear shifting is performed. That is, the adjustment wrench 62 is operatively moved on the fixed plate 51 such that the positioning part 620 is located in or out of the gear groove 631. In this embodiment, the elastic element 64 is a compression spring, one end of which is sleeved on the protrusion 510 at the bottom of the accommodating cavity 515, and the other end of which elastically presses against an installation groove (not shown) at the bottom of the pushing slider 65; of course, this should not be taken as a limitation. The pushing slider 65 is held by the bottom of the adjusting wrench 62, so that the pushing slider 65 can only move at the lower end of the accommodating cavity 515 to prevent the pushing slider 65 from being removed from the accommodating cavity 515.

The adjustment wrench 62 includes a fitting portion 621 extending in the up-down direction and fitting with the fixing plate 51, an extending portion 622 extending upward from the fitting portion 621, and a handle 623 continuing upward from the extending portion 622, and the handle 623 is curved in a horizontal direction perpendicular to the up-down direction to form a shape convenient for an operator to operate. The extension portion 622 is farther away from the machine body 10 in the horizontal direction than the fitting portion 621. The engaging portion 621 is formed with a first elongated sliding slot 624, and the adjusting wrench 62 is connected to the fixing plate 51 through the first sliding slot 624 in a vertically movable manner. In this embodiment, two first sliding grooves 624 are provided, the two first sliding grooves 624 are spaced apart in the vertical direction, and the positioning portion 620 is provided between the two first sliding grooves 624. The fixing plate 51 is provided with a second elongated sliding slot 516, the positioning portion 620 passes through the second sliding slot 516 and then is engaged with the gear slot 631, and the positioning portion 620 can move in the second sliding slot 516 along the up-down direction.

The fixing plate 51 is further provided with two protruding portions 517, the two protruding portions 517 are correspondingly disposed and are arranged at intervals in the vertical direction, each protruding portion 517 in this embodiment is composed of a protruding column and a nut for locking and fixing the protruding column, and specifically, after the protruding column passes through the corresponding first sliding groove 624, the protruding column is fixedly connected with the matching portion 621 through the nut; of course, when the handle 623 is pressed, the whole of the protrusion 517 can move up and down along the first sliding groove 624, and the positioning portion 620 can also move up and down along the second sliding groove 516.

The specific operation mode of the height-adjusting structure is as follows: firstly, the adjusting wrench 62 is pressed down to enable the positioning portion 620 to be quickly separated from the current gear groove 631, then the adjusting wrench 62 is rotated back and forth to enable the fixing plate 51 to rotate together, meanwhile, the two rear wheels 22 rotate synchronously, after a proper working height is selected, the adjusting wrench 62 is loosened, under the action of the restoring force of the compression spring 64, the sliding block 65 is pushed to push the positioning portion 620 to be quickly fixed with the corresponding gear groove 631, at the moment, height adjustment between the wheel axle of the rear wheels 22 and the ground is achieved, and time and labor are saved.

In this application, in-wheel motor 40 is by the mains operated of lawnmower 100, through designing the line mode of walking to the power cord, can avoid when adjusting the height of rear wheel 22, causes the influence to the power cord. The reason is that: since the fixing plates 51 of the two rear wheels 22 are connected together through the connecting shaft 514, when the height of one rear wheel 22 is adjusted, the other rear wheel 22 rotates along with the rear wheel, so that the mowing height is adjusted, and since the second fixing piece 54 is the rotation center for adjusting the height of the rear wheel 22, the part of the power cord from the through groove 532 to the second fixing piece 54 is fixed relative to the fixing plate 51, so that the power cord is not influenced when the power cord is adjusted to be high; meanwhile, the portion of the power cord from the second fixing member 54 to the opening 14 is also fixed relative to the machine body 10, so that the power cord is not pulled or wound when being adjusted to be high.

