CN218072513U

CN218072513U - Axle structure and lawn mower

Info

Publication number: CN218072513U
Application number: CN202221963054.4U
Authority: CN
Inventors: 魏基栋; 陈少杰
Original assignee: Agilex Robotics Shenzhen Lt
Current assignee: Agilex Robotics Shenzhen Lt
Priority date: 2022-07-26
Filing date: 2022-07-26
Publication date: 2022-12-20
Anticipated expiration: 2032-07-26

Abstract

An axle structure and a lawnmower, the axle structure comprising: the axle main body comprises an installation part and connecting parts positioned at two ends of the installation part, the installation part is connected with a chassis of the mower, and the connecting parts protrude out of the chassis from the axial direction of the installation part; the enclosing and blocking piece is connected to the periphery of the connecting part and extends along the radial direction of the connecting part, and the enclosing and blocking piece is used for enclosing and blocking at least part of a cutter head of the mower; through set up on the axle structure and enclose the fender piece to enclose fender piece and keep off partial blade disc, can prevent that the user from stretching into near the blade disc with arm or other objects from the bottom of lawn mower, reduce the injured risk of user, protection blade disc that can also step forward.

Description

Axle structure and lawn mower

Technical Field

The application relates to the field of outdoor mowing tools, in particular to an axle structure and a mower.

Background

A lawn mower is a gardening weeding device, also called as a weeder, a lawnmower, a lawn trimmer and the like, and is a mechanical tool for trimming lawns, vegetation and the like. The most important component of the mower is the cutter head, and the size and the sharpness of the cutter head greatly influence the efficiency of the mower. However, with the enlargement or the exposure of the cutter head, the danger coefficient of the mower is also improved, and the upper arm of a user crowd, particularly children, can be easily stretched into the vicinity of the cutter head to be cut. Therefore, how to improve the safety of the mower while ensuring the stable operation of the mower cutter head becomes a key problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an axle structure and lawn mower, this lawn mower has higher security, can avoid the user to touch near the blade disc and cause the injury.

In order to achieve the purpose of the application, the application provides the following technical scheme:

in a first aspect, the present application provides an axle structure for a lawn mower, comprising: the axle main body comprises a mounting part and connecting parts positioned at two ends of the mounting part, the mounting part is connected with a chassis of the mower, and the connecting parts protrude out of the chassis in the axial direction of the mounting part; and the enclosing piece is connected to the periphery of the connecting part and extends along the radial direction of the connecting part, and the enclosing piece is used for enclosing at least part of a cutter head of the mower.

In one embodiment, the enclosure comprises a first flap that is angled with respect to a left-right direction of the mower.

In one embodiment, the first flap is perpendicular to a lateral direction of the lawnmower, and the first flap has a tapered shape in a direction toward the ground when the lawnmower is operated.

In one embodiment, the enclosure member further comprises a second baffle, the second baffle is opposite to the first baffle, and a separation distance is provided between the first baffle and the second baffle.

In one embodiment, the first baffle includes a surrounding portion perpendicular to the left-right direction of the lawn mower, and a reinforcing portion connected to a surface of the surrounding portion facing away from the tire, and the reinforcing portion is further connected to the connecting portion.

In one embodiment, the first flap is parallel to a left-right direction of the mower.

In one embodiment, the axle main body comprises a first matching part and a second matching part, wherein the first matching part is connected to the periphery of the mounting part and is detachably connected with the chassis; the second cooperation portion is connected the periphery of installation department, and dorsad first cooperation portion, the second cooperation portion with the chassis can be dismantled and be connected.

In one embodiment, the second mating portion includes a first curved end and a second curved end, the first curved end and the second curved end being connected at an included angle.

In one embodiment, the axle body further includes a third mating portion connected to an outer periphery of the mounting portion, the third mating portion and the first mating portion having a height difference in a radial direction along the mounting portion.

This application encloses through setting up in the axle structure and keeps off the piece to will enclose to keep off the piece and enclose and keep off partial blade disc, can prevent that the user from stretching into near the blade disc with arm or other objects from the bottom of lawn mower, reduce user injured's risk, protection blade disc that can also be further.

In a second aspect, the present application further provides a lawn mower, the lawn mower includes any one of a chassis, a cutter head, tires and a first aspect, the axle structure, the cutter head is connected to one side of the chassis facing the ground, the axle structure is connected to the chassis, and the tires are connected to the axle structure.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic exterior view of an embodiment of a lawn mower;

FIG. 2 is a schematic view of an embodiment of an axle structure and tire;

FIG. 3 is a cross-sectional schematic view of an embodiment of an axle structure and tire;

FIG. 4 is a cross-sectional schematic view of an embodiment of an axle structure;

FIG. 5 is a top schematic view of an embodiment of an axle structure;

FIG. 6 is a schematic view of an embodiment of an axle body and a fastener;

FIG. 7 is a top schematic view of an embodiment of an axle structure and tire.

