Smart mower

Abstract

The utility model discloses an intelligent mower relates to the technical field of mowing equipment, wherein, intelligent mower includes body, first walking wheel, second walking wheel and support structure, and the body has opposite front side and rear side along the body of intelligent mower's direction of movement, and first walking wheel and second walking wheel are arranged along the direction of movement of body, and first walking wheel is configured as driving wheel, and support structure is installed in the bottom of body, and is located between first walking wheel and second walking wheel, and support structure has first position under the state of mowing, and second position under the state of getting rid of trouble, and support structure is separated from ground under first position, and support structure is abutted to ground under second position, and at least provides the upward support force of body, and the technical scheme provided by the utility model can assist intelligent mower to get rid of trouble.

Description

Technical Field

[0001] This utility model relates to the field of lawn mowing equipment technology, and in particular to an intelligent lawn mower. Background Technology

[0002] A smart lawnmower, also known as a lawn mower, lawn trimmer, or lawn trimmer, is a mechanical tool used for trimming lawns, vegetation, etc. When working outdoors, smart lawnmowers encounter various road conditions. When faced with uneven terrain, such as raised or sunken areas, especially if the raised or sunken areas are high and / or steep (with some areas resembling steps), or when encountering tall obstacles, the smart lawnmower may be unable to cross them directly, causing it to become stuck. Utility Model Content

[0003] The main purpose of this invention is to propose an intelligent lawnmower, which aims to assist the intelligent lawnmower in getting out of trouble.

[0004] To achieve the above objectives, the present invention proposes an intelligent lawnmower, comprising:

[0005] The body, along the direction of travel of the intelligent lawnmower, has opposing front and rear sides;

[0006] A first traveling wheel and a second traveling wheel are arranged along the traveling direction of the fuselage, wherein the first traveling wheel is configured as a drive wheel; and

[0007] A support structure is installed at the bottom of the machine body and located between the first traveling wheel and the second traveling wheel;

[0008] The support structure has a first position in the mowing state and a second position in the unstuck state; in the first position, the support structure is detached from the ground, and in the second position, the support structure is in contact with the ground and provides at least an upward supporting force to the fuselage.

[0009] In one embodiment, in the escape state, along the front-rear direction of the fuselage, the support point of the support structure on the fuselage and the support point of the first traveling wheel on the fuselage are respectively located on opposite sides of the center of gravity of the fuselage.

[0010] In one embodiment, in the escaped state, the support structure is capable of providing forward thrust to the fuselage.

[0011] In one embodiment, the support structure is configured as a lifting support rod having a retracted position in the mowing state and an extended position in the freeing state.

[0012] In one embodiment, the support structure includes a lifting support rod and a support wheel rotatably mounted on the end of the lifting support rod away from the machine body, wherein the lifting support rod is slidably mounted on the machine body;

[0013] In the escape state, the lifting support rod drives the support wheel to contact the ground, so as to support the machine body together with the first traveling wheel.

[0014] In one embodiment, the support structure further includes a drive motor capable of driving the support wheel to rotate, thereby providing forward thrust to the fuselage in the freed-from-trouble state.

[0015] In one embodiment, the intelligent lawnmower further includes a blade assembly that is vertically and retractably disposed at the bottom of the body;

[0016] Along the rotation axis of the cutter head assembly, the cutter head assembly is configured with a mounting cavity, and at least a portion of the support structure is disposed in the mounting cavity.

[0017] In one embodiment, the cutter head assembly can drive the support structure to rise and fall.

[0018] In one embodiment, the support structure is capable of retracting or expanding relative to the cutter head assembly.

[0019] In one embodiment, the support structure is configured as a support swing rod, the support swing rod including a first end rotatably connected to the body and a second end disposed opposite to the first end;

[0020] In the escape state, the second end swings out relative to the fuselage and abuts against the ground to support the fuselage.