To sum up, the grass mower 100 of the present invention, on one hand, sets the in-wheel motor 40 in the rear wheel 22 and sets the in-wheel motor 40 as an outer rotor motor, so that the in-wheel motor 40 can be utilized to drive the rear wheel 22 to rotate, thereby realizing self-walking of the grass mower 100; on the other hand, the adjustment of the self-propelled speed of the lawnmower 100 can be achieved by the in-wheel motor 40. Compared with the prior art, the utility model discloses a lawn mower 100 need not to set up decelerator, has not only saved the shared volume of decelerator for lawn mower 100's structure is compacter, save space, has avoided the energy loss that multistage transmission brought simultaneously.

In addition, the fixing assembly 50 is provided to include the fixing plate 51 and the fixing base 52 assembled and fixed with the fixing plate 51, so that the output shaft 41 of the in-wheel motor 40 can pass through the through hole 511 on the fixing plate 51 and the receiving hole 521 on the fixing base 52 to realize the fixed connection between the in-wheel motor 40 and the machine body 10, and when the in-wheel motor 40 is damaged, only the rear wheel 22 needs to be disassembled and replaced with a new one, and the in-wheel motor 40 can be repaired later without affecting the use.

Furthermore, through setting up first mounting 53 and second mounting 54 on fixed plate 51 to the power cord in the output shaft 41 can wear out and pass second mounting 54 from first mounting 53, inside entering organism 10, has simplified in-wheel motor 40's the assembly problem of walking the line, makes in-wheel motor 40's installation more simple and convenient, and the maintenance is also more convenient.

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 (10)

1. A garden tool, comprising:

a body;

the functional component is used for realizing the functions of the garden tool;

the power assembly is used for providing power for the functional assembly;

the travelling wheels are used for supporting the machine body and driving the machine body to move;

the wheel hub motor is arranged in the travelling wheel, a fixing assembly used for fixing the wheel hub motor is arranged on the machine body, the fixing assembly comprises a fixing plate and a first fixing piece and a second fixing piece which are arranged on the fixing plate, an output shaft of the wheel hub motor is contained in the first fixing piece, and a power line in the output shaft penetrates through the first fixing piece and then penetrates through the second fixing piece until entering the interior of the machine body.

2. The gardening tool according to claim 1, wherein: the first fixing piece and the second fixing piece are located on the same side of the fixing plate.

3. The gardening tool according to claim 1, wherein: the output shaft and the first fixing piece are both of a hollow structure, a groove is formed in the side wall of the output shaft, a through groove is formed in the side wall of the first fixing piece, and the groove corresponds to the through groove, so that a power line in the output shaft can penetrate out of the first fixing piece from the groove and the through groove.

4. The gardening tool according to claim 3, wherein: the through groove is arranged in a U shape.

5. The gardening tool according to claim 3, wherein: the second fixing piece is also of a hollow structure, and the power line penetrates out of the through groove, enters the second fixing piece and penetrates through the second fixing piece until reaching the bottom of the machine body.

6. The gardening tool according to claim 5, wherein: the bottom of the machine body is provided with a hole, and the power line enters the interior of the machine body from the hole.

7. The gardening tool according to claim 1, wherein: the first fixing piece and the fixing plate are integrally arranged, and the second fixing piece fixes the fixing plate to the machine body.

8. The gardening tool according to claim 7, wherein: the second fixing piece comprises a locking portion which penetrates through the fixing portion of the fixing plate and the machine body and extends outwards from the fixing portion, a locking hole is formed in the locking portion, a fixing hole is correspondingly formed in the fixing plate, and a bolt penetrates through the locking hole and the fixing hole to be fixed on the fixing plate in a locking mode.

9. The gardening tool according to claim 1, wherein: the fixing assembly further comprises a protective pipe sleeved on the outer side of the power line, one end of the protective pipe is connected with the first fixing piece, and the other end of the protective pipe penetrates through the second fixing piece and then enters the inside of the machine body and is fixedly connected with the machine body.

10. The gardening tool according to claim 9, wherein: the protective pipe is a corrugated pipe.

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