Description of reference numerals: 10-mower, 100-chassis, 110-tail, 111-first assembly part, 112-second assembly part, 113-third assembly part, 120-middle part, 200-tire, 300-cutterhead;

400-axle structure, 410-axle body, 411-mounting part, 412-connecting part, 413-assembly hole, 414-first matching part, 415-second matching part, 415A-first bending end, 415B-second bending end, 416-third matching part, 420-surrounding blocking part, 421-first baffle, 421A-surrounding blocking part, 421B-reinforcing part, 4211-guide hole, 422-second baffle, 430-fixing part, 431-fixing screw and 432-pressure plate.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The embodiments and features of the embodiments described below can be combined with each other without conflict.

The present application provides a lawn mower 10, please refer to fig. 1, including a chassis 100, a cutter 300, a tire 200, and an axle structure 400, wherein the cutter 300 is connected to a side of the chassis 100 facing the ground, the axle structure 400 is connected to the chassis 100, and the tire 200 is connected to the axle structure 400. Specifically, the chassis 100 includes a ground-facing surface that faces the ground and a ground-facing surface that faces away from the ground when the lawnmower 10 is in operation. The cutter head 300 is installed on the ground and can be moved up and down in a direction perpendicular to the ground, whereby grass can be repaired by setting the height of the cutter head 300. The axle structure 400 is mounted on the ground-back surface of the chassis 100 and extends axially at least beyond the chassis 100 to be connected to the tires 200. A driving motor may be installed in the tire 200, and the driving motor drives the mower 10 to move by driving the tire 200 to rotate. Of course, in other embodiments, a drive motor may be mounted within the axle structure 400, and the drive motor may drive the mower 10 by driving the tire 200 coupled to the axle structure 400 to rotate.

In one embodiment, referring to fig. 1, the mower 10 is a four-wheel structure, two tires 200 near the head are steering wheels, and an axle structure 400 is mounted near the tail. Of course, it is also possible that the axle structure 400 is mounted near the vehicle head, and the two tires 200 near the vehicle tail are steering wheels. The impeller 300 may be located between the front and rear wheels.

In other embodiments, the mower 10 may also be a two or three wheel configuration; in the two-wheel structure, the axle structure 400 may have a function of rotating relative to the chassis 100; in the three-wheel structure, the independent front wheel or the independent rear wheel can be a steering wheel, and is not particularly limited.

Referring to fig. 1 and fig. 2, the axle structure 400 includes an axle body 410 and a surrounding member 420, the axle body 410 includes a mounting portion 411 and connecting portions 412 located at two ends of the mounting portion 411, the mounting portion 411 is connected to the chassis 100 of the lawn mower 10, and the connecting portions 412 protrude from the chassis 100 in an axial direction of the mounting portion 411; a barrier member 420 is attached to the outer periphery of the connecting portion 412 and extends in a radial direction of the connecting portion 412, and the barrier member 420 is used for blocking at least a part of the cutter head 300 of the mower 10.

Specifically, the chassis 100 comprises a middle part 120 and a tail part 110 which are connected, the cutter head 300 is arranged on the middle part 120, and when the mower 10 works, the middle part 120 is parallel to the ground level; the tail part 110 is connected with the middle part 120 at an included angle, and the included angle between the tail part 110 and the ground can be any one of 10-60 degrees. Preferably, the width of the tail portion 110 is smaller than the width of the middle portion 120 in the left-right direction of the body of the lawnmower 10, the mounting portion 411 is attached to the tail portion 110, the connecting portion 412 protrudes from the left-right direction to extend outward from the tail portion 110, and the tire 200 is attached to the connecting portion 412. Further, the outermost side of the tire 200 does not protrude from the outermost side of the middle part 120 in the left-right direction, and it is understood that the widest point of the body of the lawnmower 10 may be the middle part 120 of the chassis 100. By designing the width of the tail portion 110 to be less than the width of the middle portion 120 and attaching the axle structure 400 to the tail portion 110, the width of the lawnmower 10 can be greatly reduced, and the lawnmower 10 is prevented from being too wide and oversized.