[0021] The technical solution of this utility model involves setting up a body with opposing front and rear sides along the direction of travel of the intelligent lawnmower. A first traveling wheel and a second traveling wheel are arranged along the direction of travel, with the first traveling wheel configured as the drive wheel. When the intelligent lawnmower is stuck, if the first traveling wheel directly drives the body, the second traveling wheel may not provide sufficient traction due to terrain limitations, thus restricting the force exerted by the first traveling wheel and making it difficult for the intelligent lawnmower to escape. Therefore, a support structure is provided at the bottom of the body. In the unstuck state, the support structure moves to a second position abutting the ground to support the body, thereby providing an additional support point for the intelligent lawnmower, increasing the body's ground contact, and facilitating the first traveling wheel's force application. This allows the first traveling wheel to drive the body, thereby assisting the second traveling wheel in overcoming depressions in the ground or obstacles, achieving the purpose of escaping or overcoming obstacles. Furthermore, the support structure is located between the first and second traveling wheels. This means that when the support structure supports the machine body, it primarily provides support for the side where the second traveling wheel is located, thus preventing the support structure from supporting the side where the first traveling wheel is located and reducing the possibility of the support structure accidentally reducing the grip of the first traveling wheel. During mowing, to reduce the possibility of friction between the support structure and the ground affecting the normal operation of the intelligent lawnmower, the support structure moves to a first position that is off the ground. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 A schematic diagram of the structure of an intelligent lawnmower in one embodiment of the present invention;

[0024] Figure 2 for Figure 1 A schematic diagram of the intelligent lawnmower in an unstuck state;

[0025] Figure 3 A schematic diagram of the intelligent lawnmower in an unstuck state according to another embodiment of the present invention;

[0026] Figure 4 for Figure 3 A schematic diagram of a smart lawnmower in mowing mode;

[0027] Figure 5 A schematic diagram of the intelligent lawnmower in an unstuck state in another embodiment of the present invention;

[0028] Figure 6 for Figure 3 A schematic diagram of the intelligent lawnmower in the mowing state.

[0029] Explanation of icon numbers:

[0030] 100. Intelligent lawnmower; 1. Body; 101. First traveling wheel; 102. Second traveling wheel; 11. Support structure; 111. Lifting support rod; 112. Support wheel; 12. Blade assembly; 121. Blade; 122. Blade; 123. Mounting cavity; 2. Ground; 21. Recessed area.

[0031] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0033] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0034] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0035] In existing technologies, intelligent lawnmowers 100 are generally equipped with obstacle avoidance devices to assist them in bypassing obstacles. However, in some working scenarios, the intelligent lawnmower 100 may be unable to bypass obstacles, or it may encounter obstacles unexpectedly. For example, when the ground 2 has a large recessed area 21 or raised area (much larger than the size of the intelligent lawnmower 100 itself), and this recessed area 21 or raised area needs to be mowed, the drive wheel is usually in front to allow the intelligent lawnmower 100 to rush out of the recessed area 21 or climb to the raised area. However, if the recessed area 21 or raised area is high and / or steep, the rear wheels may not be able to pass smoothly, causing the intelligent lawnmower 100 to get stuck. Or, if it accidentally encounters a high obstacle, the rear wheels may also be unable to pass, often requiring manual extrication, which is time-consuming and laborious.

[0036] In view of this, the present invention proposes an intelligent lawnmower 100, which can assist the intelligent lawnmower 100 in getting out of trouble.

[0037] Please see Figures 1 to 6 In one embodiment of this utility model, the intelligent lawnmower 100 includes a body 1, which has a front side and a rear side along the direction of travel of the intelligent lawnmower 100. A first traveling wheel 101 and a second traveling wheel 102 are arranged along the direction of travel of the body 1, with the first traveling wheel 101 configured as the driving wheel. That is, the first traveling wheel 101 and the second traveling wheel 102 are arranged along the direction of travel of the body 1, and the first traveling wheel 101 is configured as the driving wheel, meaning the intelligent lawnmower 100 is configured as a dual-wheel drive (the first traveling wheel 101 is the driving wheel, and the second traveling wheel 102 is the driven wheel), thereby driving the intelligent lawnmower 100 to travel. In other embodiments, the intelligent lawnmower 100 can also be configured as a four-wheel drive (both the first traveling wheel 101 and the second traveling wheel 102 are driving wheels).