The fence 420 is connected to the outer circumference of the connecting part 412 and extends toward the ground. Since the connecting portions 412 are located at both ends of the mounting portion 411, the surrounding blocking members 420 should also be located at both ends of the mounting portion 411, and the tail portion 110 of the chassis 100 is located between the two surrounding blocking members 420. In this application, the height of the fence 420 from the ground should be a predetermined value, which may be determined based on the position of the axle structure 400.

For example, since the tail portion 110 has an angle with the ground, that is, the tail portion 110 is warped away from the ground, in this scenario, the lowest point of the chassis 100 from the ground at which the tail portion 110 is separated from the ground should be the connection point of the tail portion 110 and the middle portion 120. The height of the fence 420 from the ground may be slightly lower than the lowest point of the tail 110, and of course may also be the same as the height of the lowest point of the tail 110, or slightly higher than the lowest point of the tail 110. It will be appreciated that since the tail portion 110 is of a warped configuration, it is easier for an arm or other object to extend down the tail portion 110 under the chassis 100 during operation of the mower 10 and thus be easily cut by the cutterhead 300. By providing the fence 420, the ground clearance of the tail 110 can be increased, thereby preventing an arm from reaching the vicinity of the cutter head 300.

In one embodiment, referring to fig. 1, the lawn mower 10 may have two cutterheads 300, and the two cutterheads 300 are symmetrical with respect to the front-rear direction of the lawn mower 10. The two enclosing pieces 420 can respectively face the corresponding cutterheads 300, so that the ground clearance of the tail part 110 is shortened, and the safety of the mower 10 is improved.

According to the axle structure 400, the enclosing and blocking part 420 is arranged, and the enclosing and blocking part 421A of the enclosing and blocking part 420 is divided into the cutter head 300, so that the situation that arms or other objects of a user stretch into the position near the cutter head 300 from the bottom of the mower 10 can be prevented, the risk of injury of the user is reduced, and the cutter head 300 can be further protected.

In one embodiment, referring to fig. 2, the enclosure 420 includes a first baffle 421, and the first baffle 421 forms an angle with the left-right direction of the lawn mower 10. Specifically, the enclosure member 420 and the connecting portion 412 may be a one-piece molded structure, and the first baffle 421 extends toward the ground. The angle between the first baffle 421 and the lawn mower 10 can be 0-90 deg. The first baffle 421 may include a length direction X, a width direction, and a thickness direction Y; the length direction X may be a length of the first baffle 421 extending from the connecting portion 412 toward the ground, the width direction may be an extending direction of a largest plane on the first baffle 421, and the thickness direction Y is a direction perpendicular to the length direction X and the width direction.

In one embodiment, referring to fig. 5, the angle between the first baffle 421 and the left-right direction of the lawn mower 10 may be 45 °. That is, the width direction of the first baffle 421 may form an angle of 45 ° with the left-right direction of the lawn mower 10. Thus, the first baffle 421 can also form a flow guide plate with a flow guide function. It can be understood that, in order to increase the traveling speed of the mower 10 during mowing, a diversion structure can be arranged on the mower 10, and the first baffle 421 can be used as a diversion structure while surrounding the cutterhead 300 by designing the first baffle to have an included angle of 45 °; therefore, other flow guide structures can be prevented from being repeatedly designed on the axle main body 410, and the cost is greatly saved. Of course, in other embodiments, the angle between the first baffle 421 and the left-right direction of the lawn mower 10 may also be 30 °, or other angles, and is not limited in particular.

In one embodiment, referring to fig. 2 and 3, the first baffle 421 is perpendicular to the left-right direction of the lawn mower 10, and when the lawn mower 10 operates, the first baffle 421 is in a shape of a throat in a direction toward the ground. Specifically, the width direction of the first baffle 421 may form an angle of 90 ° with the left-right direction of the lawn mower 10. In this design, the wind resistance of the first baffle 421 to the traveling direction of the lawn mower 10 can be minimized, thereby reducing the resistance of the lawn mower 10 during operation and reducing the energy consumption of the lawn mower 10. The first baffle 421 has a shape of a throat in a direction toward the ground, and it can be understood that the first baffle 421 has the largest dimension at a connection with the connection portion 412 and the smallest dimension at a position closest to the ground. This design is advantageous for enhancing the strength of the joint between the first baffle 421 and the connecting portion 412. The shape of the necking ensures that the first baffle 421 surrounds the cutter head 300, and the contact area between the first baffle 421 and other sundries can be reduced. Because the end of the first shield 421 is most easily contacted with a stone or other hard objects, the area of the end of the first shield 421 is reduced under this design, so that the possibility of the first shield 421 contacting with hard objects is reduced, thereby being able to avoid partial impact.

In one embodiment, referring to fig. 2 and 3, the baffle 420 further includes a second baffle 422, the second baffle 422 is opposite to the first baffle 421, and a distance is provided between the first baffle 421 and the second baffle 422. Specifically, the second barrier 422 may be parallel to the first barrier 421, and the second barrier 422 and the first barrier 421 may have the same shape. A first baffle 421 may be attached at the most proximal end of the connection portion 412 near the tire 200, and a second baffle 422 may be attached at the most proximal end of the connection portion 412 near the tail portion 110 of the lawnmower 10, i.e., the tail portion 110 of the lawnmower 10 is located between the two second baffles 422. By arranging the rear portion 110 of the lawn mower 10 between the two second baffles 422, the two second baffles 422 can be utilized to clamp the rear portion 110 of the lawn mower 10, thereby preventing the axle structure 400 from moving left and right.

In one embodiment, referring to fig. 6, the axle structure 400 further has mounting holes 413 at two ends, the mounting holes 413 are used for mounting a connecting shaft of the tire 200, the first baffle 421 and the second baffle 422 enclose at least a portion of the mounting holes 413, a fixing member 430 is disposed between the first baffle 421 and the second baffle 422, the fixing member 430 includes at least two fixing screws 431 and a pressure plate 432, the pressure plate 432 is connected to an outer periphery of the connecting portion 412, and the pressure plate 432 is fixed by the fixing screws 431. The fixing screw may also be at least partially inserted into the fitting hole 413 for fixing the connection shaft of the tire 200.

In one embodiment, the thickness of the platen 432 may be smaller than the length of the first baffle 421 and the second baffle 422, so that air can pass between the first baffle 421 and the second baffle 422 to enhance the flow guiding capability. And the surface of the pressure plate 432 facing the ground may be formed in a zigzag shape, thereby further increasing the flow guiding function.

In one embodiment, referring to fig. 6, the first baffle 421 includes a surrounding portion 421A and a reinforcing portion 421B, the surrounding portion 421A is perpendicular to the left-right direction of the lawn mower 10, the reinforcing portion 421B is connected to a surface of the surrounding portion 421A facing away from the tire 200, and the reinforcing portion 421B is further connected to the connecting portion 412. Specifically, the reinforcing portion 421B and the surrounding portion 421A may be of an integral structure, and the reinforcing portion 421B may function as a reinforcing rib. It can be understood that, when the lawnmower 10 is operated, the rail 421A is easily broken after being hit by a stone or a hard object due to the large dimension in the width direction, and the rail 421A can be supported and reinforced by the reinforcing portion 421B, so that the rail 421A is prevented from being broken in the thickness direction Y thereof. Correspondingly, such a rib structure may also be designed on the second barrier 422 for increasing the strength of the second barrier 422.

In one embodiment, referring to fig. 4, the first baffle 421 is parallel to the left-right direction of the lawn mower 10. Specifically, the width direction of the first baffle 421 may form an angle of 0 ° with the left-right direction of the lawn mower 10. In this design, the area of the first shutter 421 that can block the cutter head 300 is maximized. Not only can a person with a large arm or palm be prevented from touching the cutter head 300, but also a person with a small arm or palm, such as a child, can be prevented from touching the cutter head 300.

In an embodiment, referring to fig. 4, the first baffle 421 may further have a plurality of flow guiding holes 4211, and since the width direction of the first baffle 421 may form an angle of 0 ° with the left-right direction of the lawn mower 10, the first baffle 421 in this embodiment may cause a larger wind resistance compared to the first baffle 421 at other angles. Therefore, the first baffle 421 may be provided with a plurality of flow guiding holes 4211 penetrating through the first baffle 421 in the thickness direction Y, so as to reduce the wind resistance caused by the first baffle 421. And the size of the flow guide hole 4211 can be smaller than the size of the fingers of the infant, so that the fingers of the infant are prevented from being clamped in the flow guide hole 4211.

In one embodiment, referring to fig. 1 and 7, the axle main body 410 includes a first fitting portion 414 and a second fitting portion 415, the first fitting portion 414 is connected to the outer periphery of the mounting portion 411 and detachably connected to the chassis 100; the second fitting portion 415 is coupled to an outer circumference of the mounting portion 411 and faces away from the first fitting portion 414, and the second fitting portion 415 is detachably coupled to the chassis 100.