[0038] It is worth noting that the first traveling wheel 101 and the second traveling wheel 102 are arranged along the direction of travel of the machine body 1. Either the first traveling wheel 101 or the second traveling wheel 102 can be located on the front side of the machine body. Furthermore, when the intelligent lawnmower 100 is dual-wheel drive, if it is rear-wheel drive (i.e., the first traveling wheel 101 is located on the rear side of the machine body 1 and the second traveling wheel 102 is located on the front side), the intelligent lawnmower 100 typically reverses to overcome obstacles or get out of trouble. If the intelligent lawnmower 100 is front-wheel drive (i.e., the first traveling wheel 101 is located on the front side of the machine body 1 and the second traveling wheel 102 is located on the rear side), the intelligent lawnmower 100 can directly travel forward to get out of trouble. However, in actual extrication, regardless of whether the intelligent lawnmower 100 is rear-wheel drive or front-wheel drive, the first walking wheel 101 always crosses the higher ground 2 or obstacle first. Furthermore, when the intelligent lawnmower 100 is dual-wheel drive, the second walking wheel 102 is often configured as a swivel wheel.

[0039] As some embodiments of this application, when the intelligent lawnmower 100 is stuck, the first wheel 101 is located in front of the second wheel 102, that is, the first wheel 101 is the first to cross the higher ground 2 or obstacle. However, the second wheel 102 may get stuck in the recessed ground 2 or the second wheel 102 may be unable to cross the obstacle. At this time, if the first wheel 101 directly drives the body 1 to move, the second wheel 102 may not be able to provide sufficient grip due to terrain limitations, thus restricting the force exerted by the first wheel 101 and making it difficult for the intelligent lawnmower 100 to get out of trouble. Therefore, in order to assist the intelligent lawnmower 100 in getting out of trouble, a support structure 11 is provided at the bottom of the body 1. In the state of being out of trouble, the support structure 11 moves to a second position that abuts against the ground 2 to support the body 1, so that the first wheel 101 can drive the body 1 to move, thereby assisting the second wheel 102 to cross the recessed ground 2 or obstacle.

[0040] Generally, the intelligent lawnmower 100 has an escape state and a mowing state. The support structure 11 has a support state corresponding to the escape state and a storage state other than the support state. In the escape state, the support structure 11 moves to the second position, so that the lower end of the support structure 11 abuts against the ground 2 to support the body 1, thereby providing an additional support point for the intelligent lawnmower 100, improving the ground contact force of the body 1, and thus facilitating the first walking wheel 101 to exert force, so that the first walking wheel 101 can drive the body 1 to move, thereby assisting the second walking wheel 102 to cross the recessed ground 2 or overcome obstacles, achieving the purpose of escape or obstacle crossing.

[0041] In mowing mode, to reduce the possibility of friction between the support structure 11 and the ground 2 affecting the normal operation of the intelligent lawnmower 100, the support structure 11 moves to a first position detached from the ground 2, i.e., switches to a retracted state. At this time, the support structure 11 is at least partially retracted into the body 1. The support structure 11 can rise as a whole, thus retracting at least the support structure 11 into the body 1, or it can retract itself, causing the lower end of the support structure 11 to rise to a certain distance from the ground 2; or it can first retract itself and then rise as a whole into the body 1. When the support structure 11 is partially retracted into the body 1, optionally, in the retracted state, the distance from the support structure 11 to the ground 2 is less than the distance from the blade disc 121 to the ground 2, i.e., the height of the support structure 11 is higher than the height of the blade disc 121, thereby further reducing the possibility of the support structure 11 affecting the movement of the intelligent lawnmower 100.