Specifically, when the axle structure 400 is located at the rear of the vehicle, the first mating portion 414 may be located on a side of the mounting portion 411 facing away from the front wheel and extend in a radial direction of the mounting portion 411. The chassis 100 may be provided with a first mounting portion 111 connected to the first fitting portion 414 on a back surface thereof, and the first fitting portion 414 may be connected to the first mounting portion 111 by a bolt fitting. The user may secure the axle structure 400 to the chassis 100 by aligning the first mating portion 414 and the first mounting portion 111 and then bolting them together. And the first fitting portion 414 may be plural; preferably, the first fitting portion 414 is two and symmetrical with respect to a radial direction of the mounting portion 411.

The second fitting portion 415 may be located on a side of the mounting portion 411 toward the front wheel and extend in a radial direction of the mounting portion 411. The chassis 100 may be provided with a second mounting portion 112 connected to the second fitting portion 415 on the back ground surface, and the second fitting portion 415 may be connected to the second mounting portion 112 by bolt fitting. The user may secure the axle structure 400 to the chassis 100 by aligning the second mating portion 415 with the second mounting portion 112 and then bolting them together. And the second fitting portion 415 may be plural; preferably, the second fitting portions 415 are two and symmetrical with respect to the radial direction of the mounting portion 411.

In one embodiment, fig. 7, the second mating portion 415 includes a first curved end 415A and a second curved end 415B, the first curved end 415A and the second curved end 415B being connected at an included angle. Specifically, the first bent end 415A is connected with the mounting part 411, the second bent end 415B is connected with the first bent end 415A, and an angle between the first bent end 415A and the second bent end 415B may be 90 ° to 180 °. The first and second bent ends 415A and 415B may be provided with a point for bolt assembly, thereby increasing the coupling strength between the second fitting portion 415 and the second fitting portion 112.

In one embodiment, referring to fig. 1 and 7, the axle main body 410 further includes a third fitting portion 416, the third fitting portion 416 is connected to the outer periphery of the mounting portion 411, and the third fitting portion 416 and the first fitting portion 414 have a height difference in a radial direction along the mounting portion 411. Specifically, the third fitting portion 416 may be located between the two first fitting portions 414, and the third fitting portion 416 is located above the first fitting portion 414 in the direction perpendicular to the back ground. The chassis 100 may be provided with a third mounting portion 113 on the back surface thereof, which is connected to the third fitting portion 416, and the third fitting portion 416 may be connected to the third mounting portion 113 by bolt fitting. The user may secure the axle structure 400 to the chassis 100 by aligning the third mating portion 416 and the third mounting portion 113 and then bolting them together. In other embodiments, the third fitting portion 416 may also be located between two second fitting portions 415 and have a height difference with the third fitting portion 416.

In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like refer to the orientation or positional relationship illustrated in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. An axle structure of a lawnmower, comprising:

the axle main body comprises a mounting part and connecting parts positioned at two ends of the mounting part, the mounting part is connected with a chassis of the mower, and the connecting parts protrude out of the chassis in the axial direction of the mounting part;

and the enclosing piece is connected to the periphery of the connecting part and extends along the radial direction of the connecting part, and the enclosing piece is used for enclosing at least part of a cutter head of the mower.

2. The axle structure of claim 1, wherein the fence member includes a first fence that is angled with respect to a left-right direction of the mower.

3. The axle structure of claim 2, wherein the first guard is perpendicular to a left-right direction of the lawnmower, and the first guard is tapered in a direction toward the ground when the lawnmower is in operation.

4. The axle structure of claim 2, wherein the fence further comprises a second fence, the second fence being opposite the first fence with a separation distance therebetween.

5. The axle structure of claim 4, wherein the first guard includes a fence portion perpendicular to a left-right direction of the mower and a reinforcement portion attached to a side of the fence portion facing the second guard, the reinforcement portion further being attached to the connecting portion.

6. The axle structure of claim 2, wherein the first guard is parallel to a left-right direction of the mower.

7. The axle structure of claim 1, wherein the axle main body includes a first fitting portion and a second fitting portion, the first fitting portion being attached to an outer periphery of the mounting portion and being detachably attached to the chassis; the second cooperation portion is connected the periphery of installation department, and dorsad first cooperation portion, the second cooperation portion with the chassis can be dismantled and be connected.

8. The axle structure of claim 7, wherein the second mating portion includes a first curved end and a second curved end, the first curved end and the second curved end being joined at an included angle.

9. The axle structure according to claim 7, wherein the axle main body further includes a third fitting portion that is connected to an outer periphery of the mounting portion, the third fitting portion and the first fitting portion having a difference in height in a radial direction along the mounting portion.

10. A lawnmower comprising a chassis, a cutter head attached to a ground-facing side of the chassis, a tire attached to the chassis, and an axle structure according to any one of claims 1 to 9.