[0042] It is conceivable that the support structure 11 is typically driven by a drive motor or similar device, thereby facilitating the automatic extrication of the intelligent lawnmower 100 from difficult situations without human assistance. This drive structure can utilize some of the intelligent lawnmower 100's own drive mechanisms, or it can be driven by a dedicated, additional drive structure.

[0043] The support structure 11 is located between the first traveling wheel 101 and the second traveling wheel 102, that is, the support structure 11 is located on the side of the first traveling wheel 101 facing the second traveling wheel 102, and is often spaced apart from the first traveling wheel 101. This allows the support structure 11 to primarily provide support for the body on the side where the second traveling wheel 102 is located when supporting the fuselage 1, thus avoiding the support structure 11 supporting the side where the first traveling wheel 101 is located, thereby reducing the possibility of the support structure 11 accidentally reducing the grip of the first traveling wheel 101. Furthermore, there is generally a certain distance between the support structure 11 and the second traveling wheel 102, ensuring that the support structure 11 can be stably supported at a higher ground level 2 (the ground level 2 where the first traveling wheel 101 is located) when supported, thereby reducing the possibility of support structure 11 failure.

[0044] Optionally, along the front-rear direction of the fuselage 1, the support point of the support structure 11 to the fuselage 1 and the support point of the first traveling wheel 101 to the fuselage 1 are respectively located on opposite sides of the center of gravity of the fuselage 1. That is, the support point of the support structure 11 to the fuselage and the second traveling wheel 102 are both located on the same side of the center of gravity of the fuselage 1, so that the support structure 11 provides support for the fuselage 1 on the side where the second traveling wheel 102 is located, thereby avoiding the support structure 11 being supported on the side where the first traveling wheel 101 is located.

[0045] It should be noted that because the weight of the body 1 of the intelligent lawnmower 100 is often unevenly distributed, the center of gravity of the body 1 is not the same as the center of the body 1. Generally, the first traveling wheel 101 of the intelligent lawnmower 100 is the drive wheel, so the weight of the intelligent lawnmower 100 is often concentrated on the side where the first traveling wheel 101 is located. Therefore, the support point of the support structure 11 can be located on the side of the body 1 near the second traveling wheel 102, or at the center of the body 1, or even on the side of the body 1 near the first traveling wheel 101. Furthermore, the support point of the support structure 11 is not necessarily the same as its installation position. When the support structure 11 is a vertical structure, the support point is the same as its installation position; when the support structure 11 is tilted, the support point is not the same as its installation position.

[0046] See again Figures 1 to 6 In this embodiment of the invention, when the machine is in a free-trapped state, the support structure 11 can also provide a forward thrust to the body 1. For example, if the support structure is tilted and the distance between the support structure 11 and the first traveling wheel 101 decreases in the upward direction, that is, the lower end of the support structure 11 is offset towards the second traveling wheel 102, meaning the support structure 11 is tilted backward as a whole. This allows the support structure 11 to exert a downward pressure on the ground 2 (tilted towards the direction of the second traveling wheel 102) in the supported state. This pressure has a component opposite to the direction of travel of the intelligent lawnmower 100. Correspondingly, the ground 2 exerts an upward thrust on the support rod, and this thrust has a component in the same direction as the direction of travel of the intelligent lawnmower 100. This allows the ground 2 to push the body 1 forward via the support rod, further assisting the intelligent lawnmower 100 in getting out of trouble. Of course, in other embodiments, the support structure 11 can also be vertically arranged.

[0047] Please see Figure 1 In this embodiment of the invention, the support structure 11 is configured as a lifting support rod 111, which has a retracted position in the mowing state and an extended position in the escape state. Specifically, the lifting support rod 111 is movably installed on the machine body 1 and can be raised and lowered relative to the machine body 1. In the mowing state, the lifting support rod 111 retracts, thereby lifting the lifting support rod 111 off the ground to ensure the normal operation of the intelligent lawnmower 100. At this time, the lifting support rod 111 is at least partially retracted into the machine body 1; in the escape state, the lifting support rod 111 extends, thereby lowering the lifting support rod 111 until its lower end abuts against the ground 2 to support the machine body 1, thereby assisting the intelligent lawnmower 100 in escaping obstacles. This rod structure is simple in structure, occupies little space, helps to save internal space of the machine body 1, and is convenient for maintenance and replacement.

[0048] In this design, the lifting support rod 111 switches between the first and second positions by retracting or expanding, thereby reducing the internal space of the machine body 1. Alternatively, in other embodiments, the lifting support rod 111 can also be raised or lowered by rotation, driven by a drive motor; the lifting support rod 111 can also be slidably mounted on the machine body 1, allowing the lifting structure to directly raise or lower by sliding up and down.

[0049] When the support structure 11 is configured as a lifting support rod 111, and when the lifting support rod 111 assists the body 1 in escaping trouble, the body 1 often drives the lifting support rod 111 forward a certain distance to ensure the body is completely freed. At this time, the lifting support rod 111 and the ground 2 experience sliding friction, resulting in a large frictional force. To reduce friction, in another embodiment of this utility model, see [reference needed]. Figure 3 and Figure 4 The support structure 11 includes a lifting support rod 111 and a support wheel 112 rotatably mounted on the end of the lifting support rod 111 away from the machine body 1. The lifting support rod 111 is slidably mounted on the machine body 1. In the state of being out of trouble, the lifting support rod 111 drives the support wheel 112 to descend, so as to jointly support the machine body 1. That is, a support wheel 112 is added to the lower end of the lifting support rod 111. So when the machine body 1 drives the lifting support rod 111 to move, the lifting support rod 111 and the ground 2 become rolling friction, thereby further reducing friction and facilitating the intelligent lawnmower 100 to get out of trouble.

[0050] In order to facilitate the storage of the support structure 11 and reduce the space occupied by the support structure 11, the size of the support wheel 112 is often small, at least smaller than the size of the first traveling wheel 101 and the second traveling wheel 102.

[0051] Furthermore, the support structure 11 also includes a drive motor, which can drive the support wheel 112 to rotate. That is, the support wheel 112 is also configured as a drive wheel, thereby providing forward thrust to the body 1. Thus, the support structure 11 can not only support the body 1 to increase the ground contact force of the body 1, but also drive the body movement together with the first walking wheel 101, thereby further facilitating the intelligent lawnmower 100 to get out of trouble.

[0052] In one embodiment, the support structure 11 is configured as a support swing arm, which includes a first end rotatably connected to the body 1 and a second end opposite to the first end. In the unstuck state, the second end swings out relative to the body 1 and abuts against the ground to support the body 1. Specifically, the first section of the support swing arm is rotatably mounted to the body 1. In the mowing state, the lifting support rod 111 is at least partially retracted into the body 1. In the unstuck state, the lifting support rod 111 swings downward, and the second end swings out relative to the body 1 and abuts against the ground to support the body 1, thereby assisting the intelligent lawnmower 100 in unstuck situations. That is, the support structure 11 is raised and lowered through swinging motion. Of course, in other embodiments, the second end of the support swing arm can also be connected to a support wheel 112.

[0053] To reduce the space occupied by the support structure 11, in the embodiments of this utility model, see [reference needed]. Figure 5 and Figure 6 The intelligent lawnmower 100 also includes a liftable blade assembly 12 located at the bottom of the body 1;

[0054] Along the rotation axis of the cutter head assembly 12, the cutter head assembly 12 is provided with a mounting cavity 123, and at least part of the support structure 11 is disposed in the mounting cavity 123.

[0055] Specifically, the support structure 11 is integrated into the cutter head assembly 12, eliminating the need for additional space at the bottom of the machine body 1 for the installation and movement of the support structure 11, thus saving space occupied by the support structure 11. To facilitate the operation of the cutter head assembly 12, increase the mowing area, and adapt to different working environments, the cutter head assembly 12 can typically move up and down. Therefore, optionally, the cutter head assembly 12 can drive the support structure 11 to move up and down, meaning the support structure 11 can move up and down with the cutter head assembly 12. In other words, the cutter head assembly 12 can move up and down from its fixed position on the machine body 1, so that the downward movement of part of the support structure 11 is completed by the cutter head assembly 12, thereby helping to reduce the length of the support structure 11 and thus saving space on the machine body 1.

[0056] Specifically, the cutter head assembly 12 includes a cutter head 121 with blades 122 on its edge. The cutter head 121 is rotatably mounted on the machine body 1. A motor can drive the cutter head 121 to rotate, thereby driving the blades 122 to rotate, thus cutting and clearing weeds. The cutter head 121 has a mounting cavity 123 that extends through it, and the axis of the mounting cavity 123 often overlaps with the rotation axis of the cutter head assembly 12. A lifting support rod 111 is installed in the mounting cavity 123. This allows for the installation of the lifting support rod 111 while minimizing the impact of the cutter head assembly 12's operation on the lifting support rod 111, and also facilitates the installation of the lifting support rod 111.

[0057] Furthermore, the support structure 11 can retract or expand relative to the cutter head assembly 12, that is, the support structure 11 can both rise and fall with the cutter head assembly 12 and rise and fall relative to the cutter head assembly 12, thereby improving the flexibility of the support structure 11 in use.

[0058] The above are merely exemplary embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the technical concept of this utility model and the contents of the specification and drawings of this utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A smart lawnmower, characterized in that, The intelligent mower comprises: a body, the body having opposite front and rear sides in a traveling direction of the intelligent mower; a first traveling wheel and a second traveling wheel arranged in the traveling direction of the body, the first traveling wheel being configured as a driving wheel; and a support structure mounted to a bottom of the body and located between the first traveling wheel and the second traveling wheel; wherein the support structure has a first position in a mowing state and a second position in a stuck state, the support structure being separated from the ground in the first position, and the support structure abutting against the ground in the second position and providing an upward supporting force for the body. In the stuck state, support points of the support structure and the first traveling wheel to the body are located on opposite sides of a center of gravity of the body in a front-rear direction of the body.

2. The intelligent lawnmower as claimed in claim 1, wherein, In the stuck state, the support structure can provide a forward thrust to the body.

3. The intelligent lawnmower as claimed in claim 1, wherein, The support structure is configured as a lifting support rod, the lifting support rod having a retracted position in the mowing state and an extended position in the stuck state.

4. The intelligent lawnmower as claimed in claim 1, wherein, The support structure comprises the lifting support rod and a support wheel rotatably mounted to an end of the lifting support rod away from the body, the lifting support rod being slidingly mounted to the body.

5. The intelligent lawnmower as claimed in claim 1, wherein, In the stuck state, the lifting support rod drives the support wheel to contact the ground to jointly support the body with the first traveling wheel. The support structure further comprises a driving motor, the driving motor being capable of driving the support wheel to rotate to provide the forward thrust to the body in the stuck state.

6. The intelligent lawnmower as claimed in claim 5, wherein, The intelligent mower further comprises a cutter assembly liftable arranged at the bottom of the body.

7. The intelligent lawnmower as claimed in any one of claims 4 to 6, characterized in that, The cutter assembly is configured with a mounting cavity along an axis of rotation of the cutter assembly, at least part of the support structure being arranged in the mounting cavity. The cutter assembly is capable of lifting the support structure.

8. The intelligent lawnmower as claimed in claim 7, wherein, The support structure is capable of being retracted or extended relative to the cutter assembly.

9. The intelligent lawnmower as claimed in claim 8, wherein, The support structure is configured as a support swing rod, the support swing rod comprising a first end rotatably connected to the body and a second end arranged opposite to the first end.

10. The intelligent lawnmower as claimed in claim 1, wherein, In the stuck state, the second end swings out relative to the body and abuts against the ground to support the body. ​

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